Antioxidant, antidegradant depletion in tire compounds

摘要

IV. Factors affecting antidegradants availability and consumptionProtection of rubber goods by antidegradants starts from the moment the antidegradant is mixed into the uncured rubber compound and finishes when the last trace of active antidegradant has disappeared from the used compound.Protection typically is provided by either the formation of a physical barrier, preventing the entrance of oxygen and ozone (e.g. use of waxes) or chemical reactions, preventing degradation of the rubber (e.g. use of phenols and amines).