A recyclable high and low temperature resistant high flexible refractory wire and its preparation method

Abstract

The invention discloses a recyclable high-low temperature resistant high-flexibility refractory wire and a preparation method thereof. The wire includes a conductor and an insulating layer covering the outside of the conductor; the conductor is nickel-plated copper multi-metal composite Stranded wire, the insulation layer includes a first insulation layer, a second insulation layer and a third insulation layer from the inside to the outside; the first insulation layer is a high-strength fiber yarn winding insulation layer, and the second insulation layer is The fire-resistant composite tape wraps the insulation layer, and the third insulation layer is a high-strength fiber yarn braided insulation layer. The invention adopts nickel-plated copper multi-metal composite stranded wire with a nickel content of not less than 27% as a conductor, and 1900°C-resistant high-strength fiber yarn winding, fire-resistant composite tape wrapping, and 1900°C-resistant high-strength fiber yarn braiding composite insulation, has fire-resistant , ultra-high temperature resistance, softness, chemical corrosion resistance, recyclable and other outstanding advantages.

Description

technical field [0001] The invention belongs to the technical field of wires, and in particular relates to a recyclable high-low temperature resistant high-flexibility fire-resistant wire and a preparation method thereof. Background technique [0002] In recent years, flexible mineral insulated fire-resistant cables BBTRZ and magnesia inorganic insulated copper-sheathed cables YTTW, which have been developed rapidly in China, can supply power in a short period of time when fires occur in public areas such as hospitals, elevators, and high-rise buildings, ensuring the safety of people's lives and property. This type of cable has a large bending radius and poor flexibility, so it is only suitable for fixed laying, and it will be scrapped directly under fire and cannot be recycled. At present, traditional domestic fire-resistant cables are fixedly laid, with large bending radius and poor flexibility. More importantly, the maximum temperature of fire-resistant flame test is only...

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Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the fire-resistant cable has a large bending radius, poor flexibility, and cannot meet the special requirements of rocket launch, fire fire rescue, etc. Provide a recyclable high and low temperature resistant high flexible refractory wire and its preparation method

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