Abstract
The strain at break vs. temperature diagrams were obtained for varous filler loaded vulcanized rubbers. Application of the empirical equations for the diagram, which have recently been proposed for those on the pure gum vulcanizates, to the experimental data was found successful. It was found that the temperture at which the extenstions ratio at break reaches its maximum value increased with the amount of fillers and that this characteristic temperature seemed to become a little higher and lower for those including the active and the inactive fillers, respectively, than that of the pure gum vulcanizate when they were compared at the same vulcanization level.
The extension of the blending law previously proposed appeared successul in application to the data on the maximum extension ratio at break for the filler-loaded vulcanizates in general.
