Sheath material used for coal mine cable

Abstract

The invention discloses a sheath material used for a coal mine cable. The sheath material used for the coal mine cable is characterized by being prepared from, by weight, the raw materials of 55-100 parts of elastomeric chlorinated polyethylene, 45-80 parts of resin type chlorinated polyethylene, 35-65 parts of white carbon black, 10-20 parts of magnesium oxide, 9-20 parts of magnesium hydroxide, 25-55 parts of chlorinated paraffin, 35-45 parts of cable powder, 1-3 parts of silane coupling agents A-172, 10-20 parts of dioctyl phthalate, 15-30 parts of flame retardant CM80AT, 10-20 parts of flame retardant TCEP, 1-3 parts of paraffin, 2-5 parts of polyethylene wax and 6-18 parts of vulcanizing agents. The sheath material has good thermo-oxidative ageing resistance and flame retardancy and has the advantages of being good in elasticity, high in tensile strength, good in tear resistance and calendaring performance, low in cost and the like.

Description

technical field [0001] The invention relates to a cable sheath material, which belongs to the technical field of chemical industry, in particular to a sheath material for coal mine cables. Background technique [0002] At present, the main materials commonly used as cable sheaths in China mainly include chloroprene rubber, chlorosulfonated polyethylene rubber and other materials. The structural components of the materials are different and their properties are also different. Chloroprene rubber has good mechanical properties at room temperature, but when the temperature is low, the mechanical properties become poor, the cold resistance is not good, it will slowly harden after long-term storage, lose adhesion, poor fluidity, poor bonding performance, and poor calendering performance. The price of neoprene is relatively high. If it is used alone as the main material of the cable sheath, the flame retardancy is poor and the cost is relatively expensive. Chlorosulfonated polyet...

AI Technical Summary

Problems solved by technology

Chloroprene rubber has good mechanical properties at room temperature, but when the temperature is low, the mechanical properties become poor, the cold resistance is not good, it will slowly harden after long-term storage, lose adhesion, poor fluidity, poor bonding performance, and poor calendering performance. The price of neoprene is relatively high. If it is used alone as the main material of the cable sheath, the flame retardancy is poor and the cost is relatively expensive.

Chlorosulfonated polyethylene rubber is an elastomer made of polyethylene after chlorination and sulfonation treatment. With the increase of chlorine content, the compression set and the brittleness at low temperature increase, the elasticity becomes poor, and the tensile strength Poor, oil resistance is not as good as chlorinated polyethylene rubber, poor heat and oxygen aging resistance, poor flame retardancy, contains toxic carcinogens, and the price is relatively expensive. It is limited as a sheath material for cables in coal mines