High-tear-resistance and high-heat-conductivity macromolecular interfacial material and preparation method

An interface material and polymer technology, which is applied in the field of high tear resistance and high thermal conductivity polymer interface material and its preparation, to achieve the effects of improving shock resistance and impact resistance, enhancing heat dissipation uniformity and prolonging service life.

Inactive Publication Date: 2016-07-06
东莞东超新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the heat generated by electronic equipment accumulates and increases rapidly. Under the ambient temperature, in order to ensure the normal operation of electronic components with high reliability for a long time, when the heat dissipation capacity becomes an important limiting factor affecting their service life
[0005] At present, there is no polymer interface material with high tear resistance and high thermal conductivity, which can be applied to automotive power battery modules to reduce the use of non-renewable resources

Method used

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  • High-tear-resistance and high-heat-conductivity macromolecular interfacial material and preparation method
  • High-tear-resistance and high-heat-conductivity macromolecular interfacial material and preparation method
  • High-tear-resistance and high-heat-conductivity macromolecular interfacial material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1, the interface material with high tear resistance and high thermal conductivity provided by this example includes the following components: 10-100 g of silicone oil with a vinyl content of 0.5-2.0%; 800-900 g of spherical alumina; silazane 0.5-1.5g quasi-coupling agent; 1-50g deionized water; 0-100g silicon carbide whiskers.

[0034] The particle size of the spherical alumina is D50=70-90 μm, D50=5-10 μm spherical powder, the particle size of the silicon carbide whiskers is D50=0.5-5 μm, and the spherical alumina and silicon carbide whiskers are mixed , the mixing ratio is: 70-90 μm: 5-10 μm: 0.5-5 μm=50-90%: 10%-40%: 1-10%.

[0035] Special vinyl silicone oil with low viscosity and suitable crosslinking density is used to improve the tear resistance of the material; high thermal conductivity spherical alumina powders with different particle sizes are selected as the main material of the heat conduction channel, and the gap between spherical alumina Adding a ...

Embodiment 2

[0044] Example 2, the preparation method of this example is basically the same as that of Example 1, the difference lies in: the preparation method of high tear resistance and high thermal conductivity polymer interface material, which includes the following steps:

[0045](1) Weigh 10g of silicone oil with 0.5% vinyl content, 1.5g of silazane coupling agent, 1-50g of deionized water, 850g of spherical alumina, and 50g of silicon carbide whiskers, and add them to a kneader heated under vacuum , the heating temperature of the kneader is 130°C, airtight kneading for 1.5 hours, vacuumizing and continuing to keep warm and kneading for 1 hour, cooling to room temperature and discharging to obtain a paste liquid mixture A;

[0046] (2) Add 3‰ of catalyst, 1% of hydrogen-containing silicone oil, and 1‰ of inhibitor to mixture A of paste liquid, stir evenly, vacuumize, and mold the material into a sheet under the conditions of 140°C and 5min to prepare high tear resistance Cracking hi...

Embodiment 3

[0047] Example 3, the preparation method of this example is basically the same as that of Example 1, the difference is: the preparation method of high tear resistance and high thermal conductivity polymer interface material, which includes the following steps:

[0048] (1) Weigh 100g of silicone oil with 1% vinyl content, 0.5g of silazane coupling agent, 1 to 50g of deionized water, and 800g of spherical alumina, and add them to a kneader heated by vacuum. 150°C, airtight kneading for 2.5 hours, evacuating and continuing to keep warm and kneading for 1.2 hours, cooling to room temperature and discharging to obtain a paste liquid mixture A;

[0049] (2) Add catalyst 5‰, hydrogen-containing silicone oil 7%, and inhibitor 5‰ to paste liquid mixture A, stir evenly, vacuumize, and mold the material into a sheet under the conditions of 130°C and 2min to obtain high tear resistance Cracking high thermal conductivity polymer interface material.

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Abstract

The invention discloses a polymer interface material with high tear resistance and high thermal conductivity, which comprises the following components: 100g of silicone oil with a vinyl content of 0.5-2.0%; 800-900g of spherical alumina; ~1.5g; deionized water 1~50g; silicon carbide whiskers 0~100g. The invention also discloses a preparation method of the interface material with high tear resistance and high thermal conductivity. The polymer interface material with high tear resistance and high thermal conductivity of the present invention uses vinyl silicone oil as the main body, spherical alumina powder as the main material of the heat conduction channel, and uses coupling agent, deionized water, and silicon carbide whiskers as fillers. Various factors such as filler type, content, particle size and preparation process are used to prepare special vinyl silicone oil with low viscosity and suitable crosslinking density, improve the tear resistance of the material, and obtain high tear resistance and high thermal conductivity polymer interface material . Used in automotive power battery modules to improve the shock resistance and impact resistance of the battery pack, enhance the uniformity of heat dissipation between battery cells, and prolong the service life.

Description

technical field [0001] The invention relates to the technical field of thermally conductive interface materials, in particular to a polymer interface material with high tear resistance and high thermal conductivity and a preparation method thereof. Background technique [0002] With the rapid development of the automobile industry, problems such as energy crisis and environmental pollution have become increasingly prominent. New energy vehicles represented by electric vehicles will become the mainstream direction of future automobile development due to their unique advantages over traditional vehicles in terms of energy efficiency, energy saving and emission reduction. As the core component of new energy vehicles, the safety performance of the power battery will have a direct or indirect impact on the overall performance of the vehicle. [0003] Polymer materials have the characteristics of light weight, chemical corrosion resistance, easy processing and molding, excellent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/05C08K9/10C08K7/18C08K7/10
CPCC08L83/04C08K2201/003C08L2205/025
Inventor 魏东
Owner 东莞东超新材料科技有限公司
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