Nonmetallic heating filament and preparation method thereof

Abstract

The invention discloses a nonmetallic heating filament and a preparation method thereof. The nonmetallic heating filament is made by taking a polyester/cotton yarn as a base material, coating a layer of a heating conductive polymeric compound coating on the external surface of the base material and finally drying the coating, wherein, a heating conductive polymeric compound is carbon composite conductive carbon paste, and the carbon composite conductive carbon paste comprises the following components in parts by weight: 1-2 parts of acrylic resin, 1-2 parts of polyurethane resin, 0.5-1 part of carbon black, 0.5-1 part of graphite, 0.1 part of a levelling agent and 0.1 part of a defoaming agent. The preparation method of the nonmetallic heating filament comprises the following steps: paying-off the yarn, soaking the yarn into the paste, shaping, drying, measuring resistance and taking-up the yarn. In the invention, the heating conductive polymeric compound is taken as a heating material and voltage is added to two ends of the heating conductive polymeric compound so that the heating conductive polymeric compound can radiate energy outwards in a far infrared manner, and a far infrared ray has thermal action, thus achieving the heating purpose.

Description

technical field [0001] The invention relates to a non-metal heating wire and a preparation method thereof. Background technique [0002] We know that the principle of metal heating is: after the metal wire is energized, it generates heat due to its own resistance, and then dissipates the heat in the form of heat conduction. [0003] Metal heating wires are widely used in China. For example, the vast majority of existing electric blankets are made of metal heating wires, and their quality assurance period is generally ten years. [0004] The metal heating wire is relatively hard, and it will be broken if it is bent many times during use. On the one hand, it will affect the use, and on the other hand, it will easily cause safety hazards. This requires the user to be very careful during use to avoid bending the metal heating wire many times. [0005] Since the civil electricity in our country is 50Hz alternating current, a periodically changing electromagnetic wave field will...

AI Technical Summary

Problems solved by technology

[0006] However, because the metal heating wire is relatively expensive, people expect a new non-metallic heating wire to replace the metal heating wire to achieve the effect of heating and heat preservation.