Carbon black itself is a semiconductor material. Conductive carbon black has a low resistivity, which can make rubber or plastic have a certain conductivity. It is used in different conductive or antistatic products, such as antistatic or conductive rubber, plastic products, cables material; it can also be used as a raw material for dry batteries.
Conductive carbon black can be divided into conductive channel black (CC), conductive furnace carbon black (CF), superconductive furnace carbon black (SCF), special conductive furnace carbon black (XCF), etc. . Acetylene carbon black (ACEF) is also a carbon black with good electrical conductivity.
Among them, anti-static products: conductive foam tube, charging roller, static eliminator, anti-static conveyor belt, anti-static rubber sheet, anti-static box, hollow board, anti-static tube, medical rubber products, carpet, copier roll, printing machine roll , Packaging films for electronic components, explosion-proof cables; there are also anti-static table mats, anti-static soles, etc.
Conductive products: cable shielding materials, surface heating elements, conductive films, elastic electrodes, printed circuits, conductive coatings, conductive inks, conductive fibers, conductive leather products and adhesives. Mine conveyor belts, mine plastic pipes, mine air ducts, etc.
As early as the 1990s, our country developed and produced V series conductive carbon black products by using the oil furnace method. On the basis of improving the process, we developed SL series conductive carbon black with larger surface area, higher porosity and better conductivity. product.
Well-known foreign conductive carbon blacks include Ketjenblack (Kejen Black) series superconducting carbon black (Ketjenblack EC-300J and EC-600JD) from Japan Lion King, VXC series conductive carbon black from Cabot CABOT, Evonik Degussa The company produces PRINTEX XE2-B, PRINTEX L6, HIBLAXK 40B2, etc.
As far as the current situation of carbon black is concerned, the manufacturers of conductive carbon black in my country are still far from meeting the large demand of the market. Many enterprises still rely on imports. The technology of conductive carbon black has not yet reached the international advanced level. In terms of market price, imported conductive carbon black is significantly higher than domestic conductive carbon black.
Proportion of conductive carbon black used in rubber products
Antistatic rubber sheet formula information (for reference only)
1. SBR (NBR) 1.5
2. Reclaimed rubber 15
3. Light calcium 30
4. Carbon black 3.8-4
5. Operating oil 3.0-3.2 (CD-1)
6. Additives