This paper analyzes the characteristic features of necking during drawing and ultrahigh-speed spinning of polyethylene terephthalate (PET) yarns. It is established that despite the formal analogy, there are significant differences between necking in the indicated processes, due to the non-isothermal nature of ultrahigh-speed spinning. Based on literature data and my own ideas, I propose my own version of the necking mechanism during ultrahigh-speed spinning, which adds to information known about this process. When a neck appears during the ultrahigh-speed spinning process, the determining factors may be those related to the abrupt change in viscoelastic properties under the influence of high strain rates and the balance of acting forces.
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Translated from Khimicheskie Volokna, Vol. 48, No. 1, pp. 3-13, January-February, 2016.
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Geller, V.E. Characteristic Features of Necking During Drawing and Ultrahigh-Speed Spinning of Polyethylene Phthalate Yarns. Review. Fibre Chem 48, 1–11 (2016). https://doi.org/10.1007/s10692-016-9729-y
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DOI: https://doi.org/10.1007/s10692-016-9729-y