Impact-resistant strong-adhesion type powder coating material and preparation method thereof

A powder coating and impact technology, applied in powder coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of poor impact resistance and adhesion of coatings, and achieve strong impact resistance, high hardness, excellent The effect of adhesion

Inactive Publication Date: 2020-07-24
浙江绿环新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a powder coating with strong impact resistance and strong adhesion and a preparation method thereof in order to overcome the problems of poor impact resistance and adhesion of coatings in the prior art. The powder coating has good flexibility and high hardness , with super impact resistance and excellent adhesion

Method used

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  • Impact-resistant strong-adhesion type powder coating material and preparation method thereof
  • Impact-resistant strong-adhesion type powder coating material and preparation method thereof

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preparation example Construction

[0026] Another aspect of the present invention provides a method for preparing the aforementioned impact-resistant strong adhesion powder coating, the method comprising the following steps:

[0027] (1) melt mixing and grinding modified epoxy resin, modified polyester resin and curing agent;

[0028] (2) Add polycarbonate resin, styrene-acrylonitrile resin and leveling agent to the product obtained in step (1), melt and mix;

[0029] (3) Add pigment to the product obtained in step (2), grind after stirring.

[0030] In order to improve the impact resistance and adhesion of the powder coating of the present invention, step (1) and step (3) also include passing the product after grinding through a 50-80 mesh screen; specifically, for example, it can be 50 mesh, 60 mesh, 70 mesh, 80 mesh and any value in the range formed by any two of these point values; preferably, step (1) and step (3) also include passing the ground product through a 65 mesh screen.

Embodiment 1

[0033] (1) the glycidyl ester type epoxy resin of 10 weight parts, the acrylic acid modified polyester resin of 15 weight parts and the diethylenetriamine melt mixing of 4 weight parts, grind, cross 65 mesh screens;

[0034] (2) Add 13 parts by weight of aliphatic polycarbonate resin, 17 parts by weight of styrene-acrylonitrile resin and 4 parts by weight of silicone leveling agent in the product obtained in step (1), melt and mix;

[0035] (3) Add 37 parts by weight of pigments to the product obtained in step (2) (the weight ratio of chrome green, molybdenum chrome red and carbon black is 1:0.8:2), grind after stirring, and cross a 65-mesh sieve to obtain a coating A1.

Embodiment 2

[0037] (1) Diethylaminopropylamine melt mixing and grinding of the glycidylamine type epoxy resin of 2 parts by weight, the acrylic acid modified polyester resin of 15 parts by weight and 5 parts by weight, and cross 50 mesh screens;

[0038] (2) Add 15 parts by weight of aliphatic polycarbonate resin, 18 parts by weight of styrene-acrylonitrile resin and 5 parts by weight of fluorocarbon leveling agent in the product obtained in step (1), melt mixing;

[0039] (3) Add 40 parts by weight of pigments (the weight ratio of chrome green, molybdenum chrome red and carbon black is 1:0.5:2.5) to the product obtained in step (2), grind after stirring, and cross a 50-mesh sieve to obtain a coating A2.

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Abstract

The invention relates to the technical field of powder coating materials, and discloses an impact-resistant strong-adhesion type powder coating material and a preparation method thereof, wherein 100 parts by weight of the impact-resistant strong-adhesion type powder coating material are prepared from 2 to 20 parts by weight of a modified epoxy resin, 12 to 15 parts by weight of a modified polyester resin, 13 to 15 parts by weight of a polycarbonic acid resin, 15 to 18 parts by weight of a styrene-acrylonitrile resin, 2 to 5 parts by weight of a curing agent, 3 to 5 parts by weight of a leveling agent and 35 to 40 parts by weight of a pigment. After the specific resin composition of the modified epoxy resin, the modified polyester resin, the polycarbonic acid resin and the styrene-acrylonitrile resin is combined with the curing agent, the leveling agent and the pigment according to a specific ratio, the obtained powder coating material is good in flexibility and high in hardness, and has super-strong impact resistance and excellent adhesive force.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to an impact-resistant strong adhesion powder coating and a preparation method thereof. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for home decoration. Using traditional paint to paint the wall will produce organic solvent volatiles, such as formaldehyde, which will pollute the indoor environment and seriously endanger human health. Powder coating is a completely different form from general coatings, and it exists in the state of fine powder. Because no solvent is used, it is called powder coating. Powder coating has the characteristics of harmlessness, high efficiency, resource saving and environmental protection. The existing powder coatings are not strong in impact resistance and adhesion. After the paint is painted on the wall, it is prone to serious powder dropping. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/12C09D163/00C09D169/00C09D167/06C09D5/03
CPCC08L2205/025C08L2205/035C09D5/033C09D125/12C09D163/00C08L63/00C08L69/00C08L67/06C08L25/12
Inventor 阮惬冰李俊杰
Owner 浙江绿环新材料科技有限公司
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