| abstract |
The invention relates to the technical field of insulating rubber compounds, in particular to a modified polyvinyl chloride flame-retardant and bending-resistant sheath rubber compound, a preparation method and a cable, comprising the following components in parts by weight: 90-100 parts of SG0 type polyvinyl chloride resin , 70-90 parts of environmental plasticizer, 20-30 parts of ethylene-n-butyl acrylate-carbonyl terpolymer, 10-15 parts of dioctyl maleate, 15-25 parts of modified polymer, composite flame retardant 8-15 parts of agent, 20-30 parts of magnesium hydroxide, 8-10 parts of high-efficiency and environmentally friendly calcium and zinc stabilizer, and 1-2 parts of lubricant. The modified PVC flame-retardant and bending-resistant sheath compound obtained by the formulation and process of the present invention not only has the characteristics of high tensile strength and high elongation at break, but also meets the temperature resistance level of ‑40℃‑105℃ , VW‑1 combustion grade, and at the same time meet the bending resistance requirements of 10 million times and UL 60℃ oil resistance, which solves the problem that industrial towline cables are difficult to meet the wide temperature resistance range and high bending times. |