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Rubbery and rigid particle toughening of epoxy resins
Author(s) -
Geisler B.,
Kelley F. N.
Publication year - 1994
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1994.070540204
Subject(s) - materials science , composite material , epoxy , particle (ecology) , toughening , toughness , oceanography , geology
Four types of materials were evaluated in this study: neat epoxy resins of differing initial molecular mass, and their rubbery particle‐filled, rigid particle‐filled, and hybrid particle‐filled counterparts. Both rubbery and rigid particle‐filled epoxies exhibited fracture energies, G Ic , greater than the neat resins. Cured resins prepared with an optimum loading of both rubbery and rigid particles gave G Ic values greater than those from rubbery or rigid particles alone (approximately sixteen‐fold increase over the neat resins). Rigid particle composites were toughened by means of a crack front impedance mechanism. In hybrid particle composites, rigid particles enhanced localized plastic deformation ahead of the crack front. © 1994 John Wiley & Sons, Inc.