We know that tire carbon black is different from other industrial carbon blacks, but few friends know what the chemical composition of tire carbon black is, the chemical composition of waste tire refining carbon black, the chemical composition of tire dry distillation carbon black, the chemical composition of waste tire carbon black Chemical composition, the main chemical composition of tire carbon black, here we will introduce the main chemical composition of waste tire carbon black through experiments.
The particle size distribution of waste tire pyrolytic carbon black was measured by laser particle size analyzer, and the morphology of tire pyrolytic carbon black and industrial carbon black was analyzed by scanning electron microscope, X-ray diffraction method and X-ray photoelectron spectroscopy The chemical composition of tire carbon black can be tested by various methods such as surface chemical composition and surface carbon combination status.
The results detected by the above experimental methods show that the main chemical composition of tire pyrolytic carbon black is still C, but there will be a small amount of other elements. Tire carbon black is a mixture of various types of industrial carbon black, and the particle size distribution of tire pyrolytic carbon black is the superposition of the particle size distribution of various types of industrial carbon black added to tires. The surface morphology and composition of tire pyrolytic carbon black are close to industrial carbon black N660; the surface of tire pyrolytic carbon black has more organic matter and inorganic substances such as ZnO and ZnS attached to the surface, and the content of organic matter attached increases with the increase of pyrolysis temperature. Decrease, the ZnO content in the inorganic matter decreases, and the ZnS content increases. Tire pyrolytic carbon black at 500°C contains more ZnO and less ZnS than tire pyrolytic carbon black at 700°C.
From the above content, you can find that the chemical composition of tire carbon black is similar to that of industrial carbon black, so the use of tire carbon black overlaps with that of industrial carbon black. It's just that tire carbon black contains impurities that industrial carbon black does not necessarily contain, so corresponding measures must be taken when using tire carbon black.