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Super-weatherable polyether powder coating and preparation method thereof

A technology of polyester powder and super weather resistance, which is applied in the direction of polyester coating, powder coating, coating, etc., and can solve the problems of low production labor efficiency, coating thickness should not be too thick, and long time required

Inactive Publication Date: 2010-12-29
YANGZHOU JINCHEN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In addition, these solvent-based coatings are all self-drying coatings, and the thickness of each coating should not be too thick. Generally, the thickness of one coating is 20 microns to 30 microns. It usually takes 24 hours before the coating film is completely dry before it can be painted again. One piece, so it takes a long time to coat a thickness of nearly 300 microns, and the production labor efficiency is also very low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The formula example of the super weather-resistant polyester powder coating of the present invention is: 60.5 parts of carboxyl-terminated polyester resin, 4.5 parts of triglycidyl isocyanurate (TGIC), 18 parts of rutile titanium dioxide, 12 parts of precipitated barium sulfate, and leveling agent 2.0 parts, 1.0 parts of dispersant, 0.5 parts of degassing agent, 0.02 parts of loosening agent, 0.5 parts of ultraviolet light absorber, 0.5 parts of antioxidant, and 0.2 parts of accelerator.

[0024] The manufacturing steps of the super weather-resistant polyester powder coating of the present invention are:

[0025] a. Weigh the raw materials according to the formula;

[0026] b. Pre-mixing with a high-speed mixer;

[0027] c. Use an extruder to melt and extrude and mix, and the melting and mixing temperature is about 120°C;

[0028] d. Tablet cooling and crushing;

[0029] e. Use air classification to grind and classify;

[0030] f. Sieve and separate with vibrating s...

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PUM

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Abstract

The invention relates to a super- weatherable polyether powder coating, comprising the following components in terms of mass percent: 58.5-62.4% of thermosetting resin hydroxyl-terminated polyester resin, 2.6-6.5% of curing agent, 10-20% of pigment, 10-20% of filler and 2-6% of assistant. The super- weatherable polyether powder coating has excellent performance of resisting ultraviolet, excellent weather resistance and strong adhesion to the primer, does not cause environment pollution and damage the health of the workers during the coating, and effectively improves the coating efficiency.

Description

1. Technical field [0001] The invention relates to a powder coating, in particular to a polyester powder coating and a preparation method thereof. 2. Background technology [0002] With the rapid development of industrial production technology in various countries in the world, the demand for energy continues to grow, the use of limited resources such as oil and coal is restricted, and the use of unlimited resources such as hydropower, wind power and solar energy is favored by people and is becoming more and more popular. attention from all over the world. In recent years, while strengthening oil and coal prospecting, my country has also attached great importance to wind power generation, and it has developed rapidly in the northeast and northwest regions where wind resources are abundant. In order to ensure the safety and service life of wind power generation equipment, anti-corrosion coatings and decorative coatings must be carried out on the outer and inner layers of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D5/03C09D7/12
Inventor 陈道芳李贵富
Owner YANGZHOU JINCHEN CHEM
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