کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
820544 1469546 2013 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced mechanical properties of silanized silica nanoparticle attached graphene oxide/epoxy composites
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Enhanced mechanical properties of silanized silica nanoparticle attached graphene oxide/epoxy composites
چکیده انگلیسی

The toughening effects of 3-aminopropyltriethoxysilane (APTES) functionalized silica nanoparticles attached graphene oxide (ATGO) in epoxy were investigated. Fourier transform infrared and X-ray photoelectron spectroscopy analysis confirmed chemical functionalization and partial reduction of GO during the functionalization. The nanostructures of GO and ATGO were observed by transmission electron microscopy. The tensile strength and modulus of 1 wt.% ATGO-filled epoxy composites at cryogenic temperature (CT) were 29.2% and 22.0% higher than those of pure epoxy. Interestingly, both the tensile strength and modulus of all the composites at CT were significantly higher than those at room temperature (RT). In contrast, impact strength of the composites at RT was higher than that at CT due to the restricted molecular mobility of epoxy. The fracture toughness (KIC) obtained from the single edge notched bending (SENB) test increased sharply with an increase in ATGO loading in the epoxy up to 1 wt.%. The fracture surfaces of the composites analyzed through field emission scanning electron microscopy (FE-SEM) shown the rough surfaces confirming the enhanced impact and tensile properties of the ATGO filled composites.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 79, 18 April 2013, Pages 115–125
نویسندگان
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