Melt spinning process

Polylactide (PLA) was mixed with 4 wt.% of carbon nanotubes (CNTs) to produce electrical conductive multifilament yarns by melt spinning process for humidity detection. Thanks to a variation of electrical conductivity, this flexible sensor could detect the moisture presence. The introduction of plasticizer was necessary to ensure higher fluidity and drawability of the blend during the spinning process. The plasticizer modifies the crystallinity and the mechanical properties of the yarns. The effectiveness of this sensor (PLA/4 wt.% CNTs fibres) sensitive to humidity, is optimal when the spinning conditions are adapted. In this way, the temperature and the rate of the drawing roll were reduced. The influence of these parameters on the crystallinity, the mechanical properties and the sensitivity of the yarns were studied. Once the appropriate spinning conditions found, one humidity sensitive yarn was processed and the repeatability and efficient reversibility of its sensitivity were highlighted.

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Effect of Cross-Sectional Configuration on Fiber Formation Behavior in the Vicinity of Spinning Nozzle in Bicomponent Melt Spinning Process

Journal of Fiber Science and Technology ◽

10.2115/fiberst.fiberst.2016-0024 ◽

2016 ◽

Vol 72 (7) ◽

pp. 154-159 ◽

Cited By ~ 1

Author(s):

Yiwen Chen ◽

Wataru Takarada ◽

Takeshi Kikutani

Keyword(s):

Melt Spinning ◽

Fiber Formation ◽

Cross Sectional ◽

Formation Behavior ◽

Spinning Process

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Initial Flow Analysis in Crucible-Nozzle During Planar Flow Melt Spinning Process

Processing and Characterization of Multicomponent Polymer Systems ◽

10.1201/9780429469794-15 ◽

2019 ◽

pp. 277-300

Author(s):

Sowjanya Madireddi

Keyword(s):

Melt Spinning ◽

Flow Analysis ◽

Planar Flow ◽

Initial Flow ◽

Spinning Process

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Study on the equivalent luminance of luminous fibers in photopic vision and scotopic vision

Textile Research Journal ◽

10.1177/0040517517697638 ◽

2017 ◽

Vol 88 (10) ◽

pp. 1157-1163 ◽

Cited By ~ 2

Author(s):

Yanhong Yan ◽

Chengxia Liu ◽

Xiaojun Ding

Keyword(s):

Experimental Data ◽

Rare Earth ◽

Melt Spinning ◽

Emission Spectra ◽

Scotopic Vision ◽

Photopic Vision ◽

Earth Material ◽

Long Afterglow ◽

Polyamide Fiber ◽

Spinning Process

Colored luminous fibers were prepared by a melt spinning process, adding colored pigments and long afterglow rare earth material into polyamide fiber. The colored luminous fibers had a variety of colors in photopic vision, and emitted colored light in mesopic vision and scotopic vision. Based on the experimental data of the emission spectra and the test luminance of the luminous fibers, the effect of the emissive colors of the luminous fibers on the equivalent luminance at different vision states was analyzed. The results showed that the effect of the emissive colors of white, red, yellow, and green luminous fibers on the equivalent luminance was not obvious in photopic and scotopic vision, but that of blue luminous fiber was obvious in photopic vision but not in scotopic vision.

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Computational Analysis of High-Speed Melt Spinning Process

Sen i Gakkaishi ◽

10.2115/fiber.50.9_p529 ◽

1994 ◽

Vol 50 (9) ◽

pp. P529-P536 ◽

Cited By ~ 4

Author(s):

TAKESHI KIKUTANI

Keyword(s):

High Speed ◽

Melt Spinning ◽

Computational Analysis ◽

Spinning Process

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Microstructure Analysis of Melt-Spun Al3Ti Intermetallics by XRD and EXAFS

MRS Proceedings ◽

10.1557/proc-460-103 ◽

1996 ◽

Vol 460 ◽

Author(s):

Jinmin Chen ◽

W. E. Frazier ◽

E. V. Barrera

Keyword(s):

Crystal Structure ◽

High Temperature ◽

Melt Spinning ◽

Composition Range ◽

Processing Parameters ◽

Wheel Speed ◽

Annealing Temperatures ◽

Melt Spun ◽

Temperature Heat ◽

Spinning Process

ABSTRACTIn an effort to expand the composition range over which Al3Ti is stable, various amounts of niobium were substituted for titanium and processed by melt-spinning. Several samples were annealed both at 600°C and 1000°C for 24 hours. The effects of processing parameters such as wheel speed, the amount of niobium, and annealing temperatures on the structure were investigated by XRD and EXAFS. XRD showed that for all the samples the only structure present was DO22-The DO22 structure was stable even after the high temperature heat treatments. By means of EXAFS, niobium atoms were observed to occupy titanium sites in the DO22 structure. Furthermore, in the unannealed samples, increasing wheel speed of the melt spinning process or the niobium concentration tended to distort the crystal structure. It was observed that Ti EXAFS had different results from the Nb EXAFS beyond their occupying similar sites, which suggested there may exist some composition zones, i.e. rich Nb zone or rich Ti zones, although the structures present were still DO22. The samples were found to experience different distortions as a function of annealing temperatures.

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