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Super-weather-resistance powder coating for electrostatic spraying and preparation method thereof

A technology of electrostatic spraying and powder coatings, applied in powder coatings, conductive coatings, polyester coatings, etc., can solve the problems of poor substrate bonding, restrictions on the development of powder coatings for electrostatic spraying, complex dispersion processes, etc.

Active Publication Date: 2017-05-03
TIANCHANG JINLING ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, in order to disperse carbon nanotubes in the polymer film-forming matrix, not only a complicated dispersion process is required, but also there are a series of problems such as poor bonding with the matrix, which greatly limits the development of powder coatings for electrostatic spraying.

Method used

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  • Super-weather-resistance powder coating for electrostatic spraying and preparation method thereof

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Effect test

Embodiment 1

[0020] A powder coating for super weather-resistant electrostatic spraying, comprising the following raw materials in parts by weight: 50 parts of polyester resin, 35 parts of alkyd resin, 3 parts of polyester-coated carbon nanotubes, 6 parts of nano-titanium dioxide, and 1 part of nano-zinc oxide , 3 parts of aluminum nitride, 0.5 parts of phosphotungstic acid, 2 parts of quartz, 5 parts of bauxite, 6 parts of vinyltriethoxysilane, 5 parts of titanium dioxide, 2 parts of benzoin, polyether modified organosiloxane 0.5 parts of solution, 1 part of polyacrylate polymer, 1 part of propylene glycol methyl ether acetate, 10 parts of β-hydroxyalkylamide;

[0021] Wherein, the polyol monomer adopted in the synthetic method of the polyester resin is neopentyl glycol, and the polyacid monomer adopted is terephthalic acid; the vegetable oleic acid monomer adopted in the synthetic method of the alkyd resin It is soybean oil fatty acid, the polyol monomer used is pentaerythritol, and the ...

Embodiment 2

[0024] A powder coating for super weather-resistant electrostatic spraying, comprising the following raw materials in parts by weight: 80 parts of polyester resin, 15 parts of alkyd resin, 15 parts of polyester-coated carbon nanotubes, 2 parts of nano-titanium dioxide, and 5 parts of nano-zinc oxide , 1 part of aluminum nitride, 2 parts of phosphotungstic acid, 0.5 part of quartz, 15 parts of bauxite, 2 parts of vinyltriethoxysilane, 10 parts of titanium dioxide, 1 part of benzoin, alkyl modified organosiloxane 2 parts of solution, 0.1 part of polymer silicone, 5 parts of propylene glycol methyl ether acetate, 4 parts of β-hydroxyalkylamide;

[0025] Wherein, the polyol monomer adopted in the synthetic method of the polyester resin is ethylene glycol and trimethylolpropane, and the polybasic acid monomer adopted is isophthalic acid; The vegetable oleic acid monomer is linolenic acid, the polyol monomers used are pentylene glycol and trimethanol propane, and the polyacid monome...

Embodiment 3

[0028] A powder coating for super weather-resistant electrostatic spraying, comprising the following raw materials in parts by weight: 60 parts of polyester resin, 30 parts of alkyd resin, 5 parts of polyester-coated carbon nanotubes, 5 parts of nano-titanium dioxide, and 3 parts of nano-zinc oxide , 2 parts of aluminum nitride, 0.8 parts of phosphotungstic acid, 1.6 parts of quartz, 8 parts of bauxite, 5 parts of vinyltriethoxysilane, 7 parts of titanium dioxide, 1.8 parts of benzoin, 0.8 parts of acrylate copolymer solution, 0.7 parts of fluorine-modified acrylate polymer, 3 parts of propylene glycol methyl ether acetate, and 8 parts of β-hydroxyalkylamide;

[0029] Wherein, the polyhydric alcohol monomer adopted in the synthetic method of polyester resin is trimethylolethane and glycerin, the polybasic acid monomer adopted is adipic acid; In the synthetic method of described alkyd resin, adopt The vegetable oleic acid monomer is dehydrated ricinoleic acid, the polyol monome...

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Abstract

The invention relates to a super-weather-resistance powder coating for electrostatic spraying and a preparation method thereof. The powder coating comprises the following raw materials of, by weight, 50-80 parts of polyester resin, 15-35 parts of alkyd resin, 3-15 parts of polyester-coated carbon nanotubes, 2-6 parts of nano-titanium dioxide, 1-5 parts of nano-zinc oxide, 1-3 parts of aluminum nitride, 0.5-2 parts of phosphotungstic acid, 0.5-2 parts of quartz, 5-15 parts of bauxite, 2-6 parts of vinyltriethoxysilane, 5-10 parts of titanium dioxide, 1-2 parts of benzoin, 0.5-2 parts of leveling agents, 0.1-1 part of auxiliary agent, 1-5 parts of propylene glycol methyl ether acetate, 4-10 parts of beta-hydroxyalkylamide. According to the provided super-weather-resistance powder coating for electrostatic spraying and the preparation method thereof, on the premise that a good electrostatic spraying effect of the powder coating is ensured, the weather resistance of the coating is greatly improved.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a super weather-resistant powder coating for electrostatic spraying and a preparation method thereof. Background technique [0002] Electrostatic spraying uses the principle of high-voltage electrostatic corona electric field. The metal diversion cup on the spray gun head is connected to a high-voltage negative charge, and the workpiece to be coated is grounded to form a positive electrode. A strong electrostatic field is formed between the spray gun and the workpiece. When the carrier gas (compressed air) sends the powder coating from the powder supply barrel to the diversion cup of the spray gun through the powder delivery pipe, dense charges are generated around it, and the powder is negatively charged. Under the action of electrostatic force and compressed air, The powder is evenly adsorbed on the workpiece, and after heating, the powder is melted and solidified (or plasti...

Claims

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Application Information

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IPC IPC(8): C09D167/02C09D167/08C09D5/03C09D5/24C09D7/12
CPCC08K2201/011C08L2201/04C08L2205/02C08L2205/03C08L2205/035C09D5/033C09D5/24C09D167/02C08L67/08C08K13/06C08K9/10C08K7/24C08K2003/2241C08K3/36C08K2003/2296
Inventor 茆文斌
Owner TIANCHANG JINLING ELECTRONICS
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