Skip to main content
SpringerLink
Log in

Polycarbodiimide and polyimide/cyanate thermoset in situ molecular composites

  • Articles
  • Published:
Journal of Materials Research Aims and scope Submit manuscript

Abstract

The synthesis of polycarbodiimide and polyimide in a cyanate resin precursor was achieved. A unique procedure for achieving a high molecular weight of the molecular composite reinforcement molecules was demonstrated. In spite of phase separation being present during the processing, the final cured composites were transparent. The enhanced mechanical properties and the presence of a single Tg, which increases with rigid rod content, were indications that a molecular composite was achieved. The agreement between measured mechanical properties and those predicted using molecular mechanics simulations CERIUS2 software was encouraging.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. W-F. Hwang, D. R. Wiff, and T. E. Helminiak, U.S. Patent 4,377,546 (1982).

  2. W-F. Hwang, D.R. Wiff, C. L. Benner, and T. E. Helminiak, J. Macromol. Sci., Phys. B22m, 231–257 (1983).

    Article  Google Scholar 

  3. D. R. Wiff, T. E. Helminiak, and W-F. Hwang, in High Modulus Polymers, edited by A. E. Zachariodes and R.S. Porter (Marcel Dekker, New York, 1988), Chap. 8.

    Google Scholar 

  4. G. M. Lenke and D. R. Wiff, U.S. Patent 5,068,292 (1991); U.S. Patent 5,223,588 (1993).

  5. G. M. Lenke and D. R. Wiff, U.S. Patent 5,223,584 (1993).

  6. G. Husman, T. Helminiak, W. Adams, D. Wiff, and C. Benner, Org. Coat. Plast. Chem. 40, 797–802 (1979).

    Google Scholar 

  7. L. Onsager, Ann. N.Y. Acad. Sci. 51, 627–659 (1949).

    Article  CAS  Google Scholar 

  8. P. J. Flory and A. Abe, Macromol. 11, 1119–1144 (1978).

    Article  CAS  Google Scholar 

  9. P. J. Flory, in Recent Adv. Liq. Cryst. Polym., edited by L. Chapoy (Elsevier Applied Science, London, UK, 1984), pp. 99–103.

    Google Scholar 

  10. D.R. Wiff, G. M. Lenke, and P.D. Fleming, J. Polym. Sci., Polym. Phys. Ed. 32, 2555–2565 (1994).

    Article  Google Scholar 

  11. D.R. Wiff and G.M. Lenke, 37th Int. SAMPE Symp. 37, 991–1003 (1992).

    CAS  Google Scholar 

  12. P. C. Painter, W-L. Tang, J.F. Graf, B. Thomson, and M. M. Coleman, Macromol. 24, 3929–3936 (1991).

    Article  CAS  Google Scholar 

  13. J. F. Wolfe, in Encyclopedia of Polymer Science and Engineering (John Wiley & Sons, New York, 1988), Vol. 11, pp. 601–635.

    Google Scholar 

  14. T. W. Campbell, J. J. Monagle, and V. S. Foldi, J. Am. Chem. Soc. 84, 3673–3677 (1962).

    Article  CAS  Google Scholar 

  15. T.W. Campbell and K.C. Smeltz, J. Org. Chem. 28, 2069–2075 (1963).

    Article  CAS  Google Scholar 

  16. M.E. Baumgarten, Org. Synth. (John Wiley & Sons, New York, 1973), Vol. 5, pp. 787–790.

    Google Scholar 

  17. L.M. Alberino, W. J. Farrissey, and A. A. R. Sayigh, J. Appl. Polym. Sci. 21, 1999–2008 (1977).

    Article  CAS  Google Scholar 

  18. D. A. Shimp et al., AroCy Cyanate Ester Resins: Chemistry, Properties and Applications (Ciba-Geigy publication, 1990).

  19. S. L. Mayo, B. D. Olafson, and W. A. Goddard, J. Chem. Phys. 94, 8891–8909 (1991).

    Google Scholar 

  20. J. J.P. Stewart, J. Comp. Chem. 10, 209–220 (1989); J.J. P. Stewart, J. Comput. Aid. Mol. Des. 4, 1–105 (1990).

    Article  CAS  Google Scholar 

  21. J. J.P. Stewart, J. Comp. Chem. 10, 209–220 (1989); J.J. P. Stewart, J. Comput. Aid. Mol. Des. 4, 1–105 (1990).

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Materials Directorate, WL/MLPJ, Air Force Research Laboratory, Wright-Patterson AFB, 45433, Ohio, USA

    D. R. Wiff

  2. Massillon, 49 5th Street S.E., 44646, Ohio, USA

    G. M. Lenke

  3. Department of Paper & Printing Science and Engineering, Western Michigan University, Kalamazoo, 49008, Michigan, USA

    P. D. Fleming III

Authors
  1. D. R. Wiff
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. G. M. Lenke
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. P. D. Fleming III
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Wiff, D.R., Lenke, G.M. & Fleming, P.D. Polycarbodiimide and polyimide/cyanate thermoset in situ molecular composites. Journal of Materials Research 13, 1840–1847 (1998). https://doi.org/10.1557/JMR.1998.0261

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1557/JMR.1998.0261

Search

Navigation