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Powder coating material and applications thereof

A powder coating and base powder technology, applied in the field of materials, can solve the problems of unfavorable powder coating application, high energy consumption of powder coating, poor weather resistance, etc., and achieve the effects of ensuring weather resistance, improving electrification performance, and good protection

Active Publication Date: 2020-01-17
GUANGZHOU KINTE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the use of powder coatings in the prior art, the workpiece is sprayed first, and then cured at a low temperature (below 200°C). However, it often needs to be cured twice, resulting in high energy consumption and complicated operations during the use of powder coatings.
In addition, the coating formed after curing often has poor weather resistance, which is not conducive to the application of powder coatings.

Method used

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  • Powder coating material and applications thereof
  • Powder coating material and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] A leveling agent is prepared through the following steps:

[0068] Mix methyl ethyl ketone and initiator dibenzoyl peroxide, heat to 85°C, then add acrylic acid and polyethylene terephthalate to react, the reaction temperature is 85°C, and the reaction time is 4 hours. Leveling agent.

[0069] The mass ratio of butanone, acrylic acid and polyethylene terephthalate is 100:50:30, and the mass of initiator dibenzoyl peroxide is 12% of butanone.

Embodiment 2

[0071] A leveling agent is prepared through the following steps:

[0072] Mix pentanone and initiator benzoyl peroxide tert-butyl peroxide, heat to 80°C, add crotonic acid and polyethylene glycol, and react. The reaction temperature is 80°C, and the reaction time is 4.5 hours to obtain a stream leveling agent.

[0073] The mass ratio of pentanone, crotonic acid and polyethylene glycol is 100:30:60, and the mass of initiator benzoyl peroxide tert-butyl peroxide is 14% of the mass of pentanone.

Embodiment 3

[0075] Compared with Example 1, polyvinyl alcohol is used to replace polyethylene terephthalate in Example 3, and the rest of the preparation process is the same.

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Abstract

The invention belongs to the field of materials, and discloses a powder coating material, which comprises bottom powder and surface powder, wherein the bottom powder comprises: an epoxy resin, a curing agent, a filler and an auxiliary agent, the surface powder comprises: a polyester resin, a curing agent, a filler and an auxiliary agent, the auxiliary agent comprises a leveling agent, and the preparation method of the leveling agent comprises: mixing ketone and an initiator, heating, adding olefine acid and a hydroxyl-containing polymer, and carrying out a reaction to obtain the leveling agent. Compared with the powder coating material in the prior art, the powder coating material of the invention has the following characteristics that the bottom powder and the surface powder contain the leveling agent, the leveling agent contains the non-polar group so as to uniformly mix the contact parts of the bottom powder and the surface powder, and the leveling agent contains the hydrophilic groups, so that the bottom powder and the surface powder are high in electrification capacity and good in compatibility, only one-time curing is needed, the curing temperature does not exceed 180 DEG C,and the cured coating has good weather resistance, wherein the neutral salt spray resistance time can reach 2000 h, and the acid resistance time is not less than 240 h.

Description

technical field [0001] The invention belongs to the field of materials, in particular to a powder coating and its application. Background technique [0002] Due to its outstanding environmental protection advantages, powder coatings are gradually replacing traditional solvent-based coatings. During the use of powder coatings in the prior art, the workpiece is sprayed first, and then cured at a low temperature (below 200°C). However, it often needs to be cured twice, resulting in high energy consumption and complicated operations during the use of powder coatings. . In addition, the coating formed after curing often has poor weather resistance, which is not conducive to the application of powder coatings. [0003] Therefore, it is very necessary to provide a powder coating which can be cured once and the coating formed after curing has good weather resistance. Contents of the invention [0004] The present invention aims to solve at least one of the technical problems ex...

Claims

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Application Information

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IPC IPC(8): C09D5/03C09D7/47C09D163/00C09D167/00C08F283/02C08F283/06C08F261/04C08F220/06C08F220/04
CPCC08F261/04C08F283/02C08F283/06C08L2205/03C09D5/033C09D163/00C09D167/00C09D7/47C08F220/06C08F220/04C08L67/00C08L51/08C08L51/003
Inventor 高庆福欧阳建群陈嘉壕肖龙和
Owner GUANGZHOU KINTE IND
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