The structure of pigment carbon black refers to the secondary agglomerate structure of carbon black, which is formed by the fusion of primary particles to form a branched chain structure.
Generally, pigment carbon black with relatively large and complex aggregates is called high-structure speciality carbon black, and the small range of aggregates is called low-structure speciality carbon black. This structural fusion is controlled by the reactor during the production process.
Structural properties of high structure 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 difference between high structure carbon black and low structure carbon black
The surface of general carbon black pigment is smooth and the distribution of aggregates is relatively narrow, that is, low-structure carbon black pigment. The appearance of high-structure carbon black aggregates is complex branched chain, which will be richer and more versatile.
When the temperature slowly increases, the oxidized functional groups on the surface of high-structure carbon black fall off, and the total acid content decreases, but the binding gum content increases. These are the differences between high structure carbon black and low structure carbon black, and they are also the advantages of high structure carbon black.
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