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A kind of high electromagnetic shielding rubber composition and preparation method thereof

A rubber composition and electromagnetic shielding technology, applied in the field of rubber, can solve the problems of low electromagnetic shielding performance and high hardness of electromagnetic shielding rubber, and achieve the effects of good processing performance, improved mechanical properties, and superior molding process

Active Publication Date: 2022-06-10
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] An object of the present invention is to provide a high electromagnetic shielding rubber composition to solve the problems of high hardness and low electromagnetic shielding performance of electromagnetic shielding rubber in the prior art

Method used

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  • A kind of high electromagnetic shielding rubber composition and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0036] The high electromagnetic shielding rubber composition of the present embodiment is a high electromagnetic shielding rubber composition with low hardness and low compression set, and is made from the following raw materials: 100 kg of methyl vinyl silicone rubber, 20 kg of plasticizer paraffin oil, fumed white Carbon black 3kg, vulcanizing aid TAIC (triallyl isocyanurate, also called triallyl isocyanurate) 1kg, vulcanizing agent dicumyl peroxide 1.2kg, calcium sulfate whisker 2kg , conductive filler graphene 0.5kg, conductive filler carbon nanotubes 0.1kg, conductive filler silver plated aluminum powder 100kg.

[0037] The preparation method of the high electromagnetic shielding rubber composition of the present embodiment comprises the following steps:

[0038] 1) adding methyl vinyl silicone rubber into the mixer, then adding silica and plasticizer successively for mixing to obtain a rubber compound;

[0039] 2) adding the sizing agent obtained in step 1) into an open...

Embodiment 2

[0042] The high electromagnetic shielding rubber composition of this embodiment is a high electromagnetic shielding rubber composition with low hardness and low compression set, and is made from the following raw materials: 100 kg of methyl phenyl silicone rubber, 30 kg of plasticizer soybean oil, and precipitation white Carbon black 10kg, vulcanization aid DTDM (4,4'-dimorpholine disulfide) 1kg, vulcanization agent 2,4-dichlorobenzoyl peroxide 0.9kg, potassium titanate whisker 5kg, conductive filler graphene 0.6 kg, conductive filler carbon nanotubes 0.2kg, conductive filler silver powder 130kg.

[0043] The preparation method of the high electromagnetic shielding rubber composition of the present embodiment comprises the following steps:

[0044] 1) adding methyl phenyl silicone rubber into a mixer, then adding silica and a plasticizer successively for mixing to obtain a rubber compound;

[0045] 2) adding the rubber material obtained in step 1) into an open mill, then adding...

Embodiment 3

[0048] The high electromagnetic shielding rubber composition of this embodiment is a high electromagnetic shielding rubber composition with low hardness and low compression set, and is made from the following raw materials: methyl vinyl phenyl silicone rubber 100 kg, plasticizer 1,2 propylene glycol 20kg, plasticizer silicone oil 20kg, precipitated silica 30kg, vulcanization aid TMTD (tetramethylthiuram disulfide) 4kg, vulcanizing agent 2,5-dimethyl-2,5-di(tert-butyl perylene) Oxygen) hexane 1kg, zinc oxide whisker 10kg, conductive filler graphene 1kg, conductive filler carbon nanotube 0.01kg, conductive filler nickel-plated graphite powder 195kg.

[0049] The preparation method of the high electromagnetic shielding rubber composition of the present embodiment comprises the following steps:

[0050] 1) adding methyl vinyl phenyl silicone rubber into a mixer, then adding silica and a plasticizer successively and mixing to obtain a sizing material;

[0051] 2) adding the sizing...

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Abstract

The invention relates to a high electromagnetic shielding rubber composition and a preparation method thereof, belonging to the technical field of rubber. The high electromagnetic shielding rubber composition of the present invention is mainly made of the following raw materials in parts by weight: 100 parts of silicone rubber, 1-40 parts of plasticizer, 1-30 parts of white carbon black, 0.1-5 parts of vulcanization aid, Vulcanizing agent 0.6-1.4 parts, inorganic whiskers 1-10 parts, conductive filler 0.01-200 parts; vulcanization aids are triallyl isocyanurate, platinum catalyst, 4,4'-dimorpholine disulfide , one or more of tetramethylthiuram disulfide, N, N'-m-phenylene bismaleimide; the vulcanizing agent is hydrogen-containing silicone oil, 2,4-dichlorobenzoyl peroxide , 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane and one or more of dicumyl peroxide. The high electromagnetic shielding rubber composition of the invention has relatively low hardness and good mechanical properties.

Description

technical field [0001] The invention relates to a high electromagnetic shielding rubber composition and a preparation method thereof, belonging to the technical field of rubber. Background technique [0002] With the development of science and technology, a variety of electronic devices have increasingly entered people's lives. With the increase in the application of electronic devices, the problems of electromagnetic interference, electromagnetic information leakage, and environmental electromagnetic pollution have become more and more prominent. The electromagnetic shielding method can effectively control electromagnetic radiation and reduce electromagnetic pollution. The traditional electromagnetic shielding materials are metal plates, wire meshes, etc., but with the development of polymer materials, electromagnetic shielding rubber has become a new type of electromagnetic shielding material. The electromagnetic shielding rubber has good thermal conductivity while ensuri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/04C08L91/06C08L91/00C08L83/08C08K13/06C08K7/26C08K5/3492C08K13/04C08K5/378C08K5/40C08K5/053C08K3/08C08K5/3415
CPCC08L83/04C08L2205/025C08L91/06C08K13/06C08K7/26C08K5/34924C08L91/00C08K13/04C08K5/378C08K5/40C08K5/053C08K3/08C08L83/08C08K5/3415
Inventor 窦鹏张博杨瑞宁
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST