What is carbon black
Carbon black, also known as carbon black, is an amorphous carbon, light, loose, and extremely fine black powder. It is the product of incomplete combustion or thermal decomposition of carbon containing substances such as coal, natural gas, heavy oil, and fuel oil under insufficient air conditions. Its surface area is very large, ranging from 10-3000m2/g. The structure of carbon black is expressed by the degree to which carbon black particles aggregate into chains or grapes.
The term "carbon black" is actually a generic term for carbon black products that include these various uses. Each carbon black has its specific physical and chemical properties, which are closely related to the raw materials used, the combustion and cracking process, production methods, and operating conditions.
Industrial carbon black is mainly composed of carbon elements. Its microcrystals have a quasi graphite structure and are concentric oriented. Its "particles" are composed of nearly spherical or other irregularly shaped polymer melts.
A carbon black composed of agglomerates composed of the size, morphology, and number of particles in each agglomerate is called a high structure carbon black. The commonly used oil absorption value represents the structure. The higher the oil absorption value, the higher the structure of carbon black, which is easy to form spatial network channels and is not easy to damage.
Carbon black has excellent rubber reinforcement, coloring, conductive or antistatic properties, and UV absorption functions. It is listed as one of the 25 basic chemical products and fine chemical products in the international chemical industry. Carbon black industry is of great significance for the tire industry, dyeing and chemical industry, and improving the quality of civil life products.
The main uses of carbon black include coating inks, paint pastes, rubber plastic, plastic foam, silica gel, ceramics, leather, and cement building materials products.
The history of carbon black is very long. According to records, China is one of the earliest countries in the world that produced carbon black. In ancient times, people burned animal and vegetable oils, pine branches, and collected the black ash condensed from fire smoke to make ink and black pigments. The oracle bone inscriptions of the Yin and Shang dynasties 3000 years ago were recorded in ink using "soot", and ancient bamboo slips in China were also written in ink.