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Damp and corrosion prevention valve powder coating and preparing method thereof

A valve powder coating and raw material technology, applied in powder coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of restricting the application of powder coatings, poor bonding ability between powder coatings and metal substrates, and insufficient corrosion resistance, achieving excellent The effect of corrosion resistance and leveling, strong adhesion and high flatness

Inactive Publication Date: 2016-04-20
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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Effect test

Embodiment Construction

[0015] A moisture-proof and anti-corrosion valve powder coating, which is made from the following raw materials in parts by weight:

[0016] Novolak epoxy resin 20, bisphenol A epoxy resin 20, guaiacol glyceryl ether 0.1, diatomaceous earth 20, nano cerium dioxide 0.3, aluminum sol 4, polyvinyl alcohol 0.5, water-based polyurethane emulsion 3, liquid paraffin 1, phenolic curing agent 3, polyaspartic acid 0.3, 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...

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Abstract

The invention discloses damp and corrosion prevention valve powder coating. The damp and corrosion prevention valve powder coating is prepared from, by weight, 20-30 parts of novolac epoxy resin, 20-30 parts of bisphenol A epoxy resin, 0.1-0.2 part of guaiacol glyceryl ether, 20-30 parts of kieselguhr, 0.3-0.5 part of nano-cerium oxide, 4-6 parts of alumina sol, 0.5-1 part of polyving akohol, 3-5 parts of aqueous polyurethane emulsion, 1-2 parts of liquid paraffin, 3-5 parts of phenolic curing agent, 0.3-0.5 part of polyaspartic acid and 6-8 parts of coalescing agent. The damp and corrosion prevention valve powder coating has excellent corrosion resistance and levelling property, a formed coating can be well combined with a metallic matrix, the surface is high in smoothness and flatness, peeling and cracking do not occur easily, damp resistance and corrosion resistance are high, and the damp and corrosion prevention valve powder coating is suitable for being used in a humid environment.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to a moisture-proof and anti-corrosion 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 solvent-fr...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/12C09D5/03C09D5/08
CPCC09D163/00C08K2201/011C08K2201/014C08L2205/035C09D5/033C09D5/08
Inventor 吴寿涛
Owner TONGLING JINGWEI FLUID SCI & TECH
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