کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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819246 | 906547 | 2010 | 6 صفحه PDF | دانلود رایگان |
We investigated the effects of clay silane treatment on the fracture behaviors of clay/epoxy nanocomposites by comparing the compliance, critical fracture load, and fracture toughness of silane-treated samples with those of untreated samples. The fracture toughnesses of untreated and silane-treated clay/epoxy nanocomposites were 8.52 J/m2 and 15.55 J/m2, respectively, corresponding to an 82% increase in fracture toughness after clay silane treatment. Tensile tests were performed at −30 °C, 25 °C, 40 °C, and 70 °C. Tensile strength and elastic modulus were higher at −30 °C than at 25 °C for both samples. However, the tensile properties decreased as temperature increased for both samples. In particular, at 70 °C, the tensile properties were less than 10% of the original value at room temperature, independent of surface treatment. The fracture and tensile properties of silane-treated clay/epoxy nanocomposites increased due to good dispersion of the clay in epoxy and improvement in interfacial adhesive strength between epoxy and clay layers.
Journal: Composites Part B: Engineering - Volume 41, Issue 8, December 2010, Pages 602–607