Research and Application of Materials Science

Basic Properties of Pyrolysis carbon black of Waste Tyres and Application of Pyrolysis carbon black in Transition Layer Rubber of All Steel Radial Tire

LIUQi, LiHui, LiJian


The main chemical composition of pyrolysis carbon black of waste tires is C, O, Cu, Zn and so on. The content of ash and fine powder in pyrolysis carbon black is high, and the 300% elongation stress is high. The difference between pyrolysis carbon black and furnace black N326, which is commonly used in rubber, is obvious compared with chemical property. The pyrolysis carbon black was used to replace furnace black N326 in the transition layer of all steel load Radial tire rubber through experimental study. It was found that the compression heat generation and dynamic loss (TanĪ“) of the blend rubber before and after aging were obviously reduced, the elongation at break and resilience increased, while the tensile stress and tear strength decreased by 100% and 300% , but the hardness and tensile strength changed little before and after aging. According to the latest raw material price calculation, 15 used tire pyrolysis carbon black instead of furnace carbon black N326 used in all steel Radial tire transition layer rubber application, excluding labor costs, electricity and equipment depreciation, a ton of blended rubber saves about $22.86 in production costs.


waste tyre; pyrolysis carbon black; all steel radial truck tire; the transition layer formula; mixing rubber

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