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High-heat-conductive boron nitride insulation material and preparation method thereof

An insulating material, boron nitride technology, applied in the field of boron nitride high thermal conductivity insulating material and its preparation, can solve the problems of distribution and arrangement that cannot be achieved by the production process, and achieve high strength, high thermal conductivity, and high insulation Effect

Active Publication Date: 2014-10-01
LONGPONT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such an ideal distribution and arrangement cannot be achieved in the production process, which requires not only the consideration of the overall design of the composite material, but also the design of the molding process
There are a lot of researches at home and abroad, but there is still no molding technology

Method used

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  • High-heat-conductive boron nitride insulation material and preparation method thereof
  • High-heat-conductive boron nitride insulation material and preparation method thereof
  • High-heat-conductive boron nitride insulation material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0041] 1) Pretreatment of boron nitride:

[0042] Make 25 parts by weight of pure boron nitride into a whisker shape with a large specific surface area, and then blend boron nitride with a biphenyl solution of 2% PPS at a mass ratio of 1:1 for 5 minutes , filtered, and dried at a high temperature to obtain granular boron nitride with a thermal conductivity of 10W / m·K and a particle size of 5-80 μm;

[0043] 2) After beating 5 parts by weight of aramid fiber 1313 in a water crushing equipment, and then performing a broom treatment with a metal disc mill, to obtain aramid fiber with a beating degree of 50oSR;

[0044] 3) 10 parts by weight of 1313 fibrids are subjected to beating treatment in water crushing equipment, and then broomized with a high-speed rotating metal disc mill for 5 minutes to obtain fibrous fibrids that are divided into brooms, and the degree of beating is 60oSR;

[0045] Table 1. Zeta potential comparison table after aramid fiber treatment

[0046]

[...

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Abstract

The invention discloses a high-heat-conductive boron nitride insulation material as well as a preparation method and an application thereof. The insulation material provided by the invention comprises aramid fibers, fibrids, mica, and granular boron nitride which is treated by polyphenylene sulfide. The insulation material has the characteristics of high heat conductivity, high insulativity, high strength, strong machinability, high physical property, high chemical resistance and the like, and is excellent in compact resistance, chemical corrosion resistance and heat fatigue resistance. Thus, the insulation material provided by the invention can be applied to high-end composite insulation materials.

Description

technical field [0001] The invention relates to a boron nitride high thermal conductivity insulating material and a preparation method and application thereof. Background technique [0002] With the development of integration technology and assembly technology, the volume of electronic components and logic circuits is getting smaller and smaller, and high thermal conductivity insulating materials with good heat dissipation are required; with the rapid development of high-power electrical and electronic products, more and more More heat problems. The heating, heat transfer, and cooling of large and medium-sized high-voltage generators and motors directly affect important indicators such as work efficiency, service life, and reliability. With the increasing popularity of polymer materials in various industries, people's requirements for their comprehensive performance continue to increase. The field of electronic and electrical materials urgently needs heat-conducting insula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/10C08K13/06C08K9/04C08K3/38C08K3/34
CPCC08K2201/003C08L77/10C08L2203/20C08L2205/025C08L2205/16C08K9/04C08K2003/385C08K3/34C08G69/32C09K5/14C08K3/38C08K2201/001C08K2201/005
Inventor 肖东华林德苗陶世毅
Owner LONGPONT
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