Two-dimensional modeling of dry spinning of polymer fibers

Gou, Zeming

doi:10.1016/s0377-0257(04)00060-6

Cited by 8 publications

(15 citation statements)

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“…Cellulose acetate/acetone dry spinning was previously also investigated in [9,17]. The results obtained by our model-simulation framework in [19] stand in accordance to the data in [17].…”

Section: Industrial Applicationsupporting

confidence: 75%

“…We assume that a polymer solvent mixture consisting of cellulose acetate (CA)-acetone is dry spun. Table 2 Physical parameters of the industrial dry spinning setups taken from [9,17] and setup-specific reference values Table 3 Process parameters of the industrial dry spinning setup (cf. Fig.…”

Section: Appendix: Data To Industrial Processmentioning

confidence: 99%

“…A comparative theoretical and experimental study of a cellulose acetate/acetone dry spinning system was presented in [17]. The works of [8,9] extended the models from viscous to viscoelastic material behavior. In [19] we recently developed a dimensionally reduced fiber model which consists of one-dimensional equations for tangential fiber velocity and stress and two-dimensional advection-diffusion equations covering the cross-sectional variations of polymer mass fraction and fiber temperature.…”

Section: Introductionmentioning

confidence: 99%

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Industrial dry spinning processes: algorithmic for a two-phase fiber model in airflows

et al. 2020

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The dry spinning of fibers can be described by three-dimensional multi-phase flow models that contain key effects like solvent evaporation and fiber-air interaction. Since the direct numerical simulation of the three-dimensional models is in general not possible, dimensionally reduced models are deduced. We recently developed a one-two-dimensional fiber model and presented a problem-tailored numerical solution strategy in Wieland et al. (J Comput Phys 384:326-348, 2019). However, in view of industrial setups with multiple fibers spun simultaneously the numerical schemes must be accelerated to achieve feasible simulation times. The bottleneck builds the computation of the radial concentration and temperature profiles as well as their cross-sectionally averaged values. In this paper we address this issue and develop efficient numerical algorithms. MSC: 34B08; 68U20; 35Q79; 45D05; 76-XX

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“…Cellulose acetate/acetone dry spinning was previously also investigated in [9,17]. The results obtained by our model-simulation framework in [19] stand in accordance to the data in [17].…”

Section: Industrial Applicationsupporting

confidence: 75%

Section: Appendix: Data To Industrial Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Industrial dry spinning processes: algorithmic for a two-phase fiber model in airflows

et al. 2020

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“…The initial solvent fraction measured by our gravimetric method was smaller than the nominal content in the polymer solution. This lower value was attributed to the flash evaporation caused by rapid pressure reduction that occurred near the extrusion point 26. Our results reveal that approximately 50% of the solvent evaporated within the first 3 minutes of the gravimetry test, and the filament deposited from the 30 wt% PLA solution exhibited the shortest drying period.…”

Section: Methodsmentioning

confidence: 71%

Solvent‐Cast Three‐Dimensional Printing of Multifunctional Microsystems

Guo

Gosselin

Guérin

et al. 2013

Small

178

153

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“…All of the models mentioned above were based on the assumption that spinning drop solutions are Newtonian fluid and the viscoelastic rheological behavior was not considered. Recently, the work on dry‐spinning by Gou and McHugh12, 13 presented a modified model with viscoelasticity as well as solidification mechanism. They also developed a two‐dimensional model in ternary system, giving more detailed simulation of CA/acetone/water spinning solution 14, 15.…”

Section: Introductionmentioning

confidence: 99%

Simulation of dry‐spinning process of polyimide fibers

Deng

Xia

et al. 2009

J of Applied Polymer Sci

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As one type of high-performance fibers, the polyimide fibers can be prepared from the precursor polyamic acid via dry-spinning technology. Unlike the dry-spinning process of cellulose acetate fiber or polyurethane fiber, thermal cyclization reaction of the precursor in spinline with high temperature results in the relative complex in the dryspinning process. However, the spinning process is considered as a steady state due to a slight degree of the imidization reaction from polyamic acid to polyimide, and therefore a one-dimensional model based on White-Metzer viscoelastic constitutive equation is adopted to simulate the formation of the fibers. The changes of solvent mass fraction, temperature, axial velocity, tensile stress, imidization degree, and glass transition temperature of the filament along the spinline were predicted. The effects of spinning parameters on glass transition temperature and imidization degree were thus discussed.

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Two-dimensional modeling of dry spinning of polymer fibers

Cited by 8 publications

References 0 publications

Industrial dry spinning processes: algorithmic for a two-phase fiber model in airflows

Industrial dry spinning processes: algorithmic for a two-phase fiber model in airflows

Solvent‐Cast Three‐Dimensional Printing of Multifunctional Microsystems

Simulation of dry‐spinning process of polyimide fibers

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