Abstract
Influences of elastomer and filler incorporation on impact properties for polypropylene/elastomer/filler ternary composite were investigated. Silica particles with a diameter in the range from 0.1 to 3.3μm were used and polystyrene-block-poly(ethylene-butene)-block-polystyrene triblock copolymer(SEBS) was used as elastomer. In the case that SEBS volume fraction is below 0.12,the impact strength increased gradually with a decrease of the silica particle size. In the case that SEBS volume fraction is above 0.17,the addition of silica particles with a diameter in the range from 0.1 to 2.0μm improved the impact strength. However,the addition of them with mean size of 3.3μm never improved the impact strength. The influence of silica particle size on the impact strength was similar to that of CaCO₃,particles previously reported. It was found that the inorganic particle size strongly affects on the impact strength of composite independent on the kind of particles.
