High temperature and high voltage resistant cable

Abstract

The invention belongs to the field of cables, and particularly relates to a high temperature and high voltage resistant cable. The cable comprises a conductor and a sheath layer externally wrapping the conductor, the sheath layer is orderly composed of an insulating layer, a mica belting layer, a low-smoke halogen-free flame retardant polyolefin inner jacket, a woven shielding layer, a low-smoke halogen-free flame retardant polyolefin outer jacket and an outer sheath from inside to outside; material of the insulating layer and material of the outer sheath both are modified fluoroplastic for cables, and the modified fluoroplastic for cables comprises the following constituents in parts by weight: 60-80 parts of polytetrafluoroethylene, 10-20 parts of wear-resistant agent, 5-10 parts of fire retardant, 7-16 parts of plasticizer, 5-9 parts of filler, 1-3 parts of antioxidant, 1-3 parts of paraffin oil, 0.1-0.2 parts of ratproof master batch and 0.1-0.2 parts of temite preventing master batch. The structure above can perform multi-angle protection for the cable, and can effectively reduce influence of high temperature and high voltage generated when conducting the conductor or outside severe environment on service life of the cable.

Description

technical field [0001] The invention belongs to the field of cables, in particular to high temperature and high voltage resistant cables. Background technique [0002] With the rapid development of my country's economy, my country's subways, nuclear power plants, optoelectronic communications and other fields have developed at an unprecedented speed, and the consumption of electricity has also increased rapidly. An unprecedented test. For the field of ultra-high voltage electric energy transmission, especially in the field of nuclear power, the wires will generate a lot of heat during the working process and cause the cable to heat up. The cables of traditional materials are prone to aging and cracking under such high temperature and high voltage conditions for a long time. Afterwards, the wires will be exposed outside, and the harsh environment outside the cable, such as oil and water, chemical corrosion, and biological gnawing, will always damage the protective layer of th...

AI Technical Summary

Problems solved by technology

For the field of ultra-high voltage electric energy transmission, especially in the field of nuclear power, the wires will generate a lot of heat during the working process and cause the cable to heat up. The cables of traditional materials are prone to aging and cracking under such high temperature and high voltage conditions for a long time. Afterwards, the wires will be exposed outside, and the harsh environment outside the cable, such as oil and water, chemical corrosion, and biological gnawing, will always damage the protective layer of the cable, which will cause major safety hazards to people's lives and property.

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