N660 and N330 carbon black are two commonly used types of carbon black in rubber, but these two types of carbon black have some differences in their usage and effects. Here we will introduce the differences between N660 and N330 carbon black, so that you can further understand the differences between them.
Naming rules for carbon black:
The international naming method uses four characters, with the first character being N or S. N represents normal vulcanization speed, while S represents non-normal vulcanization speed. The N100 series has a particle size of 11-19, the N200 series has a particle size of 20-25, the N300 series has a particle size of 26-30, and the N600 series has a particle size of 49-60.
Which is bigger, the particle size of N330 or N660 carbon black?
Compared to N330 carbon black, the particle size of N660 carbon black is slightly larger.
Usage differences between N660 and N330 carbon black:
N660 carbon black is suitable for various rubber products. Compared with semi-reinforcing carbon black, it has a higher structure, finer particles, easy dispersion in the rubber material, higher tensile strength, tear resistance, and stress at a fixed stretch, lower deformation, low heat generation, and good elasticity and resistance to flexing. It is mainly used for tire treads, inner tubes, bicycles, hoses, tapes, cables, shoes, rolling products, and model products.
N330 is a type of carbon black with good reinforcing performance, which can provide better stretching performance, tear resistance, wear resistance, and elasticity to rubber particles. It is mainly used in tire treads, curtain rubber, tire sides, and various rubber industrial products.
Difference between Carbon Black N660 and N330 in Apparent Density and Specifications
Rubber carbon black is divided according to its apparent density:
N110 apparent density is 0.335g/cm3
N220 apparent density is 0.345g/cm3
N330 apparent density is 0.375g/cm3
N550 apparent density is 0.360g/cm3
N660 apparent density is 0.425g/cm3
N774 apparent density is 0.495g/cm3
The following are the specifications for Carbon Black N660 and N330:
Standard N660 carbon black specifications:
Iodine Adsorption Value (g/kg): 36±6
CTAB Surface Area (103m2/kg): 29-43
Nitrogen Adsorption Surface Area (103m2/kg): 29-41
Statistical Thickness Surface Area (103m2/kg): 34±9
DBP Absorption Value (10-3m2/kg): 90±7
Tint Strength (%): 66-82
Heating Loss (%): ≤1.5
Ash Content (%): ≤0.7
Tapped Density (kg/m3): 440±40
Impurities: None
Residue on 100 Mesh Sieve (%≤): 0.02
300% Modulus Stress (Mpa): -2.6±1.6
Tensile Strength (Mpa): -4.5
Elongation at Break (%): -10
Standard N330 carbon black specifications:
Oil Absorption Value (10―5m3/kg): 102±7
Compressed Sample Oil Absorption Value (10―5m3/kg): 80―96
CTAB Surface Area (103m2/kg): 73―91
STSA (103m2/kg): 75±9
Nitrogen Adsorption Surface Area (103m2/kg): 71―85
Tinting Strength (%): 96―112
Ash Content (%): ≦0.5
Residue on 45 Mesh Sieve (%): ≦0.001
Residue on 325 Mesh Sieve (%): ≦0.02
Residue on 100 Mesh Sieve (%): ≦0.1
Impurities: None
300% Modulus Stress: -0.9±1.6