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Aqueous epoxy zinc-enriched antirust priming paint for railway steel bridges and preparation method thereof

A water-based epoxy zinc-rich, anti-rust primer technology, applied in the field of coatings, can solve the problems of high zinc powder content, achieve the effects of enhanced anti-aging effect, improved weather resistance, and good electrical conductivity

Inactive Publication Date: 2020-03-27
安徽壹信通讯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this primer also has the problem of high zinc powder content, and its corrosion resistance can be further improved to meet the high requirements of the development of the railway industry for epoxy zinc-rich antirust primer

Method used

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  • Aqueous epoxy zinc-enriched antirust priming paint for railway steel bridges and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A water-based epoxy zinc-rich antirust primer for railway steel bridges, comprising component A and component B, wherein the component A and component B are composed in a mass ratio of 1:4;

[0031] Component A is made of the following raw materials in weight percentage: 62% of water-based epoxy resin emulsion, 1% of graphene-coated glass fiber, 0.5% of nano-antimony-doped tin dioxide, 0.8% of nano-titanium dioxide, γ-(2,3 -Glycidoxy)propyltrimethoxysilane 0.4%, n-butanol 4.5%, propylene glycol monomethyl ether 3%, simethicone 0.8%, deionized water 28%;

[0032] Component B is made of the following raw materials in weight percentage: cardanol modified polyamide curing agent 11%, zinc powder (5-20μm particle size) 38%, filler 27%, thixotropic agent 3.2%, BYK-025 0.3 %, BYK-181 0.3%, anti-flash rust agent 0.2%, mixed solvent 20%.

[0033] The epoxy equivalent of the aqueous epoxy resin emulsion is 700g / mol, the solid content is 54%, and the solvent is water.

[0034] Th...

Embodiment 2

[0039] A water-based epoxy zinc-rich antirust primer for railway steel bridges, comprising component A and component B, wherein the component A and component B are composed in a mass ratio of 1:4;

[0040] Component A is made of the following raw materials in weight percentage: 56% of water-based epoxy resin emulsion, 0.5% of graphene-coated glass fiber, 0.8% of nano-antimony-doped tin dioxide, 0.3% of nano-titanium dioxide, γ-(2,3 -Glycidoxy)propyltrimethoxysilane 0.4%, n-butanol 5.5%, propylene glycol monomethyl ether 4%, simethicone 0.5%, deionized water 32%;

[0041] Component B is made of the following raw materials in weight percentage: cardanol modified polyamide curing agent 11%, zinc powder (5-20μm particle size) 37%, filler 33%, thixotropic agent 3.4%, BYK-025 0.2 %, BYK-181 0.3%, anti-flash rust agent 0.1%, mixed solvent 15%.

[0042] The epoxy equivalent of the aqueous epoxy resin emulsion is 600g / mol, the solid content is 56%, and the solvent is water.

[0043] ...

Embodiment 3

[0049] A water-based epoxy zinc-rich antirust primer for railway steel bridges, comprising component A and component B, wherein the component A and component B are composed in a mass ratio of 1:4;

[0050] Component A is made of the following raw materials in weight percentage: 65% of water-based epoxy resin emulsion, 1% of graphene-coated glass fiber, 0.3% of nano-antimony-doped tin dioxide, 1.2% of nano-titanium dioxide, β-(3,4 -Epoxycyclohexyl)ethyltrimethoxysilane 0.2%, n-butanol 3.5%, propylene glycol monomethyl ether 2%, simethicone 0.8%, deionized water 26%;

[0051] Component B is made of the following raw materials in weight percentage: cardanol modified polyamide curing agent 9%, zinc powder (5-20μm particle size) 37%, filler 29%, thixotropic agent 2%, BYK-028 0.5 %, BYK-187 0.1%, anti-flash rust agent 0.4%, mixed solvent 22%.

[0052] The epoxy equivalent of the aqueous epoxy resin emulsion is 750g / mol, the solid content is 53%, and the solvent is water.

[0053] ...

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Abstract

The invention provides an aqueous epoxy zinc-enriched antirust priming paint for railway steel bridges and a preparation method thereof, and relates to the technical field of paints. The priming paintcomprises a component (a) and a component (b) according to a mass ratio of 1:4. The component (a) is prepared from following raw materials: aqueous epoxy resin emulsion, graphene coated glass fibers,nano antimony doped tin dioxide, nano titanium dioxide, an epoxy silane coupling agent, n-butyl alcohol, propylene glycol mono-methyl ether, an antifoaming agent (A), and deionized water; and the component (b) is prepared from following raw materials: a cardanol modified polyamide curing agent, zinc powder, a filling material, a thixotropic agent, an antifoaming agent (B), a dispersant, a flush-rust resistant agent, and a mixed solvent. By adding graphene coated glass fibers and nano antimony doped tin dioxide into the paint, the prepared epoxy zinc-enriched antirust priming paint has an excellent corrosion resistant performance, a strong adhesion force, and good weatherability even if the zinc powder content is low.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based epoxy zinc-rich antirust primer for railway steel bridges and a preparation method thereof. Background technique [0002] Zinc-rich coatings can be divided into inorganic zinc-rich coatings and organic zinc-rich coatings. Inorganic zinc-rich coatings use alkaline silicate and alkyl silicate as film-forming substances, which have excellent adhesion, rust resistance, weather resistance and certain heat resistance; organic zinc-rich coatings mainly refer to epoxy Zinc-rich paint, with epoxy resin as the main film-forming substance, has the characteristics of good adhesion, low requirements on the treatment of the substrate, and convenient construction. [0003] With the rapid development of my country's railway industry, more and more railway steel bridges are used on railway lines. Whether domestic or foreign, railway steel bridges are generally protected by anti-c...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/10C09D5/14C09D5/16C09D7/62C09D7/61C09D7/65
CPCC08K2003/0893C08K2003/2241C08K2201/003C08K2201/011C08L2201/08C08L2312/00C09D5/106C09D5/14C09D5/1687C09D163/00C08L91/00C08L77/00C08K13/06C08K9/10C08K9/06C08K3/042C08K7/14C08K3/22C08K3/08C08K3/36C08K3/346
Inventor 张超
Owner 安徽壹信通讯科技有限公司
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