Resumo

HERNANDEZ, M et al. Thermal and mechanical characterization of PP/NBR blends. Rev. Fac. Ing. UCV [online]. 2006, vol.21, n.1, pp.5-12. ISSN 0798-4065.

Thermal and mechanical behavior of i-PP and NBR blends were studied, with special reference to the effect of dynamic vulcanization and compatibilization. DSC and TGA characterization techniques were employed. Tensile properties and impact strength were also evaluated. Results indicate that NBR content decreased PP’s crystallinity degree, increased thermal stability and slightly increased impact strength. Dynamic vulcanization did not show significant changes on mechanical or thermal properties. The addition of a compatibilizer seemed to lower interfacial tension of the dynamically vulcanized blend, although this decrease was not enough to increase tensile properties.

Palavras-chave : PP; NBR; thermal properties; mechanical properties; dynamic vulcanization; compatibilizer.