کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7215432 | 1469508 | 2015 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improved dielectric properties of nanocomposites based on polyvinylidene fluoride and ionic liquid-functionalized graphene
ترجمه فارسی عنوان
بهبود خواص دی الکتریک نانو کامپوزیت ها بر اساس فلوئورید پلی وینیلیدین و گرافن فعال شده مایع یون
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
چکیده انگلیسی
Polyvinylidene fluoride (PVDF) based nanocomposites with graphene and ionic liquid-modified graphene (denoted as GIL) as fillers, were fabricated using solution-cast method and their dielectric properties were carefully characterized. The Raman spectroscopy showed that the ionic liquid and the graphene exhibit the physical cation-Ï interaction. Ionic liquid can improve the dispersibility of graphene in PVDF matrix by morphology characterization. The percolation thresholds were determined to be 1.86 vol % for PVDF/GIL composites and 0.67 vol % for PVDF/Graphene composites, respectively. Compared with PVDF/Graphene composites, the PVDF/GIL composites exhibited higher dielectric permittivity that originates from the polar β crystals of PVDF and a remarkable Maxwell-Wagner-Sillars (MWS) effect between PVDF and GIL, and the nonconducting organic segments of the ionic liquid can support the low loss tangent and low conductivity in the PVDF/GIL composites.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 117, 29 September 2015, Pages 282-288
Journal: Composites Science and Technology - Volume 117, 29 September 2015, Pages 282-288
نویسندگان
Pei Xu, Haoguan Gui, Xiaoxi Wang, Yadong Hu, Yunsheng Ding,