STUDY ON MECHANICAL PROPERTIES OF DYNAMICALLY CURED PP/EPOXY RESIN BLENDS

摘要

In this paper, dynamical vulcanization process which usually used for preparation of thermoplastic elastomers was applied to PP/epoxy resin blend systems. Products of crosslinked epoxy resin particles finely dispersed in PP matrix were obtained, and were named as dynamically cured PP/epoxy resin blends. Maleic anhydride grafted PP (PP-MA) was used as a compatilizer. The influences of PP-MA content, epoxy content and reaction conditions on mechanical properties of dynamically cured PP/epoxy resin blends were investigated. Experimental results show that dynamically cured PP/epoxy resin blends have better mechanical properties than that of the PP/epoxy and PP/PP-MA/epoxy blends. By increasing epoxy resin content, flexural modulus increased significantly, while the elongation at break dramatically deceased. Impact strength was slightly affected by the presence of the epoxy resin.