摘要
The particulate toughening behaviour of epoxy resins modified by ductile thermoplastics is 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 continuous bridging 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 result for modified epoxy systems such as AG80/DDS/PSF and E51/DDS/PSF. These models also provide quantitative descriptions for the crack pinning phenomenon previously observed by Fu and Sun in AG80/DDS/PSF.
The particulate toughening behaviour of epoxy resins modified by ductile thermoplastics is 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 continuous bridging 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 result for modified epoxy systems such as AG80/DDS/PSF and E51/DDS/PSF. These models also provide quantitative descriptions for the crack pinning phenomenon previously observed by Fu and Sun in AG80/DDS/PSF.
基金
The project sponsored by the National Natural Science Foundation of China under the Grant 5870134.
