Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-25T15:25:54.229Z Has data issue: false hasContentIssue false
  • English
  • Français

Processing, Dynamic Studies and Properties of Exfoliated Aerospace Epoxy-Organoclay Nanocomposites

Published online by Cambridge University Press:  15 March 2011

Chenggang Chen  and
David Curliss
Chenggang Chen
Affiliation:
University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0168, U.S.A.
David Curliss
Affiliation:
Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH 45433, U.S.A.
Get access

Abstract

Epoxy nanocomposites were prepared from the montmorillonite after organic treatment with a high Tg epoxy resin (Shell Epon 862 and curing agent W). Investigation of the rheological characteristics showed that the addition of clay to the resin did not significantly alter the viscosity or cure kinetics and that the modified resin would still be suitable for liquid composite molding techniques such as resin transfer molding. DSC was performed to study the kinetics of the curing reactions in the modified resin. An in situ small-angle x-ray scattering (SAXS) experiment was used to try to understand the structural development during cure. Based on the in situ SAXS data, structural changes were monitored in real time during cure and analyzed. Results from wide-angle x-ray diffraction, SAXS, and transmission electron microscopy of the polymer-silicate nanocomposites were used to characterize the morphology of the layered silicate in the epoxy resin matrix. The glassy and rubbery moduli of the polymer-silicate nanocomposites were found to be greater than the unmodified resin due to the high aspect ratio and high stiffness of the layered silicate filler. The solvent absorption in methanol was also slower for the polymer-silicate nanocomposites.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 703: Symposia U/V – Nanophase and Nanocomposite Materials IV , 2001 , V1.2
Copyright
Copyright © Materials Research Society 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Reinhart, T.J., Engineered Materials Handbook, Vol. 1, Composites Materials (ASM International, 1987).Google Scholar
2. Novak, B.M., Adv. Mater. 5, 422 (1993).Google Scholar
3. Ziolo, R.F., Giannelis, E.P., Weinstein, B.A., O'Horo, M.P., Granguly, B.N., Mehrot, V., Russell, M.W., Huffman, D.R., Science 257, 219 (1992).Google Scholar
4. Nesse, W.D., Introduction to Mineralogy, (Oxford University Press, Oxford, 2000) p.235.Google Scholar
5. Giannelis, E.P., Adv. Mater. 8 (1), 29 (1996).Google Scholar
6. LeBaron, P.C., Wang, Z., Pinnavaia, T. J., Applied Clay Science 15, 11 (1999).Google Scholar
7. Gilman, J.W., Applied Clay Science 15, 31 (1999).Google Scholar
8. Alexandre, M., Dubois, P., Materials Science and Engineering 28, 1 (2000).Google Scholar
9. Kornmann, X., Lindberg, H., Berglund, L.A., Polymer 42, 1303 (2001).Google Scholar
10. Lan, T., Kavirayna, P.D., Pinnavaia, T.J., J. Phys. Chem. Solids 57, 1005 (1996).Google Scholar
11. Messermith, P.B., Giannelis, E.P., Mater. Chem. 6, 1719 (2001).Google Scholar