Electrical and mechanical properties of multi-walled carbon nanotubes reinforced PMMA and PS composites

被引：159

作者：

Mathur, R. B. ^{[1
]}

Pande, Shailaja ^{[1
]}

Singh, B. P. ^{[1
]}

Dhami, T. L. ^{[1
]}

机构：

[1] Natl Phys Lab, Carbon Technol Unit, Div Engn Mat, New Delhi 110012, India

来源：

POLYMER COMPOSITES | 2008年 / 29卷 / 07期

关键词：

D O I：

10.1002/pc.20449

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The use of multi-walled carbon nanotubes (MWCNT) as reinforcing material for thermoplastic polymer matrices, polymethyl methacrylate (PMMA), and polystyrene (PS) has been studied. MWCNT were synthesized by chemical vapor deposition (CVD) technique using ferrocene-toluene mixture. As-prepared nanotubes were ultrasonically dispersed in toluene and subsequently dispersed in PMMA and PS. Thin polymer composite films were fabricated by solvent casting. The effect of nanotube content on the electrical and mechanical properties of the nanocomposites was investigated. An improvement in electrical conductivity from insulating to conducting with increasing MWCNT content was observed. The carbon nanotube network showed a classical percolating network behavior with a low percolation threshold. Electromagnetic interference (EMI) shielding effectiveness value of about 18 dB was obtained in the frequency range 8.0-12 GHz (X-band), for a 10 vol% CNT loading. An improved composite fabrication process using casting followed by compression molding and use of functionalized MWCNT resulted in increased composites strength.

引用

页码：717 / 727

页数：11

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