large stock rubber antioxidant 6ppd for tires in iran
large stock rubber antioxidant 6ppd for tires in iran
large stock rubber antioxidant 6ppd for tires in iran
large stock rubber antioxidant 6ppd for tires in iran
large stock rubber antioxidant 6ppd for tires in iran
  • Is 6PPD a toxic oxidant?
  • To enhance tire durability, the antioxidant N- (1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD) is used in rubber, but it converts into the toxic 6PPD quinone (6PPD-Q) when exposed to oxidants like ozone (O 3), causing ecological concerns.
  • Are EOL tires toxic?
  • Crumb rubber derived from EOL tires is used in asphalt and recreational fields, with 6PPD shown to leach from these spaces 7. The ubiquity and toxic effects of 6PPD call for the current strategies for managing and using EOL tires to be reimagined with environmental and human safety in mind.
  • Can 6PPD be removed from end-of-life tires?
  • We introduce a decontamination strategy that removes 6PPD from end-of-life tires before it enters the broader ecosystem. We demonstrate the catalytic upgrade of 6PPD to safe chemicals and the valorization of crumb rubber to aromatics and carbon black using microwave-assisted pyrolysis. You have full access to this article via your institution.
  • What are P-phenylenediamines in tires?
  • One category of these chemicals is p-phenylenediamines (PPDs), which serve as antioxidants and are added to tire rubber to prevent cracking, and thermal oxidative degradation, and to prolong the tire lifespan (Hough et al., 2020).