English  |  正體中文  |  简体中文  |  Items with full text/Total items : 90429/105609 (86%)
Visitors : 10573353      Online Users : 355
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version


    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/108186


    Title: Synergistic Effects of Micro-/Nano-Fillers on Conductive and Electromagnetic Shielding Properties of Polypropylene Nanocomposites
    Authors: 李婷婷;Ting-Ting,Li;陳安邦;An-Pang,Chen;黃柏文;Po-Wen,Hwang;潘毅鈞;Yi-Jun,Pan;邢文灝;Wen-Hao,Hsing;樓靜文;Ching-Wen,Lou;林佳弘;Jia-Horng,Lin
    Contributors: 時尚設計學系
    Date: 2017-01
    Issue Date: 2017-10-30 10:43:16 (UTC+8)
    Abstract: This study presents the synergistic effects of graphene nanosheets (GNSs) and carbon fibers (CFs) additions on the electrical and electromagnetic shielding properties of GNS/CF/polypropylene (PP) composites. These composites were fabricated by the melt blending of different ratios of GNSs and CFs (20:0, 15:5, 10:10, 5:15 and 0:20 wt/wt%) into a PP polymer matrix using a Brabender mixer. Besides, the chemical and crystalline structures and the thermal stability of the resultant GNS/CF/PP composites were characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD) and thermogravimetric analysis (TGA). FT-IR and XRD showed that with the addition of GNSs content, transmittances at 1373.4 cm−1 and 1454.4 cm−1 became smaller and the characteristic peak at 26.82° became stronger. TGA showed that the GNS/CF/PP composite can be used at high temperature below 456°C. Blending 10 wt% CFs and 10 wt% GNSs into the PP polymer resulted in excellent conductivity (0.397 S/cm), which indicated the occurrence of the critical percolation threshold phenomenon, and also reached the maximum electromagnetic shielding effectiveness (EMSE) of 20 dB at 1.28–2.00 GHz. Laminated with five layers of composites, its EMSE achieved 25–38 dB at 0.3–3.0 GHz, corresponding to blocking of 94.38–98.74% electromagnetic waves.
    This study presents the synergistic effects of graphene nanosheets (GNSs) and carbon fibers (CFs) additions on the electrical and electromagnetic shielding properties of GNS/CF/polypropylene (PP) composites. These composites were fabricated by the melt blending of different ratios of GNSs and CFs (20:0, 15:5, 10:10, 5:15 and 0:20 wt/wt%) into a PP polymer matrix using a Brabender mixer. Besides, the chemical and crystalline structures and the thermal stability of the resultant GNS/CF/PP composites were characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD) and thermogravimetric analysis (TGA). FT-IR and XRD showed that with the addition of GNSs content, transmittances at 1373.4 cm−1 and 1454.4 cm−1 became smaller and the characteristic peak at 26.82° became stronger. TGA showed that the GNS/CF/PP composite can be used at high temperature below 456°C. Blending 10 wt% CFs and 10 wt% GNSs into the PP polymer resulted in excellent conductivity (0.397 S/cm), which indicated the occurrence of the critical percolation threshold phenomenon, and also reached the maximum electromagnetic shielding effectiveness (EMSE) of 20 dB at 1.28–2.00 GHz. Laminated with five layers of composites, its EMSE achieved 25–38 dB at 0.3–3.0 GHz, corresponding to blocking of 94.38–98.74% electromagnetic waves.
    Relation: MATERIALS AND MANUFACTURING PROCESSES
    Appears in Collections:[時尚設計學系] 期刊論文

    Files in This Item:

    File SizeFormat
    index.html0KbHTML100View/Open


    All items in ASIAIR are protected by copyright, with all rights reserved.


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback