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A kind of pure polyester transparent powder coating and preparation method thereof

A powder coating and transparent technology, used in powder coatings, polyester coatings, anti-corrosion coatings, etc., can solve the problems of transparency and leveling that cannot reach the level of acrylic transparent powder coatings, improve transparency and anti-interference, and improve looseness. the effect of improving the hardness

Active Publication Date: 2021-10-15
GUANGZHOU KINTE IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the transparency and leveling of existing polyester transparent powder coatings cannot reach the level of acrylic transparent powder coatings, and provide a pure polyester transparent powder coating and its preparation method

Method used

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  • A kind of pure polyester transparent powder coating and preparation method thereof
  • A kind of pure polyester transparent powder coating and preparation method thereof
  • A kind of pure polyester transparent powder coating and preparation method thereof

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Embodiment Construction

[0023] The technical solution of the present invention is further illustrated below through specific examples.

[0024] The present invention provides a kind of pure polyester transparent powder coating that is used for automobile aluminum wheel cover finish, and its raw material composition is as shown in Table 1 below.

[0025] Table 1. Pure polyester transparent powder coating composition

[0026]

[0027] The carboxy-terminated polyester resin in Table 1 is super-weather-resistant carboxyl-terminated polyester resin of model NH9307 produced by Guangzhou Qingtian Material Technology Co., Ltd., and its acid value is 30-36 mgKOH / g.

[0028] Semi-crystalline polyester resin is a polyester resin that can partially form a crystalline phase and partially form an amorphous phase, which is obtained by polymerizing polyols and polybasic acids under a certain catalyst. Compared with traditional amorphous polyester resins, it can simultaneously have higher glass transition tempera...

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Abstract

The invention provides a pure polyester transparent powder coating and a preparation method thereof. The raw materials include 60-63 parts of carboxyl-terminated polyester resin, 30-35 parts of semi-crystalline polyester resin, and triglycidyl isocyanurate by weight. 5-7 parts, 10-25 parts of modified transparent filler, 0.1-2 parts of curing accelerator, 0.1-1 part of benzoin, 0.1-2 parts of hardening agent, 0.8-2 parts of leveling agent, 0.1 part of ultraviolet absorber ~1 part and 0.5~2 parts of toughening agent, wherein the modified transparent filler is modified aluminosilicate. The coating of the invention has the high leveling property, high transparency, high weather resistance and high corrosion resistance of the finish coating, and satisfies the coating requirements of good aesthetics and durability of the aluminum wheel hub coating.

Description

technical field [0001] The invention belongs to the technical field of powder coatings, and in particular relates to a pure polyester transparent powder coating and a preparation method thereof. Background technique [0002] Powder coating is a kind of solvent-free coating, which is widely used in car topcoat and finish topcoat because of its solvent-free, non-toxic, strong three-dimensional effect and good decorative effect. [0003] Aluminum wheels are one of the key components of automobiles, and their surface coating has a key impact on the aesthetics and durability of aluminum wheels. Aluminum wheels generally need to be coated with three layers of powder coatings. The first layer is the base powder coating for anti-corrosion on the bottom layer, that is, the wheel base powder; the second layer is the metal effect powder coating for decoration, that is, metal powder; The third layer is the surface layer of the top layer of varnish transparent powder coating, that is, v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00C09D5/03C09D5/08C09D7/62C09D5/32C09D7/63
CPCC08L2201/10C08L2205/025C09D5/033C09D5/08C09D5/32C09D167/00C08L67/00C08K13/06C08K9/06C08K3/34C08K5/34924
Inventor 李光吴鹏洲高庆福程里欧阳建群
Owner GUANGZHOU KINTE IND
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