The conductivity of conductive carbon black depends on its microcrystalline structure, particle size distribution characteristics and surface structure. Among them, the structure of conductive carbon black plays a leading role. The structure of the so-called conductive carbon black is a state formed by the fusion of carbon atoms during the generation process. When the carbon atoms continue to grow, many fused atoms are connected to form a three-dimensional space and a chain branch structure, forming a one-time structure or structure, and a strong chemical bond is formed between the crystal nuclei. Between aggregates, van der Waals forces mainly form, known as secondary or primary structures. The polymers connected by these aggregate particles are chain branches, which are easily damaged and the process is reversible. In terms of particle size, the primary particle size is generally 10-100nm; the aggregate particle size, that is, the carbon black particle size is generally 50-500nm; the formed attachment exceeds 1μm. For high conductivity carbon black, due to its preparation characteristics, its apparent particle size is above 10 μm.
Conductive carbon black has the characteristics of high conductivity, high structure, irregular aggregates, small size (nanoscale), large specific surface area, rough, clean surface (less compounds), easy to mix with other materials, etc., and can effectively form an insulator three-dimensional The network structure can effectively improve the conductivity, and can give the product a conductive or anti-static effect.
Conductive carbon black is a product with good effect, low cost and poor physical properties among all conductive fillers.
According to its conductivity and manufacturing method, 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) wait. Conductive carbon black is a widely used chemical raw material. Due to its good conductivity and high cost performance, it is widely used in conductive and anti-static products, and it is becoming more and more popular in energy, lithium-ion batteries, lead-acid batteries and supercapacitors.