Extra-weather-resistant matt fluorocarbon-polyester composite powder coating and preparation method thereof

A technology of ultra-weather-resistant matt and powder coatings, applied in powder coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of high material costs and slow progress, and achieve long service life, soft light, and delicate appearance and touch Effect

Active Publication Date: 2016-03-23
GUANGZHOU KINTE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure fluorocarbon system powder coatings have inherent deficiencies in adhesion, pigment and filler wettability, etc., coupled with their high material costs, making pure fluorocarbon system powder coatings progress slowly in market application and promotion.

Method used

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  • Extra-weather-resistant matt fluorocarbon-polyester composite powder coating and preparation method thereof
  • Extra-weather-resistant matt fluorocarbon-polyester composite powder coating and preparation method thereof
  • Extra-weather-resistant matt fluorocarbon-polyester composite powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A fluorocarbon-polyester composite ultra-weather-resistant matt powder coating, including component A and component B, the specific formula is as follows:

[0039]

[0040]

[0041] The preparation method of this embodiment is as follows:

[0042] (a) Weigh each component according to the ratio of components A and B, respectively, place them in the mixing tank, fully mix and crush for 5 minutes;

[0043] (b) The crushed components A and B are melted and extruded into the twin or single-screw extruder respectively; the heating temperature of the extruder is controlled at 110°C;

[0044] (c) The extruded components A and B are tabletted, cooled, and simply crushed into flakes;

[0045] (d) Mix the flaky materials of components A and B evenly at a ratio of 1:1, and then pulverize them into a powder with a particle size (equivalent particle size D50) of 40-50 microns by a mill, and then sieve Packaged to obtain powder coating sample powder 1.

Embodiment 2

[0047] A fluorocarbon-polyester composite super-weather-resistant matte powder coating, including component A and component B compounded at a weight ratio of 1:1, the specific formula is as follows:

[0048]

[0049]

[0050] The preparation method of this example is the same as that of Example 1, and powder coating sample powder 2 is obtained.

Embodiment 3

[0052] A fluorocarbon-polyester composite super-weather-resistant matte powder coating, including component A and component B compounded at a weight ratio of 1:1, the specific formula is as follows:

[0053]

[0054] The preparation method of this example is the same as that of Example 1, and powder coating sample powder 3 is obtained.

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Abstract

The invention discloses an extra-weather-resistant matt fluorocarbon-polyester composite powder coating and a preparation method thereof. The powder coating is prepared from a component A and a component B in a ratio of 1:1-1:1.5 by means of dry mixing and grinding, wherein each of the component A and the component B contains a fluorocarbon resin and polyester resin dual-curing system. The extra-weather-resistant matt fluorocarbon-polyester composite powder coating has the advantages of simple technological formula, extra weather resistance, resistance to acid and alkali, capabilities of overcoming the shortcomings of poor adhesion and poor pigment filler wettability of a pure fluorocarbon powder coating and showing extra weather resistance by curing coats, long outdoor service life, low material use and maintenance integrated cost and the like.

Description

technical field [0001] The invention relates to a powder coating, in particular to a fluorocarbon-polyester composite super-weather-resistant matte powder coating and a preparation method thereof. Background technique [0002] Powder coating is a new type of solvent-free 100% solid powder coating, which has the characteristics of no solvent, no pollution, recyclable, environmental protection, saving energy and resources, reducing labor intensity and high mechanical strength of the coating film. Fluorocarbon powder coatings are recognized as super weather-resistant coatings at home and abroad, and their outdoor performance has been widely verified. However, due to the inherent deficiencies of pure fluorocarbon system powder coatings in terms of adhesion and wettability of pigments and fillers, coupled with their high material costs, the market application and promotion of pure fluorocarbon system powder coatings has been slow. Contents of the invention [0003] One of the ...

Claims

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Application Information

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IPC IPC(8): C09D175/06C09D5/03C09D7/12
CPCC08K3/22C08K5/34924C08K9/12C08K13/06C08K2003/2241C09D5/033C09D175/06
Inventor 梁泳田高庆福罗绵生刘士润
Owner GUANGZHOU KINTE IND
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