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Phase change heat dissipation structure and manufacturing method thereof

A technology of heat dissipation structure and phase change, applied in cooling/ventilation/heating transformation, modification by conduction heat transfer, coating, etc., can solve the problems of inability to transfer heat, poor interface properties, affecting heat dissipation, etc., and achieve excellent flame retardant effect, improve high temperature resistance, good thermal conductivity

Inactive Publication Date: 2018-07-20
ZHANJIANG ZHENGXIN TECH SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, metal heat sinks are mostly used. Although metal heat sinks have high thermal conductivity, their interface properties are very poor. Affect heat dissipation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for manufacturing a phase-change heat dissipation structure, comprising:

[0027] Material preparation step: Weigh aluminum foil, flame-retardant and heat-conducting silica gel base material, and phase-change material base-material respectively; wherein, the flame-retardant and heat-conducting silica gel layer is prepared from the following raw materials in parts by weight: 6 parts of methyl vinyl silicone rubber, 18 parts of vinyl silica gel, 20 parts of dimethyl silicone oil, 1 part of hydrogen-containing silicone oil, 0.8 parts of platinum catalyst, 30 parts of aluminum hydroxide, 20 parts of magnesium hydroxide, 15 parts of nano-silica, and 15 parts of hollow glass microspheres.

[0028] Vulcanization step: evenly coat the flame-retardant and heat-conducting silica gel base material in the material preparation step on the top surface of the aluminum foil, and place it in a tunnel furnace for vulcanization. After the vulcanization is completed, a flame-retard...

Embodiment 2

[0033] A method for manufacturing a phase-change heat dissipation structure, comprising:

[0034] Material preparation step: Weigh aluminum foil, flame-retardant and heat-conducting silica gel base material, and phase-change material base-material respectively; wherein, the flame-retardant and heat-conducting silica gel layer is prepared from the following raw materials in parts by weight: 2 parts of methyl vinyl silicone rubber, 15 parts of vinyl silica gel, 18 parts of dimethyl silicone oil, 0.5 parts of hydrogen-containing silicone oil, 0.5 parts of platinum catalyst, 24 parts of aluminum hydroxide, 20 parts of magnesium hydroxide, 10 parts of nano-silica, and 10 parts of hollow glass microspheres.

[0035] Vulcanization step: evenly coat the flame-retardant and heat-conducting silica gel base material in the material preparation step on the top surface of the aluminum foil, and place it in a tunnel furnace for vulcanization. After the vulcanization is completed, a flame-ret...

Embodiment 3

[0040] A method for manufacturing a phase-change heat dissipation structure, comprising:

[0041] Material preparation step: Weigh aluminum foil, flame-retardant and heat-conducting silica gel base material, and phase-change material base-material respectively; wherein, the flame-retardant and heat-conducting silica gel layer is prepared from the following raw materials in parts by weight: 8 parts of methyl vinyl silicone rubber, 20 parts of vinyl silica gel, 25 parts of dimethyl silicone oil, 2 parts of hydrogen-containing silicone oil, 1 part of platinum catalyst, 30 parts of aluminum hydroxide, 40 parts of magnesium hydroxide, 20 parts of nano-silica, and 20 parts of hollow glass microspheres.

[0042] Vulcanization step: evenly coat the flame-retardant and heat-conducting silica gel base material in the material preparation step on the top surface of the aluminum foil, and place it in a tunnel furnace for vulcanization. After the vulcanization is completed, a flame-retardan...

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PUM

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Abstract

The invention discloses a phase change heat dissipation structure and a manufacturing method thereof. The phase change heat dissipation structure includes aluminium foil. The top side of the aluminiumfoil is coated in a flame-retardant heat conduction silica gel layer, and the bottom side of the aluminium foil is coated in a phase change material layer. The flame-retardant heat conduction silicagel layer is prepared by the following raw materials by weight: 2-8 parts of methyl vinyl silicone rubber, 15-20 parts of vinyl silica gel, 18-25 parts of dimethicone, 0.5-2 parts of hydrogen-containing silicone oil, 0.5-1 parts of platinum catalyst, 20-40 parts of aluminium hydroxide, 20-40 parts of magnesium hydroxide, 10-20 parts of nano silicon dioxide, and 10-20 parts of hollow glass bead. The phase change heat dissipation structure has the characteristics of exhibiting good thermal conductivity and good flame resistance and being flexible and compressible, and also has the phase change energy storage characteristic.

Description

technical field [0001] The invention relates to a heat dissipation structure, in particular to a phase change heat dissipation structure and a manufacturing method thereof. Background technique [0002] The heat sink is a device for cooling the heat-prone electronic components in electrical appliances. It is mostly made of aluminum alloy, brass or bronze into plates, sheets, and multi-sheets. For example, the CPU central processing unit in a computer needs to use a large Heat sinks, power tubes in TVs, line tubes, and power amplifier tubes in power amplifiers all use heat sinks. Generally, the heat sink should be coated with a layer of heat-conducting silicone grease on the contact surface between the electronic components and the heat sink during use, so that the heat emitted by the components can be more effectively transferred to the heat sink, and then dissipated into the surrounding air through the heat sink. [0003] In the prior art, metal heat sinks are mostly used....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K7/20C09D183/07C09D183/04C09D5/18C09D7/61C09D7/65
CPCH05K7/2039C08K2003/2224C08K2003/2227C08K2201/011C08L2201/02C08L2201/08C08L2205/025C08L2205/035C09D5/18C09D183/04C08L83/04C08K3/22C08K3/36C08K7/28
Inventor 邱振东
Owner ZHANJIANG ZHENGXIN TECH SERVICE CO LTD
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