期刊
POLYMER
卷 43, 期 4, 页码 1555-1558出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0032-3861(01)00676-0
关键词
polymer toughening; brittle-ductile transition; cavitations
In this study, we established a correlation between cavitations volume and the brittle-ductile transition (BDT) for particle toughened thermoplastics. The brittle-ductile transition temperature (T-BD) was calculated as a function of T* and interparticle distance (ED), respectively, where T* was a parameter related to the volume of cavitations. The results showed that the smaller the cavitations volume, the higher the brittle-ductile transition temperature. The calculations correlated well with the experimental data. With respect to rubber particle, the rigid particle was too hard to be voided during deformation, thereby the TED of the blend was much higher than that of rubber particle toughened thermoplastic. This was a main reason that rubber particle could toughen thermoplastics effectively, whereas rigid particle could not. (C) 2001 Elsevier Science Ltd. All rights reserved.
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