Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Manufacturing/Material Property Characterization of Polymer Nano-composites with Chemically Functionalized Carbon Nanotubes

화학적으로 기능화된 탄소나노튜브를 사용한 고분자 복합재료의 제조 및 물성 평가에 대한 연구

  • 김태구 (세종대학교 공과대학 기계공학과) ;
  • 곽정춘 (세종대학교 공과대학 나노공학과) ;
  • 이내성 (세종대학교 공과대학 나노공학과) ;
  • 이종휘 (세종대학교 공과대학 나노공학과) ;
  • 박주혁 (세종대학교 기계공학과 세종-일진자동차부품연구소)
  • Published : 2004.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

This study aims to obtain fundamental understandings involving the manufacturing processes of nano-composites with chemically surface-modified multi-walled carbon nanotubes(MWCNTs), and explore the role of functionalized MWCNTs in the epoxy/MWCNT composites. For this purpose, MWCNTs were purified by the thermo-chemical oxidation process, and incorporated into an epoxy matrix by in situ polymerization process, the surface of MWCNTs were functionalized with carboxyl functions which were demonstrated by an infrared spectroscopy. The mechanical properties of epoxy/MWCNT nano-composites were measured to investigate the role of a chemically functionalized carbon nanotubes. To improve the dispersion quality of MWCNTs in the epoxy matrix, methanol and acetone were exploited as dispersion media with sonification. The epoxy/MWCNT nano-composites with 1 or 2 wt.％ addition of functionalized carbon nanotubes show an improved tensile strength and wear resistance in comparison with pure epoxy, which shows the mechanical load transfer improves through chemical bonds between epoxy and functionalized MWCNTs. The tensile strength with 7 wt.％ functionalized MWCNTs increases by 28％ and the wear resistance is dramatically improved by 100 times.

Keywords

References

  1. Iijima, S., 1991, 'Helical Microtubules of Graphitic Carbon,' Nature, Vol. 254, pp. 56-58 https://doi.org/10.1038/354056a0
  2. Gojny, F. H., Nastalczyk, J., Roslaniec Z., and Sculte, K., 2002, 'Surface Modified Multi-walled Carbon Nanotubes in CNT/Epoxy-composites.' Physical Chemistry Letters, Vol. 370, pp. 820-824 https://doi.org/10.1016/S0009-2614(03)00187-8
  3. Ishii., T., Nozawa, H., Tamamum, T., 1997, 'A Nano-composite Resist System: A New Approach to Nanometer Pattern Fabrication,' Microelectronic Engineering, Vol. 35, pp. 113-116 https://doi.org/10.1016/S0167-9317(96)00167-0
  4. Allaoui, A., Bai, S., Cheng, H. M., and Bai, J, 2002, 'Mechanical and Electreical Properties of a MWNT/Epoxy Composites,' Composite Science and Technology, Vol. 62, pp. 1993-1998 https://doi.org/10.1016/S0266-3538(02)00129-X
  5. Andrews, R., Jacques, D., Qian, D., and Dickey, E. C, 2001, 'Purification and Structural Annealing of Multiwalled Carbon Nanotubes at Graphitization Temperatures,' Carbon, Vol. 35, pp. 1681-1687 https://doi.org/10.1016/S0008-6223(00)00301-8
  6. Wang, L.Y., Tu, J.P, Chen, W.X., and Zhang, X.B., 2003, 'Friction and Wear Behavior of Electroless Ni-Based CNT Composite Coatings,' Wear, Vol. 254, pp. 1289-1293 https://doi.org/10.1016/S0043-1648(03)00171-6
  7. Lim, Dae-Soon, An, Jeong-Wook, Lee, Hack Joo, 2002, 'Effect of Carbon Nanotube Addition on the Tribological Behavior of Carbon/Carbon Composites,' Wear, Vol. 252, pp. 512-517 https://doi.org/10.1016/S0043-1648(02)00012-1
  8. Stephan, C, Nguyen, T. P., Lamy, D. C, Lefrant, S., Journet, C, and Bernier, P., 2000, 'Characterization of Singlewalled Carbon Nanotubes-PMMA Composites,' Synthetic Metals, Vol. 108, pp. 139-149 https://doi.org/10.1016/S0379-6779(99)00259-3
  9. An, J. W., You, D, H., and Lim, D. S., 2003, 'Tribological Properties of Hot-Pressed Alumina-CNT Composites,' Wear, Vol. 255, pp. 677-681 https://doi.org/10.1016/S0043-1648(03)00216-3