BRIDGING TOUGHENING OF EPOXY RESINS BY DISPERSED THERMOPLASTICS

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 continuousbridg...

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Bibliographic Details
Published in:Acta mechanica Sinica 1989-11, Vol.5 (4), p.332-342
Main Authors: Wei, Yang, Zengli, Fu, Yishi, Sun
Format: Article
Language:English
Subjects:
bridging
crack
pinning
toughening
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Summary: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.
ISSN:0567-7718
1614-3116
DOI:10.1007/BF02488006