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Anti-corrosion automobile powder coating with good adhesive force

A powder coating and adhesion technology, which is applied in the field of automotive powder coatings, can solve the problems of easy falling off of the paint film and affect the lifespan, and achieve the effect of not easy falling off, improving adhesion and long service life

Inactive Publication Date: 2015-03-04
李永志
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For automotive powder coatings, the adhesion of the powder is very important. If the adhesion of the powder coating is small, the sprayed paint film is easy to fall off, which will affect the service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The preparation method of good anticorrosion automobile powder coating of adhesion, comprises the following steps,

[0014] (1) In parts by weight, mix 45 parts of polyamide resin, 1 part of bisphenol A epoxy resin, 5 parts of silicone, 2 parts of phenalkamine, 2 parts of curing agent and 2 parts of leveling agent to obtain a mixture Material A.

[0015] (2) Mix 15 parts of modified rosin resin, 20 parts of titanium dioxide, 3 parts of chrome yellow, 0.3 part of dibutyltin dilaurate, and 0.5 part of stabilizer to obtain mixture B.

[0016] (3) Use a twin-screw extruder to extrude compound A at the front end at 75°C-85°C, raise the temperature of the extruder to 110°C-120°C in the middle section, then add compound B, and extrude it. Powder coating is obtained after pulverization.

Embodiment 2

[0018] The preparation method of good anticorrosion automobile powder coating of adhesion, comprises the following steps,

[0019] (1) In parts by weight, mix 50 parts of polyamide resin, 2 parts of bisphenol A epoxy resin, 10 parts of silicone, 3 parts of phenalkamine, 3 parts of curing agent and 2.5 parts of leveling agent to obtain a mixture Material A.

[0020] (2) Mix 25 parts of modified rosin resin, 25 parts of titanium dioxide, 6 parts of chrome yellow, 0.6 part of dibutyltin dilaurate, and 1 part of stabilizer to obtain mixture B.

[0021] (3) Use a twin-screw extruder to extrude compound A at the front end at 75°C-85°C, raise the temperature of the extruder to 110°C-120°C in the middle section, then add compound B, and extrude it. Powder coating is obtained after pulverization.

Embodiment 3

[0023] The preparation method of good anticorrosion automobile powder coating of adhesion, comprises the following steps,

[0024] (1) In parts by weight, mix 48 parts of polyamide resin, 1.5 parts of bisphenol A epoxy resin, 8 parts of silicone, 2.5 parts of phenalkamine, 2.5 parts of curing agent and 2.3 parts of leveling agent to obtain a mixture Material A.

[0025] (2) Mix 20 parts of modified rosin resin, 22 parts of titanium dioxide, 5 parts of chrome yellow, 0.4 parts of dibutyltin dilaurate, and 0.7 parts of stabilizer to obtain mixture B.

[0026] (3) Use a twin-screw extruder to extrude compound A at the front end at 75°C-85°C, raise the temperature of the extruder to 110°C-120°C in the middle section, then add compound B, and extrude it. Powder coating is obtained after pulverization.

[0027] In the powder coating of the invention, the addition of organic silicon can not only reduce the internal stress of the bisphenol A epoxy resin, but also improve the toughne...

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PUM

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Abstract

The invention discloses an anti-corrosion automobile powder coating with a good adhesive force. The anti-corrosion automobile powder coating comprises the components in parts by weight: 45-50 parts of polyamide resin, 1-2 parts of bisphenol A epoxy resin, 15-25 parts of modified rosin resin, 20-25 parts of titanium dioxide, 3-6 parts of lead chromate, 5-10 parts of organosilicone, 2-3 parts of phenolic aldehyde amine, 0.3-0.6 part of dibutyltin dilaurate, 2-3 parts of curing agent, 0.5-1 part of stabilizer and 2-2.5 parts of flatting agent. The anti-corrosion automobile powder coating has the good adhesive force and corrosion resistance.

Description

technical field [0001] This invention relates to automotive powder coatings. Background technique [0002] At present, with the rapid development of global industry, the environmental problems caused are becoming increasingly prominent. How to carry out environmental protection work has become an important subject to be studied urgently. Some western countries with strong environmental awareness have developed and researched automotive coatings with low volatile organic compounds, and put them into production and use in large quantities. With the continuous development of the automobile industry, in order to beautify the appearance of the automobile coating film and reduce the environmental pollution caused by it, it is particularly important to improve the automobile spraying technology. [0003] For automotive powder coatings, the adhesion of the powder is very important. If the adhesion of the powder coating is small, the sprayed paint film is easy to fall off, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D177/00C09D193/04C09D163/00C09D7/12C09D5/03C09D5/08
CPCC08K2003/2241C09D177/00C08L2205/03C09D5/03C09D5/086C09D7/65
Inventor 李永志
Owner 李永志
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