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A kind of preparation method of mobile phone rear cover cooling film

A mobile phone back cover and heat-dissipating film technology, which is applied to branch equipment, telephone structure, electrical equipment structural parts, etc. Not easy to foam, good heat dissipation, good catalytic effect

Inactive Publication Date: 2018-10-26
湖南恒荣电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention aims to solve the defects in the prior art that the heat dissipation film of the back cover of the mobile phone is not firmly pasted, the processing efficiency is low, and the heat dissipation effect is poor, and the heat dissipation film of the back cover of the mobile phone is provided with firm adhesion, high preparation efficiency, and good heat dissipation effect. preparation method

Method used

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Embodiment Construction

[0018] The content of the present invention will now be described in detail in combination with specific embodiments.

[0019] The preparation method of the heat dissipation film of the mobile phone back cover of the present invention mainly includes two steps: step 1, adopting the electroless nickel plating method to plate a layer of metal nickel layer on the part of the mobile phone back cover that needs to be pasted with the heat dissipation film, and step 2, in step 1 A graphene oxide layer is deposited on the prepared metal nickel layer, and then the graphene oxide layer is reduced to a graphene layer by an electrochemical method.

[0020] The first step includes chemical degreasing, roughening, activation, and electroless nickel plating. The function of chemical degreasing is to remove the oil stain on the surface of the back cover of the mobile phone to make the surface hydrophilic. The process parameters are degreasing powder 10-20g / L, sodium hydroxide 2-5g / L, temperat...

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Abstract

The invention discloses a preparation method of a heat radiating film of a mobile phone rear cover, comprising following steps: step 1, using a chemical nickel-plating method to plate a layer of metal nickel layer at the part of the mobile phone rear cover needing to be adhered with the heat radiating film; step 2, depositing a layer of graphene oxide layer on the metal nickel layer prepared in the step 1, and using an electrochemical method to reducing the graphene oxide layer into a graphene layer. In adoption of the method of the invention, the heat radiating film and the mobile phone rear cover are tightly adhered; the film preparing efficiency is high; the speed is fast; the heat radiating effect of the heat radiating film is good; the heat radiating film is applicable to mobile phone rear covers of various shapes and is applicable to batched production.

Description

technical field [0001] The invention belongs to the technical field of heat dissipation materials, in particular to a method for preparing a heat dissipation film suitable for the back cover of a mobile phone. Background technique [0002] When the mobile phone works for a long time, the internal components of the mobile phone will heat up, and the battery will generate the most heat. If the heat in the mobile phone is not dissipated in time, when the temperature reaches a certain level, the parts in the mobile phone will burn out, and the components on the motherboard are the most likely to burn out. How to dissipate the heat in the mobile phone is a bottleneck in the design of existing mobile phones. [0003] In high-end mobile phones, a heat sink is designed on the mobile phone shell, which can effectively dissipate the heat in the mobile phone. Most of the existing heat sinks are composed of graphite. Graphene films have better application prospects in the field of hea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M1/02H05K7/20C23C18/32C01B32/20
CPCC23C18/32H04M1/0206H05K7/20436
Inventor 刘丽蓉
Owner 湖南恒荣电子科技有限公司
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