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A high-efficiency heat dissipation coating and its application method

A heat-dissipating coating and high-efficiency technology, applied in the coating and other directions, can solve problems such as affecting the reliability of electronic equipment, affecting and shortening the service life of electrical equipment, and achieve the effect of uniform heat dissipation, high infrared radiation performance, and high thermal conductivity.

Active Publication Date: 2018-04-06
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the working process of electronic equipment, if the large amount of heat generated cannot be dissipated in time, it will affect the normal operation reliability of electronic equipment and shorten the service life of electrical equipment.

Method used

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  • A high-efficiency heat dissipation coating and its application method
  • A high-efficiency heat dissipation coating and its application method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A method for applying a high-efficiency heat dissipation coating, the method comprising the steps of:

[0032] (1). Clean and dry the metal heat sink surface of electronic equipment with deionized water;

[0033] (2). According to the composition and mass percentage of the material, 10% of ultra-fine graphite, 7% of infrared radiation powder, 35% of binder, 47% of solvent and 1% of dispersant,

[0034] The sum of the distribution ratios of the various components is 100%, and the above-mentioned ultrafine graphite, infrared radiation powder, binding agent, and dispersant

[0035] Mix with a solvent, mix the ingredients, and stir evenly to obtain a slurry;

[0036] Wherein the binder is epoxy modified acrylic resin; the solvent is xylene; the particle size of the infrared radiation powder is 1.3 μm, and the composition and mass percentage are:

[0037] MnO 39.7%

[0038] SiO 2 29.7%

[0039] MgO 9.3%

[0040] K 2 O 5.7%

[0041] CaO 4.7%

[0042] ZnO 4.2%

[00...

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Abstract

The invention relates to an efficient heat dissipation coating and an application method thereof. The heat dissipation coating is prepared from, by mass, 5%-20% of superfine graphite, 1%-10% of infrared radiation powder, 20%-50% of a bonding agent, 30%-50% of a solvent and 0.1%-3% of a dispersing agent, wherein the proportion sum of all the components is 100%. A preparation method of the efficient heat dissipation coating comprises the steps that the weighted superfine graphite, infrared radiation powder, bonding agent, dispersing agent and solvent are mixed and then stirred to be uniform to obtain slurry; the slurry is uniformly applied to the surfaces of metal heat dissipation fins of electronic equipment through a spraying or immersing method, natural curing is conducted under the room temperature condition, and heat preservation is conducted for 2 h. The efficient heat dissipation coating has the heat conductivity coefficient approaching to that of graphite and can effectively decrease the surface temperature of the electronic equipment, improve the operating reliability of the electronic equipment and prolonging the service life of the electronic equipment; the full-wave band radiance is stable at 0.96 or above for a long term; when the heat dissipation fins of the electronic equipment are in a working state under the temperature of 80 DEG C to 100 DEG C, the surface temperature of the heat dissipation fins coated with the efficient heat dissipation coating is decreased by 8 DEG C-10 DEG C than that of the heat dissipation fins not coated with the efficient heat dissipation coating.

Description

technical field [0001] The invention relates to a preparation method and application of a high-efficiency heat dissipation coating, belonging to the technical field of heat dissipation coatings. Background technique [0002] At present, in the working process of the electronic equipment, improving the heat dissipation efficiency of the electronic equipment is a focus of attention. The performance, reliability and lifetime of electronic equipment is inversely proportional to the temperature of the operating environment. During the working process of electronic equipment, if the large amount of heat generated cannot be dissipated in time, it will affect the normal operation reliability of electronic equipment and shorten the service life of electrical equipment. For this reason, it has become an urgent need to prepare a kind of high-efficiency heat dissipation coating on the surface of electronic equipment. Contents of the invention [0003] The purpose of the present inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D7/61
CPCC08K3/00C08K3/04C08K3/22C08K3/36C08K2003/2206C08K2003/222C08K2003/2227C08K2003/2262C08K2003/2272C08K2003/2296C09D7/61C09D133/00
Inventor 甄强李政肖南
Owner SHANGHAI UNIV
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