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Rubber‐modified epoxy resins containing high functionality acrylic elastomers
Author(s) -
Ochi M.,
Bell J. P.
Publication year - 1984
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.1984.070290431
Subject(s) - epoxy , materials science , copolymer , composite material , toughness , natural rubber , elastomer , ultimate tensile strength , izod impact strength test , scanning electron microscope , polymer
The effect of the functionality of n ‐butylacrylate/acrylic acid copolymers upon the impact resistance of epoxy resins modified with these rubbery copolymers as a second phase was investigated using a high speed tensile test and scanning electron microscopy. It was found that an optimum functionality of copolymer existed for maximum impact resistance. This optimum value was the result of the competition between the amount of rubber–matrix reaction, an increases in which tended to increase toughness, and solubility of the rubber in the epoxy matrix, which eventually decreased toughness.