阅读说明：本技术 一种干混自流平砂浆 (Dry-mixed self-leveling mortar ) 是由 谢咏宸 李炬轩 徐观明 黄晓东 廖房朋 钟林峰 于 2021-07-28 设计创作，主要内容包括：本发明提供了一种干混自流平砂浆及其制备方法。其中,机制砂中的玻璃砂选用废弃的玻璃制品制成细砂,减少资源浪费,同时对玻璃砂表面进行改性保护,使其在砂浆具有良好的和易性。表面改性剂中的锂基膨润土和海泡石粉有一定的膨胀性,可减少砂浆的收缩率。改性缓凝剂延缓凝结时间,同时减少凝固过程中的收缩现象。在砂浆中还起到与基面粘结的作用,具有优异的粘结性能。添加改性流平剂,有效避免砂浆中的有效成分发生絮凝结块现象,使砂浆能够自流平,同时封闭表面的微小孔泡,使砂浆表面在遇到油污时不会轻易的受到污染,增加砂浆表面的抗污能力。(The invention provides dry-mixed self-leveling mortar and a preparation method thereof. The glass sand in the machine-made sand is made of waste glass products to form fine sand, so that resource waste is reduced, and meanwhile, the surface of the glass sand is modified and protected, so that the glass sand has good workability in mortar. The lithium bentonite and sepiolite powder in the surface modifier have certain expansibility, and the shrinkage rate of the mortar can be reduced. The modified retarder delays the setting time and reduces the shrinkage phenomenon in the setting process. The mortar also has the function of bonding with a base surface and has excellent bonding performance. The modified flatting agent is added, so that the flocculation and caking phenomena of the effective components in the mortar are effectively avoided, the mortar can automatically level, and meanwhile, the micro-pores on the surface are sealed, so that the surface of the mortar cannot be easily polluted when encountering oil stains, and the anti-fouling capability of the surface of the mortar is improved.)

1. A dry-mixed self-leveling mortar is characterized in that: the raw materials comprise P.O42.5 cement: 300-320 parts of high-alumina cement: 150-170 parts of 80-120-mesh machine-made sand: 400-450 parts of coarse whiting: 150 and 160 parts of ash calcium: 15-20 parts of cellulose ether 10 ten thousand: 1-3 parts of rubber powder 4109: 12-15 parts of a defoaming agent 361: 1-3 parts of water repellent 780: 2-4 parts of polycarboxylate water reducing agent 315: 1-3 parts of calcium formate: 5-8 parts of lithium carbonate, 1-2 parts of lithium carbonate, 1-3 parts of tartaric acid, 1-3 parts of modified retarder and 2-3 parts of modified leveling agent.

2. The dry-mixed self-leveling mortar of claim 1, wherein: the machine-made sand is 80-120 meshes of basalt sand: 80-120 mesh quartz sand: the mass ratio of the 80-120 mesh modified glass sand is 4: 5: 3, mixed sand.

3. The dry-mixed self-leveling mortar of claim 2, wherein: the preparation method of the modified glass sand comprises the following steps:

1) cleaning: cleaning the waste glass product, removing soil impurities and metal residues on the surface, soaking the waste glass product in a hydrochloric acid solution with the pH value of 4.5-5.0 for 10 hours, and cleaning for later use;

2) crushing: putting the waste glass product cleaned in the step 1) into a glass grinder for grinding until the ground glass sand can pass through a 120-mesh sieve, putting the ground glass sand into a cleaning pool, and cleaning glass powder and glass scraps in glass;

3) pretreatment: pretreating the glass sand cleaned in the step 2), putting the glass sand into a viscous solution, heating to 75 ℃ at the speed of 3-5 ℃/min, and keeping the temperature and heating for 4 hours;

4) modification: adding 8-13 parts of surface modifier into 25-30 parts of the glass sand pretreated in the step 3), adding 60% ethanol solution, heating to 85 ℃ at the speed of 4-6 ℃/min, keeping the temperature for 5 hours, taking out, putting into a vacuum oven, and drying at 450 ℃ for 4-6 hours to obtain the glass sand.

4. The dry-mixed self-leveling mortar of claim 3, wherein: the viscous solution is a mixed solution of 8-12% of carboxymethyl fiber solution and 10-15% of calcium lignosulfonate according to the volume ratio of 3: 2.

5. The dry-mixed self-leveling mortar of claim 3, wherein: the preparation process of the surface modifier comprises the following steps:

a. putting 15-20 parts of lithium bentonite into a reactor, adding 5-8 parts of 1-benzyl-2, 3-epoxy n-propyl-tert-butyl carbamate, adding 60% ethanol solution, heating to 90-95 ℃ at the rate of 3-5 ℃, and carrying out heat preservation reaction for 5 hours to obtain an intermediate product i;

b. adding 3-5 parts of ethylene-vinyl acetate resin and 5-10 parts of 2-benzyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan into the intermediate product i, putting the intermediate product i into a high-pressure reaction kettle, adding a methanol solution, filling nitrogen into the high-pressure reaction kettle, keeping the temperature at 150 ℃ under the pressure of 0.5Mpa, and reacting for 3-4 hours to obtain an intermediate product ii;

c. adding 3-5 parts of tert-butyldiphenylchlorosilane into the intermediate product ii, adding a DMF solution, heating to 75 ℃, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product iii;

d. and (3) adding 10-15 parts of intermediate product iii into a petroleum ether solution, completely dissolving the intermediate product iii, adding 10-15 parts of sepiolite powder, uniformly stirring, and evaporating petroleum ether liquid by rotary evaporation to obtain the sepiolite-based composite material.

6. The dry-mixed self-leveling mortar of claim 1, wherein: the preparation process of the modified retarder comprises the following steps:

i) putting 5-7 parts of sodium mononitrate into 8-12 parts of polyurethane, adding an ether solution, putting the mixture into a reactor, heating to 90 ℃ at the speed of 5-7 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain a product a;

ii) adding 3-5 parts of dibutyl tin dilaurate into the product a, adding a toluene solution, heating to 75 ℃ at the speed of 3-5 ℃/min, stirring while heating, performing heat preservation reaction for 3 hours, adding 3-5 parts of geniposide into the reactor, rapidly heating to 100 ℃, and performing heat preservation reaction for 6 hours to obtain a product b;

iii) adding 5-8 parts of basalt fiber into the product b, adding 4-7 parts of heptamethyldisilazane, adding a dichloromethane solution, heating to 110 ℃ at the speed of 2-4 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a product c;

iv) adding 10-15 parts of calcium bentonite into the product c, placing the product c into a vacuum homogenizing emulsifying kettle for homogenizing treatment, adding 15-20 parts of carbon nano tubes into the treated mixture, adding an acetone solution, uniformly stirring, heating to 50 ℃ at the speed of 3-5 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the calcium bentonite.

7. The dry-mixed self-leveling mortar of claim 1, wherein: the preparation process of the modified flatting agent comprises the following steps:

1) adding concentrated sulfuric acid into 15-20 parts of acrylic acid, 25-30 parts of ethanol and 5-10 parts of methanol, slowly heating to 95 ℃ at the speed of 3-5 ℃/min, and carrying out heat preservation reaction for 7 hours to obtain a reactant i;

2) adding 10-13 parts of tetraethyl ethylene diphosphate and ethyl acetate solution into the reactant i, heating to 125-130 ℃ at the speed of 1-3 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a reactant ii;

3) adding 3-5 parts of (3,3, 3-trifluoropropyl) dichloromethylsilane to a reactant ii, adding a toluene solution, and placing into a high-pressure reaction kettle, wherein the pressure is 1.0Mpa, the temperature is 115 ℃, and the reaction is carried out for 5 hours under the condition of heat preservation to obtain a reactant iii;

4) adding 7-10 parts of sodium fluosilicate and 3-5 parts of 4-methyl benzene sulfinic acid methyl ester into a DMSO solution, heating to 80 ℃, stirring while heating, and carrying out heat preservation reaction for 5 hours to obtain a reactant iv;

5) 5-8 parts of reactant iii and 4-6 parts of reactant iv are placed into a reactor, 10-12 parts of glass powder are added, an ethanol solution is added, the temperature is rapidly raised to 60 ℃, and the reaction is carried out for 4 hours under the condition of heat preservation, so as to obtain reactant v;

6) and putting the reactant v into a reactor, adding an ethyl acetate solution, adding silicon dioxide particles, uniformly stirring, and evaporating the solution by rotary evaporation to obtain the catalyst.

Technical Field

The invention belongs to the field of building materials, and particularly relates to dry-mixed self-leveling mortar.

Background

The waste glass is one of the most difficult-to-treat components in the urban garbage, and if the waste glass is not recycled, the waste glass is not beneficial to garbage reduction. The cost of collection, transportation and incineration is high, the material cannot be degraded in landfill, even part of the material also contains heavy metals such as zinc, copper and the like, and the material can pollute soil and underground water after being discarded at will. The waste glass is recycled with a slight profit, compared with other recyclables such as "chicken ribs". The waste material recycling industry in China develops rapidly, and a renewable resource recycling and processing system is basically formed. However, a small part of waste glass generated in life is recycled to a waste collection station through various modes, most of the rest is buried by the environmental sanitation department, and the waste glass is not really industrialized so far. And most of the existing waste glass products are recycled by melting, so that a large amount of energy is wasted.

However, considering that the glass has chemical properties of acid resistance, alkali resistance and stability, the glass can be crushed to be made into mortar for application in the mortar, and the application of the glass in the mortar is a good idea. The self-leveling mortar is a building ground leveling material which is prepared by mixing inorganic or organic cementing material as a base material, additives such as superplasticizer and the like, fine sand and the like. When in use, only water is added according to a specified water-cement ratio range and is uniformly mixed, after mechanical pumping or manual construction, manual leveling is not needed, and the slurry flows under the action of the gravity of the slurry to form a flat surface. However, the self-leveling mortar has strict requirements on the formula and construction of the mortar, otherwise, hollowing, cracking and sanding of the ground can be caused, so that the self-leveling mortar loses the required flatness of the surface and cannot be self-leveled. The self-leveling mortar on the market at present has high requirements on the bottom surface of a constructed base layer, the ground needs to be subjected to surface treatment before the self-leveling mortar is added, otherwise, the bonding property between the mortar and the base surface is weakened, the operation is complex, the surface of the mortar is very easily polluted by grease and the like, the surface of the mortar needs to be treated again after construction, the process is complex, and the added glass sand cannot be matched with the components of the mortar and is easy to separate out. Therefore, aiming at the problems, the invention provides the dry-mixed self-leveling mortar, the preparation method thereof and the preparation process of the modified glass sand prepared from the waste glass products, so that the prepared mortar can be effectively bonded without surface modification of a base surface, and meanwhile, the effective components in the mortar can increase the surface anti-fouling capability of the mortar.

Disclosure of Invention

The invention aims to provide dry-mixed self-leveling mortar and a preparation method thereof.

The second purpose of the invention is to provide a preparation method for preparing modified glass sand from waste glass products in dry-mixed self-leveling mortar.

The third purpose of the invention is to provide a preparation method of the modified retarder in the dry-mixed self-leveling mortar.

The fourth purpose of the invention is to provide a preparation method of the modified leveling agent in the dry-mixed self-leveling mortar.

The invention is realized by the following scheme:

the preparation method comprises the following steps:

a dry-mixed self-leveling mortar comprises the following raw materials of P.O42.5 cement: 300-320 parts of high-alumina cement: 150-170 parts of 80-120-mesh machine-made sand: 400-450 parts of coarse whiting: 150 and 160 parts of ash calcium: 15-20 parts of cellulose ether 10 ten thousand: 1-3 parts of rubber powder 4109: 12-15 parts of a defoaming agent 361: 1-3 parts of water repellent 780: 2-4 parts of polycarboxylate reducer 315: 1-3 parts of calcium formate: 5-8 parts of lithium carbonate, 1-2 parts of lithium carbonate, 1-3 parts of tartaric acid, 1-3 parts of modified retarder and 2-3 parts of modified leveling agent.

Wherein the machine-made sand is 80-120 mesh basalt sand: 80-120 mesh quartz sand: the mass ratio of the 80-120 mesh modified glass sand is 4: 5: 3, mixed sand.

The preparation method of the modified glass sand comprises the following steps:

1) cleaning: cleaning the waste glass product, removing soil impurities and metal residues on the surface, soaking the waste glass product in a hydrochloric acid solution with the pH value of 4.5-5.0 for 10 hours, and cleaning for later use;

2) crushing: putting the waste glass product cleaned in the step 1) into a glass grinder for grinding until the ground glass sand can pass through a 120-mesh sieve, putting the ground glass sand into a cleaning pool, and cleaning glass powder and glass scraps in glass;

3) pretreatment: pretreating the glass sand cleaned in the step 2), putting the glass sand into a viscous solution, heating to 75 ℃ at the speed of 3-5 ℃/min, and keeping the temperature and heating for 4 hours;

4) modification: adding 8-13 parts of surface modifier into 25-30 parts of the glass sand pretreated in the step 3), adding 60% ethanol solution, heating to 85 ℃ at the speed of 4-6 ℃/min, keeping the temperature for 5 hours, taking out, putting into a vacuum oven, and drying at 450 ℃ for 4-6 hours to obtain the glass sand.

Wherein the viscous solution is a mixed solution of 8-12% of carboxymethyl fiber solution and 10-15% of calcium lignosulfonate in a volume ratio of 3: 2.

The preparation process of the surface modifier comprises the following steps:

a. putting 15-20 parts of lithium bentonite into a reactor, adding 5-8 parts of 1-benzyl-2, 3-epoxy n-propyl-tert-butyl carbamate, adding 60% ethanol solution, heating to 90-95 ℃ at the rate of 3-5 ℃, and carrying out heat preservation reaction for 5 hours to obtain an intermediate product i;

b. adding 3-5 parts of ethylene-vinyl acetate resin and 5-10 parts of 2-benzyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan into the intermediate product i, putting the intermediate product i into a high-pressure reaction kettle, adding a methanol solution, filling nitrogen into the high-pressure reaction kettle, keeping the temperature at 150 ℃ under the pressure of 0.5Mpa, and reacting for 3-4 hours to obtain an intermediate product ii;

c. adding 3-5 parts of tert-butyldiphenylchlorosilane into the intermediate product ii, adding a DMF solution, heating to 75 ℃, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product iii;

d. and (3) adding 10-15 parts of intermediate product iii into a petroleum ether solution, completely dissolving the intermediate product iii, adding 10-15 parts of sepiolite powder, uniformly stirring, and evaporating petroleum ether liquid by rotary evaporation to obtain the sepiolite-based composite material.

The preparation process of the modified retarder comprises the following steps:

i) putting 5-7 parts of sodium mononitrate into 8-12 parts of polyurethane, adding an ether solution, putting the mixture into a reactor, heating to 90 ℃ at the speed of 5-7 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain a product a;

ii) adding 3-5 parts of dibutyl tin dilaurate into the product a, adding a toluene solution, heating to 75 ℃ at the speed of 3-5 ℃/min, stirring while heating, performing heat preservation reaction for 3 hours, adding 3-5 parts of geniposide into the reactor, rapidly heating to 100 ℃, and performing heat preservation reaction for 6 hours to obtain a product b;

iii) adding 5-8 parts of basalt fiber into the product b, adding 4-7 parts of heptamethyldisilazane, adding a dichloromethane solution, heating to 110 ℃ at the speed of 2-4 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a product c;

iv) adding 10-15 parts of calcium bentonite into the product c, placing the product c into a vacuum homogenizing emulsifying kettle for homogenizing treatment, adding 15-20 parts of carbon nano tubes into the treated mixture, adding an acetone solution, uniformly stirring, heating to 50 ℃ at the speed of 3-5 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the calcium bentonite.

The preparation process of the modified leveling agent comprises the following steps:

1) adding concentrated sulfuric acid into 15-20 parts of acrylic acid, 25-30 parts of ethanol and 5-10 parts of methanol, slowly heating to 95 ℃ at the speed of 3-5 ℃/min, and carrying out heat preservation reaction for 7 hours to obtain a reactant i;

2) adding 10-13 parts of tetraethyl ethylene diphosphate and ethyl acetate solution into the reactant i, heating to 125-130 ℃ at the speed of 1-3 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a reactant ii;

3) adding 3-5 parts of (3,3, 3-trifluoropropyl) dichloromethylsilane to a reactant ii, adding a toluene solution, and placing into a high-pressure reaction kettle, wherein the pressure is 1.0Mpa, the temperature is 115 ℃, and the reaction is carried out for 5 hours under the condition of heat preservation to obtain a reactant iii;

4) adding 7-10 parts of sodium fluosilicate and 3-5 parts of 4-methyl benzene sulfinic acid methyl ester into a DMSO solution, heating to 80 ℃, stirring while heating, and carrying out heat preservation reaction for 5 hours to obtain a reactant iv;

5) 5-8 parts of reactant iii and 4-6 parts of reactant iv are placed into a reactor, 10-12 parts of glass powder are added, an ethanol solution is added, the temperature is rapidly raised to 60 ℃, and the reaction is carried out for 4 hours under the condition of heat preservation, so as to obtain reactant v;

6) and putting the reactant v into a reactor, adding an ethyl acetate solution, adding silicon dioxide particles, uniformly stirring, and evaporating the solution by rotary evaporation to obtain the catalyst.

The invention has the following advantages:

1) the glass sand in the machine-made sand is made of waste glass products into fine sand, so that resource waste is effectively reduced, resources are recycled, and meanwhile, the glass is stable in property, acid-resistant, free of harmful substances and incapable of easily reacting with other substances in the mortar. Because the surface of the sand made of glass is smooth, the surface needs to be modified, so that the mortar has good workability; meanwhile, the components in the glass fine sand react under the alkaline condition, so that the surface of the glass sand needs to be modified and protected. The lithium bentonite in the surface modifier is modified by natural bentonite through lithium carbonate, has the hydration expansion performance of sodium bentonite, also has the characteristics of organic bentonite, can be dissolved into colloid or fully swelled in water and polar organic solvent such as ethanol to enhance the viscosity of the coating, forms a solvation film and a three-dimensional network structure on the surface of base material particles to support and prevent the particles from sinking, and can quickly form a dry film layer due to the volatilization of the solvent ethanol when being dissolved in the ethanol; after being wetted by a small amount of water, the water-based adhesive has extremely high expansibility, thickening property and suspension stability in an alcohol solution, has certain wet-state and dry-state cohesiveness, and is low in price. The sepiolite powder added into the surface modifier can be used as an excellent carrier, and has certain expansibility, so that the shrinkage rate of the mortar can be reduced.

2) The modified retarder can not only delay the setting time, but also reduce the shrinkage phenomenon of the self-leveling mortar in the setting process. In addition, the modified retarder plays a role in bonding with a base surface in the mortar, and has excellent bonding performance. Wherein, the modified retarder is added with expansive rocks which have expansibility after absorbing water, and the added calcium bentonite can be matched with other components in the mortar, so that the shrinkage of the mortar can be effectively reduced. And the modified retarder is added with basalt fibers, is applied to mortar to form a framework with quartz sand, basalt sand and glass sand, and further increases the compressive strength of the mortar. The modified retarder contains hydrophobic components, can effectively improve the workability of mortar, improves the pumping capacity and is convenient for construction. The carbon nano tube is added to increase the binding power between the self-leveling mortar interface and the bottom surface base layer, the carbon nano tube has excellent surface effect, the smaller the particle size is, the larger the surface area is, and the surface particle lacks the coordination of adjacent atoms, so that the surface energy is increased and is extremely unstable, the carbon nano tube is easy to be combined with other atoms, and the stronger activity is shown, thereby increasing the binding power between the self-leveling mortar interface and the bottom surface base layer.

3) Because the modified glass sand and the modified retarder are selected from the mortar, in the process of setting, the modified glass sand and the retarder are in the environment of mortar setting and heat release, and the modified retarder and the modified surface of the glass sand are easy to generate connection reaction, so that the surface of the mortar is uneven, and the mortar cannot be truly self-leveled. Therefore, the inventor tries to add the leveling agent into the mortar, and after the leveling agent is added, the mortar has a tendency of self-flowing, but the groups in the self-flowing react with the modifier and the modification retarder in the modified glass sand, so that the modification retarder in the mortar cannot play a role of retarding, and meanwhile, the mortar has a flocculation caking phenomenon, and the mortar is non-uniform in coagulation blocks, so that the surface flatness of the mortar is greatly reduced. Therefore, the modified flatting agent is added, so that the flocculation and caking phenomena of the effective components in the mortar are effectively avoided, and the mortar can automatically level; meanwhile, the modified flatting agent has a group for eliminating foam, and can seal micro pores on the surface after the mortar is solidified, so that the surface of the mortar is not easily polluted when encountering oil stains, and the anti-fouling capability of the surface of the mortar is improved. The added glass powder can increase the smoothness of the ground made by the mortar after the mortar is condensed and has certain transparency, wherein the glass powder has the characteristics of good transparency, high hardness, uniform particle size distribution, good dispersibility, good intermiscibility with other components in the mortar and the like. The added sodium fluosilicate is the fluosilicate variety with the largest industrial consumption for building and construction materials; the mortar can be used as a moisture absorbent and a coagulant in mortar, and the workability of the mortar is improved.

Detailed description of the invention

Example 1

A dry-mixed self-leveling mortar comprises the following raw materials of P.O42.5 cement: 310 parts of high-alumina cement: 160 parts of 100-mesh machine-made sand: 425 parts of heavy calcium: 155 parts of lime calcium: 18 parts, 10 ten thousand of cellulose ether: 2 parts of rubber powder 4109: 13 parts of defoaming agent 361: 2 parts of water repellent 780: 3 parts of polycarboxylate water reducing agent 315: 2 parts, calcium formate: 7 parts, 1.5 parts of lithium carbonate, 2 parts of tartaric acid, 2 parts of modified retarder and 2.5 parts of modified flatting agent.

Wherein the machine-made sand is 100-mesh basalt sand: 100-mesh quartz sand: the mass ratio of the 100-mesh modified glass sand is 4: 5: 3, mixed sand.

The preparation method of the modified glass sand comprises the following steps:

1) cleaning: cleaning the waste glass product, removing soil impurities and metal residues on the surface, soaking the waste glass product in hydrochloric acid solution with the pH value of 4.8 for 10 hours, and cleaning for later use;

2) crushing: putting the waste glass product cleaned in the step 1) into a glass grinder for grinding until the ground glass sand can pass through a 120-mesh sieve, putting the ground glass sand into a cleaning pool, and cleaning glass powder and glass scraps in glass;

3) pretreatment: pretreating the glass sand cleaned in the step 2), putting the glass sand into a viscous solution, heating to 75 ℃ at the speed of 4 ℃/min, and keeping the temperature and heating for 4 hours;

4) modification: adding 11 parts of surface modifier into 28 parts of the glass sand pretreated in the step 3), adding 60% ethanol solution, heating to 85 ℃ at the speed of 5 ℃/min, carrying out heat preservation reaction for 5 hours, taking out, putting into a vacuum oven, and drying at the temperature of 450 ℃ for 5 hours to obtain the glass sand.

Wherein the viscous solution is a mixed solution of 10% of carboxymethyl fiber solution and 13% of calcium lignosulfonate in a volume ratio of 3: 2.

The preparation process of the surface modifier comprises the following steps:

a. putting 18 parts of lithium bentonite into a reactor, adding 7 parts of 1-benzyl-2, 3-epoxy n-propyl-tert-butyl carbamate, putting into a 60% ethanol solution, heating to 93 ℃ at the rate of 4 ℃, and carrying out heat preservation reaction for 5 hours to obtain an intermediate product i;

b. adding 4 parts of ethylene-vinyl acetate resin and 8 parts of 2-benzyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan into the intermediate product i, putting the intermediate product i into a high-pressure reaction kettle, adding a methanol solution, introducing nitrogen into the high-pressure reaction kettle, keeping the temperature at 150 ℃ and reacting for 3.5 hours to obtain an intermediate product ii;

c. adding 4 parts of tert-butyldiphenylchlorosilane into the intermediate product ii, adding a DMF solution, heating to 75 ℃, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product iii;

d. and (3) adding 13 parts of the intermediate product iii into a petroleum ether solution, completely dissolving the intermediate product iii, adding 13 parts of sepiolite powder, uniformly stirring, and evaporating petroleum ether liquid by rotary evaporation to obtain the sepiolite dry powder.

The preparation process of the modified retarder comprises the following steps:

i) putting 6 parts of sodium mononitrate into 10 parts of polyurethane, adding an ether solution, putting into a reactor, heating to 90 ℃ at the speed of 6 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain a product a;

ii) adding 4 parts of dibutyl tin dilaurate into the product a, adding a toluene solution, heating to 75 ℃ at the speed of 4 ℃/min, stirring while heating, performing heat preservation reaction for 3 hours, adding 4 parts of geniposide into the reactor, rapidly heating to 100 ℃, and performing heat preservation reaction for 6 hours to obtain a product b;

iii) adding 7 parts of basalt fiber into the product b, adding 6 parts of heptamethyldisilazane, adding a dichloromethane solution, heating to 110 ℃ at the speed of 3 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a product c;

iv) adding 13 parts of calcium bentonite into the product c, placing the product c into a vacuum homogenizing emulsifying kettle for homogenization treatment, adding 18 parts of carbon nano tubes into the treated mixture, adding an acetone solution, uniformly stirring, heating to 50 ℃ at the speed of 4 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the calcium bentonite.

The preparation process of the modified leveling agent comprises the following steps:

1) adding 18 parts of acrylic acid, 28 parts of ethanol and 8 parts of methanol into concentrated sulfuric acid, slowly heating to 95 ℃ at the speed of 4 ℃/min, and reacting for 7 hours in a heat preservation manner to obtain a reactant i;

2) adding 11 parts of tetraethyl ethylene diphosphate and an ethyl acetate solution into the reactant i, heating to 128 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a reactant ii;

3) adding 4 parts of (3,3, 3-trifluoropropyl) dichloromethylsilane to a reactant ii, adding a toluene solution, and putting the mixture into a high-pressure reaction kettle, wherein the pressure is 1.0Mpa, the temperature is 115 ℃, and the reaction is carried out for 5 hours under the condition of heat preservation to obtain a reactant iii;

4) adding 8 parts of sodium fluosilicate and 4 parts of 4-methyl benzene sulfinic acid methyl ester into a DMSO solution, heating to 80 ℃, stirring while heating, and carrying out heat preservation reaction for 5 hours to obtain a reactant iv;

5) putting 7 parts of reactant iii and 5 parts of reactant iv into a reactor, adding 11 parts of glass powder, adding an ethanol solution, quickly heating to 60 ℃, and keeping the temperature for reaction for 4 hours to obtain a reactant v;

6) and putting the reactant v into a reactor, adding an ethyl acetate solution, adding silicon dioxide particles, uniformly stirring, and evaporating the solution by rotary evaporation to obtain the catalyst.

Example 2

A dry-mixed self-leveling mortar comprises the following raw materials of P.O42.5 cement: 300 parts of high-alumina cement: 170 parts of 80-mesh machine-made sand: 450 parts of heavy calcium: 160 parts, ash calcium: 15 parts, 10 ten thousand of cellulose ether: 3 parts of rubber powder 4109: 12 parts of defoaming agent 361: 3 parts of water repellent 780: 4 parts of polycarboxylate water reducing agent 315: 1 part, calcium formate: 5 parts, 1 part of lithium carbonate, 3 parts of tartaric acid, 3 parts of modified retarder and 2 parts of modified flatting agent.

Wherein the machine-made sand is 80-mesh basalt sand: 120-mesh quartz sand: the mass ratio of the 80-mesh modified glass sand is 4: 5: 3, mixed sand.

The preparation method of the modified glass sand comprises the following steps:

1) cleaning: cleaning the waste glass product, removing soil impurities and metal residues on the surface, soaking the waste glass product in a hydrochloric acid solution with the pH value of 4.5 for 10 hours, and cleaning for later use;

2) crushing: putting the waste glass product cleaned in the step 1) into a glass grinder for grinding until the ground glass sand can pass through a 120-mesh sieve, putting the ground glass sand into a cleaning pool, and cleaning glass powder and glass scraps in glass;

3) pretreatment: pretreating the glass sand cleaned in the step 2), putting the glass sand into a viscous solution, heating to 75 ℃ at the speed of 3 ℃/min, and keeping the temperature and heating for 4 hours;

4) modification: adding 13 parts of surface modifier into 25 parts of the glass sand pretreated in the step 3), adding 60% ethanol solution, heating to 85 ℃ at the speed of 4 ℃/min, keeping the temperature for 5 hours, taking out, putting the glass sand into a vacuum oven, and drying at the temperature of 450 ℃ for 6 hours to obtain the glass sand.

Wherein the viscous solution is a mixed solution of 8% of carboxymethyl fiber solution and 15% of calcium lignosulfonate in a volume ratio of 3: 2.

The preparation process of the surface modifier comprises the following steps:

a. putting 20 parts of lithium bentonite into a reactor, adding 5 parts of 1-benzyl-2, 3-epoxy n-propyl-tert-butyl carbamate, adding 60% ethanol solution, heating to 90 ℃ at the rate of 5 ℃, and carrying out heat preservation reaction for 5 hours to obtain an intermediate product i;

b. adding 5 parts of ethylene-vinyl acetate resin and 5 parts of 2-benzyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan into the intermediate product i, putting the intermediate product i into a high-pressure reaction kettle, adding a methanol solution, introducing nitrogen into the high-pressure reaction kettle, keeping the temperature at 150 ℃ and reacting for 4 hours to obtain an intermediate product ii;

c. adding 5 parts of tert-butyldiphenylchlorosilane into the intermediate product ii, adding a DMF solution, heating to 75 ℃, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product iii;

d. and (3) adding 10 parts of intermediate product iii into a petroleum ether solution, completely dissolving the intermediate product iii, adding 15 parts of sepiolite powder, uniformly stirring, and evaporating petroleum ether liquid by rotary evaporation to obtain the sepiolite dry powder.

The preparation process of the modified retarder comprises the following steps:

i) putting 7 parts of sodium mononitrate into 8 parts of polyurethane, adding an ether solution, putting the mixture into a reactor, heating to 90 ℃ at the speed of 7 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain a product a;

ii) adding 5 parts of dibutyl tin dilaurate into the product a, adding a toluene solution, heating to 75 ℃ at the speed of 3 ℃/min, stirring while heating, performing heat preservation reaction for 3 hours, adding 5 parts of geniposide into the reactor, rapidly heating to 100 ℃, and performing heat preservation reaction for 6 hours to obtain a product b;

iii) adding 8 parts of basalt fiber into the product b, adding 4 parts of heptamethyldisilazane, adding a dichloromethane solution, heating to 110 ℃ at the speed of 4 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a product c;

iv) adding 10 parts of calcium bentonite into the product c, placing the product c into a vacuum homogenizing emulsifying kettle for homogenization treatment, adding 20 parts of carbon nano tubes into the treated mixture, adding an acetone solution, uniformly stirring, heating to 50 ℃ at the speed of 3 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the calcium bentonite.

The preparation process of the modified leveling agent comprises the following steps:

1) adding 20 parts of acrylic acid, 25 parts of ethanol and 10 parts of methanol into concentrated sulfuric acid, slowly heating to 95 ℃ at the speed of 3 ℃/min, and reacting for 7 hours in a heat preservation manner to obtain a reactant i;

2) adding 13 parts of tetraethyl ethylene diphosphate and an ethyl acetate solution into the reactant i, heating to 130 ℃ at the speed of 1 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a reactant ii;

3) adding 3 parts of (3,3, 3-trifluoropropyl) dichloromethylsilane to a reactant ii, adding a toluene solution, and putting the mixture into a high-pressure reaction kettle, wherein the pressure is 1.0Mpa, the temperature is 115 ℃, and the reaction is carried out for 5 hours under the condition of heat preservation to obtain a reactant iii;

4) adding 10 parts of sodium fluosilicate and 3 parts of 4-methyl benzene sulfinic acid methyl ester into a DMSO solution, heating to 80 ℃, stirring while heating, and carrying out heat preservation reaction for 5 hours to obtain a reactant iv;

5) putting 8 parts of reactant iii and 4 parts of reactant iv into a reactor, adding 12 parts of glass powder, adding an ethanol solution, quickly heating to 60 ℃, and keeping the temperature for reaction for 4 hours to obtain a reactant v;

6) and putting the reactant v into a reactor, adding an ethyl acetate solution, adding silicon dioxide particles, uniformly stirring, and evaporating the solution by rotary evaporation to obtain the catalyst.

Example 3

A dry-mixed self-leveling mortar comprises the following raw materials of P.O42.5 cement: 320 parts of high-alumina cement: 150 parts of 120-mesh machine-made sand: 400 parts of heavy calcium: 150 parts, ash calcium: 20 parts, 10 ten thousand of cellulose ether: 1 part, rubber powder 4109: 15 parts of defoaming agent 361: 1 part of water repellent 780: 2 parts of polycarboxylate water reducing agent 315: 3 parts, calcium formate: 8 parts, 2 parts of lithium carbonate, 1 part of tartaric acid, 1 part of modified retarder and 3 parts of modified flatting agent.

Wherein the machine-made sand is 120-mesh basalt sand: 80-mesh quartz sand: the mass ratio of the 120-mesh modified glass sand is 4: 5: 3, mixed sand.

The preparation method of the modified glass sand comprises the following steps:

1) cleaning: cleaning the waste glass product, removing soil impurities and metal residues on the surface, soaking the waste glass product in a hydrochloric acid solution with the pH value of 5.0 for 10 hours, and cleaning for later use;

2) crushing: putting the waste glass product cleaned in the step 1) into a glass grinder for grinding until the ground glass sand can pass through a 120-mesh sieve, putting the ground glass sand into a cleaning pool, and cleaning glass powder and glass scraps in glass;

3) pretreatment: pretreating the glass sand cleaned in the step 2), putting the glass sand into a viscous solution, heating to 75 ℃ at the speed of 5 ℃/min, and keeping the temperature and heating for 4 hours;

4) modification: adding 8 parts of surface modifier into 30 parts of the glass sand pretreated in the step 3), adding 60% ethanol solution, heating to 85 ℃ at the speed of 6 ℃/min, keeping the temperature for 5 hours, taking out, putting the glass sand into a vacuum oven, and drying at the temperature of 450 ℃ for 4 hours to obtain the glass sand.

Wherein the viscous solution is a mixed solution of 12% of carboxymethyl fiber solution and 10% of calcium lignosulfonate in a volume ratio of 3: 2.

The preparation process of the surface modifier comprises the following steps:

a. putting 15 parts of lithium bentonite into a reactor, adding 8 parts of 1-benzyl-2, 3-epoxy n-propyl-tert-butyl carbamate, putting into a 60% ethanol solution, heating to 95 ℃ at the rate of 3 ℃, and carrying out heat preservation reaction for 5 hours to obtain an intermediate product i;

b. adding 3 parts of ethylene-vinyl acetate resin and 10 parts of 2-benzyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan into the intermediate product i, putting the intermediate product i into a high-pressure reaction kettle, adding a methanol solution, introducing nitrogen into the high-pressure reaction kettle, keeping the temperature at 150 ℃ and reacting for 3 hours to obtain an intermediate product ii;

c. adding 3 parts of tert-butyldiphenylchlorosilane into the intermediate product ii, adding a DMF solution, heating to 75 ℃, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product iii;

d. and (3) adding 15 parts of intermediate product iii into a petroleum ether solution, completely dissolving the intermediate product iii, adding 10 parts of sepiolite powder, uniformly stirring, and evaporating petroleum ether liquid by rotary evaporation to obtain the sepiolite dry powder.

The preparation process of the modified retarder comprises the following steps:

i) putting 5 parts of sodium mononitrate into 12 parts of polyurethane, adding an ether solution, putting the mixture into a reactor, heating to 90 ℃ at the speed of 5 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain a product a;

ii) adding 3 parts of dibutyl tin dilaurate into the product a, adding a toluene solution, heating to 75 ℃ at the speed of 5 ℃/min, stirring while heating, performing heat preservation reaction for 3 hours, adding 3 parts of geniposide into the reactor, rapidly heating to 100 ℃, and performing heat preservation reaction for 6 hours to obtain a product b;

iii) adding 5 parts of basalt fiber into the product b, adding 7 parts of heptamethyldisilazane, adding a dichloromethane solution, heating to 110 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a product c;

iv) adding 15 parts of calcium bentonite into the product c, placing the product c into a vacuum homogenizing emulsifying kettle for homogenization treatment, adding 15 parts of carbon nano tubes into the treated mixture, adding an acetone solution, uniformly stirring, heating to 50 ℃ at the speed of 5 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the calcium bentonite.

The preparation process of the modified leveling agent comprises the following steps:

1) adding concentrated sulfuric acid into 15 parts of acrylic acid, 30 parts of ethanol and 5 parts of methanol, slowly heating to 95 ℃ at the speed of 5 ℃/min, and reacting for 7 hours in a heat preservation manner to obtain a reactant i;

2) adding 10 parts of tetraethyl ethylene diphosphate and an ethyl acetate solution into the reactant i, heating to 125-130 ℃ at the speed of 3 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a reactant ii;

3) adding 5 parts of (3,3, 3-trifluoropropyl) dichloromethylsilane to a reactant ii, adding a toluene solution, and putting the mixture into a high-pressure reaction kettle, wherein the pressure is 1.0Mpa, the temperature is 115 ℃, and the reaction is carried out for 5 hours under the condition of heat preservation to obtain a reactant iii;

4) adding 7 parts of sodium fluosilicate and 5 parts of 4-methyl benzene sulfinic acid methyl ester into a DMSO solution, heating to 80 ℃, stirring while heating, and carrying out heat preservation reaction for 5 hours to obtain a reactant iv;

5) putting 5 parts of reactant iii and 6 parts of reactant iv into a reactor, adding 10 parts of glass powder, adding an ethanol solution, quickly heating to 60 ℃, and keeping the temperature for reaction for 4 hours to obtain a reactant v;

6) and putting the reactant v into a reactor, adding an ethyl acetate solution, adding silicon dioxide particles, uniformly stirring, and evaporating the solution by rotary evaporation to obtain the catalyst.

Comparative example 1

A dry-mixed self-leveling mortar.

Wherein the raw materials comprise P.O42.5 cement: 310 parts of high-alumina cement: 160 parts of 100-mesh machine-made sand: 425 parts of heavy calcium: 155 parts of lime calcium: 18 parts, 10 ten thousand of cellulose ether: 2 parts of rubber powder 4109: 13 parts of defoaming agent 361: 2 parts of water repellent 780: 3 parts of polycarboxylate water reducing agent 315: 2 parts, calcium formate: 7 parts, 1.5 parts of lithium carbonate, 2 parts of tartaric acid, 5 parts of modified retarder and 2.5 parts of modified flatting agent.

The rest is the same as example 1.

Comparative example 2

A dry-mixed self-leveling mortar.

Wherein the raw materials comprise P.O42.5 cement: 310 parts of high-alumina cement: 160 parts of 100-mesh machine-made sand: 425 parts of heavy calcium: 155 parts of lime calcium: 18 parts, 10 ten thousand of cellulose ether: 2 parts of rubber powder 4109: 13 parts of defoaming agent 361: 2 parts of water repellent 780: 3 parts of polycarboxylate water reducing agent 315: 2 parts, calcium formate: 7 parts, 1.5 parts of lithium carbonate, 2 parts of tartaric acid, 2 parts of modified retarder and 5 parts of modified flatting agent.

The rest is the same as example 1.

Comparative example 3

A dry-mixed self-leveling mortar.

Wherein the raw materials comprise P.O42.5 cement: 310 parts of high-alumina cement: 160 parts of 100-mesh natural sand: 425 parts of heavy calcium: 155 parts of lime calcium: 18 parts, 10 ten thousand of cellulose ether: 2 parts of rubber powder 4109: 13 parts of defoaming agent 361: 2 parts of water repellent 780: 3 parts of polycarboxylate water reducing agent 315: 2 parts, calcium formate: 7 parts, 1.5 parts of lithium carbonate, 2 parts of tartaric acid, 2 parts of modified retarder and 2.5 parts of modified flatting agent.

The rest is the same as example 1.

Comparative example 4

A dry-mixed self-leveling mortar.

Wherein the machine-made sand is 100-mesh basalt sand: 100-mesh quartz sand: the mass ratio of the 100-mesh modified glass sand is 4: 5: 5, mixed sand.

The rest is the same as example 1.

Comparative example 5

A dry-mixed self-leveling mortar.

Wherein the machine-made sand is 100-mesh basalt sand: 100-mesh quartz sand: the mass ratio of the 100-mesh glass sand is 4: 5: 3, mixed sand.

The rest is the same as example 1.

Comparative example 6

A dry-mixed self-leveling mortar.

The preparation method of the modified glass sand comprises the following steps:

1) cleaning: cleaning the waste glass product, removing soil impurities and metal residues on the surface, soaking the waste glass product in hydrochloric acid solution with the pH value of 4.8 for 10 hours, and cleaning for later use;

2) crushing: putting the waste glass product cleaned in the step 1) into a glass grinder for grinding until the ground glass sand can pass through a 120-mesh sieve, putting the ground glass sand into a cleaning pool, and cleaning glass powder and glass scraps in glass;

3) modification: adding 11 parts of surface modifier into 28 parts of the glass sand crushed in the step 2), adding 60% ethanol solution, heating to 85 ℃ at the speed of 5 ℃/min, keeping the temperature for 5 hours, taking out, putting the glass sand into a vacuum oven, and drying at the temperature of 450 ℃ for 5 hours to obtain the glass sand.

The rest is the same as example 1.

Comparative example 7

A dry-mixed self-leveling mortar.

The preparation method of the modified glass sand comprises the following steps:

1) cleaning: cleaning the waste glass product, removing soil impurities and metal residues on the surface, soaking the waste glass product in hydrochloric acid solution with the pH value of 4.8 for 10 hours, and cleaning for later use;

2) crushing: putting the waste glass product cleaned in the step 1) into a glass grinder for grinding until the ground glass sand can pass through a 120-mesh sieve, putting the ground glass sand into a cleaning pool, and cleaning glass powder and glass scraps in glass;

3) pretreatment: pretreating the glass sand cleaned in the step 2), putting the glass sand into a viscous solution, and soaking for 4 hours at normal temperature;

4) modification: adding 11 parts of surface modifier into 28 parts of the glass sand pretreated in the step 3), adding 60% ethanol solution, heating to 85 ℃ at the speed of 5 ℃/min, carrying out heat preservation reaction for 5 hours, taking out, putting into a vacuum oven, and drying at the temperature of 450 ℃ for 5 hours to obtain the glass sand.

The rest is the same as example 1.

Comparative example 8

A dry-mixed self-leveling mortar.

The preparation method of the modified glass sand comprises the following steps:

1) cleaning: cleaning the waste glass product, removing soil impurities and metal residues on the surface, soaking the waste glass product in hydrochloric acid solution with the pH value of 4.8 for 10 hours, and cleaning for later use;

2) crushing: putting the waste glass product cleaned in the step 1) into a glass grinder for grinding until the ground glass sand can pass through a 120-mesh sieve, putting the ground glass sand into a cleaning pool, and cleaning glass powder and glass scraps in glass;

3) pretreatment: pretreating the glass sand cleaned in the step 2), putting the glass sand into a viscous solution, heating to 75 ℃ at the speed of 4 ℃/min, and keeping the temperature and heating for 4 hours;

4) modification: adding 11 parts of surface modifier into 28 parts of the glass sand pretreated in the step 3), adding 60% ethanol solution, heating to 120 ℃ at the speed of 5 ℃/min, carrying out heat preservation reaction for 5 hours, taking out, putting into a vacuum oven, and drying at the temperature of 450 ℃ for 5 hours to obtain the glass sand.

The rest is the same as example 1.

Comparative example 9

A dry-mixed self-leveling mortar.

The preparation method of the modified glass sand comprises the following steps:

1) cleaning: cleaning the waste glass product, removing soil impurities and metal residues on the surface, soaking the waste glass product in hydrochloric acid solution with the pH value of 4.8 for 10 hours, and cleaning for later use;

2) crushing: putting the waste glass product cleaned in the step 1) into a glass grinder for grinding until the ground glass sand can pass through a 120-mesh sieve, putting the ground glass sand into a cleaning pool, and cleaning glass powder and glass scraps in glass;

3) pretreatment: pretreating the glass sand cleaned in the step 2), putting the glass sand into a viscous solution, heating to 75 ℃ at the speed of 4 ℃/min, and keeping the temperature and heating for 4 hours;

4) modification: adding 15 parts of surface modifier into 28 parts of the glass sand pretreated in the step 3), adding 60% ethanol solution, heating to 85 ℃ at the speed of 5 ℃/min, carrying out heat preservation reaction for 5 hours, taking out, putting into a vacuum oven, and drying at the temperature of 450 ℃ for 5 hours to obtain the glass sand.

The rest is the same as example 1.

Comparative example 10

A dry-mixed self-leveling mortar.

Wherein the viscous solution is a 10% carboxymethyl cellulose solution.

The rest is the same as example 1.

Comparative example 11

A dry-mixed self-leveling mortar.

Wherein the viscous solution is a mixed solution of 10% of carboxymethyl fiber solution and 13% of calcium lignosulfonate in a volume ratio of 1: 1.

The rest is the same as example 1.

Comparative example 12

A dry-mixed self-leveling mortar.

The preparation process of the surface modifier comprises the following steps:

a. putting 13 parts of lithium bentonite into a reactor, adding 7 parts of 1-benzyl-2, 3-epoxy n-propyl-tert-butyl carbamate, putting into a 60% ethanol solution, heating to 93 ℃ at the rate of 4 ℃, and carrying out heat preservation reaction for 5 hours to obtain an intermediate product i;

b. adding 4 parts of ethylene-vinyl acetate resin and 8 parts of 2-benzyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan into the intermediate product i, putting the intermediate product i into a high-pressure reaction kettle, adding a methanol solution, introducing nitrogen into the high-pressure reaction kettle, keeping the temperature at 150 ℃ and reacting for 3.5 hours to obtain an intermediate product ii;

c. adding 4 parts of tert-butyldiphenylchlorosilane into the intermediate product ii, adding a DMF solution, heating to 75 ℃, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product iii;

d. and (3) adding 13 parts of the intermediate product iii into a petroleum ether solution, completely dissolving the intermediate product iii, adding 13 parts of sepiolite powder, uniformly stirring, and evaporating petroleum ether liquid by rotary evaporation to obtain the sepiolite dry powder.

The rest is the same as example 1.

Comparative example 13

A dry-mixed self-leveling mortar.

The preparation process of the surface modifier comprises the following steps:

a. putting 18 parts of lithium bentonite into a reactor, adding 10 parts of 1-benzyl-2, 3-epoxy n-propyl-tert-butyl carbamate, adding 60% ethanol solution, heating to 93 ℃ at the rate of 4 ℃, and carrying out heat preservation reaction for 5 hours to obtain an intermediate product i;

b. adding 4 parts of ethylene-vinyl acetate resin and 8 parts of 2-benzyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan into the intermediate product i, putting the intermediate product i into a high-pressure reaction kettle, adding a methanol solution, introducing nitrogen into the high-pressure reaction kettle, keeping the temperature at 150 ℃ and reacting for 3.5 hours to obtain an intermediate product ii;

c. adding 4 parts of tert-butyldiphenylchlorosilane into the intermediate product ii, adding a DMF solution, heating to 75 ℃, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product iii;

d. and (3) adding 13 parts of the intermediate product iii into a petroleum ether solution, completely dissolving the intermediate product iii, adding 13 parts of sepiolite powder, uniformly stirring, and evaporating petroleum ether liquid by rotary evaporation to obtain the sepiolite dry powder.

The rest is the same as example 1.

Comparative example 14

A dry-mixed self-leveling mortar.

The preparation process of the surface modifier comprises the following steps:

a. putting 18 parts of lithium bentonite into a reactor, adding 7 parts of 1-benzyl-2, 3-epoxy n-propyl-tert-butyl carbamate, putting into a 60% ethanol solution, heating to 93 ℃ at the rate of 4 ℃, and carrying out heat preservation reaction for 5 hours to obtain an intermediate product i;

b. adding 2 parts of ethylene-vinyl acetate resin and 8 parts of 2-benzyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan into the intermediate product i, putting the intermediate product i into a high-pressure reaction kettle, adding a methanol solution, introducing nitrogen into the high-pressure reaction kettle, keeping the temperature at 150 ℃ and reacting for 3.5 hours to obtain an intermediate product ii;

c. adding 4 parts of tert-butyldiphenylchlorosilane into the intermediate product ii, adding a DMF solution, heating to 75 ℃, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product iii;

d. and (3) adding 13 parts of the intermediate product iii into a petroleum ether solution, completely dissolving the intermediate product iii, adding 13 parts of sepiolite powder, uniformly stirring, and evaporating petroleum ether liquid by rotary evaporation to obtain the sepiolite dry powder.

The rest is the same as example 1.

Comparative example 15

A dry-mixed self-leveling mortar.

The preparation process of the surface modifier comprises the following steps:

a. putting 18 parts of lithium bentonite into a reactor, adding 7 parts of 1-benzyl-2, 3-epoxy n-propyl-tert-butyl carbamate, putting into a 60% ethanol solution, heating to 93 ℃ at the rate of 4 ℃, and carrying out heat preservation reaction for 5 hours to obtain an intermediate product i;

b. adding 4 parts of ethylene-vinyl acetate resin and 12 parts of 2-benzyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan into the intermediate product i, putting the intermediate product i into a high-pressure reaction kettle, adding a methanol solution, introducing nitrogen into the high-pressure reaction kettle, keeping the temperature at 150 ℃ and reacting for 3.5 hours to obtain an intermediate product ii;

c. adding 4 parts of tert-butyldiphenylchlorosilane into the intermediate product ii, adding a DMF solution, heating to 75 ℃, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product iii;

d. and (3) adding 13 parts of the intermediate product iii into a petroleum ether solution, completely dissolving the intermediate product iii, adding 13 parts of sepiolite powder, uniformly stirring, and evaporating petroleum ether liquid by rotary evaporation to obtain the sepiolite dry powder.

The rest is the same as example 1.

Comparative example 16

A dry-mixed self-leveling mortar.

The preparation process of the surface modifier comprises the following steps:

a. putting 18 parts of lithium bentonite into a reactor, adding 7 parts of 1-benzyl-2, 3-epoxy n-propyl-tert-butyl carbamate, putting into a 60% ethanol solution, heating to 93 ℃ at the rate of 4 ℃, and carrying out heat preservation reaction for 5 hours to obtain an intermediate product i;

b. adding 4 parts of ethylene-vinyl acetate resin and 8 parts of 2-benzyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan into the intermediate product i, putting the intermediate product i into a high-pressure reaction kettle, adding a methanol solution, introducing nitrogen into the high-pressure reaction kettle, keeping the temperature at 130 ℃ and reacting for 3.5 hours to obtain an intermediate product ii;

c. adding 4 parts of tert-butyldiphenylchlorosilane into the intermediate product ii, adding a DMF solution, heating to 75 ℃, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product iii;

d. and (3) adding 13 parts of the intermediate product iii into a petroleum ether solution, completely dissolving the intermediate product iii, adding 13 parts of sepiolite powder, uniformly stirring, and evaporating petroleum ether liquid by rotary evaporation to obtain the sepiolite dry powder.

The rest is the same as example 1.

Comparative example 17

A dry-mixed self-leveling mortar.

The preparation process of the surface modifier comprises the following steps:

a. putting 18 parts of lithium bentonite into a reactor, adding 7 parts of 1-benzyl-2, 3-epoxy n-propyl-tert-butyl carbamate, putting into a 60% ethanol solution, heating to 93 ℃ at the rate of 4 ℃, and carrying out heat preservation reaction for 5 hours to obtain an intermediate product i;

b. adding 4 parts of ethylene-vinyl acetate resin and 8 parts of 2-benzyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan into the intermediate product i, putting the intermediate product i into a high-pressure reaction kettle, adding a methanol solution, introducing nitrogen into the high-pressure reaction kettle, keeping the temperature at 150 ℃ and reacting for 3.5 hours to obtain an intermediate product ii;

c. adding 4 parts of tert-butyldiphenylchlorosilane into the intermediate product ii, adding a DMF solution, heating to 100 ℃, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product iii;

d. and (3) adding 13 parts of the intermediate product iii into a petroleum ether solution, completely dissolving the intermediate product iii, adding 13 parts of sepiolite powder, uniformly stirring, and evaporating petroleum ether liquid by rotary evaporation to obtain the sepiolite dry powder.

The rest is the same as example 1.

Comparative example 18

A dry-mixed self-leveling mortar.

The preparation process of the surface modifier comprises the following steps:

a. putting 18 parts of lithium bentonite into a reactor, adding 7 parts of 1-benzyl-2, 3-epoxy n-propyl-tert-butyl carbamate, putting into a 60% ethanol solution, heating to 93 ℃ at the rate of 4 ℃, and carrying out heat preservation reaction for 5 hours to obtain an intermediate product i;

b. adding 4 parts of ethylene-vinyl acetate resin and 8 parts of 2-benzyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan into the intermediate product i, putting the intermediate product i into a high-pressure reaction kettle, adding a methanol solution, introducing nitrogen into the high-pressure reaction kettle, keeping the temperature at 150 ℃ and reacting for 3.5 hours to obtain an intermediate product ii;

c. adding 4 parts of tert-butyldiphenylchlorosilane into the intermediate product ii, adding a DMF solution, heating to 75 ℃, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product iii;

d. and (3) adding 13 parts of the intermediate product iii into a petroleum ether solution, completely dissolving the intermediate product iii, adding 8 parts of sepiolite powder, uniformly stirring, and evaporating petroleum ether liquid by rotary evaporation to obtain the sepiolite dry powder.

The rest is the same as example 1.

Comparative example 19

A dry-mixed self-leveling mortar.

The preparation process of the modified retarder comprises the following steps:

i) putting 9 parts of sodium mononitrate into 10 parts of polyurethane, adding an ether solution, putting into a reactor, heating to 90 ℃ at the speed of 6 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain a product a;

ii) adding 4 parts of dibutyl tin dilaurate into the product a, adding a toluene solution, heating to 75 ℃ at the speed of 4 ℃/min, stirring while heating, performing heat preservation reaction for 3 hours, adding 4 parts of geniposide into the reactor, rapidly heating to 100 ℃, and performing heat preservation reaction for 6 hours to obtain a product b;

iii) adding 7 parts of basalt fiber into the product b, adding 6 parts of heptamethyldisilazane, adding a dichloromethane solution, heating to 110 ℃ at the speed of 3 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a product c;

iv) adding 13 parts of calcium bentonite into the product c, placing the product c into a vacuum homogenizing emulsifying kettle for homogenization treatment, adding 18 parts of carbon nano tubes into the treated mixture, adding an acetone solution, uniformly stirring, heating to 50 ℃ at the speed of 4 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the calcium bentonite.

The rest is the same as example 1.

Comparative example 20

A dry-mixed self-leveling mortar.

The preparation process of the modified retarder comprises the following steps:

i) putting 6 parts of sodium mononitrate into 6 parts of polyurethane, adding an ether solution, putting the mixture into a reactor, heating to 90 ℃ at the speed of 6 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain a product a;

ii) adding 4 parts of dibutyl tin dilaurate into the product a, adding a toluene solution, heating to 75 ℃ at the speed of 4 ℃/min, stirring while heating, performing heat preservation reaction for 3 hours, adding 4 parts of geniposide into the reactor, rapidly heating to 100 ℃, and performing heat preservation reaction for 6 hours to obtain a product b;

iii) adding 7 parts of basalt fiber into the product b, adding 6 parts of heptamethyldisilazane, adding a dichloromethane solution, heating to 110 ℃ at the speed of 3 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a product c;

iv) adding 13 parts of calcium bentonite into the product c, placing the product c into a vacuum homogenizing emulsifying kettle for homogenization treatment, adding 18 parts of carbon nano tubes into the treated mixture, adding an acetone solution, uniformly stirring, heating to 50 ℃ at the speed of 4 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the calcium bentonite.

The rest is the same as example 1.

Comparative example 21

A dry-mixed self-leveling mortar.

The preparation process of the modified retarder comprises the following steps:

i) putting 6 parts of sodium mononitrate into 10 parts of polyurethane, adding an ether solution, putting into a reactor, heating to 90 ℃ at the speed of 6 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain a product a;

ii) adding 4 parts of dibutyl tin dilaurate and 4 parts of geniposide into the product a, adding a toluene solution, heating to 100 ℃ at the speed of 4 ℃/min, and carrying out heat preservation reaction for 9h to obtain a product b;

iii) adding 7 parts of basalt fiber into the product b, adding 6 parts of heptamethyldisilazane, adding a dichloromethane solution, heating to 110 ℃ at the speed of 3 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a product c;

iv) adding 13 parts of calcium bentonite into the product c, placing the product c into a vacuum homogenizing emulsifying kettle for homogenization treatment, adding 18 parts of carbon nano tubes into the treated mixture, adding an acetone solution, uniformly stirring, heating to 50 ℃ at the speed of 4 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the calcium bentonite.

The rest is the same as example 1.

Comparative example 22

A dry-mixed self-leveling mortar.

The preparation process of the modified retarder comprises the following steps:

i) putting 6 parts of sodium mononitrate into 10 parts of polyurethane, adding an ether solution, putting into a reactor, heating to 90 ℃ at the speed of 6 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain a product a;

ii) adding 7 parts of dibutyl tin dilaurate into the product a, adding a toluene solution, heating to 75 ℃ at the speed of 4 ℃/min, stirring while heating, performing heat preservation reaction for 3 hours, adding 4 parts of geniposide into the reactor, rapidly heating to 100 ℃, and performing heat preservation reaction for 6 hours to obtain a product b;

iii) adding 7 parts of basalt fiber into the product b, adding 6 parts of heptamethyldisilazane, adding a dichloromethane solution, heating to 110 ℃ at the speed of 3 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a product c;

iv) adding 13 parts of calcium bentonite into the product c, placing the product c into a vacuum homogenizing emulsifying kettle for homogenization treatment, adding 18 parts of carbon nano tubes into the treated mixture, adding an acetone solution, uniformly stirring, heating to 50 ℃ at the speed of 4 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the calcium bentonite.

The rest is the same as example 1.

Comparative example 23

A dry-mixed self-leveling mortar.

The preparation process of the modified retarder comprises the following steps:

i) putting 6 parts of sodium mononitrate into 10 parts of polyurethane, adding an ether solution, putting into a reactor, heating to 90 ℃ at the speed of 6 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain a product a;

ii) adding 4 parts of dibutyl tin dilaurate into the product a, adding a toluene solution, heating to 75 ℃ at the speed of 4 ℃/min, stirring while heating, performing heat preservation reaction for 3 hours, adding 4 parts of geniposide into the reactor, rapidly heating to 100 ℃, and performing heat preservation reaction for 6 hours to obtain a product b;

iii) adding 10 parts of basalt fiber into the product b, adding 6 parts of heptamethyldisilazane, adding a dichloromethane solution, heating to 110 ℃ at the speed of 3 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a product c;

iv) adding 13 parts of calcium bentonite into the product c, placing the product c into a vacuum homogenizing emulsifying kettle for homogenization treatment, adding 18 parts of carbon nano tubes into the treated mixture, adding an acetone solution, uniformly stirring, heating to 50 ℃ at the speed of 4 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the calcium bentonite.

The rest is the same as example 1.

Comparative example 24

A dry-mixed self-leveling mortar.

The preparation process of the modified retarder comprises the following steps:

i) putting 6 parts of sodium mononitrate into 10 parts of polyurethane, adding an ether solution, putting into a reactor, heating to 90 ℃ at the speed of 6 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain a product a;

ii) adding 4 parts of dibutyl tin dilaurate into the product a, adding a toluene solution, heating to 75 ℃ at the speed of 4 ℃/min, stirring while heating, performing heat preservation reaction for 3 hours, adding 4 parts of geniposide into the reactor, rapidly heating to 100 ℃, and performing heat preservation reaction for 6 hours to obtain a product b;

iii) adding 7 parts of basalt fiber into the product b, adding 6 parts of heptamethyldisilazane, adding a dichloromethane solution, rapidly heating to 110 ℃, and carrying out heat preservation reaction for 5 hours to obtain a product c;

iv) adding 13 parts of calcium bentonite into the product c, placing the product c into a vacuum homogenizing emulsifying kettle for homogenization treatment, adding 18 parts of carbon nano tubes into the treated mixture, adding an acetone solution, uniformly stirring, heating to 50 ℃ at the speed of 4 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the calcium bentonite.

The rest is the same as example 1.

Comparative example 25

A dry-mixed self-leveling mortar.

The preparation process of the modified retarder comprises the following steps:

i) putting 6 parts of sodium mononitrate into 10 parts of polyurethane, adding an ether solution, putting into a reactor, heating to 90 ℃ at the speed of 6 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain a product a;

ii) adding 4 parts of dibutyl tin dilaurate into the product a, adding a toluene solution, heating to 75 ℃ at the speed of 4 ℃/min, stirring while heating, performing heat preservation reaction for 3 hours, adding 4 parts of geniposide into the reactor, rapidly heating to 100 ℃, and performing heat preservation reaction for 6 hours to obtain a product b;

iii) adding 7 parts of basalt fiber into the product b, adding 6 parts of heptamethyldisilazane, adding a dichloromethane solution, heating to 110 ℃ at the speed of 3 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a product c;

iv) adding 13 parts of calcium bentonite into the product c, placing the product c into a vacuum homogenizing emulsifying kettle for homogenization treatment, adding an acetone solution into the treated mixture, uniformly stirring, heating to 50 ℃ at the speed of 4 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the calcium bentonite.

The rest is the same as example 1.

Comparative example 26

A dry-mixed self-leveling mortar.

The preparation process of the modified retarder comprises the following steps:

i) putting 6 parts of sodium mononitrate into 10 parts of polyurethane, adding an ether solution, putting into a reactor, heating to 90 ℃ at the speed of 6 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain a product a;

ii) adding 4 parts of dibutyl tin dilaurate into the product a, adding a toluene solution, heating to 75 ℃ at the speed of 4 ℃/min, stirring while heating, performing heat preservation reaction for 3 hours, adding 4 parts of geniposide into the reactor, rapidly heating to 100 ℃, and performing heat preservation reaction for 6 hours to obtain a product b;

iii) adding 7 parts of basalt fiber into the product b, adding 6 parts of heptamethyldisilazane, adding a dichloromethane solution, heating to 110 ℃ at the speed of 3 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a product c;

iv) adding 8 parts of calcium bentonite into the product c, placing the product c into a vacuum homogenizing emulsifying kettle for homogenization treatment, adding 18 parts of carbon nano tubes into the treated mixture, adding an acetone solution, uniformly stirring, heating to 50 ℃ at the speed of 4 ℃/min, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the calcium bentonite.

The rest is the same as example 1.

Comparative example 27

A dry-mixed self-leveling mortar.

Wherein the retarder is a commonly sold retarder on the market and has the model of CQ-SHJ 09.

The rest is the same as example 1.

Comparative example 28

A dry-mixed self-leveling mortar.

The preparation process of the modified leveling agent comprises the following steps:

1) adding 18 parts of acrylic acid, 28 parts of ethanol and 8 parts of methanol into concentrated sulfuric acid, quickly heating to 95 ℃, and reacting for 7 hours in a heat preservation manner to obtain a reactant i;

2) adding 11 parts of tetraethyl ethylene diphosphate and an ethyl acetate solution into the reactant i, heating to 128 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a reactant ii;

3) adding 4 parts of (3,3, 3-trifluoropropyl) dichloromethylsilane to a reactant ii, adding a toluene solution, and putting the mixture into a high-pressure reaction kettle, wherein the pressure is 1.0Mpa, the temperature is 115 ℃, and the reaction is carried out for 5 hours under the condition of heat preservation to obtain a reactant iii;

4) adding 8 parts of sodium fluosilicate and 4 parts of 4-methyl benzene sulfinic acid methyl ester into a DMSO solution, heating to 80 ℃, stirring while heating, and carrying out heat preservation reaction for 5 hours to obtain a reactant iv;

5) putting 7 parts of reactant iii and 5 parts of reactant iv into a reactor, adding 11 parts of glass powder, adding an ethanol solution, quickly heating to 60 ℃, and keeping the temperature for reaction for 4 hours to obtain a reactant v;

6) and putting the reactant v into a reactor, adding an ethyl acetate solution, adding silicon dioxide particles, uniformly stirring, and evaporating the solution by rotary evaporation to obtain the catalyst.

The rest is the same as example 1.

Comparative example 29

A dry-mixed self-leveling mortar.

The preparation process of the modified leveling agent comprises the following steps:

1) adding 18 parts of acrylic acid, 28 parts of ethanol and 8 parts of methanol into concentrated sulfuric acid, slowly heating to 95 ℃ at the speed of 4 ℃/min, and reacting for 7 hours in a heat preservation manner to obtain a reactant i;

2) adding 15 parts of tetraethyl ethylene diphosphate and an ethyl acetate solution into the reactant i, heating to 128 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a reactant ii;

3) adding 4 parts of (3,3, 3-trifluoropropyl) dichloromethylsilane to a reactant ii, adding a toluene solution, and putting the mixture into a high-pressure reaction kettle, wherein the pressure is 1.0Mpa, the temperature is 115 ℃, and the reaction is carried out for 5 hours under the condition of heat preservation to obtain a reactant iii;

4) adding 8 parts of sodium fluosilicate and 4 parts of 4-methyl benzene sulfinic acid methyl ester into a DMSO solution, heating to 80 ℃, stirring while heating, and carrying out heat preservation reaction for 5 hours to obtain a reactant iv;

5) putting 7 parts of reactant iii and 5 parts of reactant iv into a reactor, adding 11 parts of glass powder, adding an ethanol solution, quickly heating to 60 ℃, and keeping the temperature for reaction for 4 hours to obtain a reactant v;

6) and putting the reactant v into a reactor, adding an ethyl acetate solution, adding silicon dioxide particles, uniformly stirring, and evaporating the solution by rotary evaporation to obtain the catalyst.

The rest is the same as example 1.

Comparative example 30

A dry-mixed self-leveling mortar.

The preparation process of the modified leveling agent comprises the following steps:

1) adding 18 parts of acrylic acid, 28 parts of ethanol and 8 parts of methanol into concentrated sulfuric acid, slowly heating to 95 ℃ at the speed of 4 ℃/min, and reacting for 7 hours in a heat preservation manner to obtain a reactant i;

2) adding 11 parts of tetraethyl ethylene diphosphate and an ethyl acetate solution into the reactant i, heating to 128 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a reactant ii;

3) adding 8 parts of (3,3, 3-trifluoropropyl) dichloromethylsilane to a reactant ii, adding a toluene solution, and putting the mixture into a high-pressure reaction kettle, wherein the pressure is 1.0Mpa, the temperature is 115 ℃, and the reaction is carried out for 5 hours under the condition of heat preservation to obtain a reactant iii;

4) adding 8 parts of sodium fluosilicate and 4 parts of 4-methyl benzene sulfinic acid methyl ester into a DMSO solution, heating to 80 ℃, stirring while heating, and carrying out heat preservation reaction for 5 hours to obtain a reactant iv;

5) putting 7 parts of reactant iii and 5 parts of reactant iv into a reactor, adding 11 parts of glass powder, adding an ethanol solution, quickly heating to 60 ℃, and keeping the temperature for reaction for 4 hours to obtain a reactant v;

6) and putting the reactant v into a reactor, adding an ethyl acetate solution, adding silicon dioxide particles, uniformly stirring, and evaporating the solution by rotary evaporation to obtain the catalyst.

The rest is the same as example 1.

Comparative example 31

A dry-mixed self-leveling mortar.

The preparation process of the modified leveling agent comprises the following steps:

1) adding 18 parts of acrylic acid, 28 parts of ethanol and 8 parts of methanol into concentrated sulfuric acid, slowly heating to 95 ℃ at the speed of 4 ℃/min, and reacting for 7 hours in a heat preservation manner to obtain a reactant i;

2) adding 11 parts of tetraethyl ethylene diphosphate and an ethyl acetate solution into the reactant i, heating to 128 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a reactant ii;

3) adding 4 parts of (3,3, 3-trifluoropropyl) dichloromethylsilane to a reactant ii, adding a toluene solution, and putting the mixture into a high-pressure reaction kettle, wherein the pressure is 0.5Mpa, the temperature is 115 ℃, and the reaction is carried out for 5 hours under the condition of heat preservation to obtain a reactant iii;

4) adding 8 parts of sodium fluosilicate and 4 parts of 4-methyl benzene sulfinic acid methyl ester into a DMSO solution, heating to 80 ℃, stirring while heating, and carrying out heat preservation reaction for 5 hours to obtain a reactant iv;

5) putting 7 parts of reactant iii and 5 parts of reactant iv into a reactor, adding 11 parts of glass powder, adding an ethanol solution, quickly heating to 60 ℃, and keeping the temperature for reaction for 4 hours to obtain a reactant v;

6) and putting the reactant v into a reactor, adding an ethyl acetate solution, adding silicon dioxide particles, uniformly stirring, and evaporating the solution by rotary evaporation to obtain the catalyst.

The rest is the same as example 1.

Comparative example 32

A dry-mixed self-leveling mortar.

The preparation process of the modified leveling agent comprises the following steps:

1) adding 18 parts of acrylic acid, 28 parts of ethanol and 8 parts of methanol into concentrated sulfuric acid, slowly heating to 95 ℃ at the speed of 4 ℃/min, and reacting for 7 hours in a heat preservation manner to obtain a reactant i;

2) adding 11 parts of tetraethyl ethylene diphosphate and an ethyl acetate solution into the reactant i, heating to 128 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a reactant ii;

3) adding 4 parts of (3,3, 3-trifluoropropyl) dichloromethylsilane to a reactant ii, adding a toluene solution, and putting the mixture into a high-pressure reaction kettle, wherein the pressure is 1.0Mpa, the temperature is 115 ℃, and the reaction is carried out for 5 hours under the condition of heat preservation to obtain a reactant iii;

4) adding 5 parts of sodium fluosilicate and 4 parts of 4-methyl benzene sulfinic acid methyl ester into a DMSO solution, heating to 80 ℃, stirring while heating, and carrying out heat preservation reaction for 5 hours to obtain a reactant iv;

5) putting 7 parts of reactant iii and 5 parts of reactant iv into a reactor, adding 11 parts of glass powder, adding an ethanol solution, quickly heating to 60 ℃, and keeping the temperature for reaction for 4 hours to obtain a reactant v;

6) and putting the reactant v into a reactor, adding an ethyl acetate solution, adding silicon dioxide particles, uniformly stirring, and evaporating the solution by rotary evaporation to obtain the catalyst.

The rest is the same as example 1.

Comparative example 33

A dry-mixed self-leveling mortar.

The preparation process of the modified leveling agent comprises the following steps:

1) adding 18 parts of acrylic acid, 28 parts of ethanol and 8 parts of methanol into concentrated sulfuric acid, slowly heating to 95 ℃ at the speed of 4 ℃/min, and reacting for 7 hours in a heat preservation manner to obtain a reactant i;

2) adding 11 parts of tetraethyl ethylene diphosphate and an ethyl acetate solution into the reactant i, heating to 128 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a reactant ii;

3) adding 4 parts of (3,3, 3-trifluoropropyl) dichloromethylsilane to a reactant ii, adding a toluene solution, and putting the mixture into a high-pressure reaction kettle, wherein the pressure is 1.0Mpa, the temperature is 115 ℃, and the reaction is carried out for 5 hours under the condition of heat preservation to obtain a reactant iii;

4) adding 8 parts of sodium fluosilicate and 4 parts of 4-methyl benzene sulfinic acid methyl ester into a DMSO solution, heating to 80 ℃, stirring while heating, and carrying out heat preservation reaction for 5 hours to obtain a reactant iv;

5) putting 7 parts of reactant iii and 5 parts of reactant iv into a reactor, adding an ethanol solution, quickly heating to 60 ℃, and keeping the temperature for reaction for 4 hours to obtain a reactant v;

6) and putting the reactant v into a reactor, adding an ethyl acetate solution, adding silicon dioxide particles, uniformly stirring, and evaporating the solution by rotary evaporation to obtain the catalyst.

The rest is the same as example 1.

Comparative example 34

A dry-mixed self-leveling mortar.

The preparation process of the modified leveling agent comprises the following steps:

1) adding 18 parts of acrylic acid, 28 parts of ethanol and 8 parts of methanol into concentrated sulfuric acid, slowly heating to 95 ℃ at the speed of 4 ℃/min, and reacting for 7 hours in a heat preservation manner to obtain a reactant i;

2) adding 11 parts of tetraethyl ethylene diphosphate and an ethyl acetate solution into the reactant i, heating to 128 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 5 hours to obtain a reactant ii;

3) adding 4 parts of (3,3, 3-trifluoropropyl) dichloromethylsilane to a reactant ii, adding a toluene solution, and putting the mixture into a high-pressure reaction kettle, wherein the pressure is 1.0Mpa, the temperature is 115 ℃, and the reaction is carried out for 5 hours under the condition of heat preservation to obtain a reactant iii;

4) adding 8 parts of sodium fluosilicate and 4 parts of 4-methyl benzene sulfinic acid methyl ester into a DMSO solution, heating to 80 ℃, stirring while heating, and carrying out heat preservation reaction for 5 hours to obtain a reactant iv;

5) putting 7 parts of reactant iii and 10 parts of reactant iv into a reactor, adding 11 parts of glass powder, adding an ethanol solution, quickly heating to 60 ℃, and keeping the temperature for reaction for 4 hours to obtain a reactant v;

6) and putting the reactant v into a reactor, adding an ethyl acetate solution, adding silicon dioxide particles, uniformly stirring, and evaporating the solution by rotary evaporation to obtain the catalyst.

The rest is the same as example 1.

Comparative example 35

A dry-mixed self-leveling mortar.

Wherein the leveling agent is an byk333 leveling agent which is commonly sold on the market.

The rest is the same as example 1.

Comparative example 36

The mortar is common dry-mixed self-leveling mortar sold on the market.

Experimental example 1 tensile bond strength of Dry-blended self-leveling mortar

The mortar prepared in the examples and the comparative examples is tested for tensile bonding strength according to the test requirements in building material industry standard JC/T958-2017 cement-based self-leveling mortar for ground, and the specific results are shown in Table 1;

TABLE 1 tensile bond Strength of Dry-mix self-leveling mortar

It can be seen from the data in table 1 that the tensile bond strength of the mortars prepared in examples 1-3 is above 1.89Mpa, far exceeding the bond strength of the ordinary self-levelling mortar of comparative example 36. Comparative examples 1 to 3 change the raw material components in the mortar, so the bonding strength of the mortar is reduced; the component proportion of the machine-made sand in the comparative example 4 is changed, so that the tensile bonding strength of the mortar is only 0.83Mpa, the common glass sand is selected in the comparative example 5, and the glass sand cannot be matched with other components in the mortar, so that the mortar is easy to segregate in the construction process, and the tensile bonding strength of the mortar is reduced. Comparative examples 6 to 9 in the preparation of the modified glass sand, the modification process of the modified glass sand was changed to result in incomplete surface modification of the glass sand, so that the tensile bond strength of the mortar was lower than that of examples 1 to 3. Comparative examples 10-11 changed the composition and ratio of the binding solution in the modification of the glass sand, resulting in the inability of the modifier to effectively bind to the surface of the glass sand, resulting in the inability of the glass sand to work with the other components of the mortar.

Comparative examples 12 to 18 are changes of the surface modifier of the modified glass sand, wherein, the formula proportion of the surface modifier is changed in the comparative examples 12 to 15 and 18, so that the effective component of the surface modifier is changed, the surface modification of the glass sand is incomplete, and the tensile bonding strength of the mortar is reduced; comparative examples 16-17 changed the process parameters of the surface modifier, causing the effective groups of the modifier to fail to perform the desired effect, resulting in a decrease in the overall tensile bond strength of the mortar.

Comparative examples 19 to 26 are related processes and formulas of modified retarders in the mortar are changed, wherein the formulas of the retarders are changed in the comparative examples 19 to 20, the comparative example 22 and the comparative example 26, so that the effective components of the retarders in the mortar are reduced, and the tensile bonding strength of the mortar is influenced; comparative example 21 the step of adding geniposide was changed, so that it could not participate in the reaction effectively, resulting in the change of the structure of retarder molecules; the basalt fiber is not added in the comparative example 23, and the carbon fiber is not added in the comparative example 25, so that the bonding strength of the interface of the mortar and the outside is reduced; comparative example 24 changes the process parameters of the modified retarder, causes the effective components of the retarder to change, and therefore the tensile bond strength of the mortar changes. Comparative example 27 is a conventional retarder, and the tensile bond strength of the mortar was only 0.24Mpa in the presence of the modified glass sand and the modified leveling agent.

Comparative examples 28 to 34 respectively change the formula and parameters of the flow modifier in the mortar, wherein, the formula of the leveling agent is changed in the comparative examples 29 to 30 and the comparative examples 32 to 34, so that the effective components with viscosity in the leveling agent are reduced, and the tensile bonding strength of the mortar is only between 0.76 and 1.06 MPa; comparative examples 28 and 31 change the process of the leveling agent, so that effective groups in the leveling agent cannot be substituted to corresponding positions, and the tensile bonding strength of the mortar is far lower than that of examples 1-3. The conventional leveling agent was selected in comparative example 35, but it was not effectively blended with other components in the mortar, resulting in a tensile bond strength even lower than that of comparative example 36.

Experimental example 2 setting time of Dry-blended self-leveling mortar

The mortar prepared in the examples and the comparative examples is tested for setting time according to the test requirements in national standard GB/T25181-2019 'ready-mixed mortar', and the specific results are shown in Table 2;

TABLE 2 setting time of Dry-mix self-leveling mortar

As can be seen from the data in table 3, the addition of the retarder effectively slows down the setting time of the self-leveling mortar, compared with the ordinary self-leveling mortar in the comparative example 36, the initial setting time of the retarder is effectively prolonged, the workability of the self-leveling mortar is increased, and meanwhile, the components in the mortar can be mutually matched due to the sufficient flowing time, so that the mortar has good working properties; comparative examples 19 to 20, comparative example 22 and comparative example 26 change the formula of the retarder, so that the effective components of the retarder are reduced, and the retarding effect is reduced; comparative example 21 the step of adding geniposide was changed, so that the effective position in the substituent group could not be effectively substituted, resulting in the change of the structure of retarder molecules, so the effect of unable retardation was reduced; comparative example 23 without basalt fiber and comparative example 25 without carbon fiber, which all resulted in a change in the retardation time of the mortar; comparative example 24 the process parameters of the modified retarder were changed, resulting in a reduction of the retarding component in the retarder, so the initial setting time of the mortar was only 69 min. Comparative example 5 is unmodified glass sand, comparative example 27 is a common retarder, comparative example 35 is a common leveling agent, and the setting time of the mortar is only 41-47min under the condition that other components exist in the mortar.

Experimental example 3 flatness and dimensional change rate of dry-mixed self-leveling mortar

The flatness of the ground after the self-leveling mortar is solidified is tested according to the requirement on the flatness of the indoor ground in the national standard GB50209-2016 (construction quality acceptance Standard for construction ground engineering) of building ground, wherein the standard requires that the allowable deviation of the flatness of the surface of plastering of the cement mortar ground is 4 mm; after the self-leveling mortar prepared in the examples and the comparative examples is well maintained, the flatness of the self-leveling mortar is tested, and the specific data results are recorded in table 3;

the mortar prepared in the examples and the comparative examples is tested for the dimensional change rate according to the test requirements in building material industry standard JC/T958-2017 cement-based self-leveling mortar for ground, and the specific results are shown in Table 3;

TABLE 3 flatness and dimensional Change Rate of Dry-blended self-leveling mortar

It can be seen from the data in table 3 that the self-leveling mortars prepared in examples 1 to 3 have excellent flatness with a floor tolerance of only 0.51 to 0.66mm and a dimensional change rate of only 0.01 to 0.02%, which is far superior to the conventional dry-mixed self-leveling mortar of comparative example 36. Comparative example 5 adopts ordinary glass sand, and in the environment that the modified retarder and the modified leveling agent exist in the mortar, the ordinary glass sand cannot be matched with the mortar, so the flatness and the dimensional change rate of the mortar are far higher than those of examples 1 to 3.

Comparative examples 19 to 26 are changes of relevant processes and formulas of the modified retarder in the mortar, wherein the comparative examples 19 to 20, the comparative examples 22 to 23 and the comparative examples 25 to 26 change the formula of the retarder, so that the effective components of the retarder in the mortar are reduced, and the flatness and the size change rate of the mortar are influenced in the presence of the modified leveling agent; comparative examples 21 and 24 change the process of modifying the retarder to cause the change of the retarder structure, so that the deviation of the flatness of the mortar is only 3.58mm which is the lowest and is far higher than that of the examples 1-3. Comparative example 27 is a normal retarder, and the flatness and dimensional change rate of the mortar are even greater than those of comparative example 36 in the presence of the modified glass sand and the modified leveling agent. The comparative examples 28 to 34 respectively change the formula and the parameters of the flow modifier in the mortar, wherein the comparative examples 29 to 30 and the comparative examples 32 to 34 change the formula of the leveling agent, so that the effective components in the leveling agent are reduced, and the flatness deviation of the mortar is between 3.07 and 3.37 mm; comparative examples 28 and 31 change the process of the leveling agent, so that effective groups in the leveling agent cannot be substituted to corresponding positions, and the dimensional change rate of the mortar is higher than that of examples 1-3. The common leveling agent is selected in the comparative example 35, but the leveling agent cannot be effectively matched with other components in the mortar, so that the flatness and the size change rate of the mortar do not meet the national standard and the industrial standard.