Heat conducting double sided tape and preparation process thereof

A technology of double-sided tape and thermal conductive layer, applied in the direction of adhesives, non-polymer adhesive additives, film/sheet adhesives, etc. problem, to achieve the effect of good thermal conductivity and improved thermal conductivity

Inactive Publication Date: 2014-03-19
常熟市富邦胶带有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At the same time, when using a thermally conductive agent with a relatively large particle size, due to the relatively large gap between the thermally conductive agents during contact, it is easy to be absorbed by residual air or filled by thermally conductive adhesive with low thermal conductivity, which affects the thermal conductivity of the entire system. In view of these reasons, the Chinese invention patent with publication number 102260466A "A double-sided insulating and heat-conducting adhesive tape and its preparation method" proposes to use nano-materials as heat-conducting agents, but ignores the problem of agglomeration of nano-materials

Method used

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  • Heat conducting double sided tape and preparation process thereof

Examples

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experiment example 1

[0029] Formula: acrylic acid polymer: 85%, graphite: 15%, and the graphite is graphite with a particle size of 4um.

[0030] Preparation process: a. Put the graphite in a vacuum drying oven to dry for half an hour;

[0031] b. Weigh the nano-graphite powder and add it to the silane coupling agent KH-550 for surface modification, and stir for 24 hours during the modification process;

[0032] c. After centrifugation, filtration and other steps, the surface-modified graphite powder is put into a vacuum drying oven for drying.

[0033] d. Add the dried graphite powder into the acrylic glue and stir for 2 hours to ensure uniform stirring.

[0034] e. Gluing: Use gluing equipment to evenly coat the evenly stirred glue on the release film, and pay attention to controlling the thickness of the glue to 0.05mm during the gluing process.

[0035] f. Detect the thermal conductivity of the prepared thermally conductive double-sided tape, testing equipment: thermal conductivity tester

...

experiment example 2

[0039] Formula: acrylic acid polymer: 64%, graphite: 36%, and the graphite is graphite with a particle size of 4um.

[0040] Preparation process: a. Put the graphite in a vacuum drying oven to dry for half an hour;

[0041] b. Weigh the nano-graphite powder and add it to the silane coupling agent KH-550 for surface modification, and stir for 24 hours during the modification process;

[0042] c. After centrifugation, filtration and other steps, the surface-modified graphite powder is put into a vacuum drying oven for drying.

[0043] d. Add the dried graphite powder into the acrylic glue and stir for 2 hours to ensure uniform stirring.

[0044] e. Gluing: Use gluing equipment to evenly coat the evenly stirred glue on the release film, and pay attention to controlling the thickness of the glue to 0.05mm during the gluing process.

[0045] f. Detect the thermal conductivity of the prepared thermally conductive double-sided tape, testing equipment: thermal conductivity tester

...

experiment example 3

[0052] Formulation: Acrylic Polymer: 50%; Graphite: 20%, Boron Nitride: 10%, Aluminum Nitride: 10% and Aluminum Oxide: 10%. The graphite adopts graphite with a particle diameter of 4um, the boron nitride adopts boron nitride with a particle diameter of 4um, the boron nitride adopts boron nitride with a particle diameter of 4um, and the described aluminum oxide adopts a particle diameter of 4um. Aluminum oxide of 4um.

[0053] Preparation process: a. Put graphite, boron nitride, aluminum nitride and aluminum oxide into a vacuum drying oven and dry for half an hour;

[0054] b. Weigh a certain amount of graphite, boron nitride, aluminum nitride and aluminum oxide and add them to KH-550 or NDZ-131 for surface modification, and stir for 24 hours during the modification process;

[0055] c. After centrifugation, filtration and other steps, the surface-modified graphite, boron nitride, aluminum nitride and aluminum oxide mixed powder is put into a vacuum drying oven for drying.

...

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Abstract

The invention mainly relates to a heat conducting double sided tape and a preparation process thereof. The heat conducting double sided tape comprises two release paper layers and a heat conducting layer, wherein the release paper layers respectively cover the front and back faces of the heat conducting layer, and the heat conducting layer comprises the following components in percentage by weight: 55-85% of acrylic polymer, 10-20% of graphite, 1-10% of boron nitride, 1-10% of aluminum nitride and 1-10% of aluminum oxide. The graphite, boron nitride, aluminum nitride and aluminum oxide powders are uniformly dispersed in the acrylic polymer. According to the heat conducting double sided tape provided by the invention, by adopting the acrylic polymer as heat-conducting glue and mixed power of the graphite, boron nitride, aluminum nitride and aluminum oxide as a heat conducting agent and controlling the proportion and grain size distribution of the heat conducting glue and the mixed heat conducting agent and the distribution manner of the heat conducting agent in the heat conducting glue, the heat conductivity of the heat conducting double sided tape is improved. The heat conducting double sided tape provided by the invention is good in heat conducting property.

Description

technical field [0001] The invention mainly relates to a heat-conducting double-sided adhesive tape and a preparation process thereof, in particular to a heat-conducting double-sided adhesive tape with excellent thermal conductivity and a preparation process thereof. Background technique [0002] With the rapid development of the electronics industry, electronic products are becoming more and more portable, smaller and smaller, and the integration of electronic components is getting higher and higher, and the heat dissipation requirements for electronic components are getting higher and higher. Thermally conductive double-sided tape is a widely used thermally conductive material. How to improve the thermal conductivity of thermally conductive double-sided tape has always been a research topic in the industry. One of the common methods is to add a thermal conductive agent to the thermally conductive adhesive to improve the thermal conductivity of the thermally conductive dou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00C09J133/00C09J11/04
Inventor 沈阳
Owner 常熟市富邦胶带有限责任公司
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