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Heat-conducting elastomer as well as preparation method and application thereof

A technology of elastomer and elastic matrix, which is applied in the field of thermally conductive elastomer and its preparation, can solve the problems of difficult balance between thermal conductivity and mechanical properties, inability to obtain elastomers, and affecting the mechanical properties of elastomers, etc.

Pending Publication Date: 2022-03-22
ADVANCED THERMOPLASTIC POLYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] If the amount of thermally conductive filler added is insufficient, an elastomer with good thermal conductivity cannot be obtained, but if the amount of filler is large, the mechanical properties of the elastomer will be affected; that is, it is usually difficult to balance thermal conductivity and mechanical properties

Method used

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  • Heat-conducting elastomer as well as preparation method and application thereof
  • Heat-conducting elastomer as well as preparation method and application thereof
  • Heat-conducting elastomer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] In this embodiment, a heat-conducting elastomer is prepared, and the specific process is as follows:

[0061] A1. 5 mass parts of boron nitride nanotubes, 0.5 mass parts of glacial acetic acid, 0.4 mass parts of ethanol (content > 99.9%), and 0.3 mass parts of sodium hydroxide are dispersed in water to form a boron nitride content of 4g / ml mixed system;

[0062] A2. The system obtained in step A1 is irradiated with gamma rays, the dose rate is 18Gy / min, and the time for receiving the irradiation is 2h;

[0063] A3. The system obtained in step A2 was subjected to solid-liquid separation, and the obtained solid was washed 3 times with ultrapure water, and then dried at 120° C.;

[0064] A4. Disperse the solid obtained in step A3 and 1 mass part of graphene oxide into an aqueous ethanol solution (75% ethanol mass content), and ultrasonic 3h; the mass ratio of graphene oxide and boron nitride nanotubes is about 1:5;

[0065] A5. Add 50 parts by mass of styrene and 50 par...

Embodiment 2

[0070] This embodiment prepares a kind of heat-conducting elastomer, the difference between specific process and embodiment 1 is:

[0071] (1) In step A1, 9 mass parts of boron nitride nanotubes, 0.9 mass parts of glacial acetic acid, 0.72 mass parts of ethanol (content > 99.9%), and 0.54 mass parts of sodium hydroxide are dispersed in water to form nitrogen A mixed system with boron content of 4g / ml;

[0072] (2) In step A4, the mass ratio of graphene oxide and boron nitride nanotube is about 1:9.

Embodiment 3

[0074] This embodiment prepares a kind of heat-conducting elastomer, the difference between specific process and embodiment 1 is:

[0075] (1) Steps A1 to A3 are not included;

[0076] (2) In step A4, directly ultrasonically disperse 1 mass part of graphene oxide and 5 mass parts of boron nitride nanotubes together.

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Abstract

The invention discloses a heat-conducting elastomer as well as a preparation method and application thereof, and belongs to the technical field of heat-conducting composite materials. The heat-conducting elastomer comprises the following components in parts by mass: 100 parts of an elastic matrix and 5-20 parts of heat-conducting filler, the heat-conducting filler is prepared from the following components in parts by weight: 10 to 20 parts of graphene oxide and 80 to 90 parts of one-dimensional nano boron nitride; the one-dimensional nano boron nitride is subjected to hydroxyl and carboxyl modification. Through the cooperation of the heat-conducting fillers with different morphologies, the heat-conducting property of the heat-conducting elastomer can be improved on the premise of reducing the use amount of the heat-conducting fillers, namely the heat-conducting property and the mechanical property of the heat-conducting elastomer can be balanced to a certain extent.

Description

technical field [0001] The invention belongs to the technical field of heat-conducting composite materials, and in particular relates to a heat-conducting elastomer and its preparation method and application. Background technique [0002] Under the action of resistance or electromagnetic waves, electronic components will generate heat, and with the miniaturization and complexity of electronic components, the heat generating parts tend to be concentrated. If the heat generated by electronic components cannot be dissipated in time, it may cause electronic The function of the components is reduced, and even the electronic components are damaged. [0003] Due to its excellent thermal conductivity, thermally conductive elastomers are widely used in the fields of heat dissipation of inductors and electronic components, as well as in the field of packaging of special cables and electronics, and even thermally conductive potting and other adjacent fields. However, the thermal condu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F236/10C08K3/04C08K9/00C08K9/04C08K9/02C08K7/24C08K7/04
CPCC08F212/08C08F236/10C08K3/042C08K9/00C08K9/04C08K9/02C08K7/24C08K7/04
Inventor 刘悦钟荣栋李同兵
Owner ADVANCED THERMOPLASTIC POLYMER TECH