specializes in research & development and production of Carbon Black

Preparation and Properties of Pigment Carbon Black for Coatings and Paints

As an important filler, Pigment Carbon Black is widely used in the field of coatings.

Pigment Carbon black samples with different morphologies and structures were prepared through different preparation methods, such as pyrolysis, carbonization and physical grinding, and their morphologies were examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). and structure characterization.

Pigment Carbon Black from China Beilum Carbon

At the same time, the specific surface area, pore structure and dispersion of pigment carbon black were tested. The results show that carbon black samples obtained by different preparation methods have different morphology and structural characteristics, and their specific surface areas and pore structures are also different.

In addition, research also explored the properties of carbon black in coatings, such as blackening effect, weather resistance and abrasion resistance. Research results show that appropriate addition of carbon black can effectively improve the color stability, weather resistance and wear resistance of coatings. However, excessive addition of carbon black may lead to a decrease in the rheological properties of the coating and the gloss of the coating film. Therefore, in practical applications, the appropriate amount of carbon black addition needs to be selected according to specific requirements.

Carbon black is a black powdery substance obtained by high-temperature pyrolysis or physical grinding of carbonaceous materials such as bituminous coal, petroleum asphalt or natural gas. Due to its high specific surface area and pore structure, pigment carbon black is widely used as a filler in coatings to increase color depth and improve the weathering and abrasion resistance of coatings.

Preparation methods of Pigment carbon black:  There are various methods for preparing carbon black, the common ones include pyrolysis, carbonization and physical grinding. The pyrolysis method is to pyrolyze carbonaceous raw materials at high temperatures to produce carbon black. The carbonization method is to heat carbonaceous raw materials and catalysts together to cause a carbonization reaction to generate carbon black. The physical grinding method is to grind carbonaceous materials through mechanical grinding to obtain carbon black.

Morphology and Structural Characteristics of Carbon Black samples obtained by different preparation methods have different morphology and structural characteristics.

Through SEM and TEM observation, it can be found that the carbon black particles obtained by pyrolysis method have a relatively uniform spherical or spherical structure, the shape of carbon black particles obtained by carbonization method is more irregular, and the shape of carbon black particles obtained by physical grinding method is more diverse. . In addition, the specific surface area and pore structure of carbon black are also affected by the preparation method.

Performance of carbon black in coatings:

Pigment Carbon black is used as a filler in coatings, and its addition amount and dispersion have an important impact on the performance of coatings. Adding an appropriate amount of carbon black can increase the color depth and blackening effect of the paint, and improve its weather resistance and wear resistance. However, excessive addition of carbon black may lead to a decrease in the rheological properties of the coating and affect the gloss of the coating film.

Conclusion This study investigated the preparation methods and properties of pigment carbon black in coatings.

Carbon black samples obtained by different preparation methods have different morphologies and structural characteristics, and their specific surface areas and pore structures are also different. The addition amount and dispersion of carbon black have an important impact on the performance of the coating. Adding an appropriate amount of carbon black can effectively improve the color stability, weather resistance and abrasion resistance of the coating, but excessive addition will reduce the rheological properties of the coating and the gloss of the coating film. Therefore, in practical applications, the appropriate amount of carbon black addition should be selected according to specific requirements.

Beilum carbon black pigment for inks,Coatings, Plastics

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