Citation: . BRITTLE-DUCTILE TRANSITION OF POLYMERS AND ITS PERCOLATION MODEL*[J]. Chinese Journal of Polymer Science, ;2003, 21(2): 129-133. shu

BRITTLE-DUCTILE TRANSITION OF POLYMERS AND ITS PERCOLATION MODEL*

Received Date: 31 August 2002

The brittle-ductile transition (BDT) of particlc toughened polymers was extensively studied in terms ofmorphology, strain rate, and temperature. The calculation results showed that both the critical interparticle distance (IDc) andthe brittle-ductile transition temperature (TBD) of polymers were a function of strain rate. The IDc reduced nonlinearly withincreasing strain rate, whereas TBD increased considerably with increasing strain rate. The effects of temperature andplasticizer concentration on BDT were discussed using a percolation model.The results were in agreement with the experiments.
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