Graphene powder coating used for led lamps and preparation method of graphene powder coating

A technology of graphene powder and LED lamps, applied in powder coatings, fireproof coatings, coatings, etc., can solve the problems of reducing the stability and strength of the coating film, reducing the protection effect of the substrate, and poor compatibility with the polymer matrix. Improve uniform stability and mechanical strength, improve surface activity, and reduce production costs

Inactive Publication Date: 2017-12-22
温州市赢创新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, in order to improve the heat dissipation performance of powder coatings, various heat dissipation additives are often added to it, including carbon nanotubes, aluminum nitride, silicon nitride, aluminum oxide, beryllium oxide, magnesium oxide, silicon carbide, etc. These traditional heat dissipation aids The principle of heat conduction of the agent is roughly: its own high thermal conductivity or the formation of connected channels inside the polymer matrix to improve the heat dissipation effect, but these inorganic fillers have poor compatibility with the polymer matrix, which easily reduces the stability and strength of the coating film. Reduced protective effect on the substrate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A graphene powder coating for LED lamps, which is composed of the following parts by weight of raw materials:

[0026] Graphene oxide 20, sodium tripolyphosphate 2, sodium myristate soap 4, stannous sulfate 0.2, isooctyl tin dimethyl dimercaptoacetate 0.1, polyethylene wax 7, high density polypropylene 120, heat dissipation rubber powder 9 , Ricinoleic acid 3, Alkanolamide 1.

[0027] The heat-dissipating rubber powder is composed of the following raw materials in parts by weight:

[0028] Dimethylaminopropylamine 1, waste rubber powder 20, 1-hydroxyethyl-2-oleyl imidazoline 2, diatomaceous earth 14, isopropanol 6, barium stearate 2.

[0029] The method for preparing heat-dissipating rubber powder includes the following steps:

[0030] (1) Take 1-hydroxyethyl-2-oleyl imidazoline, add it to 16 times its weight in absolute ethanol, stir evenly, add waste rubber powder, heat and stir at 65℃ for 2 hours, filter, and remove the precipitate Wash with water and dry at room temperature...

Embodiment 2

[0040] A graphene powder coating for LED lamps, which is composed of the following parts by weight of raw materials:

[0041] Graphene oxide 16, sodium tripolyphosphate 1, sodium myristate soap 3, stannous sulfate 0.1, isooctyl tin dimethyl dimercaptoacetate 0.07, polyethylene wax 4, high density polypropylene 110, heat dissipation rubber powder 7 , Ricinoleic acid 2, Alkanolamide 0.7.

[0042] The heat-dissipating rubber powder is composed of the following raw materials in parts by weight:

[0043] Dimethylaminopropylamine 0.7, waste rubber powder 14, 1-hydroxyethyl-2-oleyl imidazoline 1, diatomaceous earth 10, isopropanol 4, barium stearate 1.

[0044] The method for preparing heat-dissipating rubber powder includes the following steps:

[0045] (1) Take 1-hydroxyethyl-2-oleyl imidazoline, add it to 10 times its weight in absolute ethanol, stir evenly, add waste rubber powder, stir at 60°C for 1 hour, filter, and remove Wash with water and dry at room temperature to obtain modified ...

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Abstract

The invention discloses a graphene powder coating used for led lamps. The coating is made from, by weight part, 16-20 of oxidized graphene, 1-2 of sodium tripolyphosphate, 3-4 of sodium myrastate, 0.1-0.2 of stannous sulfate, 0.07-0.1 of tin dimethyl isooctyl dimercaptoacetate, 4-7 of polyethylene wax, 110-120 of high-density polypropylene, 7-9 of heat dissipation rubber powder, 2-3 of ricinoleic acid, and 0.7-1 of alkanolamide. The oxidized graphene is dispersed with amide, and the dispersed oxidized graphene is added to polypropylene, so that agglomeration is effectively reduced, and the uniform stability and mechanical strength of the final coating product are improved.

Description

Technical field [0001] The invention belongs to the field of coatings, and specifically relates to a graphene powder coating for LED lamps and a preparation method thereof. Background technique [0002] Thermal conductive coatings are widely used in computers, laptops, LED lighting, communications, rectifiers, medical and industrial equipment and other fields that require heat dissipation, and are mainly coated on the surface of radiators; [0003] At present, the heat dissipation coatings produced are generally used for the heat dissipation of the components of CPU and other electronic products and the heat dissipation of LED lamps. The requirements for the painting medium are high, and the adhesion to the surface of rough and loose objects is not strong, and the use effect is not ideal. The scope of application is small; [0004] Powder coating is a new type of solvent-free 100% solid powder coating. It has the characteristics of solvent-free, pollution-free, recyclable, environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D123/12C09D5/03C09D7/12
CPCC08K2003/324C08L2205/02C08L2205/03C09D5/033C09D5/18C09D123/12C08L23/06C08L21/00C08K13/06C08K9/04C08K7/26C08K3/04C08K3/32
Inventor 方万漂周志阳
Owner 温州市赢创新材料技术有限公司
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