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Impact-resistant corrosion-resistant powder paint for valves and preparation method thereof

A powder coating and corrosion-resistant technology for valves, applied in powder coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of poor bonding ability between powder coatings and metal substrates, insufficient corrosion resistance, and restrictions on the application of powder coatings. Good surface protection, high flatness, excellent corrosion resistance and leveling effect

Inactive Publication Date: 2016-04-13
TONGLING JINGWEI FLUID SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the combination ability of powder coatings with metal substrates is poor, the corrosion resistance is insufficient, and there are certain coating surface defects when applied to valve body coating, which limits the application of powder coatings in the field of valve coating.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] A kind of anti-impact and anti-corrosion valve powder coating, it is made by the raw material of following weight part:

[0016] Novolac epoxy resin 20, bisphenol A epoxy resin 15, ABS resin 5, barium sulfate 20, mullite fiber 3, nano cerium oxide 0.3, aluminum sol 4, water-based polyurethane emulsion 3, phenolic curing agent 3, Disodium edetate 0.5, castor oil polyoxyethylene ether 0.5, film-forming aid 6;

[0017] Among them, the solid content of aluminum sol is 20%, and the solid content of water-based polyurethane emulsion is 40%;

[0018] Wherein the film-forming aid is made of the following raw materials by weight: rosin 2, benzoin 0.5, epoxy soybean oil 5, acrylic acid 3, glyceryl monostearate 0.5, silane coupling agent KH-5700.5; The preparation method is to first melt and blend rosin, benzoin, epoxidized soybean oil and glycerol monostearate at 160°C, then adjust the temperature to 110°C and add other raw materials and stir for 2 hours to obtain the product. ...

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Abstract

The invention discloses an impact-resistant corrosion-resistant powder paint for valves, which is prepared from the following raw materials in parts by weight: 20-30 parts of novolac epoxy resin, 15-25 parts of bisphenol A epoxy resin, 5-10 parts of ABS (acrylonitrile-butadiene-styrene) resin, 20-30 parts of barium sulfate, 3-5 parts of mullite fiber, 0.3-0.5 part of nano cerium oxide, 4-6 parts of aluminasol, 3-5 parts of water-based polyurethane emulsion, 3-5 parts of phenol curing agent, 0.5-1 part of disodium edetate, 0.5-1 part of castor oil polyethenoxy ether and 6-8 parts of film forming assistant. The powder paint for valves has excellent corrosion resistance and leveling property. The formed coating has the advantages of high combining capacity with the metal matrix, smooth surface, high flatness, low tendency to peeling and cracking, high flexibility, high impact resistance and high stability, and can perform favorable surface protection function.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to an impact-resistant and corrosion-resistant valve powder coating and a preparation method thereof. Background technique [0002] Valves are indispensable components of fluid control equipment in important fields such as water conservancy, fire protection, petrochemical industry, metallurgy, and electric power. Their damage and replacement are mainly due to the corrosion of the main body. The inner cavity of the valve is in contact with the medium for a long time, and is corroded and eroded by the medium, which is prone to rust. After corrosion, the diameter of the valve becomes smaller and the flow resistance increases, which seriously affects the medium transmission and the service life of the valve. To solve this problem, coating the valve with a suitable paint is a common method. Powder coating is a new type of solvent-free coating, which has the characteristics of so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/04C09D163/00C09D7/12C09D5/08C09D5/03
CPCC09D163/04C08K2201/011C08L2205/02C08L2205/035C09D5/033C09D5/08C09D7/62C09D7/65C09D7/70
Inventor 吴寿涛
Owner TONGLING JINGWEI FLUID SCI & TECH
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