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Toughening mechanisms in elastomer-modified epoxies

Part 1 Mechanical studies

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Abstract

Some brittle epoxies can be toughened significantly by the addition of an elastomeric phase. A great deal of controversy still exists on the nature of the toughening mechanisms. In this work tensile dilatometry at constant displacement rates was used to determine whether voiding, crazing or shear banding are the deformation mechanisms. Diglycidyl ether-bisphenol A epoxies toughened by various levels of several types of carboxyl-terminated butadiene nitrile liquid rubber were studied. The results indicate that at low strain rates the rubber particles simply enhance shear deformation. At sufficiently high strain rates the rubber particles cavitate and subsequently promote further shear deformation. No indication of crazing as an important toughening mechanism is found. No significant effect of rubber particle size or type can be ascertained.

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References

  1. S. Kunz, PhD thesis, University of Cambridge (1978).

  2. S. Kunz-Douglass, P. W. R. Beaumont andM. F. Ashby,J. Mater. Sci. 15 (1980) 1109.

    Google Scholar 

  3. W. D. Bascom andD. L. Hunston, in Proceedings of International Conference on Toughening of Plastics, London, 1978 (Plastics and Rubber Institute) p. 22.1.

  4. J. N. Sultan, R. C. Laible andF. J. McGarry,Appl. Polym. Symp. 16 (1971) 127.

    Google Scholar 

  5. J. N. Sultan andF. J. McGarry,J. Polym. Sci. 13 (1973) 29.

    Google Scholar 

  6. W. D. Bascom, R. L. Cottington, R. L. Jones andP. Peyser,J. Appl. Polym. Sci. 19 (1975) 2545.

    Google Scholar 

  7. W. D. Bascom andR. L. Cottington,J. Adhesion 7 (1976) 333.

    Google Scholar 

  8. W. D. Bascom, R. L. Cottington andC. O. Timmons,Appl. Polym. Symp. 32 (1977) 165.

    Google Scholar 

  9. W. D. Bascom, R. Y. Ting, R. J. Moulton, C. K. Riew andA. R. Siebert,J. Mater. Sci. 16 (1981) 2657.

    Google Scholar 

  10. C. B. Bucknall andT. Yoshii,Br. Polym. J. 10 (1978) 53.

    Google Scholar 

  11. Idem, in Proceedings of 3rd International Conference on Deformation, Yield and Fracture of Polymers, Cambridge, 1976 (Plastics and Rubber Institute) p. 13.1.

  12. C. K. Riew, E. H. Rowe andA. R. Siebert,ACS Adv. Chem. Ser. 154 (1976) 326.

    Google Scholar 

  13. E. H. Rowe, in Proceedings of International Conference on Toughening Plastics, London, 1978 (Plastics and Rubber Institute) p. 23.1.

  14. H. Breuer, F. Haaf andJ. Stabenow,J. Macromol. Sci. Phys. B14 (3) (1977) 387.

    Google Scholar 

  15. M. A. Maxwell andA. F. Yee,Polym. Eng. Sci. 21 (1981) 205.

    Google Scholar 

  16. A. F. Yee, W. V. Olszewski andS. Miller,ACS Adv. Chem. Ser. 154 (1976) 97.

    Google Scholar 

  17. S. S. Sternstein andL. Ongchin,ACS Polym. Prep. 10(2) (1969) 1117.

    Google Scholar 

  18. C. B. Bucknall, “Toughened Plastics” (Applied Science, London, 1977).

    Google Scholar 

  19. R. Ramsteiner,Polymer 20 (1979) 839.

    Google Scholar 

  20. A. Needleman,J. Appl. Mech., Trans. ASME 39 (1972) 964.

    Google Scholar 

  21. J. Mijovik andJ. A. Koutsky,Polymer 20 (1979) 1095.

    Google Scholar 

  22. R. J. Young, in “Developments in Polymer Fracture-1”, edited by E. H. Andrews (Applied Science, London, 1979) p. 183.

    Google Scholar 

  23. J. Lilley andD. G. Holloway,Phil. Mag. 28 (1973) 215.

    Google Scholar 

  24. R. J. Morgan andJ. E. O'Neal, in “Chemistry and Properties of Crosslinked Polymers”, edited by S. S. Labana (Academic Press, New York, 1977) p. 289.

    Google Scholar 

  25. A. C. Meeks,Polymer 15 (1974) 675.

    Google Scholar 

  26. S. C. Kunz andP. W. R. Beaumont,J. Mater. Sci. 16 (1981) 3141.

    Google Scholar 

  27. A. J. Kinloch, S. J. Shaw, D. A. Tod andD. L. Hunston,Polymer 24 (1983) 1341.

    Google Scholar 

  28. R. A. Pearson andA. F. Yee,J. Mater. Sci. 21 (1986) 2475.

    Google Scholar 

  29. Idem, in preparation.

  30. A. F. Yee, R. J. Bankert, K. L. Ngai andR. W. Rendell, in preparation.

  31. E. E. Underwood, “Quantitative Sterology” (Addison-Wesley, Reading, Massachusetts, 1970) p. 109.

    Google Scholar 

  32. A. L. Gurson,J. Eng. Mater. Tech., Trans. ASME 99 (1977) 2.

    Google Scholar 

  33. H. Yamamoto,Int. J. Fracture 14 (1978) 347.

    Google Scholar 

  34. V. Tvergaard,ibid. 17 (1981) 389.

    Google Scholar 

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Author notes

  1. A. F. Yee

    Present address: Department of Materials Science and Engineering, University of Michigan, 48109, Ann Arbor, Michigan, USA

  2. R. A. Pearson

    Present address: General Electric Plastics Europe, PO Box 117, 4600, AC Bergen op Zoom, The Netherlands

Authors and Affiliations

  1. Polymer Physics and Engineering Branch, Corporate Research and Development, General Electric Co., 12301, Schenectady, New York, USA

    A. F. Yee & R. A. Pearson

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  1. A. F. Yee
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  2. R. A. Pearson
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Yee, A.F., Pearson, R.A. Toughening mechanisms in elastomer-modified epoxies. J Mater Sci 21, 2462–2474 (1986). https://doi.org/10.1007/BF01114293

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  • DOI: https://doi.org/10.1007/BF01114293

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