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 high hardness of electromagnetic shielding rubber and low electromagnetic shielding performance, and achieve the effects of good processing performance, improved mechanical properties, and superior molding process

Active Publication Date: 2020-02-18
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An object of the present invention is to provide a high electromagnetic shielding rubber composition to solve th...

Method used

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  • High electromagnetic shielding rubber composition and preparation method thereof

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Effect test

Embodiment 1

[0036] 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 of the following raw materials: methyl vinyl silicone rubber 100kg, plasticizer paraffin oil 20kg, gas phase white Carbon black 3kg, vulcanization aid TAIC (triallyl isocyanurate, also known as triallyl isocyanurate) 1kg, vulcanizing agent dicumyl peroxide 1.2kg, calcium sulfate whisker 2kg , Conductive filler graphene 0.5kg, conductive filler carbon nanotube 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 steps:

[0038] 1) adding methyl vinyl silicone rubber into a mixer, then sequentially adding white carbon black and a plasticizer for mixing to obtain a rubber compound;

[0039] 2) Put the rubber material obtained in step 1) into an open mill, t...

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 of the following raw materials: 100 kg of methyl phenyl silicone rubber, 30 kg of plasticizer soybean oil, precipitated white Carbon black 10kg, vulcanization aid DTDM (4,4'-dimorpholine disulfide) 1kg, vulcanization agent 2,4-dichlorobenzoyl peroxide 0.9kg, potassium titanate whiskers 5kg, conductive filler graphene 0.6 kg, conductive filler carbon nanotube 0.2kg, conductive filler silver powder 130kg.

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

[0044] 1) adding methyl phenyl silicone rubber into a mixer, then adding white carbon black and a plasticizer in turn for mixing to obtain a rubber compound;

[0045] 2) Put the rubber material obtained in step 1) into an open mill, then add vulcanization a...

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 of the following raw materials: 100 kg of methyl vinyl phenyl silicone rubber, plasticizer 1,2 propylene glycol 20kg, plasticizer silicone oil 20kg, precipitated silica 30kg, vulcanization aid TMTD (tetramethylthiuram disulfide) 4kg, vulcanization agent 2,5-dimethyl-2,5-di(tert-butyl peroxide) 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 steps:

[0050] 1) adding methyl vinyl phenyl silicone rubber into a mixer, then adding white carbon black and a plasticizer in turn for mixing to obtain a rubber compound;

[0051] 2) Put the rubber ma...

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Abstract

The invention relates to a high electromagnetic shielding rubber composition and a preparation method thereof, and belongs to the technical field of rubbers. The high electromagnetic shielding rubbercomposition is mainly prepared from, by weight, 100 parts of silicone rubber, 1-40 parts of a plasticizer, 1-30 parts of white carbon black, 0.1-5 parts of a vulcanizing aid, 0.6-1.4 parts of a vulcanizing agent, 1-10 parts of inorganic whiskers and 0.01-200 parts of a conductive filler; the vulcanizing aid is one or more of triallyl isocyanurate, a platinum catalyst, 4,4'-dimorpholine disulfide,tetramethylthiuram disulfide and N,N'-m-phenylene bismaleimide; and the vulcanizing agent is one or more of hydrogen-containing silicone oil, 2,4-dichlorobenzoyl peroxide, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane and dicumyl peroxide. The high electromagnetic shielding rubber composition has 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, various electronic devices have increasingly entered people's lives. With the increase in the application of electronic devices, problems such as electromagnetic interference, electromagnetic information leakage, and environmental electromagnetic pollution have become more and more prominent. The method of electromagnetic shielding can effectively control electromagnetic radiation and reduce electromagnetic pollution. Traditional electromagnetic shielding materials are metal plates, wire mesh, etc., but with the development of polymer materials, electromagnetic shielding rubber has become a new type of electromagnetic shielding material. Electromagnetic shielding rubber not only ensures the effect of electromagnetic shield...

Claims

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Application Information

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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
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