The Research of Acoustic Emission with Different Crystalline Morphology of Polypropylene

Abstract

Abstract: The Acoustic Emission within the process of instrumented impact test was researched with polypropylene materials filled with nucleating agent(mass fraction, 0-2.0%) by the MISTRAS 2001 AE SYSTEM. It was shown that at the 0.4%(mass fraction) content of nucleating agent, the notched impact strength showed a maximum value, at the same time, the AEcounts also reached the highest level. With the increase of nucleating agent, AEcounts of crack initiating stage in the process of impact fracture tend toward the increase, but the AEcounts of crack growth stage reaches a maximum value. It has the same transformation tendency with the characteristic parameter of fracture surface.

Key words: Polypropylene, Instrumented impact test, Acoustic emission

CLC Number:

TQ325.1

TrendMD:

XU Tao, LEI Hua, YU Jie, XIE Chang-Sheng . The Research of Acoustic Emission with Different Crystalline Morphology of Polypropylene[J]. Chem. J. Chinese Universities, 2001, 22(10): 1757.

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The Research of Acoustic Emission with Different Crystalline Morphology of Polypropylene

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