uae high purity 6ppd 4020 rubber antioxidant
uae high purity 6ppd 4020 rubber antioxidant
uae high purity 6ppd 4020 rubber antioxidant
uae high purity 6ppd 4020 rubber antioxidant
uae high purity 6ppd 4020 rubber antioxidant
  • Does 6PPD ozonation pose environmental risks?
  • 6PPD, a tire rubber antioxidant, poses substantial ecological risks because it can form a highly toxic quinone transformation product (TP), 6PPD-quinone (6PPDQ), during exposure to gas-phase ozone. Important data gaps exist regarding the structures, reaction mechanisms, and environmental occurrence of TPs from 6PPD ozonation.
  • Are rubber antioxidants a rational design?
  • The development of medical antioxidants also inspires the rational design of rubber antioxidants. Recently, Sun, et al. synthesized a novel antioxidant (APPT) containing aromatic amine, thiourea and allyl groups by the reaction between N-phenyl-p-phenylenediamine and allyl isothiocyanate (Fig. 3 b) .
  • What are the future trends of rubber antioxidants?
  • The perspectives on the future trends of rubber antioxidants have been presented. Elastomers, especially diene-rubbers containing unsaturated double carbon bonds in the main chains, are vulnerable to thermal/oxygen aging, which would make the elastomers less elastic and result in earlier failure of the elastomer products.
  • Is 6PPD a dangerous hazard?
  • Various aquatic species have shown severe susceptibility to 6PPD-Q 3, 4. 6PPD has been detected in humans 5 and causes severe developmental, physical deformative and behavioral health effects 6. Crumb rubber derived from EOL tires is used in asphalt and recreational fields, with 6PPD shown to leach from these spaces 7.