Effect of loading concentration on the electrical and hardness properties of MWCNT/epoxy nanocomposites

R. Nishata Royan, Abu Bakar Sulong, Jaafar Sahari

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Carbon nanotubes have excellent mechanical and electrical properties, and are also a good reinforcement material for composites than conventional materials. The matrix used in this study was epoxy and reinforcement filler in multi-walled carbon nanotubes (MWCNTs). The different MWCNTs loading concentrations (0 ∼ 10 wt. %) were added into the epoxy resin. The dispersion of MWCNTs in epoxy resin was conducted using high speed mixer through mechanical shearing mechanism. The mixture of epoxy/MWNTs suspension was poured into the mold and compression molding was conducted for fabrication of MWCNTs/epoxy nanocomposites. The electrical conductivity of nanocomposite by variation of CNTs concentration was measured by the four point probe. Dispersion state of CNTs in epoxy matrix was observed on fractured surface by scanning electron microscopic. Hardness of the composite was tested using the Dinamic Ultra Micro Hardness machine. Non conductive epoxy polymer becomes conductor as addition of CNTs.. Electrical conductivity of nanocomposite plates increased with increasing CNTs concentration. Agglomerations of CNTs were observed on fractured surfaces. This phenomenon due to CNTs which used in this study was at as produced state where no modification is being done on it. Long and entanglement of individual CNTs easily lead to agglomerations. Van de Wall's force interactions between CNTs also contribute to the agglomerations of CNTs. Hardness of the composite increases with the CNTs loading concentrations until it reaches a maximum peak at the composition of 5wt% of CNTs but the hardness decreases rapidly with loading greater than 5wt% of CNTs.

Original languageEnglish
Title of host publicationKey Engineering Materials
Pages157-161
Number of pages5
Volume471-472
DOIs
Publication statusPublished - 2011
Event8th International Conference on Composite Science and Technology, ICCST8 - Kuala Lumpur
Duration: 22 Mar 201124 Mar 2011

Publication series

NameKey Engineering Materials
Volume471-472
ISSN (Print)10139826

Other

Other8th International Conference on Composite Science and Technology, ICCST8
CityKuala Lumpur
Period22/3/1124/3/11

Fingerprint

Carbon Nanotubes
Carbon nanotubes
Nanocomposites
Hardness
Epoxy Resins
Agglomeration
Epoxy resins
Reinforcement
Composite materials
Compression molding
Shearing
Microhardness
Fillers
Suspensions
Polymers
Electric properties
Scanning
Fabrication
Mechanical properties
Electrons

Keywords

  • Carbon nanotube
  • Electrical conductivity
  • Hardness
  • Thermoset based nanocomposites

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Royan, R. N., Sulong, A. B., & Sahari, J. (2011). Effect of loading concentration on the electrical and hardness properties of MWCNT/epoxy nanocomposites. In Key Engineering Materials (Vol. 471-472, pp. 157-161). (Key Engineering Materials; Vol. 471-472). https://doi.org/10.4028/www.scientific.net/KEM.471-472.157

Effect of loading concentration on the electrical and hardness properties of MWCNT/epoxy nanocomposites. / Royan, R. Nishata; Sulong, Abu Bakar; Sahari, Jaafar.

Key Engineering Materials. Vol. 471-472 2011. p. 157-161 (Key Engineering Materials; Vol. 471-472).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Royan, RN, Sulong, AB & Sahari, J 2011, Effect of loading concentration on the electrical and hardness properties of MWCNT/epoxy nanocomposites. in Key Engineering Materials. vol. 471-472, Key Engineering Materials, vol. 471-472, pp. 157-161, 8th International Conference on Composite Science and Technology, ICCST8, Kuala Lumpur, 22/3/11. https://doi.org/10.4028/www.scientific.net/KEM.471-472.157
Royan, R. Nishata ; Sulong, Abu Bakar ; Sahari, Jaafar. / Effect of loading concentration on the electrical and hardness properties of MWCNT/epoxy nanocomposites. Key Engineering Materials. Vol. 471-472 2011. pp. 157-161 (Key Engineering Materials).
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