Cold-resistant cable with flexible protective layer

Abstract

The invention discloses a cold-resistant cable with a flexible protective layer. The cable is characterized by comprising the following raw materials in parts by weight: 80-120 parts of PVC (polyvinyl chloride) resin SG-2, 20-40 parts of TOTM (trioctyl trimellitate), 3-5 parts of epoxidized soybean oil, 6-10 parts of 70 chlorinated paraffin, 5-7 parts of antimony oxide, 0.3-0.7 part of antioxidant, 8-12 parts of calcined china clay, 3-7 parts of activated calcium carbonate, 5-9 parts of calcium-zinc compound stabilizer, 0.3-0.7 part of UV-531 and 20-40 parts of DOS (dioctyl sebacate). The cable has the beneficial effects that the cable has high temperature and cold resistance, is environment-friendly and practicable and can avoid open fire burning in the process of approaching fire sources; flames only spread in a limited range; residual flames or residue burning fire can be extinguished by self in a limited time; the outer protective layer of the cable can only become flexible because of approaching the fire sources and can not catch fire, thus protecting all kinds of other equipment and avoiding greater losses; in the process, the environment-friendly flame-retardant cable can not generate smoke or is low in smoke and can not generate plenty of heavy black smoke as ordinary electric wires, thus minimizing harms to human bodies.

Description

technical field [0001] The invention relates to the field of cable materials, in particular to a cold-resistant soft sheath cable. Background technique [0002] Polyvinyl chloride, referred to as PVC in English, is a thermoplastic resin polymerized by vinyl chloride under the action of an initiator. It is a homopolymer of vinyl chloride. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins. PVC is a white powder with an amorphous structure and a small degree of branching. The molecular weight of industrially produced PVC is generally in the range of 50,000 to 120,000, with a large polydispersity, and the molecular weight increases with the decrease of the polymerization temperature; there is no fixed melting point, it starts to soften at 80-85°C, and becomes viscoelastic at 130°C , 160 ~ 180 ℃ began to change into a viscous flow state; good mechanical properties, tensile strength of about 60MPa, impact strength 5 ...

AI Technical Summary

Problems solved by technology

However, due to the addition of 10% to 30%, it often affects the performance of plastics.