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A kind of conductive silicone rubber and preparation method thereof

A conductive silicon and rubber technology, applied in the rubber field, can solve the problems of reduced electrical conductivity, large specific surface area, and low bulk density of conductive rubber, and achieve the effects of improving oxidation resistance, good electrical conductivity, and improved electrical conductivity.

Active Publication Date: 2021-06-22
厦门市科源电子工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main component carbon black of the conductive filler in the above-mentioned prior art is powdery, and particle diameter is generally about (30~50) nm, and specific surface area is big, and packing density is little, therefore, be difficult to disperse in production process, cause the produced The conductive properties of conductive rubber are reduced

Method used

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  • A kind of conductive silicone rubber and preparation method thereof
  • A kind of conductive silicone rubber and preparation method thereof
  • A kind of conductive silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: A kind of conductive silicone rubber, prepared by the following steps:

[0052] Step 1, the preparation of promoter:

[0053] (1) Two hemispherical shells 3 with an inner diameter of 2 cm are made through a hemispherical mold, and the two hemispherical shells 3 form a circular sphere 2 with a cavity;

[0054] (2) A circular plate 4 with a diameter equal to the inner diameter of the circular sphere 2 is made through a circular mold, so that the circular plate 4 can be embedded in the hemispherical shell 3, and the two hemispherical shells 3 and the circular plate 4 form a hollow Spherical shell 1, the material of making hollow spherical shell 1 is paraffin;

[0055] (3) Add the exothermic composition A into a hemispherical shell 3, cover the disc 4 and fix the disc 4 in the hemispherical shell 3 by heating;

[0056] (4) The exothermic composition B is added into another hemispherical shell 3, and the two hemispherical shells 3 are fixed by heating to prep...

Embodiment 2

[0064] Embodiment 2: a kind of conductive silicone rubber, the difference with embodiment 1 is that the weight ratio of methyl vinyl silicone rubber, carbon black, vulcanizing agent, silicone oil, polytetrafluoroethylene and procatalyst is 60:36: 2:3:2:25.

Embodiment 3

[0065] Embodiment 3: a kind of conductive silicone rubber, the difference with embodiment 1 is that the weight ratio of methyl vinyl silicone rubber, carbon black, vulcanizing agent, silicone oil, polytetrafluoroethylene and procatalyst is 60:36: 2:3:2:30.

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Abstract

The invention discloses a conductive silicone rubber and a preparation method thereof, belonging to the technical field of rubber. The technical point is: the conductive silicone rubber includes the following components by weight: 58-63 parts of methyl vinyl silicone rubber; 36-37 parts of carbon black; 20-30 parts of co-catalyst; 1-2 parts of vulcanizing agent; 1-10 parts of agent; the cocatalyst includes a hollow spherical shell, and the hollow spherical shell includes a circular sphere and a circular plate arranged in the circular sphere and dividing the circular sphere into two chambers, and the two said The chamber is correspondingly filled with exothermic composition A and exothermic composition B, and the exothermic composition A and exothermic composition B meet to produce an exothermic reaction; the material for making the hollow spherical shell is paraffin; the exothermic composition A is An oxidizable metal, the oxidizable metal is one or two or more metal powders of iron, magnesium and calcium; the exothermic composition B includes a water-retaining agent and water. The present invention has the advantage of improving the conductivity of the conductive silicone rubber.

Description

technical field [0001] The invention belongs to the technical field of rubber, and more specifically relates to a conductive silicone rubber and a preparation method thereof. Background technique [0002] Silicone rubber (SiliconeRubber) is a kind of polymer elastic material with both inorganic and organic properties. Its molecular main chain is composed of silicon atoms and oxygen atoms alternately (-Si-O-Si-), and the side chain is connected to silicon atoms. Hydrocarbon or substituted hydrocarbon organic groups, which can be methyl, unsaturated vinyl or other organic groups, this low unsaturation molecular structure makes silicone rubber have excellent heat aging resistance and Weather resistance, UV and ozone resistance. Due to the high flexibility of silicone rubber molecular chains and weak interaction between molecular chains, these structural features make the vulcanizate soft and elastic. These characteristics make silicone rubber widely used in wires, cables and c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L91/06C08L83/04C08L27/18C08K3/04C08K3/16C08K3/08C08K7/24C08K5/14C08K9/10C08K13/06
CPCC08K2003/0856C08K2201/001C08L83/04C08L2201/08C08L2205/025C08L2205/035C08L91/06C08L27/18C08K3/04C08K3/16C08K3/08C08K7/24C08K5/14C08K9/10C08K13/06
Inventor 郭宇新
Owner 厦门市科源电子工业有限公司