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Thermosetting powder coating

A thermosetting powder and coating technology, applied in powder coatings, polyester coatings, coatings, etc., can solve the problems of shortening the service life of the coating film, reducing the mechanical properties of the coating film, cracking and embrittlement, etc., to improve moisture resistance, Effect of improving compatibility and improving low temperature crack resistance

Inactive Publication Date: 2020-05-12
江阴市玲珑高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when it is used in an outdoor environment, it is often affected by climatic factors such as rainwater and humidity, resulting in a decrease in the mechanical properties of the coating film, cracks and embrittlement. At the same time, water easily diffuses into the coating film of the polyester powder coating to make the polyester resin Hydrolysis of the ester group, which shortens the service life of the coating film

Method used

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Examples

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preparation example Construction

[0036] The preparation method of thermosetting powder coating comprises the following steps:

[0037] 1) After mixing the filler evenly, add tris(3-(triethoxysilyl)propyl)isocyanate and solvent isopropanol, stir and mix evenly to obtain the first mixture;

[0038] 2) Add the leveling agent into the first mixed solution, stir and mix, then add the dispersant, degasser and methyl trifluoropropyl silicone oil, and mix evenly to obtain the second mixture;

[0039] 3) adding the resin, ethylene-ethyl acrylate copolymer, tetrapropylene fluororubber, and ethylene glycol montanate into the second mixture, stirring and mixing to obtain the third mixture;

[0040] 4) After the third mixture is dried, it is finely ground to reach 400 mesh or more, and sieved to obtain the fourth mixture;

[0041] 5) Add curing agent, triphenyl phosphite, and carnauba wax to the fourth mixture, put it into a high-speed mixer and stir to make the materials evenly mixed, and obtain the fifth mixture;

[0...

Embodiment 1

[0045] A thermosetting powder coating, by weight, comprises the following components:

[0046]

[0047]

[0048] The resin is a silicone resin; the curing agent includes 2 parts of vinyltriamine, 3 parts of 1-decyl-2-ethylimidazole, 2 parts of trimethylhexamethylenediamine, 2 parts of diaminodiphenylmethane And 0.5 part of 3-hydroxy dodecanedioic acid; The leveling agent is an acrylic leveling agent; The acrylic leveling agent contains epoxy groups; The dispersant is polyethylene glycol fatty acid ester; The degassing agent includes 3 parts of hard Calcium fatty acid, 0.5 parts of polyoxyethylene lauryl ether, 2 parts of perfluoroalkyl phosphate; fillers include 2 parts of antimony oxide, 1 part of talc, 0.5 parts of boron nitride, and 2 parts of calcium hexaboride.

Embodiment 2

[0050] A thermosetting powder coating, by weight, comprises the following components:

[0051]

[0052]The resin is polyimide; the curing agent includes 3 parts of ethylenetriamine, 4 parts of 1-decyl-2-ethylimidazole, 3 parts of trimethylhexamethylenediamine, 3 parts of diaminodiphenyl Methane and 0.6 parts of 3-hydroxydodecanedioic acid; the leveling agent is an acrylic leveling agent; the acrylic leveling agent contains amide functional groups; the dispersant is sodium pyrophosphate; the degassing agent includes 4 parts of calcium stearate, 0.7 1 part of polyoxyethylene lauryl ether, 3 parts of perfluoroalkyl phosphate; fillers include 3 parts of antimony oxide, 2 parts of talc, 0.8 parts of boron nitride, and 3 parts of calcium hexaboride.

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Abstract

The invention discloses a thermosetting powder coating. The coating comprises, by weight, 60 to 65 parts of resin, 8 to 11 parts of an ethylene-ethyl acrylate copolymer, 3 to 5 parts of a curing agent, 2 to 4 parts of a leveling agent, 0.5 to 1 part of a dispersing agent, 0.2 to 0.3 part of a degassing agent, 10 to 15 parts of a filler, 1 to 3 parts of methyltrifluoropropyl silicone oil, 0.5 to 1part of tri(3-(triethoxysilyl)propyl)isocyanate, 0.5 to 1 part of carnauba wax and 0.2 to 0.4 part of ethylene glycol monophosphate. The thermosetting powder coating has excellent ultraviolet resistance, humidity resistance, ultraviolet resistance, outdoor exposure resistance, acid and alkali resistance and oil resistance, and the low-temperature crack resistance and high-temperature brittleness of a powder coating are improved.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to a thermosetting powder coating. Background technique [0002] Powder coating is a new type of coating that does not contain solvents and is applied in powder form to form a coating film. Compared with traditional solvent-based coatings, powder coatings emit almost zero organic solvent volatiles (VOC) during curing, avoiding environmental pollution; at the same time, powder coatings have high utilization rate, good coating performance and easy implementation Advantages such as automated coating have achieved rapid development in recent years. [0003] According to the properties of the film-forming substances of powder coatings, powder coatings can be divided into thermoplastic powder coatings and thermosetting powder coatings. Among them, polyester powder coatings are a kind of thermosetting powder coatings with excellent performance developed in recent years. They have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D179/08C09D167/06C09D123/08C09D183/08C09D5/03C09D7/61C09D7/63C09D7/65
CPCC08K2003/385C08L2201/08C08L2205/02C08L2205/035C09D5/033C09D167/06C09D179/08C09D183/04C08L23/0869C08L83/08C08L91/06C08K13/02C08K5/5465C08K5/103C08K3/2279C08K3/34C08K3/38
Inventor 张智峰柏勇民
Owner 江阴市玲珑高分子材料有限公司
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