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Engineering the Interphase in Reinforced Plastics

  • A. Khelawan
  • M. R. Piggott

Abstract

Careful investigation of the mechanics of the interphase between fibres such as Kevlar, carbon and glass, and thermosetting polymers, strongly suggests that the interphase fails by brittle fracture rather than yielding. Works of fracture can be as low as 10 Jm−2, so interphase toughening should improve the properties of fibre composites very significantly. To this end, glass fibre reinforced epoxies have been made with rubber interphases. Both reactive and non-reactive liquid and solid rubbers were investigated, and the viscoelastic properties of the rubbers were modified using fine solid particles. The results indicate that the work of fracture of the composites can be increased significantly, without any great loss in other mechanical properties. Neat rubbers were better overall than filled rubbers, and the best results were obtained when there was a chemical interaction between the rubber and the silane sizing on the fibres.

Keywords

Shear Strength Fumed Silica Fibre Composite Methyl Ethyl Ketone Interlaminar Shear Strength 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    E.P. Plueddemann, Silane Coupling Agents (Plenum Press, N.Y., 1982), Chpt. 1.CrossRefGoogle Scholar
  2. 2.
    M.R. Piggott, Advances in Composites (Eds. T.L. Vigo & B.J. Kinzig, American Chemical Soc. 1989) Chpt. 4.Google Scholar
  3. 3.
    M.R. Piggott, Comp. Sci. Tech. 30, 1987, p.295.CrossRefGoogle Scholar
  4. 4.
    M.R. Piggott and M.M. Reboredo, Proc. 34th Int. SAMPE Symp. (Reno, Nevada, May 1989), 1913Google Scholar
  5. 5.
    M.R. Piggott, J. Mater Sci. 5, 1970, p. 669.CrossRefGoogle Scholar
  6. 6.
    M.R. Piggott, J. Mater Sci. 9, 1974, p. 494.CrossRefGoogle Scholar
  7. 7.
    G.A. Cooper and M.R. Piggott, Proc. ICF4 3, 1977, p. 303.Google Scholar
  8. 8.
    J.V. Mullin and V.F. Mazzio, J. Mech. Phys. Solids 20, 1972, p. 391.CrossRefGoogle Scholar
  9. 9.
    L.D. Tryson and J.L. Kardos, 30th Ann. Conf. SPI, 1981, 2E.Google Scholar
  10. 10.
    N.H. Sung, T.J. Jones and N.P. Suh, J. Mater Sci. 12, 1977 p. 239.CrossRefGoogle Scholar
  11. 11.
    N.L. Hancox and H. Wells, Fib. Sci. Tech. 10, 1977 p. 9.CrossRefGoogle Scholar
  12. 12.
    N.J. Wadsworth and I. Spilling, Brit. J. Appl. Phys. 1, 1968 p. 1049.Google Scholar
  13. 13.
    B. Harris, P.W.R. Beaumont and E.M. De Ferran, J. Mater. Sci. 6, 1977 p. 238.CrossRefGoogle Scholar
  14. 14.
    P.W.K. Lam and M.R. Piggott, J. Mater Sci 24. 1989 p. 4068.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 1990

Authors and Affiliations

  • A. Khelawan
    • 1
    • 2
  • M. R. Piggott
    • 1
  1. 1.University of TorontoTorontoCanada
  2. 2.Sinclair & Valentine Co.DownsviewCanada

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