Fracture Behavior of Polypropylene Modified with Metallocene Catalyzed Polyolefin

L. FASCE; P. FRONTINI; S. -C. WONG; Y.-W. MAI

Plastics Failure Analysis and Prevention

Plastics Design Library

Lugar: Norwich, N Y; Año: 2001; p. 143 - 148

Toughening of brittle homopolymers continues to generate great scientific and commercial interest. Recent developments of metallocene catalyzed thermoplastic elastomers have created new frontiers for research in characterizing the toughening behavior of novel polymer blends containing physically miscible phases. In this paper, we present a variety of fracture assessment schemes for polypropylene homopolymers containing an elastomeric phase (ENGAGE POes 8100®). Puncture test at 3.5 m/s was conducted to assess the failure behavior under biaxial loadings. The J-integral fracture toughness was also measured to describe the resistance against crack initiation at a quasi-static loading rate. Fracture and deformation mechanisms were examined using petrographic thin sectioning technique1 and tensile dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. under biaxial loadings. The J-integral fracture toughness was also measured to describe the resistance against crack initiation at a quasi-static loading rate. Fracture and deformation mechanisms were examined using petrographic thin sectioning technique1 and tensile dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. under biaxial loadings. The J-integral fracture toughness was also measured to describe the resistance against crack initiation at a quasi-static loading rate. Fracture and deformation mechanisms were examined using petrographic thin sectioning technique1 and tensile dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. under biaxial loadings. The J-integral fracture toughness was also measured to describe the resistance against crack initiation at a quasi-static loading rate. Fracture and deformation mechanisms were examined using petrographic thin sectioning technique1 and tensile dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. under biaxial loadings. The J-integral fracture toughness was also measured to describe the resistance against crack initiation at a quasi-static loading rate. Fracture and deformation mechanisms were examined using petrographic thin sectioning technique1 and tensile dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. ®). Puncture test at 3.5 m/s was conducted to assess the failure behavior under biaxial loadings. The J-integral fracture toughness was also measured to describe the resistance against crack initiation at a quasi-static loading rate. Fracture and deformation mechanisms were examined using petrographic thin sectioning technique1 and tensile dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. dilatometry,2,3 respectively. 1 and tensile dilatometry,2,3 respectively.2,3 respectively.