carbon black Carbon black is a very common black pigment now. Carbon black can be used in many industries, such as rubber industry, ink and paint industry, masterbatch and other industries. But now many friends don't know what raw materials carbon black is made of. Here's to introduce what carbon black is made of and what raw materials are mainly used for making carbon black.
What are the raw materials for carbon black production?
The raw materials for carbon black production include petroleum products, pitch coal tar, n oil, natural gas and other raw materials with high carbon content.
Production principle of carbon black:
Carbon black can not be produced by pyrolysis of carbon black at atmospheric pressure or insufficient pressure.
What raw material is lampblack made of?
Carbon black produced by lamp smoke is burned on a flat burning iron plate with a diameter of 1.5 m. The combustion gas containing carbon black is collected by the exhaust hood with bricks inside, and then reaches the deposition device through the elbow (1 / 4 bending) and fire pipe, and finally the carbon black is collected.
What is the raw material of carbon black?
Gas process carbon black uses raw material hydrocarbon. When heated by raw material hydrocarbon, it is first gasified, and then carried to the burner by spontaneous combustion gas (for energy). Carbon black is generated in a large number of fan-shaped flames emitted by these bat shaped burners. Because each flame is small and burns in air, carbon black is formed.
What raw materials are used to make trough carbon black?
Tank process carbon black is based on natural gas as raw material. The process of tank black is similar to the gas combustion process of gas black production process. Natural gas combustion sends out many fan-shaped flames, and the product is similar to gas black. The difference is that flat water-cooled U-shaped tank is used as carbon black deposition tank.
What raw material is furnace carbon black made of?
Furnace carbon black is made of oil. The production process is carried out in a closed furnace under anoxic conditions. A large flame is used. Oil is used as raw material and combustible gas is added to make it reach the required temperature in the furnace.
Pigment carbon black is used for coloring in ink, paint, paint products and other products. But how to choose the pigment carbon black? Of course, this problem is not worth mentioning for technical engineers familiar with carbon black. However, it is necessary to popularize the basic knowledge of the application of pigment carbon black. Today, I'm going to talk about the purchase of pigment carbon black.
First of all, consider what you want to achieve with carbon black. Coloration, color matching, UV resistance or conductivity. Of course, it's very simple for those who have worked for years. However, those who do not know about carbon black need to communicate with experienced technical engineers of carbon black to jointly evaluate the material system and select suitable carbon black varieties.
Generally, the carbon black with high blackness and small particle size is selected for coloring, but it must be ensured that the carbon black is completely dispersed reasonably, otherwise it will not meet its own requirements. For color matching, it is necessary to choose the carbon black with blackness, large particle size and easy dispersion. If we want to use carbon black to achieve the purpose of UV resistance, we should choose carbon black with medium particle size and slightly higher structure, which has better anti ultraviolet performance.
Among them, the blackness of pigment carbon black is actually the reflectivity of carbon black. It is often expressed in terms of reflectance measurements. The higher the blackness, the lower the reflectivity. Generally, the higher the blackness, the smaller the particle size. The volatile of carbon black indicates the number of oxygen groups on the surface of carbon black, and reflects the physical properties, electrochemical properties and application properties of carbon black. The structure of carbon black and the degree of chain branch formed by the aggregation of carbon black particles indicate the level of void in carbon black, which is usually expressed by oil absorption value.
Also mentioned above is the dispersion of pigment carbon black, which is of great significance in the application process. The pigment must be dispersed in accordance with the optical performance of the particle state, carbon black is one of the most difficult to disperse among all pigments, so the dispersion of carbon black will directly affect the blackness, color phase and covering ability of carbon black, and directly affect the use effect of pigment carbon black.
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