What are the classifications of carbon black?

Carbon black is classified according to the manufacturing method: it is divided into contact carbon black, furnace carbon black, new process carbon black, thermal cracking carbon black, spray carbon black, channel carbon black and other methods.

Carbon black is classified by function: it is divided into hard carbon black and soft carbon black; the particle size of hard carbon black is below 40nm, and the particle size of soft carbon black is above 40nm.

Carbon black is classified by use: it is divided into rubber carbon black, pigment carbon black, conductive carbon black and special carbon black. Among them, pigment carbon black can be divided into many kinds, such as carbon black for ink, carbon black for coating, carbon black for masterbatch, etc.

Carbon black is classified into super wear-resistant carbon black, medium and super wear-resistant carbon black, ultra-high wear-resistant carbon black, fine particle furnace black, quick-pressing furnace black, general furnace black, high-definition furnace black, and semi-reinforced furnace black according to its performance. Black, fine particle thermal carbon black, medium particle thermal carbon black, easy-to-mix slot black, mixable slot black.

Conductive carbon black can be divided into conductive slot black carbon black (cc), conductive furnace carbon black (CF), superconducting furnace carbon black (SCF), and extra conductive furnace carbon black (XCF) according to its electrical conductivity and manufacturing method. )Wait. Acetylene carbon black (ACEF) is also a carbon black with good electrical conductivity.

Carbon black is classified according to ASTM standards, and my country began to use the American ASTM1765-81 classification and naming in the 1980s. The nomenclature consists of four digits, the first symbol being N or S, which represents the vulcanization rate. Among them, N represents normal vulcanization rate; and S represents slow vulcanization rate. There are three numbers after the N or S symbol. The first number represents the average particle size range of carbon black; the second and third digits have no clear meaning and represent the difference between different brands in each series.