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Polymer Mechanics

, Volume 14, Issue 6, pp 852–855 | Cite as

Lifetime levels and fracture of polyethylene terephthalate exposed to γ radiation and an aqueous medium

  • B. N. Narzullaev
  • S. N. Karimov
  • B. Tsoi
  • D. Shermatov
Strength Of Materials
  • 17 Downloads

Conclusion

1. An analysis of the lifetime distribution curves obtained by varying the test conditions has revealed discrete lifetime levels in PETP due to the presence in the material of structural defects with different degrees of dangerousness. These defects are found at the edges, at the surface and in the interior of the specimens.

2. Water affects irradiated and unirradiated PETP by reducing the probability of failure, rendering the structural defects less dangerous and, as a result, increasing the lifetime and impeding the fracture process.

3. On the dose range investigated, γ rays affect PETP specimens by causing defects that reduce the lifetime and facilitate the fracture process, the defects produced becoming more dangerous as the dose increases.

Keywords

Radiation Polyethylene Aqueous Medium Structural Defect Dose Range 
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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Literature cited

  1. 1.
    G. M. Bartenev, Ultrahigh-Strength and High-Strength Inorganic Glasses [in Russian], Moscow (1974).Google Scholar
  2. 2.
    N. B. Karpovich, G. M. Bartenev, I. V. Razumovskaya, and T. D. Dodonova, “Strength levels and lifetime of polystyrene fiber in various media”, in: Mechanical Properties of Structural Polymers Exposed to Various Media [in Russian], L'vov (1972), pp. 65–66.Google Scholar
  3. 3.
    S. A. Kazakevich, P. V. Kozlov, and A. P. Pisarenko, “Causes of the extremal variation of the strength properties of polymer film exposed to water”, Fiz.-Khim. Mekh. Mater.,6, No. 1, 75–79 (1969).Google Scholar
  4. 4.
    N. V. Pertsov, Ya. Mukhammed, F. N. Borisova, and P. V. Kozlov, “Effect of liquid media on the mechanical properties of polyethylene terephthalate film”, Fiz.-Khim. Mekh. Mater.,8, No. 2, 37–40 (1972).Google Scholar
  5. 5.
    S. D. Volkov, Statistical Theory of Strength [in Russian], Moscow (1960).Google Scholar
  6. 6.
    G. M. Bartenev and I. V. Razumovskaya, “Time dependence of the strength of brittle bodies in surface-active media”, Dokl. Akad. Nauk SSSR,150, 784–787 (1963).Google Scholar
  7. 7.
    N. I. Ivanova and N. V. Pertsov, “Variation of the structural-mechanical characteristics of amorphous polyethylene terephthalate in the presence of sorption of certain low-molecular-weight compounds”, Fiz.-Khim. Mekh. Mater.,13, No. 4, 93–98 (1977).Google Scholar
  8. 8.
    S. N. Karimov, B. N. Narzullaev, G. D. Korodenko, and A. Dzhaloliddinov, “Effect of γ radiation on the long-term strength of polyethylene terephthalate”, Mekh. Polim., No. 2, 239–243 (1973).Google Scholar

Copyright information

© Plenum Publishing Corporation 1979

Authors and Affiliations

  • B. N. Narzullaev
  • S. N. Karimov
  • B. Tsoi
  • D. Shermatov

There are no affiliations available

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