High-temperature resistance PTC polymer conductive material and preparation method thereof

Abstract

The invention discloses a high-temperature resistance PTC polymer conductive material and a preparation method thereof. The material comprises following composition raw materials: metallocene polyethylene, furan resin, methyltrissilane, straw ash, modified montmorillonite powder, carbon fiber, N,N'-phenylenedimaleimide, anti-aging agent ODA, anti-oxidant DLTP, 2-(carboxyethyl)-triphenyl phosphonium chloride, and fatty alcohol polyoxyethylene ether. The method adopts metallocene polyethylene and furan resin as the main materials, which are cheap in price, and adds modified montmorillonite powder, carbon fiber, and straw ash as the auxiliary materials to improve elasticity modulus of the PCT polymer conductive material and increase the maximum stress and the breaking point stress, therefore the stretch resistance performance of the PTC polymer material is improved, furthermore, the resistance of the material is stable, the temperature of the material is homogenous, so that the service life of the material is prolonged.

Description

technical field [0001] The invention relates to the field of heat tracing cables, in particular to a high-temperature-resistant PTC polymer conductive material and a preparation method thereof. Background technique [0002] Electric heating cable is a new type of high-tech product. PTC polymer material for heating is distributed between two conductive cores. Its exterior is composed of polymer inner sheath, metal shielding net and polymer outer sheath. PTC high Molecular materials have been widely used in the field of modern electronics and electrical; at present, due to the limitation of processing conditions and environmental conditions in the production of electric heating cables in China, the tensile strength of the product is not high, and the crystallization behavior of the product is unstable and the crystallization is not stable. Perfect, and the residual thermal stress inside the PTC heating material will make the resistance of the PTC heating material unstable,...

AI Technical Summary

Problems solved by technology

[0002] Electric heating cable is a new type of high-tech product. PTC polymer material for heating is distributed between two conductive cores. Its exterior is composed of polymer inner sheath, metal shielding net and polymer outer sheath. PTC high Molecular materials have been widely used in the field of modern electronics and electrical; at present, due to the limitation of processing conditions and environmental conditions in the production of electric heating cables in China, the tensile strength of the product is not high, and the crystallization behavior of the product is unstable and the crystallization is not stable. Perfect, and the residual thermal stress inside the PTC heating material will make the resistance of the PTC heating material unstable, the temperature rise and fall uneven and shorten the service life of the material