Analyze what is the structure of black cat carbon black

The structure of black cat carbon black is expressed by the degree of aggregation of carbon black particles into a chain or grape shape. Carbon black composed of aggregates composed of the size and shape of the aggregates and the number of particles in each aggregate is referred to as high structure carbon black. The commonly used oil absorption value indicates structurality. The larger the oil absorption value, the higher the structural properties of carbon black, and it is easy to form a space network channel, and it is not easy to damage. The high-structure carbon black particles are fine, the network chain is tightly packed, the specific surface area is large, and the unit mass particles are large, which is favorable for forming a chain-type conductive structure in the polymer, and acetylene black is preferred among many carbon black varieties. Carbon black particles with a wide particle size distribution are more conductive to the polymer than narrowly distributed carbon black particles, and this phenomenon is explained statistically. For carbon black with a wide particle size distribution, a small number of large-diameter particles require a large number, and smaller diameter particles are compensated. The carbon black with the same average particle size distribution has more total particles than the narrow carbon black.

form

Carbon black generally refers to carbon elemental particles, which are generally due to insufficient combustion of organic matter, in which hydrogen and oxygen are converted into water, and carbon is not sufficiently burned to break away from molecules and form carbon black.

form

Carbon black is composed of carbon, but is usually classified as an inorganic pigment. Carbon black is a black powdery substance in which hydrocarbons are incompletely burned or thermally cracked in the gas phase. Due to different production processes, various products with different properties can be obtained through different process conditions.

1) Microstructure of carbon black

The carbon black manufacturer anti-fatigue agent has a microcrystalline structure. In carbon black, the carbon atoms are arranged in a manner similar to graphite, forming a hexagonal plane, usually 3 to 5 such layers form a crystallite, due to each of the carbon black crystallites. In the graphite layer, the arrangement of carbon atoms is ordered, and the arrangement of carbon atoms between adjacent layers is disordered, so it is also called quasi-graphite crystal.

2) Particle size of carbon black

The particle fineness of the pigment carbon black can be as low as 5 nm. In general, the carbon black particles are not isolated, but a plurality of particles are interpenetrated through the carbon crystal layer to form a chain branch. Different production processes can obtain carbon black particles with a wide range of particle sizes. The products obtained by the lamp black production process are relatively rough, and the gas black production process can obtain fine products.

Carbon black in almost all particle size ranges can be obtained by the furnace black production process, and the carbon black of the same variety of black cat rubber has a particle size which is not completely the same, and exhibits a particle size distribution range. In general, the finer particles have a narrower particle size distribution.