Fluororubber-modified PVC (polyvinyl chloride) cable material for heat-resistant automobile wiring harness and preparation method of fluororubber-modified PVC cable material

Abstract

The invention discloses a fluororubber-modified PVC (polyvinyl chloride) cable material for a heat-resistant automobile wiring harness. The fluororubber-modified PVC cable material is prepared from the following raw materials in parts by weight: 65-70 parts of PVC, 7-8 parts of a calcium-zinc stabilizing agent, 40-50 parts of trioctyl trimellitate, 2.5-3 parts of triallyl isocyanurate, 0.2-0.3 part of dicumyl peroxide, 4-5 parts of calcined kaolin, 20-25 parts of hexafluoropropylene ternary copolymer rubber, 4-4.5 parts of nano-zinc oxide, 2.5-3 parts of bisphenol AF, 1-1.5 parts of toluene diisocynate, 2.4-2.8 parts of zinc diethyl dithiocarbamaate, 5-6 parts of polyether sulfone, 1.3-1.6 parts of epoxy butyl oleate, 1.2-1.6 parts of xylene, 18-22 parts of thermoplastic polyurethane and 0.8-0.9 part of an antioxidant 1010. The cable material disclosed by the invention can be continuously used at a high temperature, can still be kept at stable performance in an environment with a rapidly changing temperature, and is suitable for fabrication of cables of automobile oil tanks.

Description

technical field [0001] The invention relates to the field of cable materials, in particular to a fluororubber modified PVC cable material for heat-resistant automobile wiring harnesses and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane (TPU) is a kind of elastomer with excellent performance, which has excellent acid and alkali resistance, oil resistance and mechanical properties, and has a wide temperature range. It can be used as a toughening agent or modifier for PVC materials. TPU can also improve the processing fluidity of PVC materials and play a plasticizing effect. However, due to the high price of TPU and poor flame retardancy, its application is limited. PVC has many grades, wide application and low cost, and is an important general-purpose plastic. Mixing and crosslinking TPU and PVC can effectively reduce the cost of TPU, improve performance and expand its application range; on the other hand, the addition of TPU can effec...

AI Technical Summary

Problems solved by technology

[0003] The formula used in the article "Development of PVC / thermoplastic polyurethane cross-linked cable material for automobiles": 100 parts of PVC, 8 parts of calcium zinc stabilizer, 50 parts of TOTM, 3 parts of TAIC, 0.2 parts of DCP, 30 parts of TPU, 0.8 parts of antioxidant, Appropriate amount of other additives can produce qualified cable materials for automobiles, but the cable materials are not good in heat resistance, oil resistance, ultraviolet resistance, oxidation resistance, corrosion resistance, atmospheric aging resistance, air tightness and wear resistance. , low temperature resistance and other aspects are not satisfactory