Mine electric cable rubber sheath material and preparation process thereof

The present invention discloses a mine electric cable rubber sheath material and a preparation process thereof. The mine electric cable rubber sheath material comprises, by weight, 20-30 parts of chlorinated polyethylene, 5-15 parts of a chloroprene rubber, 2-4 parts of magnesium oxide, 0.3-0.8 part of zinc oxide, 0.3-1.5 parts of dibasic lead sulfate, 0.2-1.2 parts of tribasic lead sulfate, 0.2-0.5 part of 4,4'-dioctyl diphenylamine, 0.3-0.8 part of N-N-phenyl-p-phenylenediamine, 0.2-0.4 part of RD, 0.2-0.4 part of N,N-dimethylaniline, 3-6 parts of trioctyl trimellitate, 1-3 parts of epoxy soybean oil, 2-7 parts of 70# chlorinated paraffin, 10-18 parts of high wear-resistant carbon black, 2-5 parts of diantimony trioxide, 10-20 parts of hydrotalcite, 11-15 parts of ammonium polyphosphate, 3-6 parts of precipitated silica, 4-9 parts of modified calcined nanometer pot clay, 0.2-0.4 part of gamma-mercaptopropyl triethoxysilane, 0.8-1.2 parts of Trimethylolpropane trimethacrylate, 0.7-1.2 parts of triallyl isotricyanate, and 1.2-1.3 parts of triallyl cyanurate. According to the present invention, the tensile strength is more than 12 Mpa, the elongation at break is greater than 350%, the aging performance and the wear resistance of the sheath are improved, the aging temperature can achieve 135 DEG C, the good weather resistance is provided, and the volume resistivity of the material is improved.