Effect of processing method on the shielding effectiveness of electromagnetic interference of MWCNT/PMMA composites

被引：119

作者：

Yuen, Siu-Ming ^{[1
]}

Ma, Chen-Chi M. ^{[1
]}

Chuang, Chia-Yi ^{[1
]}

Yu, Kuo-Chi ^{[1
,2
]}

Wu, Sheng-Yen ^{[1
]}

Yang, Cheng-Chien ^{[2
]}

Wei, Ming-Hsiung

机构：

[1] Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu 30043, Taiwan

[2] Chung Shan Inst Sci & Technol, Chem Syst Res Div, Lungtan, Taiwan

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2008年 / 68卷 / 3-4期

关键词：

nano composites; carbon nanotubes; polymer-matrix composites (PMCs); scanning electron microscopy (SEM); shielding effectiveness (SE) of electromagnetic interference; WALLED CARBON NANOTUBE; CARBON-NANOTUBE/SILOXANE/POLY(UREA URETHANE) NANOCOMPOSITES; MECHANICAL-PROPERTIES; DISPERSION; MORPHOLOGY; POLYMERIZATION; POLYETHYLENE; ACID;

D O I：

10.1016/j.compscitech.2007.08.004

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

MWCNT/PMMA composites were prepared by in situ and ex situ methods. SEM microphotographs reveal that the MWCNT/PMMA composites that are prepared in situ adhere better than those prepared ex situ. MWCNT/PMMA composites prepared in situ exhibit a lower electrical resistivity and a lower percolation threshold than those prepared ex situ. The effects of the method of processing the MWCNT/PMMA, the MWCNT content and the composite stacking process on the shielding effectiveness (SE) of the electromagnetic interference (EMI) of the MWCNT/PMMA composites were examined. The SE of EMI of MWCNT/PMMA increased with MWCNT content. The composites prepared in situ have higher SE values. Additionally, composites prepared by stacking ten layers of 0.1 mm MWCNT/PMMA have a higher SE than that prepared from a single 1.0-mm-thick piece of bulk MWCNT/PMMA. The characteristic SE spectra of all systems were also discussed. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：963 / 968

页数：6

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