Electric wire and cable for high-speed train and production method

Abstract

The invention discloses an electric wire and cable for a high-speed train and a production method. The electric wire and cable have the advantages that high-low temperature resistance is achieved, the structure is stable, oil resistance is good, low smoke zero halogen flame retarding is achieved, and electrical performance and mechanical physical performance are good. The electric wire and cable for the high-speed train comprise a conductor. An isolation layer is arranged outside the conductor. An inner insulation layer and an outer insulation layer are arranged outside the isolation layer in a double-layer-co-squeezing mode. The inner insulation layer is formed by 150 DEG C irradiation crosslinked polyethylene. The outer insulation layer is formed by 150 DEG C irradiation crosslinked oil-resisting low smoke halogen-free flame retardant polyolefin. The production method of the electric wire and cable for the high-speed train comprises the steps that the conductor is subjected to lapping to form the isolation layer; insulation layer squeezing is carried out, and irradiation crosslinking processing is carried out, wherein the inner insulation layer is formed by 150 DEG C irradiation crosslinked polyethylene, the outer insulation layer is formed by 150 DEG C irradiation crosslinked oil-resisting low smoke halogen-free flame retardant polyolefin, and insulation materials of the inner insulation layer and the outer insulation layer are subjected to modification processing by radiation crosslinking.

Description

technical field [0001] The invention relates to a cable, in particular to a wire and cable for high-speed trains and a production method. Background technique [0002] With the gradual improvement of China's rail transit network, the market share of rail transit vehicles continues to increase, and the demand for wires and cables for high-speed trains in domestic rail transit construction will also continue to increase. It is estimated that by 2020, my country's new urban rail transit lines will reach more than 5,000 kilometers , The investment is very huge, and the market prospect of wire and cable for high-speed trains brought along with it is very promising. Usually about 80 cables for rolling stock are needed per kilometer of subway ~ 1 million yuan, my country's urban rail construction will bring about a total demand of about 45 billion yuan. It is estimated that the total demand for special cables for national rail transit in the next 10 years will average about 2 billi...

AI Technical Summary

Problems solved by technology

Unable to reach the specified operating temperature or unable to meet the electrical insulation performance and low smoke, halogen-free, flame retardant characteristics at the same time

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