Approaches to Oil and Temperature Resistant Thermoplastic Vulcanizates

Elastomer-thermoplastic blends have become technologically useful as substitutes for elastomers. They combine the entropy-elasticity of elastomers with the easy processability of thermolastics by exploiting a two-phase morphology in wich the rubber phase is the dispersed one. In cases when special properties such as temperature, oil and fuel resistance   have to be achieved the chemical nature of the blend constituents plays a major role.

The contribution focuse on new oil resistant TPE-V's based on polyamide (PA) and polyester as hard phase and NBR, XNBR, HNBR and XHNBR as rubber phase..

Factors of critical interest such as the nature of the thermoplastic constituent, the polarity of the rubber used, the blend composition and the the degree of crosslinking on the target properties such as oil resistance, tensile strength and elongation at break will be discussed.