Abstract

ABSTRACTThe objective of this research was to investigate process limits and properties of porous tapes obtained by solid-phase die-drawing of talc-filled polypropylene to a thickness of 1 mm, which is low for this process. Two different composites with different talc particle size distributions were drawn under similar conditions and the development of porosity with increasing linear draw ratio was more gradual in the drawn product with smaller mean particle size, leading to greater mechanical strength even at a final porosity level matching that in the other drawn material. The morphology of the drawn products was examined to explain these trends.

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