Electric silicon rubber

Abstract

A conductive silicon rubber relates to a material used in the accessories of electric wire and cable, and comprises reinforced silicon rubber, acetylene carbon black, structural inhibitor, liquid silicon rubber and vulcanizing agent, wherein the acetylene carbon black is granular. The making process of the conductive silicon rubber is as follows: the acetylene carbon black, hydroxyl silicon oil and water are mixed according to the proportion of 100:4.5-5.5:0.2-0.5, and then are added in a granulator to be made into granules. The conductive silicon rubber has the advantages that: because acetylene carbon black, the main raw material of the conductive silicon rubber, is turned into spheric granules with the diameter approximately equal to 1 mm from the original powdery state after pretreatment, the conductive silicon rubber has increased stacking density and is nondusty and easy to disperse, thereby substantially improving manufacturing environment and doing good to the physical health of operation staff; moreover, the acetylene carbon black has good conductive effect and can meet the requirements of electrical property with a small amount of addition (15 to 22 percent). In addition, due to the addition of gluing auxiliary agent, liquid silicon rubber, the conductive silicon rubber can be well glued to insulating glue, thereby obtaining higher rate of qualified product as well as mechanical property and electrical property superior to the requirements of national standards.

Description

technical field [0001] The invention relates to a material for electric wire and cable accessories, in particular to silicone rubber used for evacuating electric field stress at the cutting part of the cable outer shield. Background technique [0002] Silicone Rubber (Silicone Rubber) 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 in phase with silicon atoms. Linked hydrocarbon or substituted hydrocarbon organic groups, this group can be methyl, unsaturated vinyl or other organic groups, this low unsaturation molecular structure makes silicone rubber have excellent heat aging resistance And weathering resistance, resistance to ultraviolet rays and ozone erosion. Due to the high flexibility of silicone rubber molecular chains and weak interaction between molecular chains, these structural features make the vulcanizate soft a...

AI Technical Summary

Problems solved by technology

But this kind of conductive silicone rubber is difficult to manufacture; mainly because the main component acetylene carbon black is in powder form, the particle size is generally about (30-50) nm, the specific surface area is large, and the bulk density is small, so it is difficult to produce in the production process. Scattered, easy to dust, affect the environment, unfavorable to the health of operators, easy to inhale into the lungs, and cause occupational diseases such as lung inhalation

Images