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Deformation and fracture of glass bead/ CTBN‐rubber/epoxy composites
Author(s) -
Zhang H.,
Berglund L. A.
Publication year - 1993
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760330208
Subject(s) - materials science , composite material , epoxy , natural rubber , fracture toughness , fracture (geology) , composite number , modulus , toughness , deformation (meteorology)
Carboxyl‐terminated butadiene‐acrylonitrile‐rubber decreases modulus and yield stress of the studied epoxy but increases fracture toughness. The addition of glass bead compensates for the loss in modulus but has little effect on yield stress. However, it significantly contributes to the fracture toughness by providing additional mechanisms for toughening of both the unmodified and rubber‐modified epoxy. For the toughened epoxies studied, fracture surfaces gave only limited information on fracture mechanisms since significant energy absorption also occurs in the material below the fracture surface. Suggestions for suitable material compositions for fiber composite matrices are given.