Superior mechanical and electrical properties of multiwall carbon nanotube reinforced acrylonitrile butadiene styrene high performance composites |
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| Affiliation: | 1. Physics and Engineering of Carbon, Division of Materials Physics and Engineering, CSIR-National Physical Laboratory, New Delhi 12, India;2. Academy of Scientific and Innovative Research (AcSIR), CSIR-National Physical Laboratory, New Delhi 12, India;1. CSIR-National Physical Laboratory, New Delhi 110 012, India;2. Department of Mechanical Engineering and Materials Science, Rice University, Houston, TX 77005, United States;3. TIFR-Centre for Interdisciplinary Sciences, Tata Institute of Fundamental Research, Hyderabad 500 075, India;4. Advanced Functional Thin Films Department, Surface Technology Division, Korea Institute of Materials Science, Gyeongnam 642831, Republic of Korea;5. Department of Physics, University of Rajasthan, Jaipur 302 055, India;6. Department of Physics & Astrophysics, University of Delhi, Delhi 110 007, India;1. Department of Applied Physics, Defence Institute of Advanced Technology, Deemed University, Girinagar, Pune 411 025, India;2. Research & Development Establishment, DRDO, Pioneer Lines Dighi, Pune 411 015, India;1. CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012, India;2. Academy of Scientific & Innovative Research (AcSIR), India;3. Department of Textile Technology, Indian Institute of Technology, New Delhi, 110016, India;1. Centre for Polymer Science & Engineering, Indian Institute of Technology, New Delhi 110016, India;2. CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi 110012, India;3. Department of Chemistry, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Sonepat 131039, India;1. Center for Nano Science and Engineering, Indian Institute of Science, Bangalore 560012, India;2. Department of Chemical Engineering, Indian Institute of Science, Bangalore 560012, India;3. Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India;1. CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012, India;2. Academy of Scientific & Innovative Research (AcSIR), India |
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| Abstract: | In-house synthesized multiwall carbon nanotubes (MWCNTs) have been dispersed in acrylonitrile butadiene styrene (ABS) using a micro twin-screw extruder with back flow channel. The electrical and mechanical properties of MWCNTs in ABS with different wt% have been studied. Incorporation of only 3 wt. % MWCNTs in ABS leads to significant enhancement in the tensile strength (up to 69.4 MPa) which was equivalent to 29% increase over pure ABS. The effect of MWCNTs on the structural behaviour of ABS under tensile loading showed a ductile to brittle transition with increase concentration of MWCNTs. The results of enhanced mechanical properties were well supported by micro Raman spectroscopic and scanning electron microscopic studies. In addition to the mechanical properties, electrical conductivity of these composites increased from 10?12 to 10?5 Scm?1 showing an improvement of ～7 orders of magnitude. Due to significant improvement in the electrical conductivity, EMI shielding effectiveness of the composites is achieved up to ?39 dB for 10 wt. % loaded MWCNTs/ABS indicating the usefulness of this material for EMI shielding in the Ku-band. The mechanism of improvement in EMI shielding effectiveness is discussed by resolving their contribution in absorption and reflection loss. This material can be used as high-strength EMI shielding material. |
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| Keywords: | A Polymer matrix composites B Electrical properties B Mechanical properties |
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