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Method of producing modified compound powder paint

A composite powder and coating technology, applied in powder coatings and other directions, can solve the problems of low melt viscosity of polyphenylene sulfide, poor self-leveling performance, and can not fully meet the anti-corrosion requirements of oil well pipes, so as to overcome the sag phenomenon and improve the anti-corrosion properties. Effects of Stress Corrosion Properties

Inactive Publication Date: 2008-04-02
TIANJIN ZHENDONG PAINTS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The epoxy powder coating currently used as anti-corrosion coating cannot fully meet the anti-corrosion requirements of oil well pipes
The melt viscosity of polyphenylene sulfide is too low, the self-leveling performance is poor, and the corrosion resistance of the coating is reduced

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0006] Example: A method for preparing a modified composite powder coating. The polyphenylene sulfide powder with an average particle size of 75 μm is treated with 30% of nano-barium sulfate with an average particle size of 25 nm by a silane coupling agent, and ground in a ball mill for 2 hours. , apply the composite paint on the surface of the steel plate that has been sandblasted, the pressure is 0.3Mpa, and then place the coated steel plate in an oven, heat treatment at 340-380°C for 20-30 minutes, and perform plasticizing treatment, that is A smooth, smooth finish is obtained.

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PUM

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Abstract

The present invention discloses a preparation method of modifying compound powder dope; polyphenylene sulfide powder with the average grain diameter 75um and 30 percent of nanometer barium sulfate with the average grain diameter 25um after being surface-treated by silicon alkyl coupling agent are grilled in a ball grinder for 2 hours, and then the compound dope is coated on the surface of steel plate after being treated with sand-spraying; the pressure is 0.3MPa; and then the steel plate after being coated is put inside an oven to be heated for 20-30 minutes in 340-380 DEG C temperature, and then to be made with molding treatment; the coating level with smooth and clean surface can be obtained. The present invention has the advantages that the present invention can overcome the problem of flow-hanging during the heat molding stage, and also can enhance the anti-force and eroded-resisting performance for the coating level.

Description

technical field [0001] The invention relates to a preparation method of a modified composite powder paint. Background technique [0002] The epoxy powder coating currently used as an anti-corrosion coating cannot fully meet the anti-corrosion requirements of oil well pipes. The melt viscosity of polyphenylene sulfide is too low, the self-leveling performance is poor, and the corrosion resistance of the coating is reduced. Contents of the invention [0003] The purpose of the present invention is to overcome above-mentioned defect, proposes a kind of preparation method of modified composite powder coating. [0004] The technical solution of the present invention is: a method for preparing a modified composite powder coating, characterized in that: the polyphenylene sulfide powder with an average particle diameter of 75 μm is treated with 30% of nano-barium sulfate with an average particle diameter of 25 nm by a silane coupling agent , after grinding in a ball mill for 2 h...

Claims

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Application Information

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IPC IPC(8): C09D181/02C09D5/03
Inventor 张云波
Owner TIANJIN ZHENDONG PAINTS CO LTD
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