阅读说明：本技术 一种持效型建筑用防水堵漏剂 (Lasting waterproof plugging agent for building ) 是由 刘杰 于 2019-10-17 设计创作，主要内容包括：本发明公开了一种持效型建筑用防水堵漏剂,属于建筑材料技术领域。按重量份数计,依次称取：60～80份水玻璃,3～6份速凝剂,20～25份水,4～6份水泥和15～25份改性防水剂；将水玻璃与水混合于搅拌机中,并向搅拌机中加入速凝剂,水泥和改性防水剂,于温度为40～55℃,转速为260～380r/min的条件下,搅拌混合20～60min后,得持效型建筑用防水堵漏剂。本发明所得的持效型建筑用防水堵漏剂具有优异的堵漏效果,且具有较好的粘结强度,有效阻止二次渗漏。(The invention discloses a lasting-effect waterproof plugging agent for a building, and belongs to the technical field of building materials. Weighing the following components in parts by weight: 60-80 parts of water glass, 3-6 parts of an accelerator, 20-25 parts of water, 4-6 parts of cement and 15-25 parts of a modified waterproof agent; mixing water glass and water in a stirrer, adding an accelerator, cement and a modified waterproofing agent into the stirrer, and stirring and mixing for 20-60 min at the temperature of 40-55 ℃ and the rotating speed of 260-380 r/min to obtain the lasting building waterproofing and plugging agent. The lasting-effect building waterproof plugging agent has an excellent plugging effect, has good bonding strength and effectively prevents secondary leakage.)

1. A lasting-effect waterproof plugging agent for buildings is characterized by comprising the following raw materials in parts by weight: 60-80 parts of water glass, 3-6 parts of an accelerator, 20-25 parts of water, 4-6 parts of cement and 15-25 parts of a modified waterproof agent;

the preparation method of the modified waterproof agent comprises the following steps:

mixing epoxy resin and a mixed solvent according to a mass ratio of 1: 10-1: 20, stirring and dissolving to obtain an epoxy resin solution, wherein the epoxy resin solution and the vinyl triethoxysilane are mixed according to a mass ratio of 8: 1-18: 1, mixing, adding an initiator which is 0.05-0.08 times of the mass of the epoxy resin solution, stirring and reacting to obtain a modified epoxy resin solution, and mixing the modified epoxy resin solution and the monomer mixture according to a mass ratio of 5: 1-10: 1, mixing, stirring and reacting to obtain a modified waterproof agent blank, and mixing the modified waterproof agent blank and calcium chloride according to a mass ratio of 8: 1-15: 1, adding triethylene tetramine with the mass of 0.02-0.08 times of that of the modified waterproofing agent blank, stirring and mixing, then adding water with the mass of 0.3-0.4 times of that of the modified waterproofing agent blank, stirring and mixing to obtain the modified waterproofing agent.

2. The durable waterproof plugging agent for the building as claimed in claim 1, wherein: the water glass is water glass with the modulus of 2.7-3.3.

3. The durable waterproof plugging agent for the building as claimed in claim 1, wherein: the accelerating agent is any one of potassium dichromate or copper sulfate.

4. The durable waterproof plugging agent for the building as claimed in claim 1, wherein: the cement is any one of Portland cement or aluminate cement.

5. The durable waterproof plugging agent for the building as claimed in claim 1, wherein: the epoxy resin is bisphenol A type epoxy resin.

6. The durable waterproof plugging agent for the building as claimed in claim 1, wherein: the mixed solvent is prepared by mixing ethylene glycol monobutyl ether and n-butyl alcohol according to a mass ratio of 1: 1-1: 2, mixing to obtain a mixed solvent.

7. The durable waterproof plugging agent for the building as claimed in claim 1, wherein: the initiator is any one of benzoyl peroxide or lauroyl peroxide.

8. The durable waterproof plugging agent for the building as claimed in claim 1, wherein: the monomer mixture is prepared by mixing alpha-methacrylic acid and styrene according to a mass ratio of 1: 3, adding benzoyl peroxide with the mass of 0.1-0.3 time of that of the alpha-methacrylic acid, and stirring and mixing to obtain a monomer mixture.

9. The durable waterproof plugging agent for the building as claimed in claim 1, wherein: modified peanut shell fibers with the mass 0.1-0.2 times that of the modified waterproof agent blank can be added into the modified waterproof agent blank, the modified peanut shell fibers are obtained by crushing and sieving peanut shell fibers, and the refined peanut shell fibers and a sodium hydroxide solution are mixed according to the mass ratio of 1: 10-1: 12, mixing, stirring for reaction, filtering, washing and drying to obtain the modified peanut shell powder.

10. The durable waterproof plugging agent for the building as claimed in claim 1, wherein: modified graphene oxide with the mass 0.10-0.12 times that of the modified waterproofing agent can be added into the modified waterproofing agent, wherein the modified graphene oxide is prepared by mixing nitric acid and sulfuric acid according to the volume ratio of 1: 3, mixing, adding carbon nano tubes with the mass of 0.1-0.4 times that of nitric acid, stirring and reacting to obtain carboxylated carbon nano tubes, and mixing graphene oxide and water according to the mass ratio of 1: 300, adding carbon nano tubes with the mass of 0.3-0.6 times that of the graphene oxide, stirring and mixing to obtain a pretreated graphene oxide dispersion liquid, mixing the pretreated graphene oxide dispersion liquid with triethylene tetramine according to the mass ratio of 300: 1, adding a gluconic acid beta-lactone aqueous solution with the mass of 0.1-0.2 times of that of the pretreated graphene oxide dispersion liquid, adjusting the pH to 8-9, stirring, standing, and freeze-drying to obtain the modified graphene oxide.

Technical Field

The invention discloses a lasting-effect waterproof plugging agent for a building, and belongs to the technical field of building materials.

Background

At present, with the continuous development of construction industry, the building quality also becomes an important topic. After a plurality of traditional buildings are put into use, the phenomenon of water leakage of the wall body can be found quickly, particularly after the impact of heavy rain, the water leakage phenomenon is more serious, and the healthy development of the house and land industry is influenced to a great extent.

The quality of the waterproof engineering is directly related to the service life of the building. In recent years, the incidence of waterproof leakage of roofs of buildings is extremely high, leakage occurs when some buildings are not put into use, and the leakage rate of roofs exceeds more than 50% within the waterproof guarantee service life at present. For the leakage of building construction, usually, the outer prevention of building is partially failed, so that the leakage of the waterproof layer occurs, the water seepage can only enter the interior of the building through the defect of concrete, for example, the water seepage is caused by the fine crack in the concrete, the water seepage at the position with poor impermeability due to the incompact vibration during the concrete construction is very common, most of the conventional waterproof layer designs adopt coiled material waterproof materials, wherein SBS waterproof coiled materials are used, for the waterproof materials, the water penetration phenomenon easily occurs due to the adoption of point-sticking construction, and the finding of the seepage point of the waterproof material is difficult. In order to rapidly and effectively treat the penetration and rapidly repair the concrete defect part in the building, the leakage plugging agent is adopted as a better method for solving the leakage of the building.

The plugging agent is a material which can be quickly solidified and hardened, and can quickly expand to block the crack after being acted with water, so as to achieve the purpose of stopping water; the plugging agent has slightly-expanded hydraulic material, can be used after being mixed with water, can be constructed on a wet surface and also can be used for plugging with water, has special effect, and can be widely used for plugging in buildings, underground, underwater, quicksand tunnels and other projects, stopping water, repairing, filling, and the like of the projects and plugging maintenance. The currently adopted plugging agents are various in types, such as unsaturated polyesters, acrylamides, polyurethanes and the like, the currently used polyurethane grouting materials are mostly used for plugging seepage concrete, although the plugging agent can stop water rapidly and meet the requirement of leakage control, the technology also has obvious defects:

(1) for the concrete surface leakage caused by the untight vibration of the concrete, the grouting mode has no effect, and because obvious cracks cannot be found in the grouting process, a grouting channel cannot be formed;

(2) the cracks after grouting may be further enlarged due to factors such as foundation settlement, and secondary leakage may be caused. Researchers invented a high-efficiency waterproof plugging agent which is prepared from the following raw materials in parts by weight: 30-50 parts of calcium sulphoaluminate, 25-35 parts of sepiolite, 10-20 parts of lithium chloride, 15-25 parts of talcum powder, 5-10 parts of polyacrylamide, 6-12 parts of coconut peel, 6-10 parts of shell, 2-6 parts of polytetrafluoroethylene and 7-15 parts of sodium tripolyphosphate. The high-efficiency waterproof plugging agent can rapidly plug cracks, has the advantages of obvious waterproof plugging effect, high strength, strong staying property in a leaking layer, high pressure bearing capacity in a plugging layer in a short time and good fluidity. However, the traditional plugging agent is easy to cause secondary leakage, and the plugging effect cannot be further improved, so that for the leakage problem, the development of a safe and durable plugging agent is urgently needed to ensure the safety of buildings.

Disclosure of Invention

The invention mainly solves the technical problems that: aiming at the problems that the traditional plugging agent is easy to generate secondary leakage and the plugging effect cannot be further improved, the durable waterproof plugging agent for the building is provided.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a lasting-effect waterproof plugging agent for buildings is composed of the following raw materials in parts by weight: 60-80 parts of water glass, 3-6 parts of an accelerator, 20-25 parts of water, 4-6 parts of cement and 15-25 parts of a modified waterproof agent;

the preparation method of the modified waterproof agent comprises the following steps:

mixing epoxy resin and a mixed solvent according to a mass ratio of 1: 10-1: 20, stirring and dissolving to obtain an epoxy resin solution, wherein the epoxy resin solution and the vinyl triethoxysilane are mixed according to a mass ratio of 8: 1-18: 1, mixing, adding an initiator which is 0.05-0.08 times of the mass of the epoxy resin solution, stirring and reacting to obtain a modified epoxy resin solution, and mixing the modified epoxy resin solution and the monomer mixture according to a mass ratio of 5: 1-10: 1, mixing, stirring and reacting to obtain a modified waterproof agent blank, and mixing the modified waterproof agent blank and calcium chloride according to a mass ratio of 8: 1-15: 1, adding triethylene tetramine with the mass of 0.02-0.08 times of that of the modified waterproofing agent blank, stirring and mixing, then adding water with the mass of 0.3-0.4 times of that of the modified waterproofing agent blank, stirring and mixing to obtain the modified waterproofing agent.

The water glass is water glass with the modulus of 2.7-3.3.

The accelerating agent is any one of potassium dichromate or copper sulfate.

The cement is any one of Portland cement or aluminate cement.

The epoxy resin is bisphenol A type epoxy resin.

The mixed solvent is prepared by mixing ethylene glycol monobutyl ether and n-butyl alcohol according to a mass ratio of 1: 1-1: 2, mixing to obtain a mixed solvent.

The initiator is any one of benzoyl peroxide or lauroyl peroxide.

The monomer mixture is prepared by mixing alpha-methacrylic acid and styrene according to a mass ratio of 1: 3, adding benzoyl peroxide with the mass of 0.1-0.3 time of that of the alpha-methacrylic acid, and stirring and mixing to obtain a monomer mixture.

Modified peanut shell fibers with the mass 0.1-0.2 times that of the modified waterproof agent blank can be added into the modified waterproof agent blank, the modified peanut shell fibers are obtained by crushing and sieving peanut shell fibers, and the refined peanut shell fibers and a sodium hydroxide solution are mixed according to the mass ratio of 1: 10-1: 12, mixing, stirring for reaction, filtering, washing and drying to obtain the modified peanut shell powder.

Modified graphene oxide with the mass 0.10-0.12 times that of the modified waterproofing agent can be added into the modified waterproofing agent, wherein the modified graphene oxide is prepared by mixing nitric acid and sulfuric acid according to the volume ratio of 1: 3, mixing, adding carbon nano tubes with the mass of 0.1-0.4 times that of nitric acid, stirring and reacting to obtain carboxylated carbon nano tubes, and mixing graphene oxide and water according to the mass ratio of 1: 300, adding carbon nano tubes with the mass of 0.3-0.6 times that of the graphene oxide, stirring and mixing to obtain a pretreated graphene oxide dispersion liquid, mixing the pretreated graphene oxide dispersion liquid with triethylene tetramine according to the mass ratio of 300: 1, adding a gluconic acid beta-lactone aqueous solution with the mass of 0.1-0.2 times of that of the pretreated graphene oxide dispersion liquid, adjusting the pH to 8-9, stirring, standing, and freeze-drying to obtain the modified graphene oxide.

The invention has the beneficial effects that:

(1) the invention adds self-made modified waterproof additive when preparing the lasting building waterproof plugging agent, firstly, the modified waterproof agent contains epoxy resin, after being added into the product, the epoxy resin can be cured with the water content in the system when the water glass is cured, thereby forming cross-linking in the system, further improving the bonding strength of the product, preventing secondary leakage, simultaneously improving the plugging performance of the product, secondly, the epoxy resin in the modified waterproof agent can have better dispersibility in aqueous solution after being modified, thereby being uniformly distributed in the product after being added into the product, further improving the plugging performance of the product after being cured, furthermore, because the epoxy resin in the modified waterproof agent is added with calcium chloride during the modification process, salt can be formed with the modified epoxy resin, after the plugging agent is added into a product, hydrophilic sodium ions in water glass can be replaced, so that the plugging performance of the product is further improved;

(2) the cement is added when the durable waterproof plugging agent for the building is prepared, on one hand, the cement can be used as a curing agent of the water glass after being added into a product to promote the curing of the water glass and improve the bonding property of the product, and on the other hand, the heat generated during the curing of the cement can promote the curing of the epoxy resin, so that the plugging property of the product is further improved;

(3) according to the invention, the modified peanut shell fiber and the modified graphene oxide can be added when the durable building waterproof plugging agent is prepared, the modified peanut shell fiber is added to adsorb calcium ions, so that loss of the calcium ions in the use process of the product is prevented, a condition is provided for subsequently replacing hydrophilic sodium ions in water glass, and further firmer combination is formed, so that the waterproof plugging effect of the product is improved, the added modified graphene oxide is of a porous structure and has carbon dioxide adsorption performance after modification, carbon dioxide can be released in the use process of the product, and redundant calcium ions form calcium carbonate precipitates, so that the waterproof performance of the product is improved.

Detailed Description

Mixing alpha-methacrylic acid and styrene according to a mass ratio of 1: 3, mixing the mixture in a beaker, adding benzoyl peroxide with the mass of 0.1-0.3 time of that of the alpha-methacrylic acid into the beaker, and stirring and mixing the mixture for 15-20 min at the temperature of 30-35 ℃ and the rotating speed of 250-320 r/min to obtain a monomer mixture; mixing epoxy resin and a mixed solvent according to a mass ratio of 1: 10-1: 20, stirring and dissolving for 30-60 min at the temperature of 110-115 ℃ and the rotating speed of 300-350 r/min to obtain an epoxy resin solution, wherein the epoxy resin solution and the vinyl triethoxysilane are mixed according to the mass ratio of 8: 1-18: 1, mixing the mixture in a three-neck flask, adding an initiator which is 0.05-0.08 times the mass of an epoxy resin solution into the three-neck flask, stirring and reacting for 1-2 hours at the temperature of 80-100 ℃ and the rotating speed of 280-350 r/min to obtain a modified epoxy resin solution, and mixing the modified epoxy resin solution and a monomer mixture according to the mass ratio of 5: 1-10: 1, mixing, controlling the adding speed of a monomer mixture to be 5-10 mL/min, stirring and reacting for 1-2 h under the conditions that the temperature is 80-90 ℃ and the rotating speed is 250-320 r/min to obtain a modified waterproof agent blank, and mixing the modified waterproof agent blank and calcium chloride according to the mass ratio of 8: 1-15: 1, mixing the materials in a flask, adding triethylene tetramine with the mass 0.02-0.08 time that of a modified waterproof agent blank into the flask, stirring and mixing for 40-90 min at the temperature of 60-65 ℃ and the rotating speed of 300-360 r/min, then adding water with the mass 0.3-0.4 time that of the modified waterproof agent blank into the flask, and stirring and mixing for 20-40 min at the temperature of 40-60 ℃ and the rotating speed of 260-320 r/min to obtain a modified waterproof agent; weighing the following components in parts by weight: 60-80 parts of water glass, 3-6 parts of an accelerator, 20-25 parts of water, 4-6 parts of cement and 15-25 parts of a modified waterproof agent; mixing water glass and water in a stirrer, adding an accelerator, cement and a modified waterproofing agent into the stirrer, and stirring and mixing for 20-60 min at the temperature of 40-55 ℃ and the rotating speed of 260-380 r/min to obtain the lasting-effect type lasting-effect building waterproofing and leaking stoppage agent. The water glass is water glass with the modulus of 2.7-3.3. The accelerating agent is any one of potassium dichromate or copper sulfate. The cement is any one of Portland cement or aluminate cement. The epoxy resin is bisphenol A type epoxy resin. The mixed solvent is prepared by mixing ethylene glycol monobutyl ether and n-butyl alcohol according to a mass ratio of 1: 1-1: 2, mixing to obtain a mixed solvent. The initiator is any one of benzoyl peroxide or lauroyl peroxide. Modified peanut shell fibers with the mass 0.1-0.2 times that of the modified waterproof agent blank can be added into the modified waterproof agent blank, the modified peanut shell fibers are obtained by crushing and sieving peanut shell fibers, and the refined peanut shell fibers and a sodium hydroxide solution are mixed according to the mass ratio of 1: 10-1: 12, mixing, stirring for reaction, filtering, washing and drying to obtain the modified peanut shell powder. Modified graphene oxide with the mass 0.10-0.12 times that of the modified waterproofing agent can be added into the modified waterproofing agent, wherein the modified graphene oxide is prepared by mixing nitric acid and sulfuric acid according to the volume ratio of 1: 3, mixing, adding carbon nano tubes with the mass of 0.1-0.4 times that of nitric acid, stirring and reacting to obtain carboxylated carbon nano tubes, and mixing graphene oxide and water according to the mass ratio of 1: 300, adding carbon nano tubes with the mass of 0.3-0.6 times that of the graphene oxide, stirring and mixing to obtain a pretreated graphene oxide dispersion liquid, mixing the pretreated graphene oxide dispersion liquid with triethylene tetramine according to the mass ratio of 300: 1, adding a gluconic acid beta-lactone aqueous solution with the mass of 0.1-0.2 times of that of the pretreated graphene oxide dispersion liquid, adjusting the pH to 8-9, stirring, standing, and freeze-drying to obtain the modified graphene oxide.

Mixing alpha-methacrylic acid and styrene according to a mass ratio of 1: 3, mixing the mixture in a beaker, adding benzoyl peroxide with the mass of 0.3 time of that of the alpha-methacrylic acid into the beaker, and stirring and mixing the mixture for 20min under the conditions that the temperature is 35 ℃ and the rotating speed is 320r/min to obtain a monomer mixture; mixing epoxy resin and a mixed solvent according to a mass ratio of 1: 20, stirring and dissolving for 60min at the temperature of 115 ℃ and the rotating speed of 350r/min to obtain an epoxy resin solution, and mixing the epoxy resin solution and the vinyl triethoxysilane according to the mass ratio of 18: 1, adding an initiator which is 0.08 times of the mass of the epoxy resin solution into the three-neck flask, stirring and reacting for 2 hours at the temperature of 100 ℃ and the rotating speed of 350r/min to obtain a modified epoxy resin solution, and mixing the modified epoxy resin solution and a monomer mixture according to the mass ratio of 10: 1, mixing, controlling the adding speed of a monomer mixture to be 10mL/min, stirring and reacting for 2 hours at the temperature of 90 ℃ and the rotating speed of 320r/min to obtain a modified waterproof agent blank, and mixing the modified waterproof agent blank and calcium chloride according to the mass ratio of 15: 1, mixing the materials in a flask, adding triethylene tetramine with the mass 0.08 time that of a modified waterproof agent blank into the flask, stirring and mixing the materials for 90 minutes at the temperature of 65 ℃ and the rotating speed of 360r/min, adding water with the mass 0.4 time that of the modified waterproof agent blank into the flask, and stirring and mixing the materials for 40 minutes at the temperature of 60 ℃ and the rotating speed of 320r/min to obtain a modified waterproof agent; weighing the following components in parts by weight: 80 parts of water glass, 6 parts of an accelerator, 25 parts of water, 6 parts of cement and 25 parts of a modified waterproof agent; mixing water glass and water in a stirrer, adding an accelerator, cement and a modified waterproofing agent into the stirrer, and stirring and mixing for 60min at the temperature of 55 ℃ and the rotating speed of 380r/min to obtain the lasting-effect type lasting-effect building waterproofing and plugging agent. The water glass is water glass with a modulus of 3.3. The accelerating agent is potassium dichromate. The cement is portland cement. The epoxy resin is bisphenol A type epoxy resin. The mixed solvent is prepared by mixing ethylene glycol monobutyl ether and n-butyl alcohol according to a mass ratio of 1: 2, mixing to obtain a mixed solvent. The initiator is benzoyl peroxide. Modified peanut shell fibers with the mass 0.2 time that of the modified waterproof agent blank can be added into the modified waterproof agent blank, the modified peanut shell fibers are obtained by crushing and sieving the peanut shell fibers, and the refined peanut shell fibers and a sodium hydroxide solution are mixed according to the mass ratio of 1: 12, mixing, stirring for reaction, filtering, washing and drying to obtain the modified peanut shell powder. Modified graphene oxide with the mass 0.12 times that of the modified waterproofing agent can be added into the modified waterproofing agent, wherein the modified graphene oxide is prepared by mixing nitric acid and sulfuric acid according to the volume ratio of 1: 3, mixing, adding carbon nano tubes with the mass of 0.4 time that of nitric acid, stirring and reacting to obtain carboxylated carbon nano tubes, and mixing the graphene oxide and water according to the mass ratio of 1: 300, adding carbon nano tubes with the mass of 0.6 time that of the graphene oxide, stirring and mixing to obtain a pretreated graphene oxide dispersion liquid, and mixing the pretreated graphene oxide dispersion liquid with triethylene tetramine according to the mass ratio of 300: 1, adding a gluconic acid beta-lactone aqueous solution with the mass 0.2 time that of the pretreated graphene oxide dispersion liquid, adjusting the pH to 8, stirring, standing, and freeze-drying to obtain the modified graphene oxide.

Mixing epoxy resin and a mixed solvent according to a mass ratio of 1: 20, stirring and dissolving for 60min at the temperature of 115 ℃ and the rotating speed of 350r/min to obtain an epoxy resin solution, and mixing the epoxy resin solution and the vinyl triethoxysilane according to the mass ratio of 18: 1, mixing the mixture in a three-neck flask, adding an initiator which is 0.08 times of the mass of an epoxy resin solution into the three-neck flask, stirring and reacting for 2 hours at the temperature of 100 ℃ and the rotating speed of 350r/min to obtain a modified epoxy resin solution, namely a modified waterproof agent blank, mixing the modified waterproof agent blank and calcium chloride according to the mass ratio of 15: 1, mixing the materials in a flask, adding triethylene tetramine with the mass 0.08 time that of a modified waterproof agent blank into the flask, stirring and mixing the materials for 90 minutes at the temperature of 65 ℃ and the rotating speed of 360r/min, adding water with the mass 0.4 time that of the modified waterproof agent blank into the flask, and stirring and mixing the materials for 40 minutes at the temperature of 60 ℃ and the rotating speed of 320r/min to obtain a modified waterproof agent; weighing the following components in parts by weight: 80 parts of water glass, 6 parts of an accelerator, 25 parts of water, 6 parts of cement and 25 parts of a modified waterproof agent; mixing water glass and water in a stirrer, adding an accelerator, cement and a modified waterproofing agent into the stirrer, and stirring and mixing for 60min at the temperature of 55 ℃ and the rotating speed of 380r/min to obtain the lasting-effect type lasting-effect building waterproofing and plugging agent. The water glass is water glass with a modulus of 3.3. The accelerating agent is potassium dichromate. The cement is portland cement. The epoxy resin is bisphenol A type epoxy resin. The mixed solvent is prepared by mixing ethylene glycol monobutyl ether and n-butyl alcohol according to a mass ratio of 1: 2, mixing to obtain a mixed solvent. The initiator is benzoyl peroxide. Modified peanut shell fibers with the mass 0.2 time that of the modified waterproof agent blank can be added into the modified waterproof agent blank, the modified peanut shell fibers are obtained by crushing and sieving the peanut shell fibers, and the refined peanut shell fibers and a sodium hydroxide solution are mixed according to the mass ratio of 1: 12, mixing, stirring for reaction, filtering, washing and drying to obtain the modified peanut shell powder. Modified graphene oxide with the mass 0.12 times that of the modified waterproofing agent can be added into the modified waterproofing agent, wherein the modified graphene oxide is prepared by mixing nitric acid and sulfuric acid according to the volume ratio of 1: 3, mixing, adding carbon nano tubes with the mass of 0.4 time that of nitric acid, stirring and reacting to obtain carboxylated carbon nano tubes, and mixing the graphene oxide and water according to the mass ratio of 1: 300, adding carbon nano tubes with the mass of 0.6 time that of the graphene oxide, stirring and mixing to obtain a pretreated graphene oxide dispersion liquid, and mixing the pretreated graphene oxide dispersion liquid with triethylene tetramine according to the mass ratio of 300: 1, adding a gluconic acid beta-lactone aqueous solution with the mass 0.2 time that of the pretreated graphene oxide dispersion liquid, adjusting the pH to 8, stirring, standing, and freeze-drying to obtain the modified graphene oxide.

Mixing alpha-methacrylic acid and styrene according to a mass ratio of 1: 3, mixing the mixture in a beaker, adding benzoyl peroxide with the mass of 0.3 time of that of the alpha-methacrylic acid into the beaker, and stirring and mixing the mixture for 20min under the conditions that the temperature is 35 ℃ and the rotating speed is 320r/min to obtain a monomer mixture; mixing epoxy resin and a mixed solvent according to a mass ratio of 1: 20, mixing, stirring and dissolving for 60min under the conditions that the temperature is 115 ℃ and the rotating speed is 350r/min to obtain an epoxy resin solution; mixing an epoxy resin solution and a monomer mixture according to a mass ratio of 10: 1, mixing, controlling the adding speed of a monomer mixture to be 10mL/min, stirring and reacting for 2 hours at the temperature of 90 ℃ and the rotating speed of 320r/min to obtain a modified waterproof agent blank, and mixing the modified waterproof agent blank and calcium chloride according to the mass ratio of 15: 1, mixing the materials in a flask, adding triethylene tetramine with the mass 0.08 time that of a modified waterproof agent blank into the flask, stirring and mixing the materials for 90 minutes at the temperature of 65 ℃ and the rotating speed of 360r/min, adding water with the mass 0.4 time that of the modified waterproof agent blank into the flask, and stirring and mixing the materials for 40 minutes at the temperature of 60 ℃ and the rotating speed of 320r/min to obtain a modified waterproof agent; weighing the following components in parts by weight: 80 parts of water glass, 6 parts of an accelerator, 25 parts of water, 6 parts of cement and 25 parts of a modified waterproof agent; mixing water glass and water in a stirrer, adding an accelerator, cement and a modified waterproofing agent into the stirrer, and stirring and mixing for 60min at the temperature of 55 ℃ and the rotating speed of 380r/min to obtain the lasting-effect type lasting-effect building waterproofing and plugging agent. The water glass is water glass with a modulus of 3.3. The accelerating agent is potassium dichromate. The cement is portland cement. The epoxy resin is bisphenol A type epoxy resin. The mixed solvent is prepared by mixing ethylene glycol monobutyl ether and n-butyl alcohol according to a mass ratio of 1: 2, mixing to obtain a mixed solvent. Modified peanut shell fibers with the mass 0.2 time that of the modified waterproof agent blank can be added into the modified waterproof agent blank, the modified peanut shell fibers are obtained by crushing and sieving the peanut shell fibers, and the refined peanut shell fibers and a sodium hydroxide solution are mixed according to the mass ratio of 1: 12, mixing, stirring for reaction, filtering, washing and drying to obtain the modified peanut shell powder. Modified graphene oxide with the mass 0.12 times that of the modified waterproofing agent can be added into the modified waterproofing agent, wherein the modified graphene oxide is prepared by mixing nitric acid and sulfuric acid according to the volume ratio of 1: 3, mixing, adding carbon nano tubes with the mass of 0.4 time that of nitric acid, stirring and reacting to obtain carboxylated carbon nano tubes, and mixing the graphene oxide and water according to the mass ratio of 1: 300, adding carbon nano tubes with the mass of 0.6 time that of the graphene oxide, stirring and mixing to obtain a pretreated graphene oxide dispersion liquid, and mixing the pretreated graphene oxide dispersion liquid with triethylene tetramine according to the mass ratio of 300: 1, adding a gluconic acid beta-lactone aqueous solution with the mass 0.2 time that of the pretreated graphene oxide dispersion liquid, adjusting the pH to 8, stirring, standing, and freeze-drying to obtain the modified graphene oxide.

Mixing alpha-methacrylic acid and styrene according to a mass ratio of 1: 3, mixing the mixture in a beaker, adding benzoyl peroxide with the mass of 0.3 time of that of the alpha-methacrylic acid into the beaker, and stirring and mixing the mixture for 20min under the conditions that the temperature is 35 ℃ and the rotating speed is 320r/min to obtain a monomer mixture; mixing epoxy resin and a mixed solvent according to a mass ratio of 1: 20, stirring and dissolving for 60min at the temperature of 115 ℃ and the rotating speed of 350r/min to obtain an epoxy resin solution, and mixing the epoxy resin solution and the vinyl triethoxysilane according to the mass ratio of 18: 1, adding an initiator which is 0.08 times of the mass of the epoxy resin solution into the three-neck flask, stirring and reacting for 2 hours at the temperature of 100 ℃ and the rotating speed of 350r/min to obtain a modified epoxy resin solution, and mixing the modified epoxy resin solution and a monomer mixture according to the mass ratio of 10: 1, mixing, controlling the adding speed of a monomer mixture to be 10mL/min, stirring and reacting for 2 hours at the temperature of 90 ℃ and the rotating speed of 320r/min to obtain a modified waterproof agent blank, and mixing the modified waterproof agent blank and triethylene tetramine according to the mass ratio of 20: 2, mixing the mixture in a flask, stirring and mixing the mixture for 90min at the temperature of 65 ℃ and the rotating speed of 360r/min, adding water with the mass of 0.4 time of that of the modified waterproof agent blank into the flask, and stirring and mixing the mixture for 40min at the temperature of 60 ℃ and the rotating speed of 320r/min to obtain the modified waterproof agent; weighing the following components in parts by weight: 80 parts of water glass, 6 parts of an accelerator, 25 parts of water, 6 parts of cement and 25 parts of a modified waterproof agent; mixing water glass and water in a stirrer, adding an accelerator, cement and a modified waterproofing agent into the stirrer, and stirring and mixing for 60min at the temperature of 55 ℃ and the rotating speed of 380r/min to obtain the lasting-effect type lasting-effect building waterproofing and plugging agent. The water glass is water glass with a modulus of 3.3. The accelerating agent is potassium dichromate. The cement is portland cement. The epoxy resin is bisphenol A type epoxy resin. The mixed solvent is prepared by mixing ethylene glycol monobutyl ether and n-butyl alcohol according to a mass ratio of 1: 2, mixing to obtain a mixed solvent. The initiator is benzoyl peroxide. Modified peanut shell fibers with the mass 0.2 time that of the modified waterproof agent blank can be added into the modified waterproof agent blank, the modified peanut shell fibers are obtained by crushing and sieving the peanut shell fibers, and the refined peanut shell fibers and a sodium hydroxide solution are mixed according to the mass ratio of 1: 12, mixing, stirring for reaction, filtering, washing and drying to obtain the modified peanut shell powder. Modified graphene oxide with the mass 0.12 times that of the modified waterproofing agent can be added into the modified waterproofing agent, wherein the modified graphene oxide is prepared by mixing nitric acid and sulfuric acid according to the volume ratio of 1: 3, mixing, adding carbon nano tubes with the mass of 0.4 time that of nitric acid, stirring and reacting to obtain carboxylated carbon nano tubes, and mixing the graphene oxide and water according to the mass ratio of 1: 300, adding carbon nano tubes with the mass of 0.6 time that of the graphene oxide, stirring and mixing to obtain a pretreated graphene oxide dispersion liquid, and mixing the pretreated graphene oxide dispersion liquid with triethylene tetramine according to the mass ratio of 300: 1, adding a gluconic acid beta-lactone aqueous solution with the mass 0.2 time that of the pretreated graphene oxide dispersion liquid, adjusting the pH to 8, stirring, standing, and freeze-drying to obtain the modified graphene oxide.

Comparative example: mixing epoxy resin and a mixed solvent according to a mass ratio of 1: 20, stirring and dissolving for 60min at the temperature of 115 ℃ and the rotating speed of 350r/min to obtain an epoxy resin solution, and mixing the epoxy resin solution and triethylene tetramine according to the mass ratio of 25: 1, stirring and mixing for 90min at the temperature of 65 ℃ and the rotating speed of 360r/min, adding water with the mass being 0.4 time that of the epoxy resin solution into a flask, and stirring and mixing for 40min at the temperature of 60 ℃ and the rotating speed of 320r/min to obtain the modified waterproof agent; weighing the following components in parts by weight: 80 parts of water glass, 6 parts of an accelerator, 25 parts of water, 6 parts of cement and 25 parts of a modified waterproof agent; mixing water glass and water in a stirrer, adding an accelerator, cement and a modified waterproofing agent into the stirrer, and stirring and mixing for 60min at the temperature of 55 ℃ and the rotating speed of 380r/min to obtain the lasting-effect type lasting-effect building waterproofing and plugging agent. The water glass is water glass with a modulus of 3.3. The accelerating agent is potassium dichromate. The cement is portland cement. The epoxy resin is bisphenol A type epoxy resin. The mixed solvent is prepared by mixing ethylene glycol monobutyl ether and n-butyl alcohol according to a mass ratio of 1: 2, mixing to obtain a mixed solvent. Modified peanut shell fibers with the mass 0.2 time that of the epoxy resin solution can be added into the epoxy resin solution, the modified peanut shell fibers are obtained by crushing and sieving peanut shell fibers, and the refined peanut shell fibers are mixed with a sodium hydroxide solution according to the mass ratio of 1: 12, mixing, stirring for reaction, filtering, washing and drying to obtain the modified peanut shell powder. Modified graphene oxide with the mass 0.12 times that of the modified waterproofing agent can be added into the modified waterproofing agent, wherein the modified graphene oxide is prepared by mixing nitric acid and sulfuric acid according to the volume ratio of 1: 3, mixing, adding carbon nano tubes with the mass of 0.4 time that of nitric acid, stirring and reacting to obtain carboxylated carbon nano tubes, and mixing the graphene oxide and water according to the mass ratio of 1: 300, adding carbon nano tubes with the mass of 0.6 time that of the graphene oxide, stirring and mixing to obtain a pretreated graphene oxide dispersion liquid, and mixing the pretreated graphene oxide dispersion liquid with triethylene tetramine according to the mass ratio of 300: 1, adding a gluconic acid beta-lactone aqueous solution with the mass 0.2 time that of the pretreated graphene oxide dispersion liquid, adjusting the pH to 8, stirring, standing, and freeze-drying to obtain the modified graphene oxide.

The performance of the lasting effect type waterproof plugging agent for buildings and the comparative product obtained in the examples 1 to 4 is detected, and the specific detection method is as follows:

1. the loss rate: the lasting effect type water-proof plugging agent for buildings and the comparative example products obtained in the examples 1 to 4 are added at 5g/cm³The coating amount of the liquid is coated in a glass cup with cracks, and the leakage rate is tested;

2. bonding strength: the lasting effect type waterproof plugging agent for buildings and the comparative example products obtained in the examples 1 to 4 are added at 2g/cm³The coating amount of (2) is coated between two cement samples of 10cm × 5cm × 2cm, after curing, the bonding strength is measured, and after the measured samples are immersed in water for 24 hours, the bonding strength is measured again.

Specific detection results are shown in table 1:

table 1: leakage rate and adhesive strength performance detection table

Detecting content	Example 1	Example 2	Example 3	Example 4	Comparative example
						Loss rate/%	0	0.5	1.2	1.8	3.6
Adhesive strength/MPa	5.5	5.0	4.8	4.2	3.6
						Bond Strength/MPa after 24h	5.1	4.3	4.0	3.5	2.0

The detection results in table 1 show that the lasting effect type building waterproof plugging agent obtained by the invention has excellent plugging effect, good bonding strength and effective prevention of secondary leakage.