Weather-resistant double-component antiskid coating and preparation method thereof

Abstract

The invention belongs to the field of coatings, and relates to a weather-resistant bi-component antiskid coating and a preparation method thereof. The invention relates to a weather-resistant double-component anti-skid coating, which consists of a component A and a component B in a mass ratio of 6: 1, the component A is prepared from the following raw materials in percentage by weight: 35 to 45 percent of acrylic acid base resin, 0.2 to 0.5 percent of controlled flocculation type wetting dispersant, 1 to 3 percent of bentonite, 1 to 3 percent of powdery rheological additive polyamide wax, 22 to 26 percent of rutile titanium dioxide, 10 to 12 percent of 1250 kaolin, 8 to 12 percent of 40 to 80-mesh quartz sand and 0.2 to 0.4 percent of NX-3830S strong defoaming agent; the coating is prepared from the following raw materials in percentage by weight: 1%-3% of epoxy resin, 0.2%-0.4% of Hamming chemical EFKA-3777 leveling agent, 0.1%-0.3% of liquid rheological additive BYK-410, 1%-3% of slow drying solvent PMA and 8%-12% of According to the weather-resistant two-component anti-skid coating and the preparation method thereof, after an anti-skid material is added into the prepared coating, the original paint viscosity is high, the storage anti-settling property is good, and the construction anti-settling property is good.

Description

Technical Field

[0001] The invention relates to the field of coatings, and in particular to a weather-resistant two-component anti-slip coating and a preparation method thereof. Background Art

[0002] Anti-slip coatings are widely used in various underground garage ramps, factory floors, homes, gardens and other scenes. At present, anti-slip coatings are divided into single-component anti-slip coatings, two-component anti-slip coatings and multi-component anti-slip coatings according to their composition. Single-component anti-slip coatings have only one component, which is convenient for construction, but the performance is not as good as that of two-component coatings. Two-component anti-slip coatings have component A and component B packaged separately. The anti-slip material can be placed in one of the components. The two components are mixed during construction and then applied. At present, the absolute majority of them use a two-component epoxy system. The curing agent is often an amine that can react chemically with epoxy. This thermosetting system is very hard and wear-resistant after the reaction and can be used on steel and concrete. Multi-component anti-slip coatings are film-forming resins, curing agents, anti-slip granules, etc. packaged separately. When used, they are mechanically mixed, or the anti-slip granules are sprayed immediately after painting, so that the anti-slip granules are firmly embedded in the paint film.

[0003] Single-component anti-slip coatings are easy to apply but have poor performance because they are mostly dried by solvent evaporation or oxidation, the paint film has low cross-linking density, low hardness and poor wear resistance, and poor chemical resistance; multi-component construction is inconvenient and requires additional anti-slip granules during construction, and the anti-slip granules are prone to sedimentation in the barrel and require constant stirring; manual throwing / spraying construction requires multiple layers of paint film + anti-slip granules + paint film, which is greatly affected by human factors and is prone to uneven particles, exposed particles and other drawbacks; in order to improve the adhesion of the coating so that the anti-slip particles do not settle, the two-component application is currently mainly the epoxy system. The epoxy resin paint film has very strong adhesion and can firmly adhere to a variety of substrates to prevent the anti-slip material from settling or falling off; however, due to the molecular structure of epoxy resin, the outdoor weather resistance is poor and it is not suitable for outdoor use. In addition, the general anti-slip granules are prone to sedimentation in the barrel during construction, and are prone to discoloration and corrosion resistance outdoors. For example: CN115011212A-A water-based epoxy asphalt colored road anti-skid coating based on epoxy modified petroleum resin and its preparation method, component A: 50 parts of water-based epoxy resin emulsion, 10 parts of water, 0.4 parts of dispersant, 0.1 parts of defoamer, 0.3 parts of wetting and leveling agent, 10 parts of barite powder, 21.2 parts of talcum powder, 8 parts of pigment, a total of 100 parts; component B: 100-140 parts of water-based petroleum resin modified polyamine epoxy resin curing agent. Patent document: CN 111995291 A discloses a water-based epoxy acrylic modified two-component road anti-skid coating and its preparation method, including component A and component B, wherein component A contains both water-based epoxy resin and water-based acrylic resin, but the mixing compatibility of water-based epoxy resin and water-based acrylic resin is poor. Patent document: CN 115851103 A A water-based two-component matte scratch-resistant orange-grain paint and a preparation method thereof, component A: 5-15 parts of deionized water, 60-70 parts of water-based acrylic resin, 0.5 parts of wetting agent, 6 parts of film-forming aid, 0.2 parts of defoaming agent, 0.2 parts of pH adjuster, 0.5 parts of thickener, 1-3 parts of water-based orange-grain aid, 15-25 parts of water-based color paste; component B: 8-10 parts of water-based curing agent, 2-3 parts of solvent; from the perspective of material composition, it pays more attention to the orange-grain effect, matte performance and water and scratch resistance of the paint. Summary of the invention

[0004] The purpose of the present invention is to provide a weather-resistant two-component anti-skid coating and a preparation method thereof. After the anti-skid material is added to the prepared coating, the original paint has high viscosity and is good in anti-settling during storage and construction.

[0005] In order to solve the above technical problems, the present invention provides a weather-resistant two-component anti-slip coating and a preparation method thereof as follows:

[0006] A weather-resistant two-component anti-slip coating, consisting of component A and component B, wherein the mass ratio of component A to component B is 6:1;

[0007] The component A is composed of the following raw materials in weight percentage:

[0008]

[0009]

[0010] The component B is composed of the following raw materials in weight percentage:

[0011] Aliphatic polyisocyanate 40%~50%

[0012] Dehydrated butyl ester 49.8%~59.8%

[0013] Dewatering agent 0.1%~0.3%.

[0014] Optionally, it is composed of component A and component B, the mass ratio of component A to component B is 6:1; and component A is composed of the following raw materials in weight percentage:

[0015]

[0016] The component B is composed of the following raw materials in weight percentage:

[0017] Aliphatic polyisocyanate 45%

[0018] Dehydrated butyl ester 54.8%

[0019] Dewatering agent 0.2%.

[0020] Optionally, it is composed of component A and component B, the mass ratio of component A to component B is 6:1; and component A is composed of the following raw materials in weight percentage:

[0021]

[0022] The component B is composed of the following raw materials in weight percentage:

[0023] Aliphatic polyisocyanate 50%

[0024] Dehydrated butyl ester 49.8%

[0025] Dewatering agent 0.2%.

[0026] Optionally, it is composed of component A and component B, the mass ratio of component A to component B is 6:1; and component A is composed of the following raw materials in weight percentage:

[0027]

[0028]

[0029] The component B is composed of the following raw materials in weight percentage:

[0030] Aliphatic polyisocyanate 40%

[0031] Dehydrated butyl ester 59.8%

[0032] Dewatering agent 0.2%.

[0033] Optionally, it is composed of component A and component B, the mass ratio of component A to component B is 6:1; and component A is composed of the following raw materials in weight percentage:

[0034]

[0035] The component B is composed of the following raw materials in weight percentage:

[0036] Aliphatic polyisocyanate 50%

[0037] Dehydrated butyl ester 49.9%

[0038] Dewatering agent 0.2%.

[0039] Optionally, it is composed of component A and component B, the mass ratio of component A to component B is 6:1; and component A is composed of the following raw materials in weight percentage:

[0040]

[0041] The component B is composed of the following raw materials in weight percentage:

[0042] Aliphatic polyisocyanate 40%

[0043] Dehydrated butyl ester 59.7%

[0044] Dewatering agent 0.3%.

[0045] Optionally, it is composed of component A and component B, the mass ratio of component A to component B is 6:1; and component A is composed of the following raw materials in weight percentage:

[0046]

[0047]

[0048] The component B is composed of the following raw materials in weight percentage:

[0049] Aliphatic polyisocyanate 45%

[0050] Dehydrated butyl ester 54.8%

[0051] Dewatering agent 0.2%.

[0052] A method for preparing a weather-resistant two-component anti-slip coating, wherein the preparation method of component A comprises the following steps: pre-dispersion: adding the controlled flocculation wetting dispersant, powdered rheological additive polyamide wax, organic bentonite 881-B, rutile titanium dioxide and 1250 kaolin to an acrylic resin base material for pre-dispersion, and adding while dispersing;

[0053] Grinding: Grinding the dispersed mixed slurry to a particle size of ≤40 μm, and controlling the sand mill outlet temperature to <60°C during grinding;

[0054] Dispersion: The ground mixed slurry is dispersed at a dispersion speed of 500-800 rpm, and liquid polyurea rheological additive BYK-410, Changsha Xinxiangrong additive NX-3830S strong defoamer, Hemmings Chemical EFKA-3777 leveling agent, slow-drying solvent PMA and butyl ester are added while dispersing, and the dispersion is continued for 10-15 minutes; finally, quartz sand with a mesh size of 40-80 is added to prevent skid particles, and the dispersion is carried out for 10 minutes. The temperature is maintained at 25-50°C during the dispersion. After the dispersion is completed, the temperature is maintained and the packaging is quickly carried out.

[0055] Optionally, the pre-dispersion speed is 800-1000 rpm, and the dispersion time is 30±5 min.

[0056] The method of using weather-resistant two-component anti-slip coating is to mix component A and component B in a mass ratio of 6:1. No anti-slip particles will settle within two hours. Then apply two thick coats.

[0057] The weather-resistant two-component anti-skid coating of the present invention uses an acrylic base resin as a base resin, which has excellent weather resistance and interacts with the aliphatic polyisocyanate in the second component to ensure the outdoor weather resistance and reaction strength of the basic paint film after the construction reaction. In the first component, the controlled flocculation type wetting dispersant ensures the wetting of the pigment while reducing the molecular movement and deposition of the microscopic vertical surface; the powdered rheological additive polyamide wax, Hemmings Chemical EFKA-3777 leveling agent and liquid rheological additive BYK-410 are combined to improve the sedimentation of the original paint during storage and construction, ensuring that the particles are evenly distributed after construction. 40-80 mesh quartz sand is added to the coating of the present invention as an anti-skid material, and the other components in the coating interact to ensure that the anti-skid material maintains good anti-sedimentation performance during the storage and construction of the coating, ensuring that the coating has good weather resistance. Experiments have shown that the anti-skid particles of the original paint have no precipitation within 60 days at room temperature when the barrel is not opened and stored.

[0058] The preparation of component A of the present invention is first pre-dispersed and then ground to ensure the dispersion effect and the viscosity of the original paint. The organic bentonite 881-B forms a T-shaped microscopic card house structure; the powdered rheological additive polyamide wax forms strong hydrogen bonds between molecules when it is stable, forming a three-dimensional network structure. The hydrogen bonds are broken after shearing, which will not cause the viscosity of the color paste to be too high and unable to be ground during the production process. However, after the grinding is completed and the shear force is lost, the hydrogen bonds are restored, and the three-dimensional network sedimentation is restored; after the grinding is completed, the anti-skid granules are added in the previous stage, and the liquid polyurea rheological additive BYK-410 is dispersed and added. This component improves the anti-settling of the original paint while ensuring the anti-settling and anti-sagging performance of the facade in the low-viscosity construction state after the addition of component B, and will not affect the viscosity of component A in the production process. After the anti-settling system is built, the anti-skid granules are dispersed and added to component A, and the packaging can be carried out after uniform dispersion.

[0059] During the preparation process of the coating of the present invention, a certain temperature range needs to be maintained to ensure that the coating has good flow operability at this temperature, because as the temperature decreases, the fluidity of the coating decreases, which will bring certain difficulties to the production operation, and to ensure that the coating temperature does not exceed the activation temperature of some key raw materials, causing failure.

[0060] During the construction of the present invention, only the A and B components need to be mixed evenly in proportion, and the mixing ratio is 6:1. No precipitation of anti-skid granules will occur within two hours, and no electric tools are required to stir again during the construction process. No dilution or slight dilution is required, and two thick coats are applied. The anti-skid granules are evenly distributed and wrapped in the paint film. It can be widely used in anti-skid scenes with weather resistance and decoration requirements. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail in the following embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0062] The sources of raw materials used in the present invention are as follows:

[0063]

[0064] A weather-resistant two-component anti-slip coating, consisting of component A and component B, wherein the mass ratio of component A to component B is 6:1;

[0065] The component A is composed of the following raw materials in weight percentage:

[0066]

[0067]

[0068] The component B is composed of the following raw materials in weight percentage:

[0069] Aliphatic polyisocyanate 40%~50%

[0070] Dehydrated butyl ester 49.8%~59.8%

[0071] Dewatering agent 0.1%~0.3%.

[0072] A method for preparing a weather-resistant two-component anti-slip coating, wherein the preparation method of component A comprises the following steps: pre-dispersion: adding the controlled flocculation wetting dispersant, powdered rheological additive polyamide wax, organic bentonite 881-B, rutile titanium dioxide and 1250 kaolin to an acrylic resin base material for pre-dispersion, and adding while dispersing;

[0073] Grinding: Grind the dispersed mixed slurry to a particle size of ≤40 μm, control the sand mill outlet temperature to <60°C during grinding, pre-dispersion speed to 800-1000 rpm, and dispersion time to 30±5 min;

[0074] Dispersion: The ground mixed slurry is dispersed at a dispersion speed of 500-800 rpm, and liquid polyurea rheological additive BYK-410, Changsha Xinxiangrong additive NX-3830S strong defoamer, Hemmings Chemical EFKA-3777 leveling agent, slow-drying solvent PMA and butyl ester are added while dispersing, and the dispersion is continued for 10-15 minutes; finally, quartz sand with a mesh size of 40-80 is added to prevent skid particles, and the dispersion is carried out for 10 minutes. The temperature is maintained at 25-50°C during the dispersion. After the dispersion is completed, the temperature is maintained and the packaging is quickly carried out.

[0075] The method of using weather-resistant two-component anti-slip coating is to mix component A and component B in a mass ratio of 6:1. No anti-slip particles will settle within two hours. Then apply two thick coats.

[0076] Table 1 Raw material components and contents of the weather-resistant two-component anti-slip coating of the present invention

[0077]

[0078]

[0079] The content of each raw material component in Table 1 is %.

[0080] The viscosity and sedimentation conditions of Examples 1 to 6 were tested respectively, as shown in Table 2:

[0081] Evaluation method of coating test items of the present invention:

[0082] Original paint viscosity / KU——GB / T9269-2009 (B method) test evaluation;

[0083] Anti-slip sedimentation of original paint: Storage stability - GB / T6753.3-1986 test evaluation

[0084] Construction settlement after the combination of components A and B: Appearance of the paint film - visual evaluation, whether the anti-slip particles are evenly distributed and whether they are half-wrapped in the paint film; Construction performance - visual evaluation: whether the application is barrier-free, and whether there is obvious accumulation of particles at the bottom after components A and B are mixed and stirred evenly.

[0085] Table 2 Coating performance test of Example 1 to Example 6

[0086]

[0087] Comparative Example

[0088] The components and contents of component A were compared and screened in the comparative example, as shown in Table 3:

[0089] Table 3 is the raw material components and contents of comparative examples 1 to 3 and embodiment 7

[0090]

[0091]

[0092] The viscosity and sedimentation of Comparative Examples 1 to 3 and Example 7 were tested respectively, as shown in Table 4:

[0093] Table 4 Coating performance test of comparative examples 1 to 3 and embodiment 7

[0094]

[0095] Comparative Examples 1 and 2 use deflocculating dispersants A and B to replace controlled flocculating dispersant 904S, respectively, and the rest is the same as Example 7; Comparative Example 3 increases the percentage of controlled flocculating dispersant 904S to 0.8, and the rest is the same as Example 7. As can be seen from Table 4, compared with Example 7 and 3 in which controlled flocculating dispersant 904S is added, the viscosity and anti-settling performance of the original paint of Example 7 and 3 in which controlled flocculating dispersant 904S is better; compared with Example 7 and Comparative Example 3, when controlled flocculating dispersant 904S is added at more than 0.5%, the viscosity and anti-settling performance do not change at 0.8%.

[0096] Component A was further screened, as shown in Table 5.

[0097] Table 5 Raw material components and contents of Comparative Examples 4 to 6

[0098]

[0099]

[0100] Table 6 Coating performance test of comparative example 4 to comparative example 6

[0101]

[0102] Comparative Example 4 uses only bentonite, a rheological additive, which is relatively cheap and can also efficiently improve the viscosity of the system and the anti-settling of the original paint. However, it cannot improve the disadvantage of sedimentation under construction viscosity, and too high viscosity is not conducive to production. Comparative Examples 5 and 6 add polyamide wax T-550F rheological additives, and the anti-settling property of the system construction is greatly improved, but increasing the amount of addition will increase the cost sharply, but the anti-settling property of construction is not greatly improved, so it will be limited to a certain amount and continue to test to further improve the viscosity of the original paint and the construction sedimentation performance.

[0103] Table 7 Comparative Example 7, Comparative Example 8 and Example 8 Component A raw material components and contents

[0104] Raw material name Comparative Example 7 Embodiment 8 Comparative Example 8 Acrylic resin 40 40 40 Controlled flocculation dispersant 904S 0.5 0.5 0.5 Bentonite 1.5 1.5 1.5 Polyamide wax T-550F 1.5 1.5 1.5 Liquid rheological additive BYK-410 / 0.2 0.5 Rutile Titanium Dioxide 24 24 24 1250 Kaolin 10 10 10 Slow drying solvent PMA 3 2.8 2.5 Butyl Ester 10 10 10 40-80 mesh quartz sand 10 10 10 total 100 100 100

[0105] Table 8 Coating performance test of Comparative Example 7, Comparative Example 8 and Example 8

[0106]

[0107] Analysis of Tables VII and VIII shows that the liquid polyurea rheological additive does not affect the shear viscosity of the original paint, and is helpful for the coating production process. After the combination of components A and B, it can significantly improve the anti-settling of the construction. However, the effect is not significantly improved after the addition amount is increased. Considering the production cost, the addition amount of liquid rheological additive BYK-410 is controlled within 0.3%.

[0108] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A weather-resistant two-component anti-slip coating, characterized in that: Composed of component A and component B, the mass ratio of component A to component B is 6:1; The component A is composed of the following raw materials in weight percentage: The component B is composed of the following raw materials in weight percentage: Aliphatic polyisocyanate 40%~50% Dehydrated butyl ester 49.8%~59.8% Dewatering agent 0.1%~0.3%.

2. The weather-resistant two-component anti-slip coating according to claim 1, characterized in that: Composed of component A and component B, the mass ratio of component A to component B is 6:1; The component A is composed of the following raw materials in weight percentage: The component B is composed of the following raw materials in percentage by weight: Aliphatic polyisocyanate 45% Dehydrated butyl ester 54.8% Dewatering agent 0.2%.

3. The weather-resistant two-component anti-slip coating according to claim 1, characterized in that: Composed of component A and component B, the mass ratio of component A to component B is 6:1; The component A is composed of the following raw materials in weight percentage: The component B is composed of the following raw materials in weight percentage: Aliphatic polyisocyanate 50% Dehydrated butyl ester 49.8% Dewatering agent 0.2%.

4. The weather-resistant two-component anti-slip coating according to claim 1, characterized in that: Composed of component A and component B, the mass ratio of component A to component B is 6:1; The component A is composed of the following raw materials in weight percentage: The component B is composed of the following raw materials in weight percentage: Aliphatic polyisocyanate 40% Dehydrated butyl ester 59.8% Dewatering agent 0.2%.

5. The weather-resistant two-component anti-slip coating according to claim 1, characterized in that: Composed of component A and component B, the mass ratio of component A to component B is 6:1; The component A is composed of the following raw materials in weight percentage: The component B is composed of the following raw materials in weight percentage: Aliphatic polyisocyanate 50% Dehydrated butyl ester 49.9% Dewatering agent 0.2%.

6. The weather-resistant two-component anti-slip coating according to claim 1, characterized in that: Composed of component A and component B, the mass ratio of component A to component B is 6:1; The component A is composed of the following raw materials in weight percentage: The component B is composed of the following raw materials in percentage by weight: Aliphatic polyisocyanate 40% Dehydrated butyl ester 59.7% Dewatering agent 0.3%.

7. The weather-resistant two-component anti-slip coating according to claim 1, characterized in that: Composed of component A and component B, the mass ratio of component A to component B is 6:1; The component A is composed of the following raw materials in weight percentage: The component B is composed of the following raw materials in weight percentage: Aliphatic polyisocyanate 45% Dehydrated butyl ester 54.8% Dewatering agent 0.2%.

8. The method for preparing the weather-resistant two-component anti-slip coating according to claims 1 to 7, characterized in that: The preparation method of component A comprises the steps of: pre-dispersion: adding the controlled flocculation wetting dispersant, powdered rheological additive polyamide wax, organic bentonite 881-B, rutile titanium dioxide and 1250 kaolin to an acrylic resin base material for pre-dispersion, adding while dispersing; Grinding: Grinding the dispersed mixed slurry to a particle size of ≤40 μm, and controlling the sand mill outlet temperature to <60°C during grinding; Dispersion: The ground mixed slurry is dispersed at a dispersion speed of 500-800 rpm, and liquid polyurea rheological additive BYK-410, Changsha Xinxiangrong additive NX-3830S strong defoamer, Hemmings Chemical EFKA-3777 leveling agent, slow-drying solvent PMA and butyl ester are added while dispersing, and the dispersion is continued for 10-15 minutes; finally, quartz sand with a mesh size of 40-80 is added to prevent skid particles, and the dispersion is carried out for 10 minutes. The temperature is maintained at 25-50°C during the dispersion. After the dispersion is completed, the temperature is maintained and the packaging is quickly carried out.

9. The method for preparing the weather-resistant two-component anti-slip coating according to claim 8, characterized in that: The pre-dispersion speed is 800-1000 rpm, and the dispersion time is 30±5 min.

10. The method for using the weather-resistant two-component anti-slip coating according to claims 1 to 7, characterized in that: Component A and component B are mixed in a mass ratio of 6:

1. No anti-slip granular material will settle within two hours. Then apply two thick coats.

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