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Environmental stress-resistant epoxy resin powder coating and preparation method thereof

An epoxy resin powder and environmental stress technology, applied in epoxy resin coatings, powder coatings, anti-corrosion coatings, etc., can solve the problems of general anti-environmental stress performance, low curing cross-linking density, easy chain breaking and degradation, etc., to achieve Improvement of mechanical strength, improvement of heat resistance, enhancement of toughness and effects of glass transition temperature

Inactive Publication Date: 2018-07-06
ZHEJIANG HUACAI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small number of epoxy groups in the epoxy resin, low curing crosslinking density, and containing aromatic ether bonds, the cured product is easily broken and degraded after being irradiated by sunlight and ultraviolet rays, so it is easy to lose luster, pulverize and detach, and has long-term and heat resistance. Poor, poor weather resistance, general resistance to environmental stress
[0004] Chinese patent CN200810038795, patent name ultra-low temperature epoxy resin and polyester mixed powder coating, discloses mixing epoxy resin and polyester, and auxiliary adding titanium dioxide, leveling agent, defoamer, antistatic agent, benzoin, pigment, Epoxy resin powder coatings with brighteners and fillers, thereby improving the utilization rate of epoxy resin powder coatings and reducing costs, but the performance of the epoxy resin powder coatings against environmental stress is general

Method used

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  • Environmental stress-resistant epoxy resin powder coating and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]An epoxy resin powder coating resistant to environmental stress, made of the following components: 72g of epoxy resin, 13g of high-density polyethylene resin, 8g of polybismaleimide resin, 12g of hydroxyl silicone oil, and 20g of silane crosslinking agent , Salicylic acid 5g, organic solvent 180g, antioxidant 1.6g, light shielding agent 1.4g, leveling agent 2.2g, defoamer 2.6g, toughening agent 8g, filler 8g, curing agent 2g, polyvinylidene fluoride 28g , ABS monomer composition 18g, initiator 1.6g and water 180g, wherein in the ABS monomer composition of mass fraction 100wt%, acrylonitrile is 25wt%, butadiene is 20wt%, and the remainder is styrene, silane The crosslinking agent is vinyltriethoxysilane; the filler is a composition of andalusite powder, fluorite powder and kaolin powder, and the mass ratio of the three is 1:0.7:0.45; the organic solvent is an aqueous solution of acetone with a mass concentration of 65 wt%. ; The toughening agent is lignin powder.

[0030...

Embodiment 2

[0036] An epoxy resin powder coating against environmental stress, made of the following components: 65g of epoxy resin, 11g of high-density polyethylene resin, 7g of polybismaleimide resin, 10g of hydroxyl silicone oil, and 18g of silane crosslinking agent , Salicylic acid 3g, organic solvent 160g, antioxidant 1g, light shielding agent 0.8g, leveling agent 1.5g, defoamer 2g, toughening agent 6g, filler 6g, curing agent 1g, polyhexafluoropropylene 26g, ABS 13g of monomer composition, 1g of initiator and 120g of water, wherein, in the ABS monomer composition based on mass fraction 100wt%, acrylonitrile is 20wt%, butadiene is 35wt%, and the rest is styrene; silane crosslinking The agent is vinyltrimethoxysilane; the filler is a composition of andalusite powder, fluorite powder and kaolin powder, and the mass ratio of the three is sequentially 1:0.6:0.4; the organic solvent is an aqueous solution of acetone with a mass concentration of 60wt%; the toughening The agent is lignin po...

Embodiment 3

[0043] An epoxy resin powder coating resistant to environmental stress, made of the following components: 85g of epoxy resin, 15g of high-density polyethylene resin, 10g of polybismaleimide resin, 14g of hydroxyl silicone oil, and 23g of silane crosslinking agent , salicylic acid 7g, organic solvent 200g, antioxidant 2g, light shielding agent 1.7g, leveling agent 3g, defoamer 3g, toughening agent 10g, filler 10g, curing agent 4g, polyhexafluoropropylene or polytrifluoroethylene Vinyl chloride 32g, ABS monomer composition 20g, initiator 2g and water 200g, wherein, in the ABS monomer composition of mass fraction 100wt%, acrylonitrile is 30wt%, butadiene is 15wt%, and the rest is benzene Ethylene; silane crosslinking agent is vinyl tris (methoxyethoxy) silane; filler is the composition of andalusite powder, fluorite powder and kaolin powder, the mass ratio of the three is 1:0.8:0.5 in turn; organic solvent It is an aqueous solution of acetone with a mass concentration of 70 wt%, ...

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Abstract

The invention relates to the technical field of epoxy resin powder coating, in particular to environment stress-resistant epoxy resin powder coating and a preparation method thereof. The environmentalstress-resistant epoxy resin powder coating is prepared from components such as epoxy resin, high-density polyethylene resin, polybismaleimide resin, hydroxyl silicone oil, a silane cross-linking agent, salicylic acid, an organic solvent, polyvinylidene fluoride, polyhexafluoropropylene or polytrifluorochloroethylene, a ABS monomer composition, an initiator, water, an antioxidant, a light shielding agent, filler and a curing agent. The epoxy resin is mixed with the hydroxyl silicone oil and the silane coupling agent to form organic silicone modified epoxy resin which is then mixed with a mixture of the polyvinylidene fluoride, the polyhexafluoropropylene or the polytrifluorochloroethylene, and the ABS monomer composition to be extruded and molded to obtain the epoxy resin powder coating.The environmental stress-resistant epoxy resin powder coating is high in damp and heat resistance and corrosion resistance, high in weather resistance, good in mechanical performance, convenient to produce with a simple process, safe and nontoxic.

Description

technical field [0001] The invention relates to the technical field of epoxy resin powder coatings, in particular to an epoxy resin powder coating resistant to environmental stress and a preparation method thereof. Background technique [0002] Powder coating refers to 100% solid powder coating without solvent, which exists in the state of fine powder, and is mainly composed of film-forming resin, additives, pigments, fillers, etc., mixed, crushed, and sieved. It needs electrostatic spraying and baking to form a film. It has the characteristics of solvent-free, pollution-free, recyclable, environmental protection, energy and resource saving, labor intensity reduction and high mechanical strength of the coating film. Powder coatings include two categories: thermoplastic powder coatings and thermosetting powder coatings, of which thermoplastic powder coatings include polyethylene, polypropylene, polyester, polyvinyl chloride, chlorinated polyether, polyamide and cellulose, etc...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D123/06C09D179/08C09D183/04C09D127/16C09D155/02C09D197/00C09D127/20C09D127/12C09D5/08C09D5/03C09D7/61C09D7/63
CPCC09D163/00C08K2003/162C08L2205/035C08L2205/06C08L2207/062C09D5/033C09D5/08C08L23/06C08L79/085C08L83/04C08L27/16C08L55/02C08L97/005C08K13/02C08K3/16C08K3/346C08K3/34C08L27/20C08L27/12
Inventor 孙华强杨立新蒋雍章毅浩
Owner ZHEJIANG HUACAI NEW MATERIAL CO LTD
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