کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1418883 986016 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multifunctional polypropylene composites produced by incorporation of exfoliated graphite nanoplatelets
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Multifunctional polypropylene composites produced by incorporation of exfoliated graphite nanoplatelets
چکیده انگلیسی

The potential of using exfoliated graphite nanoplatelets, xGnPTM, as a reinforcement that can produce multifunctional polymer composites was explored. xGnP–polypropylene (PP) composites fabricated by melt mixing using a twin-screw extruder followed by injection molding were investigated for their thermal, viscoelastic and barrier properties as a function of xGnP concentration and aspect ratio. These properties of the xGnP–PP composites were compared to the properties of composites made with PAN-based carbon fibers, VGCF, carbon black and nanoclay. Results indicate that when oriented properly, the xGnP will not only stiffen the composite but also reduce the coefficient of thermal expansion in two directions rather than in one as in the case of aligned fiber composites. Furthermore, the large aspect ratio of xGnP, even at low loadings, increases the oxygen barrier of PP at least as effectively as the commonly used nanoclays and finally, addition of xGnP significantly enhances the thermal conductivity of the polymer matrix.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 45, Issue 7, June 2007, Pages 1446–1452
نویسندگان
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