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Heat-conducting wave absorber as well as preparation method and application thereof

A wave absorber, integrated technology, applied in cooling/ventilation/heating transformation, electrical components, magnetic field/electric field shielding and other directions, can solve problems such as low thermal conductivity and thickness space influence

Pending Publication Date: 2021-05-28
SUZHOU RIDEA MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the double-layer structure has an impact on the thickness space, and the use of double-sided adhesive also lowers the overall thermal conductivity

Method used

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  • Heat-conducting wave absorber as well as preparation method and application thereof
  • Heat-conducting wave absorber as well as preparation method and application thereof
  • Heat-conducting wave absorber as well as preparation method and application thereof

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preparation example Construction

[0026] The embodiment of the present invention also discloses a method for preparing a heat-conducting absorber, which includes the following steps:

[0027] S10), the surface of flake graphite powder is activated to obtain the graphite powder after surface activation;

[0028] S20), adding the graphite powder obtained in the above steps S10) to the iron-cobalt soft magnetic alloy precursor solution, wherein the iron-cobalt soft magnetic alloy precursor solution includes a reducing agent and a chelating agent, Fe in the iron-cobalt soft magnetic alloy precursor solution 2+ and Co 2+ Combined with chelating agent respectively, and under the action of reducing agent, it is reduced into one iron-cobalt soft magnetic alloy layer chemically deposited on graphite powder;

[0029] S30), taking out the reaction product in the above step S20), filtering, cleaning and drying to obtain a composite powder;

[0030] S40), the composite powder in the above step S30) is rolled to prepare a...

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Abstract

The invention discloses a heat-conducting wave absorber as well as a preparation method and application thereof. The heat-conducting wave absorber is prepared from composite powder consisting of flake graphite powder and an iron-cobalt soft magnetic alloy, and the composite powder comprises an iron-cobalt soft magnetic alloy layer which is integrally deposited on the flake graphite powder. Compared with a common and conventional natural graphite film, the heat-conducting wave absorber has higher heat conductivity, meanwhile, the wave-absorbing performance is embodied within the frequency range of 2-18 GHz, and therefore the heat-conducting wave can serve as an electromagnetic wave shielding material and / or a heat-conducting material and has wide application prospects in the electronic communication industry.

Description

technical field [0001] The invention relates to a heat-conducting wave-absorbing material, in particular to a heat-conducting wave-absorbing body, and also relates to a preparation method and application of the heat-conducting wave-absorbing body. Background technique [0002] As the computing speed of electronic products becomes faster and more functional, their integration level and assembly density continue to increase, resulting in a sharp increase in their work power consumption and heat generation; at the same time, affected by the trend of high frequency and high integration The influence of electromagnetic wave interference among various components is becoming more and more serious, which makes heat dissipation and electromagnetic shielding become two major problems that electronic components must solve. For heat dissipation solutions, heat conduction or heat dissipation materials are often used, and materials such as natural graphite, synthetic graphite, and copper ...

Claims

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Application Information

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IPC IPC(8): H05K9/00H05K7/20
CPCH05K9/0081H05K7/20
Inventor 刘付胜聪周作成
Owner SUZHOU RIDEA MATERIAL TECH
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