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
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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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