Explanation

Generally, it refers to the fiber whose specific resistance is less than 10 ^ 7 Ω· cm in the standard state. It is a lightweight and soft conductive material. There are generally three types: self conductive, such as metal fiber, carbon fiber and organic electroconcluctive fiber. According to the distribution of conductive components, organic electroconcluctive fiber can be divided into four types: evenly added, coated, composite and copper complex. The uniform addition type is to add silver powder, copper powder, carbon black, graphite powder, carbon nanotube, graphene and nickel compound powder according to the demand, so that ordinary synthetic fiber such as polyester, polyamide and polyacrylonitrile fiber have certain conductivity, and have the advantages of small relative density, certain elasticity and flexibility, not easy to get dust, washable and easy to process, but the conductivity is limited; The coated type is that the filamem or fabric surface is coated with a layer of metal by electroplating or electroless plating, as well as vapor deposition, which endows the fiber with good conductivity; The composition type can be divided into skin core type, conjugated (parallel) type and island type according to different composition forms. It is characterized by that one component contains a high proportion of conductive particles so that conductive particles can be close to or contacted. It has good conductivity, and the other component is pure fibrous polymer. It has good mechanical properties, so as to obtain organic electroconcluctive fiber with good mechanical properties and conductivity; Copper complex type is to immerse copper sulfate into polyacrylonitrile fiber by impregnation method, and then treat it with sodium thiosulfate to make copper sulfate in polyacrylonitrile fiber transformation into copper sulfide complex with conductivity. Electroconcluctive fiber can be used as light and flexible conductor, heating element and electromagnetic wave shielding materials. When mixed with 0.1% -5.0% electroconcluctive fiber in ordinary synthetic fiber, it has anti-static property, so it can be used to prepare dust-free clothes, sterile clothes, surgical clothes, anti-static work clothes, carpets, blankets, filter bags, electric brushes, artificial lawns, etc.

Classification