Regularities of Low-Temperature Deformation and Fracture of Polyimide Films of Kapton H Type of Different Thickness

  • Viktory A. Lototskaya B. Verkin Institute for Low Temperature Physics and Engineering of National Аcademy of Science of Ukraine, Kharkiv, Ukraine https://orcid.org/0000-0001-8766-3154
  • Leonid F. Yakovenko B. Verkin Institute for Low Temperature Physics and Engineering of National Аcademy of Science of Ukraine, Kharkiv, Ukraine https://orcid.org/0000-0003-0001-5571
  • Evgeniy N. Aleksenko B. Verkin Institute for Low Temperature Physics and Engineering of National Аcademy of Science of Ukraine, Kharkiv, Ukraine https://orcid.org/0000-0002-6505-0426
  • Vyacheslav V. Abraimov Harbin Institute of Technology Harbin, People's Republic of China
  • Wen Zhu Shao Harbin Institute of Technology Harbin, the People’s Republic of China
DOI: https://doi.org/10.26565/2312-4334-2020-4-18
Keywords: polyimides, low temperatures, limit of forced elasticity, fracture stress, deformation

Abstract

The mechanical characteristics (limit of forced elasticity σforc, fracture stress σfr, relative deformation to failure εfr) of polyimide films of kapton H type under uniaxial tension conditions along the direction of drawing in the temperature range (4.2-293 K), deformation rates (10-5 - 10-3 s-1) and film thicknesses (25, 75 and 125 μm) were investigated. It is discovered, that the forced-elastic state remains for all films up to 4.2 K of all strain rates - σfors<σfr. In this case, the reserve of elasticity significantly depends on the thickness of the film with a decrease in temperature. A sharp decrease in εfr occurs in films: 125 μm thick - at 77 K, 75 μm thick - at 4.2 K. Two variants of deformation curves are possible in a 25 μm thick film at 4.2 K: with a short nonlinear stage or with a long one proceeding jumpily. The working surface of the samples that have undergone jump deformation is covered with a deformation relief, partially representing a delayed highly elastic deformation. The σfors limit is most sensitive to the strain rate. The nature of the strain rate sensitivity σfors(έ) depends on the temperature and film thickness. The change to the opposite in the character of σfors(έ) and σfr(έ) with a decrease in temperature to 4.2 K in 75 and 125 thick films was found for a first time. Change in the character of σfors(έ) is not observed in 25 μm thick film  which retains the maximum reserve of elasticity at 4.2 K

Downloads

Download data is not yet available.

References

M.I. Bessonov, M.M. Koton, V.V. Kudryavtsev, and l.A. Layus, Полііміди – клас термостійких полімерів [Polyimides – class of heat-resistant polymers], (Nauka, Leningrad, 1984), pp. 328. (in Russian).

G.M. Bartenev, and Yu.S. Zuev, Міцність та руйнування високоеластичних матеріалів [Strength and rupture of highly elastic materials], (Himiyu, Moscow, 1964), pp. 335. (in Russian)

V.V. Abraimov, N.N. Agashkova, L. Bone, I.V. Budnyak, N.I. Velichko, A.V. Krevsun, V.I. Kostenko, F. Lura, and A.M. Markus, Kosm. nauka tehnol. 1(1), 57-68 (1995), https://doi.org/10.15407/knit1995.01.057. (in Russian).

V.P. Soldatov, G.I. Kirichenko, V.V. Abraimov, I.S. Braude, and V.G. Geidarov, Low Temperature Physics, 42, 817 (2016), https://doi.org/10.1063/1.4963917.

V.A. Lototskaya, L.F. Yakovenko, E.N. Aleksenko, V.V. Abraimov, and Wen Zhu Shao, East. Eur. J. Phys. 4, 44-52 (2017), https://doi.org/10.26565/2312-4334-2017-2-06.

V.G. Geidarov, I.S. Braude, N.N. Gal’tsov, Yu.M. Pohribnaya, V.A. Lototskaya, and N.A. Aksenova, Struсtural Studies of Polyimide Films. Size Effect, Nano Studies, 19, 11-14 (2019) http://dspace.nplg.gov.ge/bitstream/1234/312051/1/Nano_Studies_2019_N19.pdf.).

Ye.G. Lur'e, L.G. Kazaryan, E.L. Uchastkina,V.V. Kovriga, K.N. Vlasova, M.L. Dobrokhotova, L.N. Yemel'yanova, Polymer Science U.S.S.R. 13(3), 685-692 (1971), https://doi.org/10.1016/0032-3950(71)90033-5.

E.G. Lur'e, and V.V. Kovriga, Polymer Mechanics, 13, 496–501 (1977), https://doi.org/10.1007/BF00859325.

V.P. Pshenitsyna, L.G. Kazaryan, Ye.G. Lur'ye, M.L. Lebedinskaya, and V.V. Kovriga, The spectroscopic study of polyimide film deformations, Polymer Science U.S.S.R. 14(3), 702-707 1972, https://doi.org/10.1016/0032-3950(72)90242-0.)

L.М. Volikova, and V.K. Chernetskiy, in: Прикладне кріогенне і вакуумне матеріалознавство [Applied cryogenic and vacuum material science], (Naukova dumka, Kyiv, 1991), pp. 137-143. (in Russian)

Published
2020-11-20
Cited
How to Cite
Lototskaya, V. A., Yakovenko, L. F., Aleksenko, E. N., Abraimov, V. V., & Shao, W. Z. (2020). Regularities of Low-Temperature Deformation and Fracture of Polyimide Films of Kapton H Type of Different Thickness. East European Journal of Physics, (4), 144-153. https://doi.org/10.26565/2312-4334-2020-4-18
Issue
No. 4 (2020): East European Journal of Physics
Section
Original Papers

Copyright (c) 2020 Viktory A. Lototskaya, Leonid F. Yakovenko, Evgeniy N. Aleksenko, Vyacheslav V. Abraimov, Wen Zhu Shao

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Authors who publish with this journal agree to the following terms:

    • Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
    • Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
    • Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).

Most read articles by the same author(s)