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The toughness of PP/EPDM blends was measured over a wide range of temperature (25-132°C) and composition (0-26 wt% EPDM). It was found that increasing temperature and decreasing interparticle distance have equivalent effects on the brittle-tough transition of toughening PP with EPDM, and the shift factor increases with increasing temperature. A correlation was also found between temperature and...
Irradiation can be applied to crosslink the dispersed elastomer phase to increase the modulus and decrease the voiding ability of the elastomer, which results in increasing critical brittle-tough transition elastomer content at constant temperature. The experimental results show that at 25°C the critical elastomer content of EPDM shifts to higher composition (shift of about 4 wt%) for PBT/EPDM blends...
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