期刊
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
卷 39, 期 11, 页码 1137-1146出版社
WILEY
DOI: 10.1002/polb.1090
关键词
epoxy resin; intercalated nanocomposite; aluminosilicate clay; fracture behavior; filled composite
Intercalated nanocomposites of modified montmorillonite clays in a glassy epoxy were prepared by crosslinking with commercially available aliphatic diamine curing agents. These materials are shown to have improved Young's modulus but corresponding reductions in ultimate strength and strain to failure. The results were consistent with most particulate-filled systems. The macroscopic compressive behavior was unchanged, although the failure mechanisms in compression varied from the unmodified samples. The fracture toughness of these materials was investigated and improvements in toughness values of 100% over unmodified resin were demonstrated. The fracture-surface topology was examined using scanning electron and tapping-mode atomic force microscopies and shown to be related to the clay morphology of the system. (C) 2001 John Wiley & Sons, Inc.
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