Abstract
The deformation curves of rubber vulcanizates pictured by repeating hysteresis loops were analyzed by our proposed equation of rubber elasticity and Mooney-Rivlin one. In these parameters obtained by plots of both equation vkT and c1 were observed to be increased and b and c2 decreased, when a number of deformation are increased.
In the case of the measuring of the deformation curves, when the samples are permitted to stand for a constant time at room temperature, the values of these parameters approached gradually to that of original non-deformation sample.
From these results, it can be considered that b and c2 are parameters based on a non-elastic effect, or pseudo-crosslinking.
