| 3 | BRIDGING TOUGHENING OF EPOXY RESINS BY DISPERSED THERMOPLASTICS显示文摘The particulate toughening behaviour of epoxy resins modified by ductile thermoplasticsis elucidated here by various bridging models. The experimental data for three different epoxy/PSF sys-tems are presented to illustrate the trend of the toughening characteristics. The conventional continuousbridging model is shown to have underestimated the effect of the particulate toughening. A joint appli-cation of the discrete bridging model and the multiple bridging model, however, shows promising resultfor modified epoxy systems such as AG80/DDS/PSF and E51/DDS/PSF. These models also providequantitative descriptions for the crack pinning phenomenon previously observed by Fu and Sun inAG80/DDS/PSF. | Yang Wei Fu Zengli Sun Yishi Tsinghua University, Beging 100084, China | 1989 | Acta Mechanica Sinica1989，5，4： | 0 |
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