The naming system takes into account the vulcanization speed and structure of carbon black compounds, and consists of 4 systems. The first letter represents the English letter representing the vulcanization speed of the rubber compound. N stands for normal vulcanization speed, and S stands for slow vulcanization speed. The first three letters of the last three letters represent the carbon black nitrogen surface area range. The second and third numbers reflect different degrees of structure. (These are all national standards)

220N220 is suitable for a variety of rubbers. Its abrasion resistance is 10% -20% higher than N330. It can give rubber pellets high tensile strength and tear resistance, and has a certain electrical conductivity. Mainly used for tread rubber of passenger tires and passenger tires, and rubber products that require high strength and high wear resistance

550N550 is suitable for natural rubber and various synthetic rubbers. It is easy to disperse, can give rubber a high stiffness, fast extrusion speed, small mouth expansion, and smooth extrusion surface. The vulcanizate has good high temperature performance and thermal conductivity, and also has better reinforcement performance, elasticity and resilience. Mainly used in tire cord rubber, sidewall, inner tube and extruded and calendered products.

N660 This product is suitable for various rubbers. Compared with semi-reinforced carbon black, it has a higher structure, finer particles, and is easier to disperse in rubber compounds. The tensile strength, tear resistance, and tensile stress of vulcanizates Higher, but less deformation, low heat generation, good elasticity and resistance to flexion. Mainly used in tire curtain tape, inner tube, bicycle, hose, tape, cable, footwear and calendered products, model products, etc.

N774 is suitable for all kinds of rubber. This product is the carbon black with the largest particle size (the product particle size is 80-170nm) and the lowest structure other than thermal cracking carbon black. It is mostly used for the buffer layer and ply of tire carcass. Rubber compounds, hoses, extruded products, various industrial rubber products, as well as wires and cables, etc. This product can be filled in large quantities in rubber compounds. Its vulcanizates have high elongation, low heat generation, high elasticity, and good aging resistance. This product can also be used instead of thermal cracking carbon black.