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International Journal of Nanoscience and Nanotechnology (IJNN)، جلد ۱۱، شماره ۳، صفحات ۱۹۳-۱۹۹
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عنوان انگلیسی An Experimental Study on Toughening Mechanisms of Fillers in Epoxy/ Silica Nanocomposites
چکیده انگلیسی مقاله In this paper, a systematic study on the effects of particle size and hybrid of two different size of silica nanoparticles on the toughening mechanisms of bisphenol-A epoxy was conducted. Nanosilica particles with mean diameter of 17 nm and 65 nm were blended into epoxy system. Probable synergy effects of these two nanoparticles on Young’s modulus and yield strength have been investigated. Results showed that the addition of the silica nanoparticles and also increasing content of nanoparticles improved Young’s modulus in all composites. In addition, the particle size did not show a considerable effect on the Young’s modulus and the use of both types of particles in a composite showed negligible synergy effect. On the other hands, results revealed that the addition of these nanoparticles did not change the yield stress of composites significantly. The fracture surfaces of composites were studied by Scanning electron microscopy. It was revealed that in all three series of nanocomposites, crack deflection, crack forking and debonding were the most important mechanisms.
کلیدواژه‌های انگلیسی مقاله Silica nanoparticles,Crack deflection,Debonding,Toughening
نویسندگان مقاله m شریعتی |
department of mechanics, engineering faculty, ferdowsi university of mashhad, mashhad, i. r. iran
سازمان اصلی تایید شده: دانشگاه فردوسی (Ferdowsi university)

g a فرضی | a farzi
department of material and polymer engineering, faculty of engineering, hakim sabzevari university, sabzevar, i. r. iran.
سازمان اصلی تایید شده: دانشگاه حکیم سبزواری (Hakim sabzevari university)

a دادرسی |
department of mechanical engineering, shahrood university, shahrood, i. r. iran.
سازمان اصلی تایید شده: دانشگاه شاهرود (Shahrood university)

m امیری |
department of material and polymer engineering, faculty of engineering, hakim sabzevari university, sabzevar, i. r. iran.
سازمان اصلی تایید شده: دانشگاه حکیم سبزواری (Hakim sabzevari university)

r رشیدی میبدی | rashidi meybodi
department of mechanical engineering, payame noor university, tehran, i. r. iran. nano structured coatings institute of yazd payame noor university, yazd, i. r. iran
سازمان اصلی تایید شده: دانشگاه پیام نور تهران (Payame noor university)

نشانی اینترنتی http://www.ijnnonline.net/article_14573_207fb333383c344cddf989a2319db54c.pdf
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