Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-20T07:41:17.740Z Has data issue: false hasContentIssue false
  • English
  • Français

Evolution of mechano-chemistry and microstructure of a calcium aluminate-polymer composite: Part I. Mixing time effects

Published online by Cambridge University Press:  03 March 2011

M.A. Gülgün ,
W.M. Kriven ,
L.S. Tan  and
A.J. McHugh
M.A. Gülgün
Affiliation:
Department of Material Science and Engineering, University of Illinois at Urbana-Champaign, Urbana. Illinois 61801
W.M. Kriven
Affiliation:
Department of Material Science and Engineering, University of Illinois at Urbana-Champaign, Urbana. Illinois 61801
L.S. Tan
Affiliation:
Department of Chemical Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
A.J. McHugh
Affiliation:
Department of Chemical Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
Get access

Abstract

Paste development and evolution of microstructure, microchemistry, and mechanical properties of macro-defect-free composites were investigated. Mixing torque plots from a Banbury mixer showed a “window of processibility” within which an optimum polymer-particle network structure formed. This processing window can be controlled by mixing rate and temperature. Network development during paste formation governed the flexural strength and microstructure of the cured material. Electron microscopy studies of the composites corresponding to various points along the mixing torque curve revealed a matrix formation-destruction process that was linked to the mixing activity and the mechano-chemistry of the system. Microchemical evolution in the composite was studied by EDS. These studies suggested that a combined convection and diffusion mechanism was responsible for the migration of Al3+ and Ca2+ ions into the different regions of the microstructure. Increasing concentrations of these elements in the polymer regions stiffened the matrix, leading to complete degradation on further mixing.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 7 , July 1995 , pp. 1746 - 1755
Copyright
Copyright © Materials Research Society 1995

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

1Birchall, J. D., Howard, A. J., and Kendall, K., Nature (London) 289, 388 (1981).CrossRefGoogle Scholar
2Birchall, J. D., Howard, A. J., Kendall, K., and Raistrick, J. H., US Patent 4410 366 (1983).Google Scholar
3Russell, P. P., M. S. Thesis, University of Illinois (1991).Google Scholar
4Desai, R. A., M. S. Thesis, University of Illinois (1990).Google Scholar
5McHugh, A. J. and Tan, L. S., in Advanced Cementitious Systems: Mechanisms and Properties, edited by Glasser, F. P., McCarthy, G. J., Young, J. F., Mason, T. O., and Pratt, P. L. (Mater. Res. Soc. Symp. Proc. 245, Pittsburgh, PA, 1992), p. 185.Google Scholar
6McHugh, A.J. and Tan, L. S., Adv. Cem. Bas. Mat. 1, 2 (1993).CrossRefGoogle Scholar
7Popoola, O. O. and Kriven, W. M., J. Mater. Res. 7, 1545 (1992).CrossRefGoogle Scholar
8Popoola, O. O., Kriven, W. M., and Young, J. F., Ultramicroscopy 37, 318 (1991).CrossRefGoogle Scholar
9Young, J. F., in Specialty Cements with Advanced Properties, edited by Scheetz, B.E., Landers, A. G., Jennings, H., and Odler, I. (Mater. Res. Soc. Symp. Proc. 179, Pittsburgh, PA, 1990), p. 101.Google Scholar
10Wachtman, J. B. Jr., Capps, W., and Mandel, J., J. Mater. 7, 188 (1972).Google Scholar
11Gülgün, M.A., Popoola, O. O., and Kriven, W. M., J. Am. Ceram. Soc. 77, 531 (1994).CrossRefGoogle Scholar
12Zaluzec, N. J., Bull. Electron Microscopy Soc. Am. 14, 67 (1984).Google Scholar
13Tan, L. S., M. S. Thesis, University of Illinois (1992).Google Scholar
14Leblanc, J. L., Prog. Trends Rehol. 11, 32 (1988).Google Scholar
15Cheremisinoff, N. P., Polymer Mixing and Extrusion Technology (Marcel Dekker, New York, 1987), Chap. 5.Google Scholar
16Palmgren, H., Rubber Chem. Technol. 48, 462 (1975).CrossRefGoogle Scholar
17Cotten, G. R., Rubber Chem. Technol. 57, 118 (1984).CrossRefGoogle Scholar
18Rudin, A., The Elements of Polymer Science and Engineering (Academic Press, New York, 1982), Chap. 6.Google Scholar
19Gülgün, M. A., Ph.D. Thesis, University of Illinois, in preparation.Google Scholar
20George, C. M., Structure and Performance of Cements (Applied Science Publishers, London, U.K., 1983), p. 415.Google Scholar
21Tan, L. S., Ph.D. Thesis, University of Illinois, in preparation.Google Scholar
22Rodgers, S. A., Brooks, S. A., Sinclair, W., Groves, G. W., and Double, D. D., J. Mater. Sci. 20, 2853 (1985).CrossRefGoogle Scholar
23Gülgün, M.A., Popoola, O. O., Nettleship, I., Kriven, W. M., and Young, J. F., in Advanced Cementitious Systems: Mechanisms and Properties, edited by Glasser, F. P., McCarthy, G. J., Young, J. F., Mason, T. O., and Pratt, P. L. (Mater. Res. Soc. Symp. Proc. 245, Pittsburgh, PA, 1992), p. 199.Google Scholar
24Technology of Monolithic Refractories (Plibrico Japan Co. Ltd., Tokyo, Japan, 1984).Google Scholar