High temperature-resistant, radiation-crosslinked, low-smoke, halogen-free and flame-retardant cable material for charging pile cables, and preparation method thereof

Abstract

The invention discloses a high temperature-resistant, radiation-crosslinked, low-smoke, halogen-free and flame-retardant cable material for charging pile cables, and a preparation method thereof. Thecable material comprises, by weight, 55-70 parts of ethylene-propylene-diene monomer rubber, 10-20 parts of ethylene-octene copolymer resin, 8-12 parts of maleic anhydride grafted modified resin, 8-10parts of crosslinked modified resin, 5-10 parts of polyethylene-acrylate rubber, 2-5 parts of polyphenylene ether, 60-90 parts of a flame retardant, 20-30 parts of a flame retardant synergist, 0.5-1part of polyethylene wax, 1.2-2 parts of an antioxidant, 0.9-1.2 parts of a crosslinking agent, and 0.1-0.3 part of a degradation inhibitor. The cable material of the invention can simultaneously meetthe requirements of softness, high flame retardancy, high and low temperature resistance, aging resistance, environmental crack resistance, high insulation, oil resistance, ozone resistance and ultraviolet light resistance.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a plastic particle and a preparation method thereof, in particular to a high-temperature radiation-resistant cross-linked low-smoke halogen-free flame-retardant cable material for charging pile cables and a preparation method thereof. Background technique [0002] Most of the charging piles are used in outdoor or underground damp environments, which puts forward higher requirements on the softness, mechanical physical and electrical properties of the charging pile cables, such as: low-smoke, halogen-free, flame-retardant, good elasticity, temperature resistance High grade (good heat aging resistance), low temperature resistance, tear resistance, good electrical insulation performance, oil resistance, ozone resistance, ultraviolet light resistance and other characteristics. [0003] At present, the charging pile cables all use halogen-free flame-retardant thermoplastic ela...

AI Technical Summary

Problems solved by technology

Halogen-free flame-retardant thermoplastic elastomer TPE has the advantages of good elasticity, good low temperature resistance, and convenient processing, but has the disadvantages of poor heat aging resistance, poor tear resistance, poor electrical insulation performance, poor oil resistance, and high smoke density. Problems are prone to occur during use, which brings safety hazards to new energy vehicles during charging

For example, Chinese patent application CN201410390759.5 discloses a modified TPE mixed material for electric vehicle charging pile cables and its preparation method. The TPE mixed material includes the following components by weight: 50-70 parts of thermoplastic elastomer, reinforcing agent 10-20 parts, 25-55 parts of flame retardant, 0.2-0.5 parts of lubricant, 0.1-0.3 parts of coupling agent, 0.1-0.3 parts of antioxidant, the strength of this material is low due to the large amount of flame retardant added , and the tear resistance, heat resistance and scratch resistance are poor, which limits its application in electric vehicle charging pile cables

Chinese patent application CN201611226350 discloses a 125°C irradiation cross-linked low-smoke halogen-free flame-retardant material for charging pile cables. The flame-retardant material includes the following raw material components and weight parts: 20-35 parts of base resin, equivalent 5-20 parts of compatibilizer, 30-60 parts of flame retardant, 1-5 parts of antioxidant, 1-6 parts of lubricant, 0.5-2.5 parts of cross-linking sensitizer, the softness of the material is poor, and the flame retardant General performance, and it is difficult to meet the requirements of UV aging resistance and crack resistance required for long-term outdoor use

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