Conductive carbon black has stronger coloring ability.
1、 The concept and preparation of conductive carbon black and ordinary carbon black
Carbon black is a black fine powder with high specific surface area, high solubility, high blackness, and high coloring ability. It is an important raw material for manufacturing products such as rubber, plastics, inks, and coatings. Conductive carbon black is a type of carbon black with electrical conductivity, which increases the conductivity of materials such as plastics and rubber. In contrast, ordinary carbon black does not have electrical conductivity.
The methods for preparing carbon black are generally divided into dry carbon black method, pyrolysis carbon method, and by-product method. The method of preparing conductive carbon black usually involves covering the surface of ordinary carbon black with a layer of conductive agent to give it conductivity.
2、 Different characteristics of conductive carbon black and ordinary carbon black
Conductive carbon black and ordinary carbon black have differences in color, size, shape, and surface properties. The color of conductive carbon black tends to be gray black or bluish gray black, while ordinary carbon black usually appears dark black. The particle size of conductive carbon black is larger, generally around 200-500 nanometers, while the particle size of ordinary carbon black is less than 200 nanometers. The surface of spherical particles of conductive carbon black may be covered with metal oxides, causing surface protrusions and increasing its conductivity.
Compared to ordinary carbon black, conductive carbon black can cause lighter or darker colors in certain situations. Due to the gray color of conductive carbon black, it is commonly used to manufacture dark colored plastic and rubber products. In contrast, ordinary carbon black has a darker color and is usually used to make black, making it relatively more vivid in color.
3、 Difference in coloring ability between conductive carbon black and ordinary carbon black
In terms of coloring, conductive carbon black has stronger coloring ability due to its wide particle size distribution and high specific surface area. In addition, the coating with conductive substances on its surface also increases its coloring power. Ordinary carbon black also exhibits excellent coloring performance, but it falls short compared to conductive carbon black.
There are differences between conductive carbon black and ordinary carbon black in terms of color, size, shape, and surface properties, with conductive carbon black having stronger coloring ability than ordinary carbon black. Objectively speaking, this is mainly due to the conductive material coating on the surface of conductive carbon black.