Low-smoke, zero-halogen and flame-retardant multi-core controlled cable sheath rubber for railway vehicles

Abstract

The invention discloses a low-smoke, zero-halogen and flame-retardant multi-core controlled cable sheath rubber for railway vehicles, comprising the following components by weight: 100 parts of crosslinked polyolefin, 2-5 parts of peroxide vulcanizing agent, 1-4 parts of auxiliary vulcanizing agent, 1-5 parts of age resister, 10-20 parts of flame retardant and 3-10 parts of reinforcing agent, wherein the ethylene-vinyl acetate EVM700 produced by the DuPont Company is preferably selected as the crosslinked polyolefin. The cable sheath rubber is fast in sulfuring, short in vulcanizing time and low vulcanizing temperature, has good mechanical and physical performances and is environment-resistant, age-resistant, flame retardant and fireproof.

Description

technical field

[0001] The invention relates to a cable sheath rubber, in particular to a multi-core control cable sheath rubber for low-smoke, halogen-free, flame-retardant rail vehicles. Background technique

[0002] Generally, it is used as the outer sheath layer of the core of the multi-core cable to protect the insulating core. The mechanical and physical properties, environmental resistance, aging resistance, flame retardant and fire resistance have high performance requirements. Traditional sheaths mostly use chlorosulfonated polyolefin mixtures. However, with the localization of locomotives and the requirements for low-smoke, halogen-free and flame-retardant environmental protection, traditional materials are no longer suitable. According to the requirements of railway products, multi-core cable insulation sheaths must use halogen-free flame-retardant cross-linked polyolefin mixture. However, after the insulated wire core is vulcanized and formed, it needs to be vulc...

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