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Mechanical properties of the flexible‐type epoxy/clay nanocomposites prepared by slurry method
Author(s) -
Harada Miyuki,
Ueda Ayumu,
Miyazaki Hironori,
Ochi Mitsukazu
Publication year - 2009
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.30396
Subject(s) - epoxy , materials science , slurry , nanocomposite , bisphenol a , composite material , clay minerals , montmorillonite , ultimate tensile strength , swelling , kaolinite , chemistry , mineralogy , metallurgy
The bisphenol‐F type flexible epoxy resin, having a good flexibility, was combined with an organo‐ and slurry‐clay. The clay dispersions in the obtained epoxy/clay systems are significantly different depending on the type of clay. Particularly, the epoxy/slurry‐clay system showed a high clay dispersibility into the epoxy matrix and was transparent in spite of the addition of 10 wt % clay. This result means that the swelling of the clay with formamide is effective for the expansion of the basal spacing of the clay. The slurry‐clay nanocomposite (clay content: 5 wt %) showed a 4 times higher fracture energy than the neat epoxy system in the tensile test, though the organo‐clay system (clay content: 5 wt %) was 1.5 times higher. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009