Conductive fiber refers to a fiber with a resistivity of 107 Ω·cm or less in a standard state (20 ° C, 65% relative humidity). It is a new functional fiber that appeared in the 1960s. The conductive fiber textile product is in the electronics industry. Important applications in the fields of clothing, medicine and precision instruments. According to the composition characteristics of conductive fibers, they can be divided into four categories:
1. Metal-based conductive fiber: mainly uses metal conductive property to make metal fiber by direct drawing method; or metal spraying method, firstly treats ordinary fiber, and then deposits metal by vacuum spraying or chemical electrocoating On the surface of the fiber, the fiber has the same electrical conductivity as the metal;
2. Carbon black conductive fiber: The conductive fiber is made by the conductive property of carbon black. For example, the carbon black and the common chemical fiber are made into a sheath-core type and a orange-shaped conductive composite fiber, and the surface of the ordinary fiber can also be coated with carbon. Black, or carbonized some fibers to make the fibers conductive;
3. Metal-based conductive fiber: made of a sulfide, an iodide or an oxide of copper or silver as a conductive material, mixed with a fiber-forming polymer, adsorbed on a fiber surface, or covered by a chemical reaction on a fiber surface. Conductive fibers, such conductive fibers may have additional functions such as antibacterial and deodorization depending on the type of metal ions added;
4. Conductive polymer fiber: an organic conductive fiber made by directly spinning a polymer conductive material such as polyacetylene, polyaniline, polypyrrole or polyfluorene, or adsorbing a conductive polymer substance on the surface of the fiber to make the fiber Has electrical conductivity.
