Preparation method of electroconductive silicone rubber

A conductive silicon and rubber technology, applied in the field of silicone rubber, can solve the problems of poor thermal conductivity and the limitation of conductive silicone rubber, and achieve the effects of large conductive current, heat resistance and compressibility, and good adhesion

Active Publication Date: 2014-03-26
广东长博电子绝缘材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conductivity of general silicone rubber can meet the requirements, but conduction will generate heat, and the thermal conductivity of general silicone r

Method used

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Examples

Experimental program
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Effect test

Example

[0032] Example 1

[0033] The method for preparing conductive silicone rubber of the present invention includes the following steps:

[0034] (1) Mix acetylene carbon black, aluminum oxide, hydroxy silicone oil, and 1% of the weight of acetylene carbon black, and then add them to a granulator to make acetylene carbon black and aluminum oxide particles with a diameter of 0.5-0.8 mm;

[0035] (2) Mix the raw silicone rubber;

[0036] (3) Add white carbon black, quartz powder, zinc stearate, liquid silicone rubber, mixed particles of acetylene carbon black and aluminum oxide, structure inhibitor, and vinyl-containing silane coupling agent to mix thoroughly;

[0037] (4) Add vulcanizing agent and mix for 5-10 minutes to obtain conductive silicone rubber.

[0038] In step (1), the particle size of aluminum oxide is 2000-8000 mesh.

[0039] The structure inhibitor is hexamethylcyclotrisilazane and diphenylsiliconediol.

[0040] The vinyl-containing silane coupling agent is a methyl vinyl organop...

Example Embodiment

[0057] Example 2

[0058] The method for preparing conductive silicone rubber of the present invention includes the following steps:

[0059] (1) Mix acetylene carbon black, aluminum oxide, hydroxy silicone oil, and 1% of the weight of acetylene carbon black, and then add them to a granulator to make acetylene carbon black and aluminum oxide particles with a diameter of 0.5-0.8 mm;

[0060] (2) Mix the raw silicone rubber;

[0061] (3) Add white carbon black, quartz powder, zinc stearate, liquid silicone rubber, mixed particles of acetylene carbon black and aluminum oxide, structure inhibitor, and vinyl-containing silane coupling agent to mix thoroughly;

[0062] (4) Add vulcanizing agent and mix for 5-10 minutes to obtain conductive silicone rubber.

[0063] In step (1), the particle size of aluminum oxide is 2000-8000 mesh.

[0064] The structural inhibitor is methylphenyl diethoxysilane.

[0065] The vinyl-containing silane coupling agent is a methyl vinyl organopolysiloxane with a viny...

Example Embodiment

[0082] Example 3

[0083] The method for preparing conductive silicone rubber of the present invention includes the following steps:

[0084] (1) Mix acetylene carbon black, aluminum oxide, hydroxy silicone oil, and 1% of the weight of acetylene carbon black, and then add them to a granulator to make acetylene carbon black and aluminum oxide particles with a diameter of 0.5-0.8 mm;

[0085] (2) Mix the raw silicone rubber;

[0086] (3) Add white carbon black, quartz powder, zinc stearate, liquid silicone rubber, mixed particles of acetylene carbon black and aluminum oxide, structure inhibitor, and vinyl-containing silane coupling agent to mix thoroughly;

[0087] (4) Add vulcanizing agent and mix for 5-10 minutes to obtain conductive silicone rubber.

[0088] In step (1), the particle size of aluminum oxide is 2000-8000 mesh.

[0089] The structural inhibitor is hexamethylcyclotrisilazane.

[0090] The vinyl-containing silane coupling agent is a methyl vinyl organopolysiloxane with a vinyl...

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Abstract

The invention discloses a preparation method of electroconductive silicone rubber. Acetylene black, aluminum oxide, hydroxyl silicone oil and water accounting for 1% of the acetylene black by weight are mixed and added into a granulator to be produced into acetylene black and aluminum oxide particles for mixing. The silicone rubber has the advantages of high heat conductivity, heat resistance and low compressibility, the tensile strength is larger than 9.6 MPa, the tear strength is above 36 N/mm, and the volume resistivity is smaller than 45 omega.cm.

Description

technical field [0001] The invention relates to the technical field of silicone rubber, in particular to a preparation method of conductive silicone rubber. Background technique [0002] Silicone rubber has excellent heat resistance, low temperature resistance, insulation, shock resistance, compression resistance, wear resistance and good biological characteristics, making it widely used in construction, transportation, electronic appliances, chemicals, biological materials and aerospace materials. [0003] The currently used conductive silicone rubber generally adds reinforcing agents, conductive additives, coupling agents, and vulcanizing agents to methyl vinyl silicone rubber to meet electrical and mechanical performance requirements. However, the conductivity of general silicone rubber can meet the requirements, but conduction will generate heat, and the thermal conductivity of general silicone rubber is relatively poor, so that the use of conductive silicone rubber is ...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08K13/06C08K9/06C08K3/04C08K3/22C08K3/36C08K5/098
Inventor 尤晓明李洋张国栋王显涛延云峰魏文祥
Owner 广东长博电子绝缘材料有限公司
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