Environment-resistant electromagnetic protection composite conductive rubber and preparation method thereof

An electromagnetic protection and composite conductive technology, applied in the field of functional composite rubber, can solve problems such as being easily corroded, affecting the electromagnetic sealing and environmental sealing performance of conductive rubber sealing strips, and electrochemical corrosion of conductive rubber, and achieving enhanced mildew resistance and flexibility. properties, enhanced salt spray corrosion resistance, and enhanced thermal stability

Pending Publication Date: 2020-05-01
NO 33 RES INST OF CHINA ELECTRONICS TECHNOOGY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Highly conductive rubber composite materials have excellent electromagnetic shielding performance and environmental sealing performance, but in coastal and humid environments, the salt solution formed by moist water vapor will adhere to the surface of electromagnetic shielding rubber and electronic equipment, resulting in local electrochemical corrosion of conductive rubber, Thus affecting the electromagnetic sealing and environmental sealing performance of the conductive rubber sealing strip
In addition, ordinary conductive rubber strips are also easily corroded when used in an oil-sealed environment

Method used

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  • Environment-resistant electromagnetic protection composite conductive rubber and preparation method thereof
  • Environment-resistant electromagnetic protection composite conductive rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] S1. Weigh the raw materials of the conductive part and the non-conductive part respectively according to the formula; the material formula of the conductive part is 100 parts of silicone rubber, 248 parts of glass silver-plated powder, 1.0 parts of carbon nanotube reinforcing agent, 1.2 parts of silane coupling agent, 0.62 parts of hydroxyl silicone oil, 1.31 parts of hydrogen-containing silicone oil as a vulcanizing agent, and 0.62 parts of chloroplatinic acid as a vulcanization accelerator; the material formula of the non-conductive part is 100 parts of silicone rubber, 18 parts of glass microspheres, 0.41 parts of hydroxyl silicone oil, and hydrogen-containing silicone oil as a vulcanizing agent 0.58 parts, 0.52 parts of vulcanization accelerator chloroplatinic acid;

[0030] S2. Add the conductive rubber base material, hydroxy silicone oil and silane coupling agent into the internal mixer for 10-15 minutes of mixing;

[0031] S3. Add glass silver-plated powder and r...

Embodiment 2

[0040] S1. Weigh the raw materials of the conductive part and the non-conductive part respectively according to the formula; the material formula of the conductive part is 100 parts of fluorosilicone rubber, 268 parts of aluminum silver-plated powder, 0.85 parts of graphene oxide, 0.56 parts of hydroxyl silicone oil, and hydrogen-containing vulcanizing agent 1.28 parts of silicone oil, 0.665 parts of vulcanization accelerator; the material formula of the non-conductive part is 100 parts of fluorosilicone rubber, 16 parts of glass microspheres, 3.8 parts of silane coupling agent, 0.42 parts of hydroxyl silicone oil, and 0.58 parts of hydrogen-containing silicone oil as a vulcanizing agent , 0.48 parts of vulcanization accelerator;

[0041] S2. Add the conductive rubber base material, hydroxy silicone oil and silane coupling agent into the internal mixer for 10-15 minutes of mixing;

[0042] S3. Add aluminum silver-plated powder and reinforcing agent to the internal mixer, conti...

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Abstract

The invention relates to the technical field of functional composite rubbers in electronic materials, particularly to an environment-resistant electromagnetic protection composite conductive rubber and a preparation method thereof. The composite conductive rubber is formed by integrally vulcanizing a conductive part and a non-conductive part. According to the invention, the basic performance of the prepared composite rubber completely meets related standards of a conductive rubber gasket; a fluorosilicone conductive rubber is used as base rubber, so that the prepared composite rubber is stablein performance in an oil seal environment so as to resist oil corrosion; through a carbon nano-tube reinforcing agent, the mildew-proof characteristic and the flexibility of a composite strip are enhanced; through graphene oxide, the salt spray corrosion resistance of an aluminum-silver composite conductive rubber is enhanced; through glass micro-beads, the thermal stability of the composite strip in a high-temperature forming process is enhanced; the main function of the non-conductive part of the prepared composite conductive rubber strip is environment sealing, and the main function of theconductive part is electromagnetic sealing; and the environment-resistant special requirements of equipment operating in an extreme environment on the electromagnetic protection sealing strip are met.

Description

technical field [0001] The invention relates to the technical field of functional composite rubber in electronic materials, and more specifically relates to an environment-resistant electromagnetic protection composite conductive rubber and a preparation method thereof. Background technique [0002] Electromagnetic shielding is a measure to prevent high-frequency electromagnetic fields from propagating in space with a shielding body. It is an effective means to suppress radiation interference; electromagnetic leakage at the gaps in the assembly surface of shielding bodies such as chassis and cabinets seriously affects the electromagnetic compatibility of equipment. Conductive lining The pad can fill the gap, improve the electrical continuity of the contact surface, and can effectively suppress the leakage at the gap. It is currently the most widely used shielding material. [0003] Highly conductive rubber composite materials have excellent electromagnetic shielding performa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/08C08L83/04C08L83/05C08K13/06C08K9/10C08K7/20C08K3/08C08K3/04C08K3/40
CPCC08K2003/0806C08K2003/0812C08K2201/001C08K2201/011C08L83/08C08L2201/04C08L2201/08C08L2205/025C08L2205/035C08L83/04C08K13/06C08K9/10C08K7/20C08K3/08C08K3/041C08K3/40C08K3/042
Inventor 任圣平王月祥王胜利李彦奎张小刚赵维富刘帆李东
Owner NO 33 RES INST OF CHINA ELECTRONICS TECHNOOGY GRP
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