کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
821416 906759 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dielectric properties of polystyrene/onion-like carbon composites in frequency range of 0.5–500 kHz
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Dielectric properties of polystyrene/onion-like carbon composites in frequency range of 0.5–500 kHz
چکیده انگلیسی

Composites of polystyrene and onion-like carbon (OLC), produced from detonation nanodiamonds (NDs), have been fabricated by forge-rolling method. Optical microscopy and optical absorption spectroscopy were used for control of dispersion of OLC in polymer matrix after repeating rolling cycles. The impedance measurements of composites with different filler loading indicated the percolation threshold at ∼20–25 wt.% OLC concentration. The permittivity of the polystyrene/OLC composites varies from 2 to 10 with changing the OLC loading from 5 to 35 wt.%. Fitting the experimental data with model based on the Maxwell–Garnett approximation lead to conclusion that the shear deformation applied under the composite preparing disintegrates OLC agglomerates to the size ∼40–50 nm equal to the medium size of OLC in dimethylformamide slurry.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 70, Issue 5, May 2010, Pages 719–724
نویسندگان
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