▎ 摘　　要

NOVELTY - Heat-resistant soft semi-conductive shielding polypropylene cable material comprises 68.7-80.9 wt.% mixed compound homopolymer, 4.6-7.8 wt.% Lipowax (Saponified ester wax) OP wax, 0.24-0.46 wt.% antioxidant, and conductive filler (remaining amount). USE - Used as heat-resistant soft semi-conductive shielding polypropylene cable material. ADVANTAGE - The polypropylene cable material: can make the semi-conductive shielding polypropylene cable material having good breaking elongation at low temperature environment in the high cold area, which can ensure the elasticity and ductility of the semi-conductive shielding polypropylene cable material in the high cold and low temperature environment, reduce the hard and crisp phenomenon, can improve the tensile property of the semi-conductive shielding polypropylene cable material in the low temperature environment, ensure the elasticity of the cable outside, ensure the service life of the cable and the same conductive cross-linking type adding amount of conductive carbon black is far greater than non-cross-linking type; is non-cross-linked and added with less conductive carbon black, with environmentally-friendly low-carbon effect, but the material conductive performance and super-cleanliness is good than cross-linking type. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the heat-resistant soft semi-conductive shielding PP cable material, comprising (i) adding mixed compound homopolymer, Lipowax (Saponified ester wax) OP wax, antioxidant and conductive filler; (ii) mechanically stirring and mixing the compounded homopolymer for ultrasonic treatment for 10-20 minutes to obtain the composite mixed compounded homopolymer; (iii) taking half of the composite mixing homopolymer and step (i) half of conductive filler for ultrasonic vibration dispersion treatment for 10-20 minutes to obtain the mixed material A; (iv) mixing and stirring the Lipowax (Saponified ester wax) OP wax and antioxidant in the step (i) with the remaining composite mixed compound homopolymer and conductive filler to obtain the mixed material B; (v) placing the mixed material B from the main feeding port into the reciprocating mixer, placing the mixed material A from the secondary feeding port into the reciprocating mixer; and (vi) extruding the material by the reciprocating mixer, and then cutting, cooling, sieving and conveying.