of SBR-1/SBR-2 before and after thermal ageing is about the same
(Fig. 6). SBR-2 compound has originally 2,9% lower resilience value
compared with SBR-1 compound, after 74 h of ageing at 125 C, the
ratio is 3%.This means that SBR-2 absorbs more energy, and is less
elastic in character.