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Electrically conductive rubber composition, electrically conductive rubber and preparation method of electrically conductive rubber

A technology of conductive rubber and composition, applied in the field of conductive rubber and its preparation, conductive rubber composition, can solve problems such as inability to shield high-frequency electromagnetic waves, and achieve the effects of high mechanical elasticity and high conductivity

Inactive Publication Date: 2020-10-30
深圳市腾顺电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a conductive rubber composition, conductive rubber and a preparation method thereof, aiming at overcoming the problem that the existing conductive rubber cannot effectively shield high-frequency electromagnetic waves

Method used

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  • Electrically conductive rubber composition, electrically conductive rubber and preparation method of electrically conductive rubber
  • Electrically conductive rubber composition, electrically conductive rubber and preparation method of electrically conductive rubber
  • Electrically conductive rubber composition, electrically conductive rubber and preparation method of electrically conductive rubber

Examples

Experimental program
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Effect test

Embodiment 1

[0032] 1. Conductive rubber composition

[0033] The conductive rubber composition of this embodiment is composed of the following components by weight: 100 parts of methyl vinyl silicone rubber, 20 parts of carbon nanotubes, 5 parts of graphene, 5 parts of γ-mercaptopropyltrimethoxysilane, 4 parts of 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane.

[0034] 2. Conductive rubber

[0035] The conductive rubber of this embodiment is made from the above-mentioned conductive rubber composition.

[0036] Specifically, the preparation method of the conductive rubber of the present embodiment includes the following steps:

[0037] 1) Mixing

[0038] After accurately weighing each component according to the above weight parts, place it in a three-roll mixer for mixing; when mixing, control the mixing temperature to 30°C and the mixing time to 60 minutes to fully and evenly disperse the components. Leave the sheet for 8 hours to obtain the mixed rubber.

[0039] 2) Compression moldin...

Embodiment 2

[0047] 1. Conductive rubber composition

[0048]The conductive rubber composition of the present embodiment is composed of the following components by weight: 100 parts of methyl vinyl silicone rubber, 25 parts of carbon nanotubes, 5 parts of graphene, 7 parts of n-octyltriethoxysilane, Pt Catalyst 3 parts.

[0049] 2. Conductive rubber

[0050] The conductive rubber of this embodiment is made from the above-mentioned conductive rubber composition.

[0051] Specifically, the preparation method of the conductive rubber of the present embodiment includes the following steps:

[0052] 1) Mixing

[0053] After accurately weighing each component according to the above weight parts, place it in a three-roll mixer for mixing; when mixing, control the mixing temperature to 30°C and the mixing time to 60 minutes to fully and evenly disperse the components. Leave the sheet for 8 hours to obtain the mixed rubber.

[0054] 2) Extrusion molding

[0055] Extrude the above compounded r...

Embodiment 3

[0059] 1. Conductive rubber composition

[0060] The conductive rubber composition of this embodiment is composed of the following components by weight: 100 parts of α, ω-dihydroxydimethylsiloxane, 10 parts of carbon nanotubes, 2 parts of graphene, γ-aminopropyl three 10 parts of ethoxysilane, 3 parts of hexafunctional ethylene siloxane.

[0061] 2. Conductive rubber

[0062] The conductive rubber of this embodiment is made from the above-mentioned conductive rubber composition.

[0063] Specifically, the preparation method of the conductive rubber of the present embodiment includes the following steps:

[0064] 1) Dispersion and stirring

[0065] After accurately weighing each component according to the above parts by weight, except for the hexafunctional ethylidene siloxane, the remaining components are put into a planetary mixer, and dispersed and stirred to obtain a dispersion gel. Wherein, the stirring temperature is 100° C., and the stirring time is 120 min.

[0066...

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Abstract

The invention discloses an electricallyconductive rubber composition, electrically conductive rubber and a preparation method of the electrically conductive rubber. The electrically conductive rubbercomposition comprises the following components in parts by weight: 100 parts of a rubber matrix, 5-30 parts of carbon nanotubes, 1-20 parts of graphene, 0-100 parts of nano M-type barium ferrite, 2-10parts of a silane coupling agent and 1-10 parts of a vulcanizing agent. The electrically conductive rubber prepared from the electrically conductive rubber composition can shield high-frequency electromagnetic waves within the frequency range of 1 GHz-110 GHz, the shielding effect is improved along with the increase of the frequency of electromagnetic waves, and meanwhile, the electrically conductive rubber also has high electrical conductivity and high mechanical elasticity.

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to a conductive rubber composition, a conductive rubber and a preparation method thereof. Background technique [0002] Electromagnetic interference (EMI) shielding of electronic equipment and / or radiation sources is an important consideration in reliable equipment operation. Conductive rubber occupies a pivotal position in the field of electromagnetic shielding due to its good sealing performance, low density, corrosion resistance, and easy processing and molding. Traditional conductive rubber is made by adding conductive fillers such as carbon-based materials, metal materials or metal-plated materials to the rubber matrix. [0003] However, traditional conductive rubber generally only has a certain shielding effect on low-frequency electromagnetic waves below 1 GHz, and as the frequency of electromagnetic waves increases, the shielding effect of traditional conductiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08K13/02C08K3/04C08K5/14C08K5/548C08K5/5419C08K5/544C08K3/22
CPCC08K3/22C08K5/14C08K5/5419C08K5/544C08K5/548C08K13/02C08K2201/001C08K2201/011C08K3/041C08K3/042C08L83/04
Inventor 吴刚林军
Owner 深圳市腾顺电子材料有限公司
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