Are the ingredients in the rubber formula causing the rubber to age?
Some materials, such as rosin, the molecule does not exist in the stable structure (double bond), under certain conditions will produce free radicals, free radicals are induced by rubber molecular chain scission. Different working conditions, formulation of the same kind of material has good or bad effects are also very different, not can be generalized.
Rubber aging, in essence, is the rubber molecules in thermal oxygen, ozone, ultraviolet or fatigue conditions such as broken chain. Therefore, easily lead to broken chain material is easy to lead to aging
The same is reinforced filler, white carbon black because of the shielding effect of ultraviolet light is much smaller than carbon black, from the phenomenon of view, it will be found that white carbon easily lead to rubber aging;
