What is low structure and high structure pigment carbon black
The structure of pigment carbon black means that the secondary aggregate structure of carbon black is formed by the fusion of primary particles to form a branched chain structure. Pigment carbon blacks with relatively large and complex aggregates are usually called high-structure pigment carbon blacks, and those with small aggregates are called low-structure pigment carbon blacks. This structural fusion is controlled by the reactor during the production process.
Structural properties of high structural pigment carbon black
High-structure pigment carbon black is often used in the field of green tire manufacturing. It can maintain tire wear resistance and skid resistance, and can also reduce rolling resistance, making it more fuel-efficient and safer. Of course, this is inseparable from the structural characteristics of high-structure pigment carbon black.
The distinction between high structure carbon black and low structure carbon black
The surface of general pigment carbon black is smooth, and the distribution of aggregates is relatively narrow, that is, low-structure pigment carbon black. The appearance of high-structure pigment carbon black aggregates is complex branched chain, which will be more abundant and multi-functional. When the temperature increases slowly, the oxidized functional groups on the surface of the high-structure carbon black fall off, the total acid content decreases, but the content of the binder increases. These are the differences between high structure carbon black and low structure carbon black, and also the advantages of high structure carbon black.