The nature of carbon black

Blackness
Carbon black blackness is presented with a black intensity. Carbon black as a coloring, the black level is mainly based on absorption of light, the specific

concentration of carbon black, carbon black powder more small, the higher the degree of light absorption. By the carbon black level in addition to the internal light

absorption, but also by the geometry of the surface of the particles arising from the impact mechanism having a brightening effect of light scattering, which reduces

the black level. As the particle size decreases, the lower degree of light scattering. Only for very fine carbon black , increase the concentration of carbon black in

order to improve the black level, the coarse carbon black, a dominant factor and degree of light scattering increases and increase the number of carbon black, the

black level but reduced accordingly.
Dispersion
Pigment Black finer points of contact between the carbon black aggregates will be more stronger cohesion between the results, when the pigment black mixed material,

the carbon black was uniformly distributed initial start, then the function of the dispersion to be it large to the carbon black particles separated, and ultimately

achieve the highest blackness and coloring. Compared with a high structure carbon black, low structure carbon black is more likely to reach high concentrations, but in

the dispersion process has therefore require a larger dispersion forces. Performance is influenced by the structure of carbon black dispersion extent, due to the high

structure carbon black has good dispersion properties, so its color intensity is naturally strong. When using powdered carbon black, there will be scattered and

headaches dust problem, therefore, can be used masterbatch or syrup. Prefabricated price than the mere use of carbon black pigment black to be high, but if taking into

account the cleaning process, high efficiency and technical advantages of low investment, carbon black formulations is its value.
Light stability
Light makes plastic aging, especially the sun's ultraviolet rays will accelerate the aging of plastics. In line with the use of organic UV absorbers and antioxidants

can extend the life. However, pigment black is still considered the best UV stabilizers.
Pigment Black as ultraviolet light absorbers