The main characters of carbon black in rubber fender basically include structure, particle size and surface properties, which have a very important influence on the technological performance and reinforcing effect of rubber.
1.The structure of carbon black refers to the form of carbon black including primary structure and secondary structure. While carbon black is generated in the high temperature of incomplete combustion, particles chemically combine to form three-dimensional aggregates; it’s the primary structure of black carbon. Generally, the primary structure is not easy to be destroyed during the rubber processing. When two or more aggregates agglomerate into a loose structure due to Van Der Waals forces, and this is the secondary structure of carbon black.
2.Marine rubber fender carbon black particle size refers to the size of single particles of carbon black or the primary particles in the aggregate, the average particle size of carbon black for rubber fender is generally between 11 ~ 500 nm, the carbon black particle size is smaller, on an unit mass per unit volume, the total surface area of carbon black particles, that is, the greater the specific surface area of carbon black, carbon black and the greater the contact area of rubber.
3.The surface properties of rubber fender carbon black include surface roughness and surface chemistry. The surface roughness refers to the existence of microspores on the surface of carbon black particles with a few nanometers to several nanometers, which are generated by the erosion of carbon black by high temperature oxidizing gas during the generation process.