Silicone rubber insulating sizing material, high-temperature and high-pressure resistant silicone rubber wire and preparation process

Abstract

The invention discloses a silicone rubber insulating sizing material, a high-temperature and high-pressure resistant silicone rubber wire and a preparation process of the wire; the high-temperature and high-pressure resistant silicone rubber wire is made of the silicone rubber insulating sizing material; the silicone rubber insulating sizing material comprises raw silicone rubber, white carbon black, hydroxyl silicone oil, TiO2, aluminum hydroxide prepared through a vapour phase method, a foaming agent, a platinum catalyst, colour master, a vulcanizing agent and the like; and an antistatic agent can also be added properly. The silicone rubber insulating sizing material disclosed by the invention can satisfy the environment-friendly requirements and has excellent high-temperature and high-pressure resistant performances; the addition proportion of TiO2 is proper; the heat-resistant effect is increased while the purity and the ageing resistance of rubber cannot be influenced; the cost is relatively lower; the aluminum hydroxide prepared through the vapour phase method is small in grain size and few in impurity; the flame retardant efficiency is increased while withstand voltage influence of aluminum hydroxide prepared through a precipitation method is little; the platinum catalyst is capable of isolating air under the catalytic action of platinum, so that flame is extinguished; the foaming agent has the effect of isolating air; and thus, the flame retardant property is increased.

Description

technical field

[0001] The invention relates to the technical field of silicone rubber electric wires, and more specifically relates to a silicone rubber insulating rubber material, a high temperature and high pressure resistant silicon rubber electric wire and a preparation process for the electric wire. Background technique

[0002] EPDM rubber has excellent electrical insulation performance and corona resistance performance, high breakdown voltage, good mechanical properties and elasticity, good heat resistance and oxidation resistance, and also has good moisture resistance and UV resistance, especially suitable for Manufacture of electrical insulation products, widely used in the preparation of wire and cable.

[0003] However, with the market's increasing environmental protection requirements for products, more and more rubbers such as EPDM cannot meet market demand, but at the same time most products using EPDM rubber characteristics still require high resilience, high...

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