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Electromagnetic shielding rubber as well as preparation method thereof and electronic device

An electromagnetic shielding and rubber technology, which is applied in the field of electromagnetic shielding rubber and its preparation, can solve the problems of poor interface bonding and the mechanical properties of the rubber substrate, and achieve the effect of improving the processing technology performance.

Inactive Publication Date: 2018-06-19
ENN GRAPHENE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional electromagnetic shielding rubber needs to add a lot of metal oxide or metal powder to the rubber matrix to build a conductive or magnetic network. Because the interface between metal oxide and metal powder and rubber is not well bonded, a large amount of filling will cause Causes a decrease in the mechanical properties of the rubber matrix
[0004] Therefore, the existing technology of electromagnetic shielding rubber needs to be further studied

Method used

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  • Electromagnetic shielding rubber as well as preparation method thereof and electronic device
  • Electromagnetic shielding rubber as well as preparation method thereof and electronic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Electromagnetic shielding rubber formula composition: 100 parts by weight of styrene-butadiene rubber, 2 parts by weight of stearic acid, 10 parts by weight of carbon nanotubes, 10 parts by weight of graphene, 20 parts by weight of acetylene black, 50 parts by weight of silver powder, 30 parts by weight of copper powder, 20 parts by weight of silver-plated glass beads, 30 parts by weight of silver-plated nickel powder, 20 parts by weight of nickel powder, 20 parts by weight of iron oxide and 25 parts by weight of nickel oxide;

[0048] The method for preparing electromagnetic shielding material:

[0049] (1) mixing styrene-butadiene rubber and stearic acid at 60 degrees Celsius for 5 minutes to obtain the mixing material;

[0050] (2) above-mentioned mixing material and carbon nanotube, graphene, acetylene black, silver powder, copper powder, silver-plated glass microsphere, silver-plated nickel powder, nickel powder, iron oxide, nickel oxide and sulfur powder (3.5 part...

Embodiment 2

[0053] Electromagnetic shielding rubber formula composition: 100 parts by weight of silicone rubber, 2 parts by weight of oxidizing agent, 1 part by weight of stearic acid, 8 parts by weight of carbon nanotubes, 7 parts by weight of graphene, 10 parts by weight of acetylene black, 20 parts by weight The silver powder of parts by weight, the copper powder of 40 parts by weight, the silver-plated glass microsphere of 30 parts by weight, the silver-plated nickel powder of 20 parts by weight, the nickel powder of 30 parts by weight, the iron oxide of 40 parts by weight and the nickel oxide of 20 parts by weight ;

[0054] The method for preparing electromagnetic shielding material:

[0055] (1) mixing silicone rubber with stearic acid and an oxidizing agent at 60 degrees Celsius for 20 minutes to obtain a mixing material;

[0056] (2) above-mentioned mixing material and carbon nanotube, graphene, acetylene black, silver powder, copper powder, silver-plated glass microsphere, silv...

Embodiment 3

[0059] Electromagnetic shielding rubber formula composition: 100 parts by weight of nitrile rubber, 1 part by weight of stearic acid, 2 parts by weight of antioxidant, 3 parts by weight of carbon nanotubes, 3 parts by weight of graphene, 10 parts by weight of acetylene black , 70 parts by weight of silver powder, 20 parts by weight of copper powder, 40 parts by weight of silver-plated glass beads, 60 parts by weight of silver-plated nickel powder, 80 parts by weight of nickel powder, 100 parts by weight of iron oxide and 40 parts by weight of Nickel oxide;

[0060] The method for preparing electromagnetic shielding material:

[0061] (1) mixing nitrile rubber with stearic acid and anti-aging agent for 10 minutes at 70 degrees Celsius to obtain the mixing material;

[0062] (2) above-mentioned kneading material and carbon nanotube, graphene, acetylene black, silver powder, copper powder, silver-plated glass microsphere, silver-plated nickel powder, nickel powder, iron oxide, n...

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Abstract

The invention discloses electromagnetic shielding rubber as well as a preparation method thereof and an electronic device. The electromagnetic shielding rubber is prepared from a rubber matrix, an additive, a carbon nanotube, graphene, acetylene black, silver powder, copper powder, silvered glass microbeads, silvered nickel powder, nickel powder, iron oxide and nickel oxide. According to the electromagnetic shielding rubber, the rubber matrix is mixed with the filler such as the carbon nanotube, the graphene, the additive, the acetylene black, the silver powder, the copper powder, the silveredglass microbeads, silvered nickel powder, the nickel powder, the iron oxide and the nickel oxide, a three-dimensional electromagnetic shielding protective system is built by compounding one-dimensional filler, two-dimensional filler and three-dimensional filler, so that the shielding efficacy of the electromagnetic shielding rubber can be improved, the addition amount of the filler can be reduced, and the mechanical performance of the electromagnetic shielding rubber can be improved.

Description

technical field [0001] The invention belongs to the field of silicone rubber, in particular, the invention relates to electromagnetic shielding rubber, a preparation method thereof and electronic equipment. Background technique [0002] With the development of science and technology, all kinds of electrical, electronic and communication equipment are showing explosive growth. People are facing more threats of electromagnetic radiation while enjoying convenience. Normal work, so more effective electromagnetic shielding materials are needed to ensure human health and normal operation of equipment. The mechanism of electromagnetic shielding can be explained by the transmission line theory. The transmission line theory regards the shield as a transmission line. When the radiation field passes through the shield, part of it is reflected on the outer surface, and the rest penetrates into the shield and transmits forward. During the transmission process, the electromagnetic wave I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08L83/04C08L9/02C08L11/00C08L7/00C08K13/06C08K9/10C08K7/20C08K7/24C08K3/04C08K3/08C08K3/22
Inventor 贺世家杜航赵鸿宇
Owner ENN GRAPHENE TECH CO LTD