阅读说明：本技术 防复合岩片翘起的水性仿花岗岩涂料及其制备方法 (Water-based granite-like coating capable of preventing composite rock slices from warping and preparation method thereof ) 是由 马安荣 池钟慷 黄东辉 林丹 于 2020-05-18 设计创作，主要内容包括：本发明涉及一种防复合岩片翘起的水性仿花岗岩涂料,所述的涂料的原料配方按质量百分比的组分包括：丙烯酸酯共聚乳液13.50～18.45％、羟乙基纤维素1.80～2.12％、有机胺中和剂0.03～0.06％、消泡剂0.02～0.03％、防冻剂0.30～0.60％、成膜助剂0.51～0.65％、杀菌剂0.10～0.20％、增稠剂2.20～3.20％、40-80目天然彩砂55.50～63.50％、80-120目天然彩砂1.50～4.50％、复合岩片5.00～12.00％、软片剂0.20～0.40％、外加型防结块剂0.40～0.80％和去离子水6.40～8.10％。(The invention relates to a water-based granite imitation coating for preventing a composite rock slice from warping, which comprises the following components in percentage by mass: 13.50-18.45% of acrylate copolymer emulsion, 1.80-2.12% of hydroxyethyl cellulose, 0.03-0.06% of organic amine neutralizer, 0.02-0.03% of defoaming agent, 0.30-0.60% of antifreezing agent, 0.51-0.65% of film-forming assistant, 0.10-0.20% of bactericide, 2.20-3.20% of thickening agent, 55.50-63.50% of 40-80 mesh natural colored sand, 1.50-4.50% of 80-120 mesh natural colored sand, 5.00-12.00% of composite rock slice, 0.20-0.40% of soft slice agent, 0.40-0.80% of additional anti-caking agent and 6.40-8.10% of deionized water.)

1. The water-based granite imitation coating for preventing the composite rock slice from warping is characterized in that the coating comprises the following raw materials in percentage by mass:

13.50-18.45% of acrylate copolymer emulsion, 1.80-2.12% of hydroxyethyl cellulose, 0.03-0.06% of organic amine neutralizer, 0.02-0.03% of defoaming agent, 0.30-0.60% of antifreezing agent, 0.51-0.65% of film-forming assistant, 0.10-0.20% of bactericide, 2.20-3.20% of thickening agent, 55.50-63.50% of 40-80 mesh natural colored sand, 1.50-4.50% of 80-120 mesh natural colored sand, 5.00-12.00% of composite rock slice, 0.20-0.40% of soft slice agent, 0.40-0.80% of additional anti-caking agent and 6.40-8.10% of deionized water.

2. The aqueous artificial granite coating for preventing the composite rock slice from warping as claimed in claim 1, wherein the defoaming agent is a polysiloxane-polyether copolymer defoaming agent;

the antifreezing agent is propylene glycol and/or ethylene glycol;

the film-forming assistant is dodecyl alcohol ester.

3. The aqueous granite imitation coating for preventing the composite rock slice from warping as claimed in claim 1, wherein the softening agent is selected from SFA-004 produced by Kaiser Tech Limited liability company.

4. The aqueous granite imitation coating for preventing composite rock lifting as claimed in claim 1, wherein the external anti-caking agent is selected from FB-02A produced by Weihai cloud chemical development institute.

5. The preparation method of the water-based granite imitation coating for preventing the composite rock slice from warping as claimed in any one of claims 1 to 4, characterized by comprising the following steps:

(1) selecting a composite rock slice according to the decorative effect of a preset granite decorative coating;

(2) pre-dissolving the composite rock slices and the film-forming additive to obtain a pre-dissolved substance A;

adding the soft tablet agent into the film forming additive, and stirring at a high speed of 1200-1500 rpm for 15-20 minutes until the appearance of the soft tablet agent is light yellow transparent viscous liquid and the fineness of the soft tablet agent is less than or equal to 60 mu m to obtain a pre-dissolved substance B;

stirring hydroxyethyl cellulose, deionized water, an organic amine neutralizer and a defoaming agent at a high speed of 1200-1500 rpm for 15-20 minutes to obtain a mixed solution C;

(3) stirring the mixed solution C, deionized water and a defoaming agent at a high speed of 1200-1500 rpm for 15-20 minutes under a stirring state to obtain a mixed solution D;

(4) stirring at medium speed of 800-1100 rpm for 5-15 minutes to obtain a mixture E in a stirring state, wherein the defoaming agent, the bactericide, the acrylate copolymer emulsion, the antifreezing agent, the thickening agent, the deionized water and the external anti-caking agent are added into the mixed dissolved substance D;

(5) under the stirring state, sequentially adding 40-80 mesh natural colored sand and 80-120 mesh natural colored sand into the mixture E, and stirring at a low speed of 500-700 revolutions per minute for 5-15 minutes to obtain a mixture F;

(6) and adding the pre-dissolved matter A and the pre-dissolved matter B into the mixture F under the stirring state, and stirring at a low speed of 500-700 revolutions per minute for 5-15 minutes to obtain the water-based granite imitation coating for preventing the composite rock fragments.

6. The method for preparing the water-based granite imitation coating for preventing the composite rock slices from warping as claimed in claim 1, wherein in the step (2) of preparing the pre-dissolved matter B, the pre-dissolved matter B is stirred at a high speed and then is detected to be dissolved, the fineness is less than or equal to 60 μm, and if the fineness is not reached, the stirring operation is repeated after standing until the fineness is less than or equal to 60 μm.

Technical Field

The invention relates to a coating, in particular to a water-based granite imitation coating for preventing a composite rock slice from warping and a preparation method thereof.

Background

Granite is one of natural stones, has compact structure, high compressive strength, low water absorption, large surface hardness, good chemical stability, strong durability and small relative change of color, and is suitable for large-area use. Can be processed in various ways, and the granite is not easy to be weathered, so the granite is widely applied to building decoration.

With the widespread concern of the society on environmental pollution in the exploitation of natural stones, the environmental protection call is higher and higher, meanwhile, potential safety hazards exist in the process of using natural stones such as granite and the like to decorate existing buildings, and related local regulations limit or prohibit the use of natural stones for high-rise building decoration.

With the praise of granite architectural decoration effect for architectural decoration designers all the time, in the field of architectural coatings, the granite imitation coating of the water-based composite rock slice gradually enters the visual field of the architectural decoration designers and is gradually applied.

The composite rock slice is made up by using synthetic resin emulsion as main binder, adding various rock powders and pigments and fillers, and adopting a series of processes of mixing, stirring, rolling and drying, and has the different colours and shapes. The coating is added into a building coating, and the building coating with the granite imitation effect is formed on the surface of a building through construction processes such as spraying and the like.

In order to improve the decorative effect of the water-based granite imitation coating, adding composite rock slices is a common practice in the industry. With the advancement of technology, composite rock slices have been able to meet the requirements of relevant standards. However, in the practical application process, the collocation of various composite sizes and colors has great influence on the construction, decoration effect and the like of the final coating. The water-based granite imitation coating in the current market generally encounters the phenomena of gun blockage by a composite rock slice, splashing of the composite rock slice and tilting of the composite rock slice in the construction process, not only increases the construction difficulty, but also seriously influences the decoration effect, and is a technical problem to be solved by technical personnel in the field.

How to develop a water-based granite imitation coating which can meet the decoration effect of water-based granite imitation and can meet the requirements that a composite rock slice does not block a gun, the composite rock slice is prevented from splashing, the composite rock slice is prevented from tilting and the industrial standard (JG/T24-2018) is met in the construction process is a problem to be solved urgently by technical personnel in the field.

Disclosure of Invention

The invention aims to overcome the defects that the prior art water-based granite imitation coating is easy to break in the production process and commonly encounters the defects of gun resistance of a composite rock slice, splashing of the composite rock slice and tilting of the composite rock slice in the construction process, and provides the water-based granite imitation coating which is environment-friendly, high in simulation degree, dried and has the effect of imitating the granite and a preparation method thereof. The coating is a non-hazardous article and has no strict fire-proof requirement on production, transportation and storage.

In order to achieve the purpose, the water-based granite imitation coating for preventing the composite rock slices from tilting comprises the following components:

the raw material formula of the coating comprises the following components in percentage by mass:

13.50-18.45% of acrylate copolymer emulsion, 1.80-2.12% of hydroxyethyl cellulose, 0.03-0.06% of organic amine neutralizer, 0.02-0.03% of defoaming agent, 0.30-0.60% of antifreezing agent, 0.51-0.65% of film-forming assistant, 0.10-0.20% of bactericide, 2.20-3.20% of thickening agent, 55.50-63.50% of 40-80 mesh natural colored sand, 1.50-4.50% of 80-120 mesh natural colored sand, 5.00-12.00% of composite rock slice, 0.20-0.40% of soft slice agent, 0.40-0.80% of additional anti-caking agent and 6.40-8.10% of deionized water.

The acrylate copolymer emulsion has the Brookfield viscosity of 4500-5000 mPa.s (25 ℃, 3#, 12 rpm), the solid content of 46.5 +/-0.3%, the particle diameter of 0.08-2 mu m, the volatile organic compound (VOC for short) of preferably less than 20g/L, excellent film forming performance, excellent low-temperature high-humidity water-resistant recovery performance, excellent color spreading effect, excellent ultraviolet yellowing resistance and good construction atomization effect, and preferably RS-707 of Changcidefujiku corporation, GST-408 of Beijing ruicheng building materials GmbH and XS-889 of Jinsenzai chemical industry Co., Ltd.

Wherein the hydroxyethyl cellulose can be hydroxyethyl cellulose conventionally used in the field, the viscosity of the hydroxyethyl cellulose at 20 ℃ (1% solution) is more than or equal to 30000 mPas, the particle size is less than 500 mu m (98%), the pH value of 0.5% solution is 5-7, and the hydroxyethyl cellulose HS 30000YP2 is preferred.

Wherein, the organic amine neutralizer is an alcohol amine organic compound, is a light yellow transparent liquid, is easy to dissolve in water, and has the specific gravity of 1.03 +/-0.05 g/ml. Has weak alkalinity, low volatility and better pH stability than ammonia water, and can effectively replace ammonia water. Meanwhile, the low shear viscosity can be effectively reduced, and the fluidity and the leveling property of the coating are improved. The organic amine neutralizer is preferably HT-95 produced by break Thai chemical company in Nantong City.

The defoaming agent is a polysiloxane-polyether copolymerization defoaming agent, the effective component of the defoaming agent is more than or equal to 18 percent, the defoaming capability is strong, the foam inhibition time is long, and the compatibility with the acrylate copolymerization emulsion is good. Preferably thick paste type coating antifoaming agents B-0353 and B-0319 manufactured by Federal Fine chemistry Co., Ltd, in Guangdong.

The antifreeze can be an antifreeze conventionally used in the art, and is preferably propylene glycol and/or ethylene glycol.

The film-forming assistant can be a film-forming assistant of colorless transparent low-odor liquid which is conventionally used in the field, the mass content of the film-forming assistant is more than or equal to 99 percent, the specific gravity (20 ℃) is 0.95, the refractive index (20 ℃)1.4423, the solubility in water (20 ℃) is insoluble, the volatilization speed (butyl acetate is 1) is 0.002, the boiling point (760mmHg) is 255 ℃, the freezing point is-50 ℃, the compactness of a paint film can be ensured, and the emulsion paint can achieve good paint film performance when being dried under unfavorable temperature and humidity. Preferably a dodecyl alcohol ester manufactured by Runtai chemical Co.

The bactericide can be an efficient, broad-spectrum and environment-friendly antiseptic bactericide which is conventionally used in the field, has a fast and efficient sterilization and antiseptic effect, is effective in a wider pH value range (less than 9.5), has no stimulation to human bodies in a use concentration range, does not contain heavy metal and other toxic and harmful components, has a broad-spectrum and efficient inhibition and killing effect on microorganisms such as bacteria, actinomycetes and fungi (saccharomycetes and mycete), is a light yellow or yellow green transparent liquid in appearance, has the effective component more than or equal to 2.5 percent and has the density (20 ℃) of 1.00-1.10 g/ml. Preferably LXE-1 bactericide from Shanghai Peng chart chemical technology, Inc.

The thickening agent can be a nonionic associative polyurethane thickening agent which is conventionally used in the field, and has the advantages of high thickening efficiency, good splashing resistance and slightly turbid milky viscous liquid appearance. The effective component is 28 + -1% (150 deg.C, 45 min). Preferably HT-820 thickener produced by break Thailand chemical Co.

Wherein, the natural color sand of 40-80 meshes and the natural color sand of 80-120 meshes are screened by stainless steel grading screens with corresponding meshes, the mass ratio of the upper screen to the lower screen of the screened natural color sand is not higher than 2%, and the mass ratio of the lower screen to the natural color sand is not higher than 15%. The mechanical stability of the natural color sand is passed without rain. The product does not fade after being boiled in boiling water for 1 hour, and does not pulverize and discolor after resisting artificial climate aging for 1000 hours. Preferably natural colored sand produced by Hebei Chuangjuman products, Inc. The color of the natural colored sand can be selected from the product catalog of the supplier.

The composite rock slice is prepared by mixing, stirring, rolling, drying and other processes by using synthetic resin emulsion as a main binder and matching with various rock powders, pigments, fillers and the like, and is a flaky material with different colors and shapes. The outer package should be marked clearly, without damage, without adhesion and agglomeration in appearance, pass through mechanical stability, water resistance (120h) without bleeding of the expansion sheet, film forming assistant resistance (120h) without bleeding of the expansion sheet, thickness of 0.022-0.025mm, 180. The bending (3 times) has no crack and fracture. Preferably, the composite rock slices are made of new materials of Ji' an Tian Cheng and/or Shanghai rock color building materials of the company Limited. The color and size of the composite rock laminate may be selected from a supplier's product catalog.

The soft tablet is white powder, and can effectively prevent the composite rock slice from being broken and splashed in the processes of high-speed stirring, spraying and extruding and press coating in the production and construction processes. Preferably, the film forming agent SFA-004 manufactured by Kaiser science and technology Limited.

Wherein the appearance of the external anti-caking agent is white paste, the density is 1.0-1.3g/cm3(20 ℃), the external anti-caking agent is dissolved in water, the pH value is 7.0, a 2% aqueous solution is light white transparent liquid, the viscosity is 28-30s (coating-4 standard/23 +/-0.5 ℃), and the coating drying time is 5-8 minutes. The external anti-caking agent FB-02A produced by Weihai cloud chemical development institute is preferred.

The invention also provides a preparation method of the water-based granite imitation coating for preventing the composite rock slice from tilting, which comprises the following steps:

(1) selecting a composite rock slice according to the decorative effect of a preset granite decorative coating;

(2) pre-dissolving the composite rock slices and the film-forming additive to obtain a pre-dissolved substance A; preferably, 50 percent of the total amount of the film-forming additive is added and pre-dissolved for 20 to 30 minutes;

adding the soft sheet agent into the rest film-forming auxiliary agent, and stirring at a high speed of 1200-1500 rpm for 15-20 minutes until the appearance is a light yellow transparent viscous liquid, and the fineness is less than or equal to 60 mu m, so as to obtain a pre-dissolved substance B;

stirring hydroxyethyl cellulose, deionized water, an organic amine neutralizer and a defoaming agent at a high speed of 1200-1500 rpm for 15-20 minutes to obtain a mixed solution C; preferably, 40-60% of the total amount of the deionized water is added, and 30-50% of the total amount of the defoaming agent is added;

(3) stirring the mixed solution C, deionized water and a defoaming agent at a high speed of 1200-1500 rpm for 15-20 minutes under a stirring state to obtain a mixed solution D; preferably, 20-30% of the total amount of the deionized water is added, and 30-50% of the total amount of the defoaming agent is added;

(4) stirring at medium speed of 800-1100 rpm for 5-15 minutes to obtain a mixture E in a stirring state, wherein the defoaming agent, the bactericide, the acrylate copolymer emulsion, the antifreezing agent, the thickening agent, the deionized water and the external anti-caking agent are added into the mixed dissolved substance D;

(5) under the stirring state, sequentially adding 40-80 mesh natural colored sand and 80-120 mesh natural colored sand into the mixture E, and stirring at a low speed of 500-700 revolutions per minute for 5-15 minutes to obtain a mixture F;

(6) and adding the pre-dissolved matter A and the pre-dissolved matter B into the mixture F under the stirring state, and stirring at a low speed of 500-700 revolutions per minute for 5-15 minutes to obtain the water-based granite imitation coating for preventing the composite rock fragments.

Preferably, when the pre-dissolved matter B is prepared in the step (2), the pre-dissolved matter B is dissolved after being stirred at a high speed, the fineness is less than or equal to 60 mu m, and if the fineness is not reached, the stirring operation is repeated after standing until the fineness is less than or equal to 60 mu m.

The invention also provides a construction method of the water-based granite imitation coating for preventing the composite rock slices, which comprises the following steps:

(1) the product is applied over a coating where the primer has been applied and the primer coating has completely dried.

(2) And selecting a city CY9511A coating spray gun, confirming whether the ejector pin and the all-copper large flow cap are concentric, and if the ejector pin and the all-copper large flow cap are not concentric, re-screening the spray gun until the requirements are met.

(3) The product of the invention is constructed by combining two persons. One person loads the product into a city CY9511A paint spray gun which is confirmed to meet the requirements, adjusts the air inlet loading pressure to be 0.5-0.7 MPa, and carries out spraying construction twice with the interval time of 10 minutes. And the other person uses an 8-inch round head flattening roller to soak the coating which is sprayed twice and then rolls and coats the coating once again. The interval time between the roll coating and the second spraying is 2 minutes, and the water-based granite imitation coating for preventing the composite rock slice from warping is obtained after the coating is dried.

(4) The product of the invention can determine whether to select the finishing varnish according to the design requirements of architectural decoration designers on the coating. If the coating is selected, the water-based granite imitation coating for preventing the composite rock slice from warping is completely dried and then is sprayed with a finishing varnish.

In the invention, the room temperature is defined by the conventional definition in the field, and is generally 5-40 ℃.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.

The reagents and starting materials used in the present invention are commercially available.

The water-based granite imitation coating for preventing the composite rock slice from warping and the preparation method thereof have the beneficial effects that:

1) the water-based granite-like coating for preventing the composite rock slices from warping has a granite-like decoration function and a building coating protection function.

2) The waterborne granite-like coating for preventing the composite rock slices from warping does not have the phenomenon that the composite rock slices are broken due to high-speed stirring in the production process.

3) The product of the invention adopts a special spray gun for spraying construction, the composite rock slice does not block the spray gun and does not generate splashing phenomenon in the spraying process, and meanwhile, the construction efficiency can be improved.

4) The composite rock slice of the product of the invention does not tilt, and the special roller is adopted for flattening construction, thereby improving the simulation degree of the artificial granite.

5) The coating of the product can determine whether to select the finishing varnish according to the design requirements of architectural decoration designers on the coating. If the coating is selected, the water-based granite imitation coating for preventing the composite rock slice from warping is completely dried and then is sprayed with a finishing varnish, so that the stain resistance of the coating can be improved.

6) The paint film of the product of the invention has excellent performances of alkali resistance, artificial climate aging resistance and the like.

7) The product of the invention belongs to non-hazardous articles, and has no strict fire-proof requirements on production, transportation and storage.

8) The preparation method of the product has simple process, has no adverse effect on operators during production, and is suitable for industrial production.

9) The product of the invention has good flexibility, and the coating system can prevent cracking.

10) The product of the invention is an aqueous product, can replace natural granite, and is economical, safe and environment-friendly.

Detailed Description

In order to more clearly describe the technical contents of the present invention, the following further description is given in conjunction with specific embodiments.

Sources of raw materials used in the following examples:

acrylate copolymer emulsion RS-707: manufactured by Fuke technologies of Changro Bady;

acrylate copolymer emulsion GST-408: manufactured by Beijing Ruishan building materials, Inc.;

acrylate copolymer emulsion XS-889: manufactured by Jinan Sen chemical industries, Ltd;

hydroxyethyl cellulose HS 30000YP 2: production by the signal company;

organic amine neutralizer HT-95: break produced by chemical Limited company of Thai in Nantong City;

defoamer B-0353: a high build coating defoamer manufactured by federal fine chemicals limited in guangdong;

defoaming agent B-0319: a high build coating defoamer manufactured by federal fine chemicals limited in guangdong;

anti-freeze agents, propylene glycol and/or ethylene glycol as commonly used in the aqueous coating art;

dodecyl alcohol ester as film-forming assistant: manufactured by Runtai chemical Co., Ltd;

fungicide LXE-1: shanghai Peng Tu chemical technology, Inc.;

thickener HT-820: break produced by chemical Limited company of Thai in Nantong City;

40-80 mesh natural colored sand: the color of the natural color sand can be selected from the product catalog of suppliers;

80-120 meshes of natural colored sand: the color of the natural color sand can be selected from the product catalog of suppliers;

compounding rock slices: the Ji' an Tian Cheng New Material Co., Ltd, the color and size of the composite rock slice can be selected in the product catalog of the supplier;

compounding rock slices: the color and the size of the composite rock slices can be selected from the product catalog of suppliers;

soft tablet SFA-004: manufactured by Kaiser science and technology Limited liability company;

external anti-caking agent FB-02A: production of Weihai cloud clearing chemical development institute;

water-based granite-like coating SQ-0065: guangdong Shunde Stone coating Co., Ltd;

water-based granite imitation coating ZCO-008: guangdong Shundjia Luomai paint, manufactured by Guangdong.

Example 1

The raw material formulation (wt%) of the aqueous granite imitation coating for preventing the composite rock slice from warping is shown in table 1 below.

TABLE 1 raw material formulation (wt%) of the aqueous granite-like coating for preventing the upwarp of composite rock slices of example 1

The preparation method comprises the following steps:

(1) selecting composite rock slices according to the decorative effect of the granite decorative coating determined by an architectural decoration designer, wherein the colors and the sizes of the composite rock slices select TC-002 medium slices and TC-004 large slices in a product catalog of Ji' an Tian Cheng New Material Co.

(2) And pre-dissolving the selected composite rock slices for 20-30 minutes by using 50% of film-forming auxiliary agent in advance according to the required amount to obtain a pre-dissolved substance A for later use.

(3) And (3) adding the soft tablet agent into the rest film-forming auxiliary agent under stirring, stirring at a high speed of 1200 rpm for 20 minutes, detecting and dissolving, wherein the fineness is less than or equal to 60 mu m, and if the fineness does not meet the requirement, standing for 2 hours and then repeating the operation, wherein the operation is usually carried out for 1-2 times. Until the appearance is light yellow transparent viscous liquid, the fineness is less than or equal to 60 mu m, and a pre-dissolved substance B is obtained for standby.

(4) Stirring the hydroxyethyl cellulose, 40.0 percent of deionized water, the organic amine neutralizer and 30.0 percent of the defoaming agent at a high speed of 1200 rpm for 20 minutes to obtain a mixed dissolved solution C;

(5) under the stirring state, carrying out high-speed stirring on the mixed solution C, 30.0% of deionized water and 30.0% of defoaming agent at 1200 rpm for 20 minutes to obtain a mixed solution D;

(6) adding the rest of the defoaming agent, the bactericide, the acrylate copolymer emulsion, the antifreezing agent, the thickener, the rest of the deionized water and the additional anti-caking agent into the mixed dissolved matter D under the stirring state, and stirring at the medium speed of 800 revolutions per minute for 15 minutes to obtain a mixture E;

(7) under the stirring state, sequentially adding 40-80 mesh natural colored sand and 80-120 mesh natural colored sand into the mixture E, and stirring at a low speed of 500 revolutions per minute for 15 minutes to obtain a mixture F;

(8) and adding the pre-dissolved matter A and the pre-dissolved matter B into the mixture F under the stirring state, and stirring at a low speed of 500 revolutions per minute for 15 minutes to obtain the water-based granite imitation coating for preventing the composite rock fragments.

Wherein the percentages are mass percentages relative to the mass of each corresponding component.

Example 2

The raw material formulation (wt%) of the aqueous granite imitation coating for preventing the composite rock slice from warping is shown in table 2 below.

Table 2 raw material formulation (wt%) of the aqueous granite-like coating for preventing the composite rock slice from warping in example 2

Acrylate copolymer emulsion GST-408	18.45％
		Hydroxyethyl cellulose HS 30000YP2	2.12％
Organic amine neutralizer HT-95	0.05％
		Defoaming agent B-0353	0.03％
Antifreeze ethylene glycol	0.50％
		Dodecyl alcohol ester as film forming assistant	0.65％
Bactericide LXE-1	0.20％
		Thickener HT-820	2.80％
40-80 mesh natural color sand	56.20％
		80-120 mesh natural color sand	3.80％
Composite rock piece TC-003 small piece: ji an Tian Cheng New Material Co Ltd	0.50％
		Composite rock slice TC-004 middle slice: ji an Tian Cheng New Material Co Ltd	2.00％
Composite rock fragments TC-005 large pieces: ji an Tian Cheng New Material Co Ltd	5.50％
		Soft tablet SFA-004	0.20％
External anti-caking agent FB-02A	0.60％
		Deionized water	6.40％

The preparation method comprises the following steps:

(1) selecting composite rock slices according to the decorative effect of the granite decorative coating determined by an architectural decoration designer, wherein the colors and the sizes of the composite rock slices are selected from TC-003 small slices, TC-004 medium slices and TC-005 large slices in a product catalog of Jiansian sanden New Material Co.

(2) And pre-dissolving the selected composite rock slices for 20-30 minutes by using 50% of film-forming auxiliary agent in advance according to the required amount to obtain a pre-dissolved substance A for later use.

(3) And (3) adding the soft tablet agent into the rest film-forming auxiliary agent under stirring, stirring at a high speed of 1400 rpm for 18 minutes, detecting and dissolving, wherein the fineness is less than or equal to 60 mu m, and if the fineness does not meet the requirement, standing for 2 hours and then repeating the operation, wherein the operation is usually carried out for 1-2 times. Until the appearance is light yellow transparent viscous liquid, the fineness is less than or equal to 60 mu m, and a pre-dissolved substance B is obtained for standby.

(4) Stirring the hydroxyethyl cellulose, 50.0 percent of deionized water, 40.0 percent of organic amine neutralizer and 40.0 percent of defoaming agent at a high speed of 1400 revolutions per minute for 18 minutes to obtain a mixed dissolved solution C;

(5) under the stirring state, carrying out high-speed stirring on the mixed solution C, 25.0% of deionized water and 40.0% of defoaming agent at 1400 revolutions per minute for 18 minutes to obtain a mixed solution D;

(6) adding the rest of the defoaming agent, the bactericide, the acrylate copolymer emulsion, the antifreezing agent, the thickener, the rest of the deionized water and the additional anti-caking agent into the mixed dissolved matter D under the stirring state, and stirring at the medium speed of 1000 revolutions per minute for 10 minutes to obtain a mixture E;

(7) under the stirring state, sequentially adding 40-80 mesh natural colored sand and 80-120 mesh natural colored sand into the mixture E, and stirring at low speed for 10 minutes at 600 revolutions per minute to obtain a mixture F;

(8) and adding the pre-dissolved matter A and the pre-dissolved matter B into the mixture F under the stirring state, and stirring at a low speed of 600 revolutions per minute for 10 minutes to obtain the water-based granite imitation coating for preventing the composite rock fragments.

Wherein the percentages are mass percentages relative to the mass of each corresponding component.

Example 3

The raw material formulation (wt%) of the aqueous granite imitation coating for preventing the composite rock slice from warping is shown in table 3 below.

Table 3 raw material formulation (wt%) of the aqueous granite-like coating for preventing the composite rock slice from warping in example 3

Acrylate copolymer emulsion XS-889	16.20％
		Hydroxyethyl cellulose HS 30000YP2	1.90％
Organic amine neutralizer HT-95	0.03％
		Defoaming agent B-0319	0.02％
Antifreeze ethylene glycol	0.60％
		Dodecyl alcohol ester as film forming assistant	0.55％
Bactericide LXE-1	0.20％
		Thickener HT-820	2.20％
40-80 mesh natural color sand	55.50％
		80-120 mesh natural color sand	1.50％
Compound rock slice YC-921 small pieces: shanghai color building materials Co Ltd	2.00％
		Composite rock slice YC-929 middle slice: shanghai color building materials Co Ltd	4.00％
Compound slice YC-910 big slice: shanghai color building materials Co Ltd	6.00％
		Soft tablet SFA-004	0.40％
External anti-caking agent FB-02A	0.80％
		Deionized water	8.10％

The preparation method comprises the following steps:

(1) selecting composite rock slices according to the decorative effect of the granite decorative coating determined by an architectural decoration designer, wherein the colors and the sizes of the composite rock slices are YC-921 small slices, YC-929 medium slices and YC-910 large slices in the product catalog of Shanghai rock color building materials Co.

(2) And pre-dissolving the selected composite rock slices for 20-30 minutes by using 50% of film-forming auxiliary agent in advance according to the required amount to obtain a pre-dissolved substance A for later use.

(3) And (3) adding the soft tablet agent into the rest film-forming auxiliary agent under stirring, stirring at a high speed of 1500 rpm for 15 minutes, detecting and dissolving, wherein the fineness is less than or equal to 60 mu m, and if the fineness does not meet the requirement, standing for 2 hours and then repeating the operation, wherein the operation is usually carried out for 1-2 times. Until the appearance is light yellow transparent viscous liquid, the fineness is less than or equal to 60 mu m, and a pre-dissolved substance B is obtained for standby.

(4) Stirring the hydroxyethyl cellulose, 60.0 percent of deionized water, 50.0 percent of organic amine neutralizer and 50.0 percent of defoaming agent at a high speed of 1500 revolutions per minute for 15 minutes to obtain a mixed dissolved solution C;

(5) under the stirring state, the mixed solution C, 20.0 percent of deionized water and 50.0 percent of defoaming agent are stirred at a high speed of 1500 revolutions per minute for 15 minutes to obtain a mixed solution D;

(6) adding the rest of the defoaming agent, the bactericide, the acrylate copolymer emulsion, the antifreezing agent, the thickener, the rest of the deionized water and the additional anti-caking agent into the mixed dissolved matter D under the stirring state, and stirring at the medium speed of 1100 rpm for 5 minutes to obtain a mixture E;

(7) under the stirring state, sequentially adding 40-80 mesh natural colored sand and 80-120 mesh natural colored sand into the mixture E, and stirring at low speed for 5 minutes at 700 revolutions per minute to obtain a mixture F;

(8) and adding the pre-dissolved matter A and the pre-dissolved matter B into the mixture F under the stirring state, and stirring at low speed for 5 minutes at 700 revolutions per minute to obtain the water-based granite imitation coating for preventing the composite rock fragments.

Wherein the percentages are mass percentages relative to the mass of each corresponding component.

Comparative example 1:

the raw material formulation (wt%) of the aqueous granite-like coating is shown in Table 4 below.

TABLE 4 raw material formulation (wt%) of aqueous granite-like coating of comparative example 1

The preparation is as in example 1.

Comparative example 2:

the raw material formulation (wt%) of the aqueous granite-like coating is shown in Table 5 below.

TABLE 5 raw material formulation (wt%) of aqueous granite-like coating of comparative example 2

Acrylate copolymer emulsion GST-408	12.45％
		Hydroxyethyl cellulose HS 30000YP2	2.12％
Neutralization with organic aminesAgent HT-95	0.05％
		Defoaming agent B-0353	0.03％
Antifreeze ethylene glycol	0.50％
		Dodecyl alcohol ester as film forming assistant	0.65％
Bactericide LXE-1	0.20％
		Thickener HT-820	2.80％
40-80 mesh natural color sand	54.50％
		80-120 mesh natural color sand	7.50％
Composite rock piece TC-003 small piece: ji an Tian Cheng New Material Co Ltd	0.50％
		Composite rock slice TC-004 middle slice: ji an Tian Cheng New Material Co Ltd	2.00％
Composite rock fragments TC-005 large pieces: ji an Tian Cheng New Material Co Ltd	5.50％
		Soft tablet SFA-004	0.20％
External anti-caking agent FB-02A	0.60％
		Deionized water	10.40％

The preparation is as in example 2.

Comparative example 3:

the raw material formulation (wt%) of the aqueous granite-like coating is shown in Table 6 below.

TABLE 6 raw material formulation (wt%) of aqueous granite-like coating of comparative example 3

Acrylate copolymer emulsion XS-889	16.20％
		Hydroxyethyl cellulose HS 30000YP2	1.90％
Organic amine neutralizer HT-95	0.03％
		Defoaming agent B-0319	0.02％
Antifreeze ethylene glycol	0.60％
		Dodecyl alcohol ester as film forming assistant	0.55％
Bactericide LXE-1	0.20％
		Thickener HT-820	2.20％
40-80 mesh natural color sand	55.50％
		80-120 mesh natural color sand	1.50％
Compound rock slice YC-921 small pieces: shanghai color building materials Co Ltd	2.00％
		Composite rock slice YC-929 middle slice: shanghai color building materials Co Ltd	4.00％
Compound slice YC-910 big slice: shanghai color building materials Co Ltd	6.00％
		Soft tablet SFA-004	0.50％
External anti-caking agent FB-02A	0.30％
		Deionized water	8.50％

The procedure is as in example 3.

Effects of the embodiment

The performance and environmental index comparison experiments of the waterborne granite-like coating for preventing the composite rock slice from warping, the commercially available waterborne granite-like coatings SQ-0065 and ZCO-008 and the waterborne granite-like coatings of the comparative examples 1 to 3 are carried out, and the specific results are shown in tables 7 and 8.

TABLE 7 respective product Performance indices

TABLE 8 environmental protection index

As can be seen from Table 7, the roller coating construction of the water-based granite imitation coating for preventing the composite rock slice from warping is obviously superior to the commercially available water-based granite imitation coatings SQ-0065 and ZCO-008 and the comparative examples 1-3. The composite rock slice in the water-based granite-like coating container for preventing the composite rock slice from warping has no crushing and adhesion, the constructability composite rock slice does not block guns and splash, the composite rock slice in the coating does not warp, the phenomenon that a special roller flattens and does not have a roller bonding phenomenon, the composite rock slice in the coating does not warp after being flattened, and the drying time, the initial drying crack resistance, the adhesion strength and the artificial climate aging resistance of the composite product in the coating are obviously superior to those of the commercial products and the comparative examples 1 to 3 of the invention. Other performance indexes of the invention can meet and exceed the technical requirements of the currently effective product standard JG/T24-2018 exterior wall type products.

As can be seen from Table 8, the VOC content of the water-based granite imitation coating for preventing the composite rock slice from warping is far lower than that of commercial sand wall-shaped building coatings SQ-0065 and ZCO-008, free formaldehyde, benzene, toluene and heavy metal substances are not detected, the technical requirements of HJ 2537-. The content (VOC) of Volatile Organic Compounds (VOC) of the commercially available water-based granite imitation coatings SQ-0065 and ZCO-008 and comparative examples 1-3 of the invention is obviously higher than that of the water-based granite imitation coating for preventing the composite rock slice from warping.

Moreover, as can be seen from example 1 and comparative example 1, the content of the soft tablet and the external anti-caking agent has a certain influence on the implementation effect; from example 2 and comparative example 2, it can be seen that the content and type of film-forming substances in the emulsion also have certain influence on the implementation effect, the final implementation effect cannot be achieved only by the optimization of the soft tablet and the external anti-caking agent, and the implementation effect of the invention can be achieved only by the optimization combination of multiple components; from example 1 and comparative example 1, it is clear that the content of the external anti-caking agent has a certain influence on the performance, and the smaller the content, the better the performance. Thus illustrating that: the technical effect of the invention can be achieved only by selecting the combination with the preferential overlapping content for the types of emulsion, soft tablets and external anti-caking agent in the product of the invention, and the product is not a simple combination and is also the result of a large number of tests.

In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The description is thus to be regarded as illustrative instead of limiting.