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Super-weather-resistant thermosetting powder coating

A thermosetting powder, super weather-resistant technology, applied in powder coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor weather resistance, poor wettability and adhesion, etc., to improve thermal stability and Weather resistance, excellent outdoor exposure performance, the effect of improving low temperature cracking performance and high temperature flexibility

Inactive Publication Date: 2020-05-01
江阴市玲珑高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing thermosetting powder coatings have poor wetting and adhesion, and poor weatherability

Method used

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  • Super-weather-resistant thermosetting powder coating
  • Super-weather-resistant thermosetting powder coating
  • Super-weather-resistant thermosetting powder coating

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] A preparation method of super weather-resistant thermosetting powder coating:

[0033] Silicone modified polyurethane resin, polyphenylene sulfide, curing agent, polyether modified organosiloxane, dispersant, filler, ethylhexyl palmitate, dialkyl citrate, weathering agent, β-( 3,4-epoxycycloalkyl)alkyltrialkoxysilane, polyoxyethylene fatty alcohol ether, dioctyltin, N,N'-diethylpiperazine, 2,4,4-trimethyl- Add 2-pentene into a high-speed stirring pot, stir for 3 to 6 minutes, extrude through a reciprocating damping single-screw extruder, cool and break into fine pieces, add the pieces into air classification, grind and sieve to obtain Glue-resistant super weather-resistant powder coating.

Embodiment 1

[0036] A super-weather-resistant thermosetting powder coating, comprising the following components in parts by weight:

[0037]

[0038]

[0039] The curing agent includes 2 parts of diaminocyclohexane, 3 parts of diethylenetriamine, and 2 parts of trimethylhexamethylenediamine; the dispersant is octadecylamide; the filler includes 2 parts of vanadium nitride, 1 part of titanium carbide, 0.5 parts aluminum boride; weathering agent includes 2 parts Nb 4 AlC 3 , 3 copies of Ce 0.8 Gd 0.2 o 1.9 and 1 part of yttrium oxide; the number average molecular weight of the silicone-modified polyurethane resin is 10,000.

Embodiment 2

[0041] A super-weather-resistant thermosetting powder coating, comprising the following components in parts by weight:

[0042]

[0043]

[0044] The curing agent includes 3 parts of diaminocyclohexane, 4 parts of diethylenetriamine, and 3 parts of trimethylhexamethylenediamine; the dispersant is vinylbisstearamide; the filler includes 3 parts of vanadium nitride, 2 parts Titanium carbide, 0.6 parts aluminum boride; weathering agent includes 3 parts Nb 4 AlC 3 , 4 copies of Ce 0.8 Gd 0.2 o 1.9 and 2 parts of yttrium oxide; the number average molecular weight of the silicone-modified polyurethane resin is 20,000.

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Abstract

The invention discloses a super-weather-resistant thermosetting powder coating. The super-weather-resistant thermosetting powder coating comprises the following components in parts by weight: 40 to 50parts of organic silicon modified polyurethane resin, 5 to 7 parts of polyphenylene sulfide, 6 to 8 parts of a curing agent, 2 to 4 parts of polyether modified organosiloxane, 1 to 3 parts of a dispersant, 10 to 15 parts of a filling material, 0.2 to 0.4 part of ethylhexyl palmitate, 0.5 to 0.8 part of dialkyl citrate, 12 to 14 parts of a weather-resistant agent, 1 to 2 parts of beta-(3,4-epoxy cycloalkyl)alkyl trialkoxy silane and 0.2 to 0.4 part of polyoxyethylene fatty alcohol ether. The super-weather-resistant thermosetting powder coating provided by the invention has excellent outdoor exposure performance, impact resistance, adhesive force and weather resistance.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to a super weather-resistant thermosetting powder coating. Background technique [0002] Thermosetting powder coatings have become the "4E type" (high production efficiency, excellent coating performance, Eco-friendly, economical) coatings. At present, it is mainly used in metal coating, household appliances, automobiles, aluminum materials and other fields. According to statistics, the consumption of thermosetting powder coatings in my country was 1.05 million tons in 2012, 1.12 million tons in 2013, 1.24 million tons in 2014, 1.35 million tons in 2015, and 1.42 million tons in 2016. The annual sales volume reaches 1.605 million tons, showing an increasing trend year by year. Thermosetting powder coatings mainly include epoxy resin powder coatings, polyester powder coatings, polyurethane powder coatings, acrylic powder coatings, fluorocarbon powder coatings, hybrid powder...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/03C09D7/63C09D7/65C09D7/47
CPCC08L2201/08C08L2205/035C09D5/033C09D175/04C08L81/02C08L83/12C08L71/02C08K13/02C08K5/101C08K5/11C08K5/5435
Inventor 张智峰柏勇民
Owner 江阴市玲珑高分子材料有限公司