The effect of temperature, static load, and electron irradiation on the deformation of linear polymeric films

  • A.I. Kupchishin Abay Kazakh National Pedagogical University, Kazakhstan, Almaty
  • M.N. Niyazov Abay Kazakh National Pedagogical University, Kazakhstan, Almaty
  • B.G. Taipova Abay Kazakh National Pedagogical University, Kazakhstan, Almaty
  • N.N. Khodarina Abay Kazakh National Pedagogical University, Kazakhstan, Almaty
  • K.S. Shakhanov Abay Kazakh National Pedagogical University, Kazakhstan, Almaty
  • B.A. Tronin Abay Kazakh National Pedagogical University, Kazakhstan, Almaty

Abstract

Experimental studies on the effect of temperature, static load and electron irradiation on the de-formation of polytetrafluoroethylene were carried out. Up to 35 °C the influence of load and tempera-ture leads to a sharp elongation of the samples, which is caused by the rectification of swirling com-plexes of macromolecules and rigidly connected chains. A catastrophic failure of weak circuits, includ-ing those associated with the presence of phase transitions occurs with increasing temperature to 45 °C. Curve (t) has a trend of a gradual recovery in the saturation at t > 40 °C, which is associated with rupture of the hard, more durable chains. The maximum deformation of 500 % is achieved at t = 85 °C and σ = 13 MPa. Dependences of the return deformation on time at static load and room tempera-ture are investigated. With increasing radiation dose, the return deformation decreases, and the strength limit of the polymer takes the value equal to 6 – 9 MPa. Electronic effects on literature the leads to a decrease in ductility and a significant decrease in recurrent strain that is associated with the destruction of the polymer. The curves described in the exponential model show satisfactory agree-ment of the experimental data with the calculation.

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Published
2018-09-29
How to Cite
KUPCHISHIN, A.I. et al. The effect of temperature, static load, and electron irradiation on the deformation of linear polymeric films. Recent Contributions to Physics (Rec.Contr.Phys.), [S.l.], v. 66, n. 3, p. 55-61, sep. 2018. ISSN 1563-0315. Available at: <http://bph.kaznu.kz/index.php/zhuzhu/article/view/785>. Date accessed: 20 oct. 2018.
Section
Condensed Matter Physics and Materials Science Problems. NanoScience

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