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Graphene powder coating for radiator and preparation technology of graphene powder coating

A graphene powder and heat sink technology, applied in powder coatings, fireproof coatings, polyester coatings, etc., can solve the problems of inability to slip between layers, poor lubrication of coating films, and graphene does not have a layered structure. , to achieve the effect of good surface leveling, good hardness and strong adhesion

Inactive Publication Date: 2017-06-20
JIANGSU HUAGUANG POWDER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the technical method of combining epoxy resin and graphene used in powder coatings for radiator surface coating is still rarely reported, because graphene does not have a layered structure similar to graphite and cannot perform interlayer slippage , so that the components of the coating cannot be made to have good compatibility, and it is easy to make the overall lubricating effect of the coating film poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A kind of preparation method of graphene powder coating for radiator, it is characterized in that: this preparation method has the following steps:

[0017] (1) In parts by weight, the coating has the following formula: 30 parts of phenolic modified epoxy resin, 30 parts of hydroxyl saturated polyester resin, 0.2 part of curing accelerator, 15 parts of rutile titanium oxide, and 0.8 part of polybutyl acrylate , 0.8 part of anti-yellow benzoin, 0.5 part of polysiloxane defoamer, 0.8 part of crosslinking agent, 1 part of aminated graphene, 1.5 part of carboxylated nano-polytetrafluoroethylene, 0.4 part of hydrogenated castor oil; Put them in a high-speed mixing agitator in turn and mix them well and evenly for 10-12 minutes;

[0018] (2) Add the uniformly mixed material to the screw extruder with the temperature of 100°C and 110°C in Zone I and Zone II, and the screw rotation controlled by the host frequency of 32hz will fully melt and knead the material, and then extrude...

Embodiment 2

[0022] A kind of preparation method of graphene powder coating for radiator, it is characterized in that: this preparation method has the following steps:

[0023] (1) 40 parts of phenolic modified epoxy resin, 45 parts of hydroxyl saturated polyester resin, 0.6 parts of curing accelerator, 25 parts of rutile titanium oxide, 1.2 parts of polybutyl acrylate, 1.2 parts of anti-yellow benzoin, polysiloxane disinfectant 1.2 parts of foaming agent, 1.3 parts of crosslinking agent, 2 parts of aminated graphene, 5 parts of carboxylated nano polytetrafluoroethylene, 0.8 part of hydrogenated castor oil;

[0024] (2) Same as embodiment one step (2).

[0025] The powder coating is sprayed on the surface of the radiator by electrostatic spraying construction method, and it can be fully cured after 7 minutes at 205°C.

[0026] After testing: the D50 particle size of the powder coating is 38-42μm; the impact resistance of the cured coating film (GB / T1732-1993): 50cm forward and recoil pass...

Embodiment 3

[0028] A kind of preparation method of graphene powder coating for radiator, it is characterized in that: this preparation method has the following steps:

[0029] (1) 35 parts of phenolic modified epoxy resin, 40 parts of hydroxyl saturated polyester resin, 0.4 part of curing accelerator, 20 parts of rutile titanium oxide, 1.0 part of polybutyl acrylate, 1.0 part of anti-yellow benzoin, polysiloxane disinfectant 0.8 parts of foaming agent, 1.0 part of crosslinking agent, 1.5 parts of aminated graphene, 4 parts of carboxylated nano polytetrafluoroethylene, 0.7 part of hydrogenated castor oil;

[0030] (2) Same as embodiment one step (2).

[0031] The powder coating is sprayed on the surface of the radiator by electrostatic spraying construction method, and it can be fully cured after 9 minutes at 200°C.

[0032]After testing: the D50 particle size of the powder coating is 38-42μm; the impact resistance of the cured coating film (GB / T1732-1993): 50cm forward and recoil pass; h...

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Abstract

The invention relates to a graphene powder coating for a radiator and a preparation technology of the graphene powder coating. The graphene powder coating is prepared from the following components: phenolic aldehyde modified epoxy resin, hydroxyl saturated polyester resin, a solidification accelerator, rutile titanium oxide, butyl polyacrylate, yellowing resisting benzoin, a polysiloxane defoamer, a crosslinking agent, aminated graphene, carboxylic nanometer polytetrafluoroethylene and hydrogenated castor oil. As for the powder coating provided by the invention, the hydroxyl saturated polyester resin can enable the coating to ensure optimal leveling while the solidification speed is slowed down; combined use of the graphene and polytetrafluoroethylene can enable the whole coating to have better hardness, wear resistance and lubricating effect, be suitable for coating the surfaces of radiator type household appliances and be better in weatherability and yellowing resistance; the color of a coating film cannot change under the solidification condition with the temperature being 195-205 DEG C, and the solidified coating film cannot yellow permanently under the high-temperature working environment of the radiator after being solidified, is good in salt fog resistance, light fastness and shock resistance and is suitable for being further popularized and applied.

Description

technical field [0001] The invention relates to the technical field of formulation design of powder coatings for radiators, more specifically, to a graphene powder coating for radiators and a preparation process thereof. Background technique [0002] Heat dissipation paint is a special paint that can improve the heat dissipation efficiency of the surface of the object and reduce the temperature of the system. Powder coating is a new type of solvent-free 100% solid powder coating that has gradually emerged in recent years. It has the advantages of high utilization rate, easy coating, corrosion resistance and environmental protection. It has been widely used in the fields of modern spraying and anti-corrosion heat dissipation. Applying heat-dissipating powder coatings to electrical casings or electronic devices can significantly improve the heat dissipation efficiency of electrical appliances or electronic devices. The radiator is a common household appliance. Because it need...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D167/00C09D5/03C09D7/12
CPCC09D163/00C08L2201/08C08L2205/035C08L2312/00C09D5/031C09D5/033C09D5/18C09D7/62C09D7/65C09D167/00C08L67/00C08L33/08C08L83/04C08L27/18C08L91/00C08K9/04C08K3/04C08K2003/2241C08L63/00
Inventor 潘建良
Owner JIANGSU HUAGUANG POWDER
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