Effect of the entry cone angle of the spinneret hole on the flow characteristics of the polymer melt

Pervadchuk, V. P.; Glot, I.; Yankov, V. I.; Borisov, A. S.; Vinogradov, Yu. A.

doi:10.1007/bf00553303

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the bits and pieces of information, the effect of spinneret geometry on the spinning technology and structure of fiber could be seen obviously . Kirichenko et al .…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of spinneret geometric effect on spinning dynamics of dry‐jet wet‐spinning of cellulose/[BMIM]Cl solution

Xia

Wang

et al. 2016

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this study, the effect of spinneret geometry, including the entrance angle a of the entrance channel, the length L s , and the diameter D 0 of the exit channel, on the spinning dynamics of dry-jet wet-spinning of cellulose/1-butyl-3-methylimidazolium chloride ([BMIM]Cl) solution was simulated by using finite element method. Based on the mathematical model of dry-jet wet-spinning established in our previous work (Xia et al., Cellulose 2015, 22, 1963 the radial and axial profiles of velocity, pressure, and shear rate in the spinneret and the profiles of diameter, temperature, and tensile stress in the air-gap region were obtained. From the simulated profiles, the effect of spinneret geometric parameters on the flow behavior and the pressure drop of polymer solution in the spinneret and the die-swell ratio near the spinneret was discussed. The entrance angle a of the entrance channel mainly influences the flow behavior of polymer solution in the spinneret and the die-swell effect near the spinneret. As the decrease of the entrance angle a of the entrance channel, the vortices in the spinneret could be removed and the die-swell ratio decreases. The increase of the length L s of the exit channel results in the increase of pressure drop in the spinneret and the decrease of the die-swell ratio. It is also found that the increase of the diameter D 0 of the exit channel reduces the flow velocity of polymer solution and decreases the pressure drop in the spinneret at a constant mass flow rate.

show abstract

“…From the bits and pieces of information, the effect of spinneret geometry on the spinning technology and structure of fiber could be seen obviously . Kirichenko et al .…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of spinneret geometric effect on spinning dynamics of dry‐jet wet‐spinning of cellulose/[BMIM]Cl solution

Xia

Wang

et al. 2016

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Several numerical and experimental studies have addressed the flow behaviors of Newtonian and non-Newtonian fluids in a contraction or expansion nozzle [1][2][3]. Studies of polymer fluid flow in a micronozzle concentrate on viscosity due to varying temperature [4] or a fall in pressure [5], and on the effect on flow behavior of varying the parameters of the nozzle's geometry [6]. The effect on pressure of the dimensions of the micronozzle has also been considered [7].…”

Section: Introductionmentioning

confidence: 99%

Study of flow and heat transfer characteristics and LIGA fabrication of microspinnerets

Tzeng

P²

2003

J. Micromech. Microeng.

View full text Add to dashboard Cite

This investigation analyzes the flow, the heat transfer characteristics and the LIGA fabrication of a microspinneret. An experimental test model was built to elucidate the flow in the micronozzle. A numerical solution covers the range from Re = 10−8 to 1.0, proving that the flow characteristics of the micronozzle are similar to those of the test model. The Peclet number in the test model can be adjusted to a value close to that of the micronozzle. The LIGA fabrication technique, including lithography, electroforming and molding, is a new technique for fabricating many precise microstructures. The other advantages of the LIGA technique to make nozzles are the generation of a high aspect ratio and the flexibility of the nozzle's geometry. The textile industry employs several microspinnerets with high aspect ratios and different nozzle geometries, and represents an ideal context for applying the LIGA technique.

show abstract

Behaviors of flow mechanisms and heat transfer of non-Newtonian fluids through a spinneret

Tzeng

2003

Heat and Mass Transfer

View full text Add to dashboard Cite

Effect of the entry cone angle of the spinneret hole on the flow characteristics of the polymer melt

Cited by 3 publications

References 0 publications

Numerical investigation of spinneret geometric effect on spinning dynamics of dry‐jet wet‐spinning of cellulose/[BMIM]Cl solution

Numerical investigation of spinneret geometric effect on spinning dynamics of dry‐jet wet‐spinning of cellulose/[BMIM]Cl solution

Study of flow and heat transfer characteristics and LIGA fabrication of microspinnerets

Behaviors of flow mechanisms and heat transfer of non-Newtonian fluids through a spinneret

Contact Info

Product

Resources

About