Komputerowe modelowanie procesu formowania włókien ze stopionego polimeru krystalizującego. Cz. II. Zastosowanie modelu

L. Jarecki

Published : 2022-09-19

Vol. 46 No. 6 (2001)

Computer modeling of melt spinning from a crystallizing polymer. Part II. Applications of the mathematical model

L. Jarecki

Abstract

The model developed (cf. Part I) is used to describe melt spinning from a crystallizing poly(ethylene terephtalate) (PET). Results of the calculations are illustrated with axial profiles of local velocity, temperature, tensile stress and degree of crystallinity (Figs. 1-3, 5-8). The melt spinning involving zone heating (Figs. 9-12) allowed to disclose a limited range of spinning speeds and heating zone temperatures, consequent upon coupling of stress-induced crystallization with crystallinity-controlled solidification. This coupling also leads to multiple model solutions involving, or not involving, crystallization. The range of admissible spinning speeds is governed by the temperature of the heating zone. Model computations showed the zone heating applied in melt spinning from PET to increase considerably the amorphous orientation in fibers at moderate take-tip speeds and to reduce considerably the fiber take-up stress.

Keywords

model matematyczny ; formowanie włókien ze stopionego polimeru ; formowanie włókien z poli(tereftalanu etylenu) ; grzanie strefowe melt spinning ; melt spinning from poly(ethylene terephthalate) ; mathematical model of melt spinning ; computer modelling ; extensional flow ; Newtonian fluid ; Maxwellian fluid ; molecular orientation ; non-isothermal crystallization ; oriented crystallization

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Jarecki, L. (2022). Computer modeling of melt spinning from a crystallizing polymer. Part II. Applications of the mathematical model. Polimery, 46(6), 420-427. Retrieved from https://ichp.vot.pl/index.php/p/article/view/2092

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