Determination of fracture toughness of propylene polymers at different operating temperatures
作者： A. Salazar , P.M. Frontini , J. Rodríguez
DOI: 10.1016/J.ENGFRACMECH.2014.04.023
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摘要: Abstract The influence of the temperature on fracture parameters three types polypropylenes under static loading conditions has been analyzed. Single-phase polypropylene homopolymer and random ethylene–propylene copolymer were tested slightly above their glass transition temperatures (within ductile-to-brittle region), well below them; heterophasic block copolymers range from propylene matrix to elastomer phase. Attending mechanical response, suitable Fracture Mechanics approaches used. toughness increased with for single-phase polymers but not sensitive elastomeric phase despite variation properties.
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