کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
609742 880629 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Direct fibre simulation of carbon nanofibres suspensions in a Newtonian fluid under simple shear
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Direct fibre simulation of carbon nanofibres suspensions in a Newtonian fluid under simple shear
چکیده انگلیسی

This work studies the effect of simple shear flows on the dispersion of carbon nanofibres (CNF) in a low viscosity Newtonian matrix. Analysis was performed by using a direct fibre simulation based on Particle Simulation Method (PSM) especially focusing on structure changes under shear flows. Suspensions of CNF/epoxy of different concentrations varying from 0.1 to 3.0 wt% were prepared by simple hand-mixing the as-received fibres with the epoxy resin. These suspensions were then subjected to different flow conditions (shear rates and strains) and their rheological behaviour was characterised. It is demonstrated that simulation can reproduce shear-thinning and structure developments induced by shear flow at different shear rates. Especially at low shear rates, flow induced helical bands were predicted by simulation, which was observed in experiments performed by other researchers and reported in the literature. From the results obtained it is concluded that the direct fibre simulator is a useful tool to design nano-scale fibre composites, allowing for optimisation of the critical parameters to determine the most adequate conditions leading to the required level of fibre dispersion.

The current work studies the effect of simple shear flows on the dispersion of carbon nanofibres in a low viscosity Newtonian matrix by a direct fibre simulation and experiments.Figure optionsDownload high-quality image (36 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 347, Issue 2, 15 July 2010, Pages 183–191
نویسندگان
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