Summary of the most common basic knowledge differences between carbon black and pigment carbon black and silica manufacturers' products
2020-06-23
Summary of the most common differences between carbon black and pigment carbon black and the products of silica manufacturers
What is Carbon Black?
Carbon black (also known as carbon black) is a quasi-graphite structure substance of colloidal particles approximately spherical in shape formed by incomplete combustion or thermal cracking of hydrocarbon compounds (mainly petroleum derivatives). It exists in the form of aggregates and appears to be pure black powder or granules. The particle size, structure, and surface activity of the product vary greatly depending on the raw materials and production process. Carbon black is insoluble in water and has acidic and alkaline properties. It produces carbon dioxide after combustion. The main component of carbon black is carbon, and it also contains trace amounts of hydrogen, oxygen, sulfur, ash, tar, and water.
What is Pigment Carbon Black?
Carbon black used as a pigment in coatings, inks, and plastics is called pigment carbon black. Pigment carbon black is used in coatings, inks, and plastics, and also has the functions of conducting electricity, preventing static electricity, shielding ultraviolet rays, and preventing resin aging. Therefore, people distinguish it from carbon black used for rubber and broadly refer to pigment carbon black as specialty carbon black.
According to statistics and forecasts from the American NOTCH Consulting Group: In 2007, the world's carbon black production capacity was 10.16 million tons, and it is estimated that the world's carbon black production capacity will increase to more than 12 million tons in 2012. Among them, rubber carbon black used in the tire and rubber industry accounts for more than 90% of the total output, and only about 10% of carbon black is used as a pigment.
Features of Pigment Carbon Black
1. Compared with other pigments, carbon black has better coloring power and hiding power.
2. Compared with other pigments, carbon black has excellent heat resistance, chemical resistance, and light resistance.
3. Since the particle size of carbon black is only a few nanometers to dozens of nanometers, the porosity is as high as 90%, and it is an inorganic material, it is difficult for ordinary carbon black to be stably dispersed into organic resin systems. Pigment carbon black produced through strict control and special modification processes can be well dispersed in coatings, inks, and plastic systems.
4. Compared with rubber carbon black, pigment carbon black has more and more specific requirements for quality indicators such as blackness, coloring power, surface activity, electrical conductivity, ash content, toluene transmittance, dispersibility, and fluidity.
Related news
Contact us
Address: No. 577, Luxing Road, Qingzhou City, Weifang City, Shandong Province