کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
821017 906737 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of the aspect ratio of carbon nanotubes on their effective reinforcement modulus in an epoxy matrix
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
The effect of the aspect ratio of carbon nanotubes on their effective reinforcement modulus in an epoxy matrix
چکیده انگلیسی

The potentiality of carbon nanotubes as reinforcement material is not only due to their exceptional high modulus, but also to their high aspect ratio. Indeed, the nanotubes contribution to the mechanical reinforcement in a polymer is strongly dependent on their distribution within the hosting matrix. In fact, the clustering of carbon nanotubes does limit the theoretical enhancement of the composite mechanical properties by a reduction of their effective aspect ratio.In this work, the reinforcement efficiency of carbon nanotubes having different aspect ratios has been experimentally investigated at low filler contents in an epoxy system. From a theoretical point of view, the classical theory (Cox, 1952 [25]) concerning the mechanical efficiency of a matrix embedding finite length fibers has been modified by introducing the tube-to-tube Random Contact Model (Philipse, 1996 [33]) which explicitly accounts for the progressive reduction of the tubes effective aspect ratio as the filler content increases. The validity of the proposed model was assessed by a comparison with available literature data, providing a good agreement.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 71, Issue 8, 31 May 2011, Pages 1117–1123
نویسندگان
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