Antiskid coating as well as preparation method and application thereof

Abstract

The invention discloses an antiskid coating as well as a preparation method and application thereof, and relates to the technical field of antiskid coatings. The anti-skid coating comprises a component A and a component B, the component A comprises anti-skid modified polyurethane-epoxy resin, and the component B is an amine curing agent; the preparation method of the antiskid modified polyurethane-epoxy resin comprises the following steps: mixing antiskid particles, amino silane, ethanol and water to obtain modified antiskid particles; reacting the modified anti-skid particles, diisocyanate and a solvent in a protective atmosphere to obtain anti-skid modified diisocyanate; the preparation method comprises the following steps: reacting epoxy resin, polymer dihydric alcohol, diisocyanate, antiskid modified diisocyanate, a catalyst and a solvent in a protective atmosphere, and then sequentially adding a chain extender, a neutralizer, water and ethidene diamine for reaction to obtain the antiskid modified polyurethane-epoxy resin. The invention solves the problems that the anti-skid particles in the existing anti-skid paint are easy to fall off and the binding property with the paint emulsion is poor.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-skid coatings, and in particular to an anti-skid coating and a preparation method and application thereof. Background Art

[0002] In daily life, anti-skid is an important task, so anti-skid coatings are widely used in various workplaces and living places. Anti-skid coatings mainly contain anti-skid particles, film-forming resins and other substances. Anti-skid particles are additives to improve the anti-skid performance of the paint film, giving the paint film anti-skid ability to prevent people from slipping and falling; film-forming resins have the function of fixing anti-skid particles and protecting the base material from damage.

[0003] However, the anti-skid particles added to the anti-skid coatings currently have a particle size of several millimeters, which is relatively large and has poor compatibility with the resin matrix emulsion. After a period of use, the anti-skid particles are easy to fall off, which seriously affects the anti-skid effect. If the amount of anti-skid particles added is too large, it will also affect the film-forming effect. On this basis, patent CN113214710A discloses a water-based anti-skid coating, including component A and component B. By mass, the component A includes 8-10 parts of water, 35-40 parts of acrylic emulsion, 30-35 parts of anti-skid particles with a particle size range of 0.2-2mm, and 15-30 parts of functional additives, and the component B is a water-based acrylic curing agent; the functional additives include 0.5-2 parts of suspending agent, 1-5 parts of emulsifier, and 4-5 parts of organic polymer anti-skid additives; the organic polymer anti-skid additives are used to increase the viscosity and bonding between the acrylic emulsion and the anti-skid particles. This technology uses functional additives to combine anti-skid particles in emulsion coatings. The anti-skid particles are still physically dispersed in the coating. The binding is relatively high at the moment, but after a certain period of use, there is still the problem of anti-skid particles falling off and causing anti-skid failure. Therefore, how to improve the binding force between anti-skid particles and resin emulsion and improve anti-skid performance is an urgent problem to be solved. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an anti-skid coating and a preparation method and application thereof. The present invention uses aminosilane to modify anti-skid particles, and then introduces the anti-skid particles into a polyurethane emulsion through the reaction of diisocyanate and amino groups. The anti-skid particles are combined with the resin through chemical bonds, thereby improving compatibility and anti-skid performance. In addition, epoxy resin is added during the formation of the polyurethane prepolymer, and the polyurethane and epoxy resin can form a polymer interpenetrating network structure, so that the coating film has good mechanical properties. In addition, the problem that the anti-skid particles in the existing anti-skid coating are easy to fall off and have poor bonding performance with the coating emulsion is solved.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] In a first aspect, the present invention provides a method for preparing an anti-slip modified polyurethane-epoxy resin, comprising the following steps:

[0007] (1) mixing anti-skid particles, aminosilane, ethanol and water to obtain modified anti-skid particles;

[0008] (2) reacting the modified anti-skid particles, diisocyanate, and solvent under a protective atmosphere to obtain an anti-skid modified diisocyanate;

[0009] (3) reacting epoxy resin, polymer diol, diisocyanate, anti-slip modified diisocyanate, catalyst and solvent under protective atmosphere, then sequentially adding chain extender for chain extension, adding neutralizer for neutralization, and then adding water and ethylenediamine for emulsification to obtain anti-slip modified polyurethane-epoxy resin;

[0010] In step (1), the anti-slip particles include nano zinc oxide, silicon dioxide, and mica.

[0011] The present invention firstly uses aminosilane to modify the anti-skid particles, and the silanol generated by the hydrolysis of aminosilane reacts with the hydroxyl group on the surface of the anti-skid particles, and then the anti-skid particles are introduced into the polyurethane emulsion system through the reaction of diisocyanate and amino group. The anti-skid particles are combined with the resin through chemical bonds, rather than simple physical dispersion, which greatly improves the compatibility of the anti-skid particles with the resin system, avoids the falling of the anti-skid particles, and effectively improves the anti-skid performance. In addition, the present invention adds epoxy resin in the process of forming the polyurethane prepolymer, and the polyurethane and the epoxy resin can form a polymer interpenetrating network structure, so that the coating has good mechanical properties. At the same time, the anti-skid particles are wrapped by the interpenetrating network structure, reducing the risk of falling off, and making the coating performance more stable.

[0012] Preferably, the mass ratio of the nano zinc oxide, silicon dioxide and mica is (1-3): (1-5): (1-2), more preferably (2-3): (2-4): (1-2), and even more preferably 2:4:1.

[0013] Preferably, the particle size of the nano zinc oxide is 100-200 nm, the particle size of the silicon dioxide is 0.1-5 μm, and the particle size of the mica is 0.01-1 mm.

[0014] More preferably, the particle size of the silicon dioxide is 1-5 μm, more preferably 3-5 μm; the particle size of the mica is 0.05-1 mm, more preferably 0.1-1 mm.

[0015] The present invention uses nano-sized zinc oxide, micron-sized silicon dioxide, and millimeter-sized mica as anti-skid particles. The micro-(milli)-nano-sized composite particles improve the ability to bind to the substrate on the one hand, and improve the friction force on the surface of the coating film on the other hand, thereby improving the anti-skid performance. Moreover, the flaky mica improves the water resistance and corrosion resistance through flaky lamination, thereby extending the life of the coating film.

[0016] Preferably, in step (1), the aminosilane includes at least one of γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane and N-phenyl-γ-aminopropyltrimethoxysilane.

[0017] More preferably, the aminosilane is γ-aminopropyltrimethoxysilane or γ-aminopropyltriethoxysilane, more preferably γ-aminopropyltrimethoxysilane.

[0018] Preferably, in step (1), the mass ratio of the anti-slip particles to the aminosilane is (5-15):(3-10), more preferably (7-12):(5-8), and even more preferably 10:7.

[0019] Preferably, in step (1), the usage ratio of aminosilane, ethanol and water is 3-10 g: 50-80 mL: 50-160 mL, more preferably 5-8 g: 50-70 mL: 80-150 mL, and more preferably 7 g: 50 mL: 100 mL.

[0020] Preferably, the mixing temperature in step (1) is 30-60°C, more preferably 35-50°C, and more preferably 40°C; the mixing time is 3-8h, more preferably 4-6h, and more preferably 4h.

[0021] Preferably, in step (2), the mass ratio of the modified anti-slip particles to diisocyanate is (1-5):(2-10), more preferably (3-5):(4-7), and even more preferably 5:6.

[0022] Preferably, in step (2), the ratio of the diisocyanate to the solvent is 2-10 g:20-70 mL, more preferably 4-7 g:30-60 mL, and more preferably 6 g:50 mL.

[0023] Preferably, in step (2), the diisocyanate is isophorone diisocyanate and / or toluene diisocyanate, more preferably isophorone diisocyanate or toluene diisocyanate, and more preferably isophorone diisocyanate.

[0024] Preferably, the solvent in step (2) is N,N-dimethylformamide.

[0025] Preferably, the protective atmosphere in step (2) is nitrogen.

[0026] Preferably, the reaction temperature in step (2) is 50-70°C, more preferably 55-65°C, more preferably 60°C; the reaction time is 1-5h, more preferably 1-3h, more preferably 2h.

[0027] Preferably, in step (3), the mass ratio of the epoxy resin, polymer diol, diisocyanate and modified diisocyanate is (2-7):(1-8):(5-10):(1-5), more preferably (3-6):(4-7):(6-8):(3-5), and more preferably 5:5:7:4.

[0028] Preferably, in step (3), the usage ratio of the polymer diol, catalyst and solvent is 1-8g:0.05-0.1g:50-100mL, more preferably 4-7g:0.06-0.08g:80-100mL, and more preferably 5g:0.07g:100mL.

[0029] Preferably, in step (3), the usage ratio of the polymer diol, chain extender, neutralizer, ethylenediamine and water is 1-8g: 0.01-0.5g: 0.1-0.7g: 1-6mL: 30-150mL, more preferably 4-7g: 0.1-0.4g: 0.3-0.6g: 2-5mL: 70-120mL, and more preferably 5g: 0.2g: 0.5g: 4mL: 100mL.

[0030] Preferably, in step (3), the epoxy resin is E-44 epoxy resin and / or E-51 epoxy resin, more preferably E-44 epoxy resin or E-51 epoxy resin, and more preferably E-44 epoxy resin.

[0031] Preferably, in step (3), the polymer diol is polytetrahydrofuran diol.

[0032] Preferably, in step (3), the diisocyanate is isophorone diisocyanate and / or toluene diisocyanate, more preferably isophorone diisocyanate or toluene diisocyanate, and more preferably isophorone diisocyanate.

[0033] Preferably, in step (3), the catalyst is dibutyltin dilaurate.

[0034] Preferably, in step (3), the solvent is N,N-dimethylformamide.

[0035] Preferably, in step (3), the protective atmosphere is nitrogen.

[0036] Preferably, in step (3), the chain extender is 1,4-butanediol.

[0037] Preferably, in step (3), the neutralizing agent is triethylamine.

[0038] Preferably, in step (3), the method for reacting the epoxy resin, polymer diol, diisocyanate, anti-slip modified diisocyanate, catalyst and solvent under a protective atmosphere is specifically: reacting the epoxy resin, polymer diol, diisocyanate and anti-slip modified diisocyanate under a protective atmosphere, and then adding the catalyst and solvent to continue the reaction; the temperature of the two reactions is independently preferably 50-70°C, further preferably 55-70°C, and more preferably 55°C; the time of the two reactions is independently preferably 1-5h, further preferably 2-3h, and more preferably 2h.

[0039] Preferably, in step (3), the chain extension temperature is 70-90°C, more preferably 75-85°C, more preferably 80°C; the chain extension time is 1-2h, more preferably 1-1.5h, more preferably 1h.

[0040] Preferably, in step (3), the neutralization temperature is 50-60°C, more preferably 50-55°C, and more preferably 50°C; the neutralization time is 30-90 min, more preferably 35-60 min, and more preferably 40 min.

[0041] Preferably, in step (3), the emulsification temperature is 25° C.; the emulsification time is 1-2 h, more preferably 1-1.5 h, and more preferably 1 h.

[0042] In a second aspect, the present invention further provides an anti-slip coating, comprising component A and component B, wherein component A comprises the following raw materials in parts by weight:

[0043] Anti-slip modified polyurethane-epoxy resin 70-100 parts; solvent 5-30 parts; defoamer 1-5 parts; dispersant 0.1-3 parts; filler 10-30 parts;

[0044] The B component is an amine curing agent.

[0045] The present invention uses anti-skid modified polyurethane-epoxy resin as the film-forming resin of the anti-skid coating, and adds fillers, dispersants, defoamers and other additives. The obtained coating film has strong bonding with the substrate, high mechanical properties, high toughness, and also has good stability and anti-skid performance.

[0046] Preferably, the solvent is ethylene glycol diacetate.

[0047] Preferably, the defoaming agent is a polysiloxane defoaming agent.

[0048] Preferably, the dispersant is BYK-163.

[0049] Preferably, the filler includes titanium dioxide and / or talc, more preferably titanium dioxide or talc, and more preferably titanium dioxide.

[0050] Preferably, the amine curing agent is cashew nut shell oil modified phenolic amine.

[0051] The present invention does not limit the source of the amine curing agent, and it can be selected by conventional methods by those skilled in the art.

[0052] Preferably, the mass ratio of component A to component B is (5-10):1, more preferably (7-9):1, and even more preferably 8:1.

[0053] In a third aspect, the present invention further provides a method for preparing an anti-slip coating, comprising the following steps:

[0054] The anti-skid modified polyurethane-epoxy resin and the solvent are mixed evenly, and then fillers, dispersants and defoamers are added to obtain component A; finally, component A and component B are packaged separately to obtain the anti-skid coating.

[0055] In a fourth aspect, the present invention also provides an application of an anti-slip coating in preventing indoor floors from slipping.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] The present invention first uses aminosilane to modify the anti-skid particles, and the silanol generated by the hydrolysis of aminosilane reacts with the hydroxyl group on the surface of the anti-skid particles. Then, the anti-skid particles are introduced into the polyurethane emulsion system through the reaction of diisocyanate and amino group. The anti-skid particles are combined with the resin through chemical bonds, rather than simple physical dispersion, which greatly improves the compatibility of the anti-skid particles with the resin system, avoids the falling of the anti-skid particles, and effectively improves the anti-skid performance. In addition, the present invention adds epoxy resin in the process of forming the polyurethane prepolymer, and the polyurethane and the epoxy resin can form a polymer interpenetrating network structure, so that the coating has good mechanical properties. At the same time, the anti-skid particles are wrapped by the interpenetrating network structure, reducing the risk of falling off, and making the coating performance more stable. DETAILED DESCRIPTION

[0058] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments, but the protection scope and implementation methods of the present invention are not limited thereto.

[0059] Unless otherwise specified, the materials and reagents used in the following examples are commercially available.

[0060] Example 1

[0061] This embodiment discloses an anti-slip coating, comprising component A and component B in a mass ratio of 8:1, wherein component A comprises the following raw materials in parts by mass:

[0062] 85 parts of anti-slip modified polyurethane-epoxy resin; 20 parts of ethylene glycol diacetate; 3 parts of polysiloxane defoamer; 2 parts of BYK-163; 17 parts of titanium dioxide;

[0063] Component B is an amine curing agent, cashew nut shell oil modified phenolic amine.

[0064] This embodiment also discloses a method for preparing an anti-slip coating, comprising the following steps:

[0065] (1) Anti-skid particles, γ-aminopropyltrimethoxysilane, ethanol, and water were mixed in a ratio of 10 g: 7 g: 50 mL: 100 mL, and reacted at 40° C. for 4 h to obtain modified anti-skid particles;

[0066] The anti-skid particles include nano zinc oxide, silicon dioxide and mica in a mass ratio of 2:4:1, and the particle size of the nano zinc oxide is 100-200nm, the particle size of the silicon dioxide is 3-5μm, and the particle size of the mica is 0.1-1mm.

[0067] (2) The modified anti-skid particles, isophorone diisocyanate, and N,N-dimethylformamide were uniformly mixed in a ratio of 5 g:6 g:50 mL, and reacted at 60° C. for 2 h under a nitrogen atmosphere to obtain an anti-skid modified diisocyanate.

[0068] (3) E-44 epoxy resin, polytetramethylene glycol, isophorone diisocyanate, and anti-slip modified diisocyanate were mixed uniformly in a mass ratio of 5:5:7:4, reacted at 55°C for 2 hours under a nitrogen atmosphere, and then dibutyltin dilaurate and N,N-dimethylformamide were added to continue the reaction at 70°C for 2 hours; then 1,4-butanediol was added to extend the chain at 80°C for 1 hour; then triethylamine was added to neutralize at 50°C for 40 minutes; then water and ethylenediamine were added to emulsify at 25°C for 1 hour to obtain an anti-slip modified polyurethane-epoxy resin;

[0069] Among them, the usage ratio of polytetrahydrofuran diol, dibutyltin dilaurate, N,N-dimethylformamide, 1,4-butanediol, triethylamine, ethylenediamine and water is 5g:0.07g:100mL:0.2g:0.5g:4mL:100mL.

[0070] (4) Mix and stir the anti-slip modified polyurethane-epoxy resin and ethylene glycol diacetate according to the formula, then add titanium dioxide, BYK-163, and polysiloxane defoamer in sequence and mix and stir to obtain component A; finally, independently package component A and component B to obtain the anti-slip coating.

[0071] Example 2

[0072] An anti-slip coating comprises a component A and a component B in a mass ratio of 9:1, wherein the component A comprises the following raw materials in parts by mass:

[0073] 90 parts of anti-slip modified polyurethane-epoxy resin; 10 parts of ethylene glycol diacetate; 2 parts of polysiloxane defoamer; 0.5 parts of BYK-163; 12 parts of titanium dioxide;

[0074] Component B is an amine curing agent, cashew nut shell oil modified phenolic amine.

[0075] The preparation method of the anti-slip coating is the same as that of Example 1, except that the anti-slip particles in step (1) include nano zinc oxide, silicon dioxide, and mica in a mass ratio of 2:4:1, and the particle size of the nano zinc oxide is 100-200 nm, the particle size of the silicon dioxide is 3-5 μm, and the particle size of the mica is 0.1-1 mm;

[0076] In step (2), the mass ratio of the modified anti-skid particles to isophorone diisocyanate is 1 g:6 g;

[0077] In step (3), the mass ratio of E-44 epoxy resin, polytetramethylene glycol, isophorone diisocyanate and anti-slip modified diisocyanate is 3:7:9:4.

[0078] Example 3

[0079] An anti-slip coating comprises a component A and a component B in a mass ratio of 7:1, wherein the component A comprises the following raw materials in parts by mass:

[0080] 75 parts of anti-slip modified polyurethane-epoxy resin; 20 parts of ethylene glycol diacetate; 4 parts of polysiloxane defoamer; 1 part of BYK-163; 10 parts of titanium dioxide; 10 parts of talc;

[0081] Component B is an amine curing agent, cashew nut shell oil modified phenolic amine.

[0082] The preparation method of the anti-slip coating is the same as that of Example 1, except that in step (1), the anti-slip particles include nano zinc oxide, silicon dioxide, and mica in a mass ratio of 3:1:2, and the particle size of the nano zinc oxide is 100-200 nm, the particle size of the silicon dioxide is 3-5 μm, and the particle size of the mica is 0.1-1 mm; the aminosilane is N-phenyl-γ-aminopropyltrimethoxysilane, and the mass ratio of the anti-slip particles to the aminosilane is 10 g:3 g;

[0083] In step (2), the mass ratio of the modified anti-slip particles to isophorone diisocyanate is 4 g:7 g;

[0084] In step (3), the mass ratio of E-44 epoxy resin, polytetramethylene glycol, isophorone diisocyanate and anti-slip modified diisocyanate is 2:5:5:4.

[0085] Example 4

[0086] An anti-slip coating comprises a component A and a component B in a mass ratio of 5:1, wherein the component A comprises the following raw materials in parts by mass:

[0087] 100 parts of anti-slip modified polyurethane-epoxy resin; 30 parts of ethylene glycol diacetate; 1 part of polysiloxane defoamer; 0.1 parts of BYK-163; 20 parts of talc;

[0088] Component B is an amine curing agent, cashew nut shell oil modified phenolic amine.

[0089] The preparation method of the anti-slip coating is the same as that of Example 1, except that the anti-slip particles in step (1) include nano zinc oxide, silicon dioxide, and mica in a mass ratio of 1:1:1, and the particle size of the nano zinc oxide is 100-200 nm, the particle size of the silicon dioxide is 3-5 μm, and the particle size of the mica is 0.1-0.5 mm; the mass ratio of the anti-slip particles to the aminosilane is 5 g:3 g;

[0090] In step (2), the mass ratio of the modified anti-slip particles to isophorone diisocyanate is 5 g:2 g;

[0091] In step (3), the diisocyanate is toluene diisocyanate, and the mass ratio of E-44 epoxy resin, polytetramethylene glycol, toluene diisocyanate and anti-slip modified diisocyanate is 7:1:6:2.

[0092] Comparative Example 1

[0093] An anti-slip coating comprises a component A and a component B in a mass ratio of 8:1, wherein the component A comprises the following raw materials in parts by mass:

[0094] 5 parts of anti-skid particles (the composition is the same as in Example 1), 80 parts of polyurethane-epoxy resin, 20 parts of ethylene glycol diacetate, 3 parts of polysiloxane defoamer, 2 parts of BYK-163, and 17 parts of titanium dioxide;

[0095] Component B is an amine curing agent, cashew nut shell oil modified phenolic amine.

[0096] The method for preparing the anti-slip coating is different from that of Example 1 in that steps (1) and (2) are not performed, and in step (3), the anti-slip modified diisocyanate is replaced by isophorone diisocyanate.

[0097] Comparative Example 2

[0098] An anti-slip coating comprises a component A and a component B in a mass ratio of 8:1, wherein the component A comprises the following raw materials in parts by mass:

[0099] 65 parts of anti-slip modified polyurethane; 20 parts of epoxy resin; 20 parts of ethylene glycol diacetate; 3 parts of polysiloxane defoamer; 2 parts of BYK-163; 17 parts of titanium dioxide;

[0100] Component B is an amine curing agent, cashew nut shell oil modified phenolic amine.

[0101] The difference between the method for preparing the anti-slip coating and that in Example 1 is that in step (3), the E-44 epoxy resin is replaced by polytetramethylene glycol.

[0102] Comparative Example 3

[0103] An anti-slip coating comprises a component A and a component B in a mass ratio of 8:1, wherein the component A comprises the following raw materials in parts by mass:

[0104] 5 parts of modified anti-skid particles (the composition of the anti-skid particles is the same as that in Example 1); 60 parts of polyurethane, 20 parts of epoxy resin, 20 parts of ethylene glycol diacetate, 3 parts of polysiloxane defoamer, 2 parts of BYK-163, and 17 parts of titanium dioxide;

[0105] Component B is an amine curing agent, cashew nut shell oil modified phenolic amine.

[0106] The method for preparing the anti-slip coating is different from that of Example 1 in that step (2) is not performed, and in step (3), the E-44 epoxy resin is replaced by polytetramethylene glycol, and the anti-slip modified diisocyanate is replaced by isophorone diisocyanate.

[0107] Comparative Example 4

[0108] The difference between the method for preparing the anti-slip coating and that of Example 1 is that in step (1), the anti-slip particles are nano zinc oxide with a size of 100-200 nm.

[0109] The anti-slip coatings prepared in the above Examples 1-4 and Comparative Examples 1-4 were mixed according to component A and component B, respectively, and then applied to a substrate. The obtained coating films of the same thickness were subjected to the following conventional tests. The results are shown in Table 1.

[0110] Table 1

[0111]

[0112] As can be seen from Table 1, the anti-slip particle composition of the present invention has good anti-slip performance, and the BPN value can reach above 80. Even if the anti-slip particles are added in different ways in the resin system as shown in Comparative Examples 1-3, a BPN value of above 70 can be achieved. As shown in Comparative Example 4, only nano zinc oxide is used as the anti-slip particles, and the BPN value drops to 67, indicating that the anti-slip particle composition of the present invention has good anti-slip performance.

[0113] According to Comparative Example 1, the physical mixing of anti-slip particles and resin seriously affects the mechanical properties of the coating film, and the interpenetrating network structure formed by polyurethane and epoxy resin in the resin system affects both the anti-slip performance and the mechanical properties.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A method for preparing a non-slip modified polyurethane-epoxy resin, characterized in that: The following steps are involved: (1) mixing anti-skid particles, aminosilane, ethanol and water to obtain modified anti-skid particles; (2) reacting the modified anti-skid particles, diisocyanate, and solvent under a protective atmosphere to obtain an anti-skid modified diisocyanate; (3) reacting epoxy resin, polymer diol, diisocyanate, anti-slip modified diisocyanate, catalyst and solvent under protective atmosphere, then sequentially adding chain extender for chain extension, adding neutralizer for neutralization, and then adding water and ethylenediamine for emulsification to obtain anti-slip modified polyurethane-epoxy resin; In step (1), the anti-slip particles include nano zinc oxide, silicon dioxide, and mica.

2. The method for preparing the anti-slip modified polyurethane-epoxy resin according to claim 1, characterized in that: The mass ratio of the nano zinc oxide, silicon dioxide and mica is (1-3): (1-5): (1-2).

3. The method for preparing the anti-slip modified polyurethane-epoxy resin according to claim 1, characterized in that: The particle size of the nano zinc oxide is 100-200 nm, the particle size of the silicon dioxide is 0.1-5 μm, and the particle size of the mica is 0.01-1 mm.

4. The method for preparing the anti-slip modified polyurethane-epoxy resin according to claim 1, characterized in that: Step (1) includes at least one of (a) to (d): (a) the aminosilane comprises at least one of γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane and N-phenyl-γ-aminopropyltrimethoxysilane; (b) the mass ratio of the anti-slip particles to the aminosilane is (5-15):(3-10); (c) the aminosilane, ethanol and water are used in a ratio of 3-10 g: 50-80 mL: 50-160 mL; (d) The mixing temperature is 30-60°C and the mixing time is 3-8h.

5. The method for preparing the anti-slip modified polyurethane-epoxy resin according to claim 1, characterized in that: Step (2) includes at least one of (a) to (f): (a) the mass ratio of the modified anti-slip particles to the diisocyanate is (1-5):(2-10); (b) the diisocyanate and the solvent are used in a ratio of 2-10 g: 20-70 mL; (c) the diisocyanate is isophorone diisocyanate and / or toluene diisocyanate; (d) the solvent is N,N-dimethylformamide; (e) the protective atmosphere is nitrogen; (f) The reaction temperature is 50-70°C; the reaction time is 1-5h.

6. The method for preparing the anti-slip modified polyurethane-epoxy resin according to claim 1, characterized in that: Step (3) includes at least one of (a) to (f): (a) The mass ratio of the epoxy resin, polymer diol, diisocyanate and modified diisocyanate is (2-7): (1-8): (5-10): (1-5); (b) the polymer diol, catalyst and solvent are used in a ratio of 1-8 g: 0.05-0.1 g: 50-100 mL; (c) the polymer diol, chain extender, neutralizer, ethylenediamine, and water are used in a ratio of 1-8 g: 0.01-0.5 g: 0.1-0.7 g: 1-6 mL: 30-150 mL; (d) the epoxy resin is E-44 epoxy resin and / or E-51 epoxy resin; (e) described polymer diol is polytetrahydrofuran diol; (f) The diisocyanate is isophorone diisocyanate and / or toluene diisocyanate, the chain extender is 1,4-butanediol, and the neutralizer is triethylamine.

7. The anti-slip modified polyurethane-epoxy resin prepared by the preparation method according to any one of claims 1 to 6.

8. An anti-slip coating, characterized in that: The anti-slip coating comprises component A and component B, wherein component A comprises the following raw materials in parts by weight: 70-100 parts of the anti-slip modified polyurethane-epoxy resin as claimed in claim 7; 5-30 parts of solvent; 1-5 parts of defoaming agent; 0.1-3 parts of dispersant; 10-30 parts of filler; The B component is an amine curing agent.

9. The method for preparing the anti-slip coating according to claim 8, characterized in that: The following steps are involved: The anti-skid modified polyurethane-epoxy resin and the solvent are mixed evenly, and then fillers, dispersants and defoamers are added to obtain component A; finally, component A and component B are packaged separately to obtain the anti-skid coating.

10. Use of the anti-skid coating as claimed in claim 8 in preventing indoor floors from skidding.

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