Ethylene-Propylene-diene monomer (EPDM)-based conductive rubber and preparation method thereof

A technology of conductive rubber and rubber, which is applied in the field of EPDM-based conductive rubber and its preparation, can solve the problem of high price, and achieve the effect of excellent conductivity and good cost performance

Active Publication Date: 2012-07-18
SHENZHEN DARBOND INTERFACE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the conductive rubber on the market is mainly made of silicon-based rubber materials for its high-grade base materials. Although silicon-based rubber materials have good electrical properties, weather resistance, and high and low temperature stability, their current prices are relatively high. Especially silicone rubber with special properties, its price is higher

Method used

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  • Ethylene-Propylene-diene monomer (EPDM)-based conductive rubber and preparation method thereof
  • Ethylene-Propylene-diene monomer (EPDM)-based conductive rubber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1～3

[0031] (1) Prepare raw materials

[0032] a EPDM rubber

[0033] Among them: a1 ENB type EPDM rubber

[0034] a2 DCPD type EPDM rubber

[0035] b titanate coupling agent KR-138

[0036] c vulcanizing agent

[0037] Where: c1 DCBP c2 DCP c3 DBPMH

[0038] d active agent zinc oxide

[0039] e conductive powder

[0040] Among them: e1 pure silver conductive powder (average particle size 35μm)

[0041] e2 silver-coated aluminum conductive powder (average particle size 70μm)

[0042] e3 Nickel coated graphite (average particle size 30μm)

[0043] e4 nickel coated graphite (average particle size 75μm)

[0044] The above-mentioned powders are matched according to the ratio shown in Table 1, and then the surface of the mixed powder is treated by wet method, so that the surface is coated with a layer of conductive powder of titanate coupling agent.

[0045] (2) Mix the above-mentioned components in proportion (see Table 1 for specific components and their proportions) o...

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Abstract

The invention relates to ethylene-Propylene-diene monomer (EPDM)-based conductive rubber and a preparation method of the rubber. The EPDM-based conductive rubber comprises the following raw materials in percentage by weight: 15-20 percent of EPDM rubber, 0.005-1 percent of titanate coupling agent, 0.6-1.2 percent of vulcanizing agent, 4-6 percent of active agent, and 71.8-80.4 percent of conductive powder. The preparation method comprises the steps of drying conductive powder body, performing polarity matching for the conductive powder body particle size, coating and mixing the conductive powder body. The EPDM-based conductive rubber provided by the invention has the advantages of excellent oxidation resistance, ozone and corrosion resistance, good conductive performance, stable resistance time property, controllable resistance temperature coefficient, higher temperature limit and the like.

Description

technical field [0001] The invention relates to an EPDM-based conductive rubber and a preparation method thereof, in particular to a low-cost EPDM-based conductive rubber and a preparation method thereof, which belongs to an organic conductive material requiring an electromagnetic shielding interface. Background technique [0002] In recent years, with the rapid development of science and technology and the electronics industry, various digital and high-frequency electronic and electrical equipment radiate a large number of electromagnetic waves of different wavelengths and frequencies into the space when they are working, resulting in new environmental pollution-electromagnetic wave interference and radiated frequency interference. The electromagnetic interference generated by electromagnetic radiation not only affects the performance of electronic products, but also the electromagnetic pollution caused by it will cause serious harm to human beings and other organisms. In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K9/10C08K3/08C08K5/14C08K3/22
Inventor 杨福河陈田安赵仁荔
Owner SHENZHEN DARBOND INTERFACE MATERIALS
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