Semiconductive silicon rubber shielding material for radiation-resistant cable, and preparation method thereof

Abstract

The invention relates to a semiconductive silicon rubber shielding material for a radiation-resistant cable, and a preparation method of the material, belonging to the technical field of cable shielding material. The semiconductive silicon rubber shielding material comprises the raw material components in parts by weight: 100 parts of silicon rubber, 20-40 parts of conductive carbon black, 40-50 parts of white carbon black, 1.0-2.5 parts of dicumyl peroxide, 2.0-3.0 parts of auxiliary vulcanizing agent, 5-15 parts of diphenyl silanediol, 1.0-2.0 parts of stearic acid, 4-6 parts of zinc oxide and 2-5 parts of ferric oxide, wherein the silicon rubber is phenyl ether supporting silicone rubber or phenylene silicone rubber; and the auxiliary vulcanizing agent is triene propyl cyanurate. The silicon rubber shielding material is good in radiation-resistant performance, and can give play to the specified function for a long time on radiation occasion when being used as a shielding layer of an electric wire and the cable.

Description

technical field [0001] The invention relates to a cable shielding material. More specifically, the invention relates to a semiconductive silicon rubber shielding material for radiation-resistant cables and a preparation method thereof, belonging to the technical field of cable shielding materials. Background technique [0002] In the wire and cable industry, semi-conductive polymer materials are mainly used for conductor shielding and insulation shielding, that is, conductive fillers are added to the polymer matrix material, such as acetylene carbon black, conductive graphite powder, conductive carbon fiber, etc. These two shields are usually based on EVA in power cables. EVA is a thermoplastic elastomer, and its softness is not as good as that of rubber. It is often used in fixed-laying cables. For mobile cables, EVA is stretched due to the limitation of its VA content. The reason is: the higher the VA content, the better the elasticity and softness of EVA, but its price i...

AI Technical Summary

Problems solved by technology

[0011] The present invention aims to solve the problems of shielding materials in the prior art that are not resistant to light and radiation, and provides a radiation-resistant semi-conductive silicone rubber shielding material for cables and a preparation method thereof. The semi-conductive shielding material has heat resistance, The characteristics of good radiation and processing performance

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