Wear-resistant epoxy floor coating and preparation method thereof

Abstract

The invention belongs to the technical field of floor coatings, and provides a wear-resistant epoxy floor coating and a preparation method thereof, the wear-resistant epoxy floor coating is prepared from the following raw materials by mass: 50-80 parts of epoxy resin, 10-25 parts of phenolic resin, 5-8 parts of an active diluent, 1-5 parts of a dispersant, 3-8 parts of a curing agent, 3-8 parts of a modifier, 30-40 parts of a filler, 1-10 parts of an organic solvent, 2-5 parts of nano Al2O3, and 1-5 parts of a wetting agent. According to the epoxy floor coating, mixed resin of bisphenol A epoxy resin and bisphenol F epoxy resin is adopted, the wear resistance of the coating can be remarkably improved, the hardness and durability of the coating can be improved by optimizing the ratio of the resin to the curing agent, it can be ensured that the coating is moderate in viscosity and easy to construct due to addition of the auxiliaries, the curing time is shortened, and the service life of the coating is prolonged. The construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of floor coatings, and in particular to a wear-resistant epoxy floor coating and a preparation method thereof. Background Art

[0002] Epoxy wear-resistant floor paint is a floor paint composed of epoxy resin, wear-resistant pigment, filler, toughening agent and solvent, which belongs to the new generation of floor technology. It is widely used in industrial plants, warehouses, supermarkets, heavy-duty machinery plants, machine repair plants, parking lots, cargo storage areas, squares and other floors. Existing epoxy floor paints have room for improvement in wear resistance, hardness, adhesion and construction efficiency, so it is particularly important to develop a high-performance wear-resistant epoxy floor paint. Summary of the invention

[0003] The purpose of the present invention is to provide a wear-resistant epoxy floor coating and a preparation method thereof, so as to overcome the defects of the prior art.

[0004] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0005] The present invention provides a wear-resistant epoxy floor coating, which is prepared by comprising the following raw materials in parts by weight:

[0006] 50-80 parts of epoxy resin, 10-25 parts of phenolic resin, 5-8 parts of active diluent, 1-5 parts of dispersant, 3-8 parts of curing agent, 3-8 parts of modifier, 30-40 parts of filler, 1-10 parts of organic solvent, 2-5 parts of nano-Al2O3, and 1-5 parts of wetting agent.

[0007] Furthermore, the epoxy resin is a mixed resin of bisphenol A epoxy resin and bisphenol F epoxy resin, and the mass ratio of the bisphenol A epoxy resin to the bisphenol F epoxy resin is 5.5-6.5:3.5-4.5.

[0008] Furthermore, the active diluent is one or more of diglycidyl ether, propylene oxide butyl ether, propylene oxide phenyl ether and dipropylene oxide ethyl ether;

[0009] The dispersant is one or more of unsaturated polycarboxylic acid adducts, polyamide salts of unsaturated polycarboxylic acids, and acrylate block copolymers;

[0010] The curing agent is one or more of an amine curing agent and an acid anhydride curing agent.

[0011] Further, the modifier is silane coupling agent KH-560;

[0012] The filler is one or more of glass fiber, graphite powder, quartz powder and talcum powder;

[0013] The organic solvent is one or more of ethanol, dimethyl carbonate, butanol and xylene.

[0014] Furthermore, the wetting agent is one or more of unsaturated polycarboxylic acid polymer, polyacrylate and polysiloxane copolymer.

[0015] The present invention also provides a method for preparing the wear-resistant epoxy floor coating, comprising the following steps:

[0016] (1) mixing bisphenol A epoxy resin, bisphenol F epoxy resin, phenolic resin, curing agent and modifier to obtain a mixture a;

[0017] (2) mixing the mixed material a, the filler and the nano-Al2O3 to obtain a mixed material b;

[0018] (3) Mix the mixed material b, the active diluent, the dispersant, the organic solvent and the wetting agent to obtain the wear-resistant epoxy floor coating.

[0019] Furthermore, in the step (1), the mixing speed is 1200-1500 rpm, and the mixing time is 10-20 min.

[0020] Furthermore, in the step (2), the mixing speed is 500 to 600 rpm, and the mixing time is 10 to 20 min.

[0021] Furthermore, in the step (3), the mixing speed is 500-600 rpm, and the mixing time is 30-45 min.

[0022] Beneficial effects:

[0023] The invention provides a wear-resistant epoxy floor coating and a preparation method thereof, which is prepared from the following raw materials: epoxy resin, phenolic resin, active diluent, dispersant, curing agent, modifier, filler, organic solvent, nano-Al2O3 and wetting agent. The epoxy floor coating of the invention adopts a mixed resin of bisphenol A epoxy resin and bisphenol F epoxy resin, which can significantly improve the wear resistance of the coating. By optimizing the ratio of resin to curing agent, the hardness and durability of the coating can be improved. The addition of auxiliary agents can ensure that the coating has moderate viscosity, is easy to construct, shortens the curing time, and improves the construction efficiency. DETAILED DESCRIPTION

[0024] The present invention provides a wear-resistant epoxy floor coating, which is prepared by comprising the following raw materials in parts by weight:

[0025] 50-80 parts of epoxy resin, 10-25 parts of phenolic resin, 5-8 parts of active diluent, 1-5 parts of dispersant, 3-8 parts of curing agent, 3-8 parts of modifier, 30-40 parts of filler, 1-10 parts of organic solvent, 2-5 parts of nano-Al2O3, and 1-5 parts of wetting agent.

[0026] In the present invention, the mass fraction of the epoxy resin is preferably 52 to 78 parts, more preferably 55 to 75 parts, and even more preferably 58 to 72 parts.

[0027] In the present invention, the weight percentage of the phenolic resin is preferably 12 to 23 parts, more preferably 14 to 22 parts, and even more preferably 16 to 20 parts.

[0028] In the present invention, the mass fraction of the reactive diluent is preferably 5.2 to 7.8 parts, more preferably 5.4 to 7.6 parts, and even more preferably 5.6 to 7.4 parts.

[0029] In the present invention, the mass fraction of the dispersant is preferably 1.5 to 4.5 parts, more preferably 2 to 4 parts, and even more preferably 2.5 to 3.5 parts.

[0030] In the present invention, the mass fraction of the curing agent is preferably 3.5 to 7.5 parts, more preferably 4 to 7 parts, and even more preferably 4.5 to 6.5 parts.

[0031] In the present invention, the mass fraction of the modifier is preferably 3.5 to 7.5 parts, more preferably 4 to 7 parts, and even more preferably 4.5 to 6.5 parts.

[0032] In the present invention, the mass fraction of the filler is preferably 31 to 39 parts, more preferably 32 to 38 parts, and even more preferably 33 to 37 parts.

[0033] In the present invention, the mass fraction of the organic solvent is preferably 2 to 9 parts, more preferably 3 to 8 parts, and even more preferably 4 to 7 parts.

[0034] In the present invention, the mass fraction of the nano-Al2O3 is preferably 2.2 to 4.8 parts, more preferably 2.5 to 4.5 parts, and more preferably 2.8 to 4.2 parts.

[0035] In the present invention, the mass fraction of the wetting agent is preferably 1.5 to 4.5 parts, more preferably 2 to 4 parts, and even more preferably 2.5 to 3.5 parts.

[0036] In the present invention, the epoxy resin is a mixed resin of bisphenol A epoxy resin and bisphenol F epoxy resin.

[0037] In the present invention, the mass ratio of the bisphenol A epoxy resin to the bisphenol F epoxy resin is preferably 5.5-6.5:3.5-4.5, more preferably 5.7-6.3:3.7-4.3, and more preferably 5.9-6.1:3.9-4.1.

[0038] In the present invention, the active diluent is preferably one or more of diglycidyl ether, propylene oxide butyl ether, propylene oxide phenyl ether and dipropylene oxide ethyl ether.

[0039] In the present invention, the dispersant is preferably one or more of unsaturated polycarboxylic acid adducts, polyamide salts of unsaturated polycarboxylic acids, and acrylate block copolymers.

[0040] In the present invention, the curing agent is preferably one or more of an amine curing agent and an acid anhydride curing agent.

[0041] In the present invention, the modifier is preferably a silane coupling agent KH-560;

[0042] In the present invention, the filler is preferably one or more of glass fiber, graphite powder, quartz powder and talcum powder;

[0043] In the present invention, the organic solvent is preferably one or more of ethanol, dimethyl carbonate, butanol and xylene.

[0044] In the present invention, the wetting agent is preferably one or more of unsaturated polycarboxylic acid polymers, polyacrylates and polysiloxane copolymers.

[0045] The present invention also provides a method for preparing a wear-resistant epoxy floor coating, comprising the following steps:

[0046] (1) mixing bisphenol A epoxy resin, bisphenol F epoxy resin, phenolic resin, curing agent and modifier to obtain a mixture a;

[0047] (2) mixing the mixed material a, the filler and the nano-Al2O3 to obtain a mixed material b;

[0048] (3) Mix the mixed material b, the active diluent, the dispersant, the organic solvent and the wetting agent to obtain the wear-resistant epoxy floor coating.

[0049] In the present invention, the mixing rotation speed in step (1) is preferably 1200 to 1500 rpm, more preferably 1250 to 1450 rpm, and even more preferably 1300 to 1400 rpm.

[0050] In the present invention, the mixing time is preferably 10 to 20 minutes, more preferably 11 to 19 minutes, and even more preferably 12 to 18 minutes.

[0051] In the present invention, the mixing rotation speed in step (2) is preferably 500 to 600 rpm, more preferably 520 to 580 rpm, and even more preferably 540 to 560 rpm.

[0052] In the present invention, the mixing time is preferably 10 to 20 minutes, more preferably 11 to 19 minutes, and even more preferably 12 to 18 minutes.

[0053] In the present invention, the mixing rotation speed in step (3) is preferably 500 to 600 rpm, more preferably 520 to 580 rpm, and even more preferably 540 to 560 rpm.

[0054] In the present invention, the mixing time is preferably 30 to 45 min, more preferably 32 to 43 min, and even more preferably 35 to 40 min.

[0055] The technical solutions provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0056] Example 1

[0057] According to the following mass parts, 36 parts of bisphenol A epoxy resin, 24 parts of bisphenol F epoxy resin, 15 parts of phenolic resin, 5 parts of amine curing agent and 5 parts of silane coupling agent KH-560 were weighed and mixed at a speed of 1400 rpm for 15 minutes to obtain a mixture a; the mixture a and 35 parts of quartz powder and 3 parts of nano Al2O3 were mixed at a speed of 550 rpm for 15 minutes to obtain a mixture b; the mixture b and 6.5 parts of diglycidyl ether, 3 parts of polyamide salt of unsaturated polycarboxylic acid, 5 parts of dimethyl carbonate, and 3 parts of unsaturated polycarboxylic acid polymer were mixed at a speed of 550 rpm for 40 minutes to obtain the wear-resistant epoxy floor coating.

[0058] Example 2

[0059] According to the following mass parts, 42 parts of bisphenol A epoxy resin, 28 parts of bisphenol F epoxy resin, 20 parts of phenolic resin, 5 parts of amine curing agent and 5 parts of silane coupling agent KH-560 were weighed and mixed at a speed of 1300 rpm for 15 minutes to obtain a mixture a; the mixture a and 35 parts of glass fiber and 3 parts of nano-Al2O3 were mixed at a speed of 550 rpm for 15 minutes to obtain a mixture b; the mixture b and 7 parts of propylene oxide butyl ether, 3 parts of polyamide salt of unsaturated polycarboxylic acid, 5 parts of ethanol, and 3 parts of unsaturated polycarboxylic acid polymer were mixed at a speed of 550 rpm for 35 minutes to obtain the wear-resistant epoxy floor coating.

[0060] Example 3

[0061] According to the following mass parts, 30 parts of bisphenol A epoxy resin, 20 parts of bisphenol F epoxy resin, 10 parts of phenolic resin, 3 parts of amine curing agent and 3 parts of silane coupling agent KH-560 were weighed and mixed at a speed of 1200 rpm for 10 minutes to obtain a mixture a; the mixture a and 30 parts of quartz powder and 2 parts of nano Al2O3 were mixed at a speed of 500 rpm for 10 minutes to obtain a mixture b; the mixture b and 5 parts of diglycidyl ether, 1 part of polyamide salt of unsaturated polycarboxylic acid, 1 part of ethanol, and 1 part of polyacrylate were mixed at a speed of 500 rpm for 30 minutes to obtain the wear-resistant epoxy floor coating.

[0062] Example 4

[0063] According to the following mass parts, 48 ​​parts of bisphenol A epoxy resin, 32 parts of bisphenol F epoxy resin, 25 parts of phenolic resin, 8 parts of anhydride curing agent and 8 parts of silane coupling agent KH-560 were weighed and mixed at a speed of 1500 rpm for 20 minutes to obtain a mixture a; the mixture a and 40 parts of glass fiber and 5 parts of nano-Al2O3 were mixed at a speed of 600 rpm for 20 minutes to obtain a mixture b; the mixture b and 8 parts of propylene oxide phenyl ether, 5 parts of polyamide salt of unsaturated polycarboxylic acid, 10 parts of butanol, and 5 parts of unsaturated polycarboxylic acid polymer were mixed at a speed of 600 rpm for 45 minutes to obtain the wear-resistant epoxy floor coating.

[0064] As can be seen from the above embodiments, the present invention provides a wear-resistant epoxy floor coating and a preparation method thereof, which is prepared by the following raw materials in parts by mass: 50-80 parts of epoxy resin, 10-25 parts of phenolic resin, 5-8 parts of active diluent, 1-5 parts of dispersant, 3-8 parts of curing agent, 3-8 parts of modifier, 30-40 parts of filler, 1-10 parts of organic solvent, 2-5 parts of nano-Al2O3, and 1-5 parts of wetting agent. The epoxy floor coating in the present invention adopts a mixed resin of bisphenol A epoxy resin and bisphenol F epoxy resin, which can significantly improve the wear resistance of the coating. By optimizing the ratio of resin to curing agent, the hardness and durability of the coating can be improved. The addition of additives can ensure that the coating has moderate viscosity, is easy to construct, and shortens the curing time, thereby improving construction efficiency.

[0065] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A wear-resistant epoxy floor coating, characterized in that: The preparation is obtained by including the following raw materials in parts by weight: 50-80 parts of epoxy resin, 10-25 parts of phenolic resin, 5-8 parts of active diluent, 1-5 parts of dispersant, 3-8 parts of curing agent, 3-8 parts of modifier, 30-40 parts of filler, 1-10 parts of organic solvent, 2-5 parts of nano-Al2O3, and 1-5 parts of wetting agent.

2. A wear-resistant epoxy floor coating according to claim 1, characterized in that: The epoxy resin is a mixed resin of bisphenol A epoxy resin and bisphenol F epoxy resin, and the mass ratio of the bisphenol A epoxy resin to the bisphenol F epoxy resin is 5.5-6.5:3.5-4.

5.

3. A wear-resistant epoxy floor coating according to claim 1, characterized in that: The active diluent is one or more of diglycidyl ether, propylene oxide butyl ether, propylene oxide phenyl ether and dipropylene oxide ethyl ether; The dispersant is one or more of unsaturated polycarboxylic acid adducts, polyamide salts of unsaturated polycarboxylic acids, and acrylate block copolymers; The curing agent is one or more of an amine curing agent and an acid anhydride curing agent.

4. A wear-resistant epoxy floor coating according to claim 1, characterized in that: The modifier is silane coupling agent KH-560; The filler is one or more of glass fiber, graphite powder, quartz powder and talcum powder; The organic solvent is one or more of ethanol, dimethyl carbonate, butanol and xylene.

5. A wear-resistant epoxy floor coating according to claim 1, characterized in that: The wetting agent is one or more of unsaturated polycarboxylic acid polymer, polyacrylate and polysiloxane copolymer.

6. A method for preparing a wear-resistant epoxy floor coating according to any one of claims 1 to 5, characterized in that: The following steps are involved: (1) mixing bisphenol A epoxy resin, bisphenol F epoxy resin, phenolic resin, curing agent and modifier to obtain a mixture a; (2) mixing the mixed material a, the filler and the nano-Al2O3 to obtain a mixed material b; (3) Mix the mixed material b, the active diluent, the dispersant, the organic solvent and the wetting agent to obtain the wear-resistant epoxy floor coating.

7. The preparation method according to claim 6, characterized in that: The mixing speed in the step (1) is 1200-1500 rpm, and the mixing time is 10-20 min.

8. The preparation method according to claim 6, characterized in that: The mixing speed in the step (2) is 500-600 rpm, and the mixing time is 10-20 min.

9. The preparation method according to claim 6, characterized in that: The mixing speed in the step (3) is 500-600 rpm, and the mixing time is 30-45 min.