Application of High-value Pyrolysis Carbon Black in Inner Liner Compound and Bead Filler Compound of Radial Tire
The application of high-value pyrolysis carbon black in the inner liner compound and bead filler compound of radial tires was studied.The results showed that the ash content and total sulfur content of high-value pyrolysis carbon black were higher than those of carbon black N330 and N660,the compression DBP absorption value and CTAB absorption specific surface area were basically equivalent to those of carbon black N660,and the nitrogen absorption specific surface area was basically comparable with those of carbon black N330.In the formulation of inner liner compound,replacing carbon black N660 with high-value pyrolysis carbon black in equal amount had no adverse effects on the vulcanization characteristics,physical properties,airtightness and dynamic mechanical properties of the compound.In the formula of bead filler compound,using high-value pyrolysis carbon black to replace incrementally carbon black N330,for example,15 phr value pyrolysis carbon black was used to replace 10 phr carbon black N330,the various properties of the compound met the usage requirements.
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