High-strength high-flexibility flame-retardant cable sheath rubber and preparation method thereof

Abstract

The invention discloses a high-strength high-flexibility flame-retardant cable sheath rubber and a preparation method thereof. The sheath rubber comprises 100 parts of chlorosulfonated polyethylene, 15-25 parts of plasticizer, 3-7 parts of compound stabilizer, 40-60 parts of thermal decomposition process carbon black, 15-25 parts of active calcium carbonate, 3-6 parts of antimony trioxide, 2-4 parts of vaseline, 1.5-4.5 parts of antioxidant, 8-10 parts of magnesium oxide and 10-15 parts of epoxy resin. In the cable sheath rubber disclosed by the invention, through the optimal combination of chlorosulfonated polyethylene and other components, the material has the characteristics of high strength, high flexibility and flame retardancy, and at the same time, the material has the advantages of oil resistance, heat resistance, fire resistance, weathering resistance, ozone resistance, acid and base resistance, chemical resistance and the like.

Description

[0001] [0002] technical field [0003] The invention relates to a polymer material in the field of power cables, in particular to a high-strength, high-flexibility flame-retardant cable sheath rubber and a preparation method thereof. The sheath rubber achieves high strength, high flexibility, Flame retardant and other properties. Background technique [0004] With the development of science and technology and the advancement of industrialization, the total output value of my country's wire and cable industry in the world has surpassed that of the United States, becoming the world's largest producer of wire and cable. Although the wire and cable industry is a basic industry, it currently accounts for 1 / 4 of the output value of my country's electrical industry, becoming the second largest industry in my country after automobiles. From the perspective of China's rapid economic development and historical growth, in recent years, my country's cable demand has increased by 15% e...

AI Technical Summary

Problems solved by technology

[0007] The sheath rubber of existing rubber-sheathed cables is generally made of natural / styrene-butadiene rubber, neoprene, silicon rubber or other synthetic rubber. Due to the implementation of new standards, the application of natural / styrene-butadiene rubber is greatly restricted; neoprene rubber Although it has good physical and mechanical properties, oil resistance, heat resistance, flame resistance, sunlight resistance, ozone resistance, acid and alkali resistance, and chemical reagent resistance, its disadvantages are poor cold resistance and storage stability, and it is generally not used alone. It is used in conjunction with natural rubber; the mechanical properties of silicone rubber are not ideal, and the use occasions are relatively limited, generally used in high temperature resistant occasions; other synthetic rubber formulation technologies are not satisfactory, and it is difficult to solve the contradiction between high strength and high flexibility

In addition, the use of flexible rubber sheath cables is relatively harsh, and the reciprocating bending may easily cause fatigue and aging of the sheath rubber.