A thin-coated water-based anti-skid coating and preparation method thereof

Abstract

The invention discloses a thin-coated water-based anti-skid coating, which is composed of component A and component B, wherein the component A includes 100 parts by weight of acrylic emulsion, 10-20 parts by weight of modified thermoplastic styrene-butadiene rubber anti-skid particles, 10-30 parts by weight of water and 20-30 parts of functional additives, and the component B is a water-based acrylic curing agent. The interaction between these components of the present invention can produce a synergistic effect and enhance anti-skid performance. The microstructure of mesoporous silica can provide additional surface texture, the elastic deformation and adhesion of thermoplastic styrene-butadiene rubber can increase contact points, the wettability and adhesion of PVA can improve performance under wet conditions, and the joint action of multiple components can provide better anti-skid performance under different conditions.

Description

Technical Field

[0001] The present invention relates to a thin-coat water-based anti-slip coating and a preparation method thereof. Background Art

[0002] With the development of society and people's increasing attention to safety, many places have put forward higher requirements for the anti-slip performance of floor surfaces, especially in wet or slippery environments. Therefore, developing a water-based anti-slip coating that can maintain stable anti-slip performance has become an important technical challenge. In this context, researchers began to seek innovative water-based anti-slip coating technology to meet the needs of the market and users. Water-based anti-slip coatings need to have the following characteristics:

[0003] Excellent grip: Water-based anti-slip coatings should have excellent grip and effectively reduce the risk of slipping in both dry and wet conditions.

[0004] Durability: The coating should be durable and resistant to wear and tear, able to withstand prolonged use and frequent foot traffic without losing its anti-slip properties.

[0005] Environmental protection and health: Water-based coatings are generally more environmentally friendly and friendlier to human health, so researchers may focus on developing non-toxic, low-volatile water-based anti-slip coatings.

[0006] Easy to construct: Lower thickness improves construction efficiency and saves costs. Summary of the invention

[0007] In order to solve the above problems, the present disclosure provides a thin-coat water-based anti-slip coating, which consists of component A and component B, wherein component A includes 100 parts by weight of acrylic emulsion, 10-20 parts by weight of modified thermoplastic butadiene rubber anti-slip particles, 10-30 parts by weight of water and 20-30 parts of functional additives, and component B is a water-based acrylic curing agent.

[0008] The functional additive is selected from one or more of a defoamer, a wetting and dispersing agent, a pigment, a leveling agent, and a bactericide.

[0009] The modified thermoplastic butyl rubber anti-skid particles are prepared in the following manner:

[0010] Dissolving 100 parts by weight of thermoplastic styrene butadiene rubber in a mixed solution of 100-150 parts by weight of chloroform and propylene glycol (mass ratio 1:1-2) to obtain a thermoplastic styrene butadiene rubber solution, dispersing 10-30 parts by weight of mesoporous silica in the thermoplastic styrene butadiene rubber solution, and uniformly stirring the dispersion at 500-900 rpm for 6-12 hours to obtain a thermoplastic styrene butadiene rubber mixed solution; drying the thermoplastic styrene butadiene rubber mixed solution to prepare a 0.1-3 mm thin sheet; and obtaining a thermoplastic styrene butadiene rubber sheet;

[0011] Dissolving 100 parts by weight of PVA in 100-150 parts by weight of a mixed solution of acetone and ethyl ether (mass ratio 1:1-3) to obtain a PVA solution;

[0012] 100 parts by weight of thermoplastic butyl rubber sheet is soaked in 200-400 parts by weight of PVA solution for 24-48 hours, rinsed with deionized water, and then dried in a natural environment to obtain a dry thermoplastic butyl rubber sheet. The dry thermoplastic butyl rubber sheet is crushed to make anti-skid particles with a particle size range of 0.1-0.5 mm to obtain modified thermoplastic butyl rubber anti-skid particles.

[0013] The mass content of styrene is 21-24%.

[0014] The viscosity of the PVA is 4.6-5.4, and the molar alcoholysis degree is 86.5-89%.

[0015] The synthesis steps of the mesoporous silica are:

[0016] The nonionic surfactant Pluronic F127 was dissolved in a 7M hydrochloric acid solution so that the content of the nonionic surfactant reached 10 g / L. Tetraethoxysilane was added to the hydrochloric acid solution at 900 rpm, and the white precipitate was filtered after sufficient reaction. The solvent and the reaction by-products were evaporated at room temperature to obtain a dry sample, and the dry sample was calcined at 500° C. for 12 hours to obtain mesoporous silica.

[0017] Mesoporous silica has a high surface area and porous structure, which can form tiny particles in coatings or materials. These particles can increase the surface roughness of the coating or material, thereby increasing the friction between the contact surface.

[0018] As an elastomer, thermoplastic styrene butadiene rubber has excellent elastic deformation properties and can deform under the action of external forces, increase the contact points with the contact surface, and improve the friction coefficient. At the same time, thermoplastic styrene butadiene rubber has good adhesion properties and can be combined with other components (such as mesoporous silica and PVA) and substrates to enhance the stability of the anti-slip composition.

[0019] PVA has strong water adsorption and wettability, and can absorb moisture in the surrounding environment under wet conditions to form a thin water film. This can improve the contact performance of the coating or material with the wet surface, thereby increasing the grip of the coating. In addition, PVA can also interact with other components to enhance the cohesion and adhesion of the anti-slip composition.

[0020] The interaction between these components can produce a synergistic effect and enhance the anti-slip performance. The microstructure of mesoporous silica can provide additional surface texture, the elastic deformation and adhesion properties of thermoplastic butadiene rubber can increase the contact points, and the wettability and adhesion of PVA can improve the performance under wet conditions. The combined effect of multiple components can provide better anti-slip performance under different conditions.

[0021] The above and other features, aspects and advantages of the present application will be more readily understood with reference to the following detailed description. Specific implementation plan

[0022] Sources:

[0023] Thermoplastic butadiene rubber: Kraton D1116K.

[0024] Polyvinyl alcohol: Japan Kuraray PVA-205, PVA-217.

[0025] Hydroxyl-containing acrylic emulsion: Deyude CX-822.

[0026] Curing agent: Imprafix 2794XP water-based curing agent from Covestro.

[0027] Other materials were commercially available.

[0028] The embodiment of the present invention provides a thin-coat water-based anti-skid coating, which consists of component A and component B. Component A includes 100 parts by weight of acrylic emulsion, 10-20 parts by weight of modified thermoplastic butyl rubber anti-skid particles, 10-30 parts by weight of water and 20-30 parts of functional additives, and component B is a water-based acrylic curing agent.

[0029] The functional additive is selected from one or more of a defoamer, a wetting and dispersing agent, a pigment, a leveling agent, and a bactericide.

[0030] The synthesis steps of the mesoporous silica are:

[0031] The nonionic surfactant Pluronic F127 was dissolved in a 7M hydrochloric acid solution so that the content of the nonionic surfactant reached 10 g / L. Tetraethoxysilane was added to the hydrochloric acid solution at 900 rpm, and the white precipitate was filtered after sufficient reaction. The solvent and the reaction by-products were evaporated at room temperature to obtain a dry sample, and the dry sample was calcined at 500° C. for 12 hours to obtain mesoporous silica.

[0032] The modified thermoplastic butyl rubber anti-skid particles A:

[0033] Dissolving 100 parts by weight of thermoplastic styrene butadiene rubber in 100 parts by weight of a mixed solution of chloroform and propylene glycol (mass ratio 1:2) to obtain a thermoplastic styrene butadiene rubber solution, dispersing 30 parts by weight of mesoporous silica in the thermoplastic styrene butadiene rubber solution, and uniformly stirring the dispersion at 900 rpm for 6 hours to obtain a thermoplastic styrene butadiene rubber mixed solution; drying the thermoplastic styrene butadiene rubber mixed solution to prepare a 0.1-3 mm thin sheet; and obtaining a thermoplastic styrene butadiene rubber sheet;

[0034] 100 parts by weight of PVA-205 was dissolved in 100 parts by weight of a mixed solution of acetone and ether (mass ratio 1:2) to obtain a PVA solution;

[0035] 100 parts by weight of thermoplastic butyl rubber sheet is soaked in 400 parts by weight of PVA solution for 48 hours, rinsed with deionized water, and then dried in a natural environment to obtain a dry thermoplastic butyl rubber sheet. The dry thermoplastic butyl rubber sheet is crushed to make anti-skid particles with a particle size range of 0.1-0.5 mm to obtain modified thermoplastic butyl rubber anti-skid particles.

[0036] The following dry film thickness and wet friction coefficient are the average values ​​obtained from 15 tests.

[0037] Example 1

[0038] The water-based anti-skid coating is composed of component A and component B, wherein component A includes 100 parts by weight of acrylic emulsion, 20 parts by weight of modified thermoplastic butyl rubber anti-skid particles A, 20 parts by weight of water and 20 parts of functional additives, and component B is a water-based acrylic curing agent. When the dry film thickness obtained by spraying is 1.22 mm, the wet friction coefficient is 0.78, and when the dry film thickness obtained by spraying is 0.65 mm, the wet friction coefficient is 0.72.

[0039] Example 2

[0040] The water-based anti-skid coating is composed of component A and component B, wherein component A includes 100 parts by weight of acrylic emulsion, 10 parts by weight of modified thermoplastic butyl rubber anti-skid particles A, 30 parts by weight of water and 20 parts of functional additives, and component B is a water-based acrylic curing agent. When the dry film thickness obtained by spraying is 1.12 mm, the wet friction coefficient is 0.74, and when the dry film thickness obtained by spraying is 0.7 mm, the wet friction coefficient is 0.73.

[0041] Example 3

[0042] The water-based anti-skid coating is composed of component A and component B, wherein component A includes 100 parts by weight of acrylic emulsion, 20 parts by weight of modified thermoplastic butyl rubber anti-skid particles A, 10 parts by weight of water and 30 parts of functional additives, and component B is a water-based acrylic curing agent. When the dry film thickness obtained by spraying is 1.18 mm, the wet friction coefficient is 0.77, and when the dry film thickness obtained by spraying is 0.76 mm, the wet friction coefficient is 0.77.

[0043] Comparative Example 1

[0044] Similar to Example 1, in the preparation process of the modified thermoplastic butyl rubber anti-skid particles A, the PVA is PVA-217. When the dry film thickness obtained by spraying is 0.76 mm, the wet friction coefficient is 0.64.

[0045] Comparative Example 2

[0046] The same as in Example 1, the modified thermoplastic butyl rubber anti-skid particles A were replaced by thermoplastic butyl rubber Kraton D1116K. When the dry film thickness obtained by spraying was 0.77 mm, the wet friction coefficient was 0.63.

[0047] Comparative Example 3

[0048] Similar to Example 1, mesoporous silica was replaced with calcium carbonate filler during the preparation of modified thermoplastic butyl rubber anti-skid particles A. When the dry film thickness obtained by spraying was 0.82 mm, the wet friction coefficient was 0.66.

[0049] Comparative Example 4

[0050] Similar to Example 1, the PVA solution soaking step is not used in the preparation process of the modified thermoplastic butyl rubber anti-skid particles A. When the dry film thickness obtained by spraying is 0.81 mm, the wet friction coefficient is 0.61.

[0051] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thin-coat water-based anti-slip coating, characterized in that: The water-based anti-skid coating is composed of component A and component B, wherein component A includes 100 parts by weight of acrylic emulsion, 10-20 parts by weight of modified thermoplastic styrene-butadiene rubber anti-skid particles, 10-30 parts by weight of water and 20-30 parts of functional additives, and component B is a water-based acrylic curing agent; The modified thermoplastic styrene-butadiene rubber anti-skid particles are prepared in the following manner: Dissolving 100 parts by weight of thermoplastic styrene butadiene rubber in a mixed solution of 100-150 parts by weight of chloroform and propylene glycol to obtain a thermoplastic styrene butadiene rubber solution, wherein the mass ratio of chloroform to propylene glycol is 1:1-2; dispersing 10-30 parts by weight of mesoporous silica in the thermoplastic styrene butadiene rubber solution, and uniformly stirring the dispersion at 500-900 rpm for 6-12 hours to obtain a thermoplastic styrene butadiene rubber mixed solution; drying the thermoplastic styrene butadiene rubber mixed solution to form a 0.1-3 mm thin sheet; and obtaining a thermoplastic styrene butadiene rubber sheet; Dissolving 100 parts by weight of PVA in a mixed solution of 100-150 parts by weight of acetone and ether to obtain a PVA solution, wherein the mass ratio of acetone to ether is 1:1-3; 100 parts by weight of a thermoplastic styrene butadiene rubber sheet is soaked in 200-400 parts by weight of a PVA solution for 24-48 hours, washed with deionized water, and then dried in a natural environment to obtain a dry thermoplastic styrene butadiene rubber sheet, and the dry thermoplastic styrene butadiene rubber sheet is crushed to prepare anti-skid particles with a particle size range of 0.1-0.5 mm to obtain modified thermoplastic styrene butadiene rubber anti-skid particles; The functional additive is selected from one or more of a defoamer, a wetting and dispersing agent, a pigment, a leveling agent, and a bactericide; The PVA is Japanese Kuraray PVA-205.

2. A thin-coat water-based anti-slip coating according to claim 1, characterized in that: The mass content of styrene in the thermoplastic styrene-butadiene rubber is 21-24%.

3. A thin-coat water-based anti-slip coating according to claim 1, characterized in that: The synthesis steps of the mesoporous silica are: A nonionic surfactant is dissolved in a hydrochloric acid solution, tetraethoxysilane is added to the hydrochloric acid solution at 900 rpm, a white precipitate is filtered after sufficient reaction, the solvent and reaction by-products are evaporated at room temperature to obtain a dry sample, and the dry sample is calcined at 400-500° C. for 12-24 hours to obtain mesoporous silica.

4. A method for preparing a thin-coat water-based anti-skid coating according to claim 1, characterized in that: The water-based anti-skid coating consists of component A and component B, wherein component A is prepared by uniformly mixing 100 parts by weight of acrylic emulsion, 10-20 parts by weight of modified thermoplastic styrene-butadiene rubber anti-skid particles, 10-30 parts by weight of water and 20-30 parts of functional additives, and component B is a water-based acrylic curing agent.

5. The method for preparing a thin-coat water-based anti-skid coating according to claim 4, characterized in that: The synthesis steps of the mesoporous silica are: A nonionic surfactant is dissolved in a hydrochloric acid solution, tetraethoxysilane is added to the hydrochloric acid solution at 900 rpm, a white precipitate is filtered after sufficient reaction, the solvent and reaction by-products are evaporated at room temperature to obtain a dry sample, and the dry sample is calcined at 400-500° C. for 12-24 hours to obtain mesoporous silica.