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https://irlib.pccu.edu.tw/handle/987654321/41956
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| 題名: | Synergistic effects of micro-/nano-fillers on conductive and electromagnetic shielding properties of polypropylene nanocomposites |
| 作者: | Li, TT (Li, Ting-Ting)
Chen, AP (Chen, An-Pang)
Hwang, PW (Hwang, Po-Wen)
Pan, YJ (Pan, Yi-Jun)
Hsing, WH (Hsing, Wen-Hao)
Lou, CW (Lou, Ching-Wen)
Chen, YS (Chen, Yueh-Sheng)
Lin, JH (Lin, Jia-Horng) |
| 貢獻者: | 紡織工程學系 |
| 關鍵詞: | ELECTRICAL-CONDUCTIVITY
GRAPHENE
CARBON
COMPOSITES
NANOPARTICLES
EFFICIENCY
FILMS
GAS |
| 日期: | 2018 |
| 上傳時間: | 2019-01-22 15:19:15 (UTC+8) |
| 摘要: | 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 thermo-gravimetric 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 degrees became stronger. TGA showed that the GNS/CF/PP composite can be used at high temperature below 456 degrees 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. |
| 顯示於類別: | [紡織工程學系] 期刊論文
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