▎ 摘　　要

NOVELTY - Double-spiral flexible fabric-based intelligent fireproof wire based on thermoelectric and piezoresistive effects, comprises a flexible central conductive core, a double helix intermediate functional layer and an outer flame retardant layer. USE - The double-spiral flexible fabric-based intelligent fireproof wire based on thermoelectric and piezoresistive effects, is useful in the intelligent fire protection engineering in high-rise buildings, and used as decoration material for high-rise buildings. ADVANTAGE - The wire can tightly cover the whole device, which effectively avoids the problem that the functional medium is easy to fall off in the repeated test process, improving the stability and reliability of the intelligent fire-proof wire. The double-spiral middle functional layer has pressure-resistance coupling can respond to different frequencies of tap, trample and joint bending and other common actions. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the double helix flexible fabric-based smart fireproof wire based on thermoelectric and piezoresistive effects, involving (a) using the base material comprising solid silica gel and platinum vulcanizing agent in a mass ratio of 100:(1-3), adding to an open mixer, stirring for 30-50 minutes, adding 60-90 vol.% metal powder to the base material, using an open mixer to stir for 2-3 hours, adding to an extruder, curing, forming under the temperature adjustment of 110-150℃, and making a flexible central conductive core with a diameter of 0.2-1 mm, (b) magnetically stirring the thermally sensitive conductive material and deionized water for 12-24 hours at a concentration ratio of 2-10 %mass, ultrasonically procssing for 30-60 minutes to form a uniformly mixed water dispersion of the thermally sensitive conductive material, inserting two flexible central conductive cores into two tubular flame-retardant glass fiber fabrics with the same inner diameter, soaking in the water dispersion of heat-sensitive material as the base material for 5-8 times for 5-10 minutes each time, double-helix twisting two tubular flame-retardant glass fiber fabrics with a central conductive core, fixing the double-helix structure with clips, and placing on a heating table for drying at 80-110℃ for 1-3 hours, and (c) adding the heat shrinkable fabric sleeve with a diameter of 0.5-5 mm to the liquid flame retardant, soaking for 30-50 minutes, placing on a heating table, drying at 70-110℃ for 1-2 hours to form a flame-retardant heat-shrinkable fabric sleeve, adding the double-helix twisted intermediate functional layer with a central conductive core to a flame-retardant heat-shrinkable fabric sleeve, heating with a heat gun at 120-170℃ for 1 miniutes, and tightly wrapping the flame retardant heat shrinkable fabric sleeve around the double helix intermediate functional layer.