Phase-change film temperature control material

A technology of phase-change materials and thin films, which is applied in the fields of modification by liquid cooling, modification by conduction heat transfer, cooling/ventilation/heating modification, etc. It can solve the problems that the temperature rise of electronic components cannot be effectively alleviated, and achieve excellent heat dissipation. Effects of management ability, improvement of thermal conductivity, and improvement of latent heat utilization rate

Active Publication Date: 2021-07-09
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the defect that the temperature rise of electronic components cannot be effectively alleviated in the high power density and compact space environment described in the above prior art, the present invention provides a phase change material film, and the temperature control material of the phase change film can meet the requirements of micro Requirements for passive cooling of small and high-power electronic components

Method used

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Embodiment 1

[0025] A phase-change film temperature control material has a three-layer structure, the middle layer is a phase-change microcapsule film, and the upper and lower layers are high thermal conductivity graphite films.

[0026] Preparation of phase change thin film temperature control material: use high thermal conductivity graphite film as substrate, put 0.544g n-tetradecane phase change microcapsule powder into a mold with an internal area of ​​40*100mm, and cover the top of the microcapsule with high thermal conductivity graphite film , pressurized by a tablet press, and the thickness is adjusted by rolling with a roller to make a phase change film temperature control material.

[0027] The phase change microcapsule film density of the obtained phase change film temperature control material is 0.744g / cm 3 , the thickness is 0.175mm.

Embodiment 2

[0029] A phase-change film temperature control material has a three-layer structure, the middle layer is a phase-change microcapsule film, and the upper and lower layers are high thermal conductivity graphite films.

[0030] Preparation of phase change thin film temperature control material: with high thermal conductivity graphite film as the substrate, put 0.552g of n-eicosane phase change microcapsule powder into a mold with an internal area of ​​40*100mm, and cover the upper part of the microcapsule with high thermal conductivity graphite film. It is pressed by a tablet press, and then rolled by a roller to adjust the thickness to make a phase change material film. The density of the obtained phase change microcapsule film is 0.732g / cm 3 , the thickness is 0.172mm.

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Abstract

The invention discloses a phase-change film temperature control material. The material is of a three-layer structure, the middle layer is a phase-change microcapsule film, and the upper layer and the lower layer are high-thermal-conductivity graphite films. The phase-change film temperature control material provided by the invention can strengthen the heat transfer capability of the phase-change film through the high heat-conducting property, and is matched with phase-change microcapsules to obtain excellent heat management performance. A phase-change film has good thermal conductivity and thermal stability, is stable in form, and has good flexibility at the same time. The material can be used in micro electronic equipment, an ideal heat management effect is achieved, and the service life of an electronic component is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of phase change materials, and more specifically, to a phase change thin film temperature control material and its preparation method and application. Background technique [0002] With the rapid development of 5G information technology, electronic devices tend to be miniaturized and high-power. While the volume of electronic products is continuously shrinking, the operating frequency of electronic devices is increasing sharply, which will generate a lot of heat during work. The problem of local heat concentration and instantaneous heat surge has become a major problem to be solved in the development of electronic technology. At the same time, due to the strict limitation of the internal space, traditional cooling methods such as cooling pipes or fans are difficult to use. In order to solve the above problems, phase change materials are gradually applied to the heat dissipation of electronic equipment. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K7/20
CPCH05K7/2029H05K7/2039
Inventor 吕树申赵一粟莫冬传
Owner SUN YAT SEN UNIV
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