Classification of conductive fibers

According to the conductive composition, there are four main types of conductive fibers: metal fibers, carbon black fibers, conductive metal compound fibers, and conductive polymer fibers. Metal fiber has good electrical conductivity, heat resistance and chemical corrosion resistance, but for textiles, metal fiber has low cohesion, poor spinning performance, and limited color of the finished product. It is mostly used for carpets and work clothes fabrics. The price is when high-fineness fibers are made expensive. Carbon black fiber is a conductive fiber made by mixing carbon black and fiber-forming material by sheath-core spinning. In addition to maintaining the original mechanical properties of the fiber, it also obtains a certain degree of conductivity, but the color is single, usually black Or gray-black, subject to certain restrictions in use. Using viscose, acrylic fiber, and pitch as the raw silk, the carbon fiber after carbonization has good electrical conductivity, heat resistance, chemical resistance, but high modulus, lack of toughness, no bending resistance, no heat shrinkage, and limited application range . Using ordinary fiber as the substrate, the fiber surface of the fiber is coated with carbon black by the coating method, the carbon black is easy to fall off, the hand feel is not good, and the carbon black is not easy to be evenly distributed on the fiber surface. Conductive metal compound fiber, using copper, silver, nickel and cadmium sulfide, iodide or oxide as conductive material, made by mixed spinning method, adsorption method or chemical reaction method, with good fastness, among which copper and silver The compound also has certain additional functions, such as antibacterial and deodorization, but the cost of silver is relatively high, while the conductive fibers of copper, nickel and cadmium sulfide and iodide are inferior to carbon black fibers, and their electromagnetic shielding performance is general. For antistatic. Among the conductive polymer fibers, organic conductive fibers made by direct spinning of polymer conductive materials such as polyacetylene, polyaniline, polypyrrole, polythiophene, etc., are difficult to spin, cost more, and difficult to be widely used in textiles.