Fiber structure development in high-speed melt spinning of poly(trimethylene terephthalate) (PTT)—On-line measurement of birefringence

2008 ◽  
Vol 46 (9) ◽  
pp. 847-856 ◽  
Author(s):  
Kyoung Hou Kim ◽  
Hyun Hok Cho ◽  
Hiroshi Ito ◽  
Takeshi Kikutani
Keyword(s):  
High Speed ◽  
Melt Spinning ◽  
Fiber Structure ◽  
Structure Development ◽  
Line Measurement ◽  
On Line ◽  
Trimethylene Terephthalate

On-Line Measurement of Fiber Temperature in the Melt-Spinning Processes

2013 ◽  
Vol 821-822 ◽  
pp. 149-152
Author(s):  
Xin Wen ◽  
Sheng Lin Yang ◽  
Guang Li
Keyword(s):  
High Speed ◽  
Melt Spinning ◽  
Probe Field ◽  
Infrared Thermometer ◽  
Line Measurement ◽  
Measurement Results ◽  
On Line ◽  
Important Means ◽  
Method Of Measurement ◽  
Reliable Temperature

The online temperature detections of fiber along the spinning line should be the important means for the precise controlling of fiber higher order structures as well as fiber-final performance. In this paper, a method of measurement fiber temperature has been introduced which mainly use the instrument of monochromatic infrared thermometer to measure fiber temperature in the melt-spinning processes. Due to the probe field of view of monochromatic infrared thermometer being much larger than the fiber diameter, monochrome infrared thermometers can't be used to measure temperature of fibers directly, the measurement results is an average between the fiber and backgrounds, which can't be used to indicate the temperature of fibers directly and have to calibrated. The calibrated results of monochromatic infrared thermometer are compared to the measurement results of infrared thermography. It has been found that the on-line measurement with infrared thermometer could promise high-speed and highly reliable temperature testing for the fibers.

On-line measurement of orientation development in the high-speed melt spinning process

1999 ◽  
Vol 39 (12) ◽  
pp. 2349-2357 ◽  
Author(s):  
Takeshi Kikutani ◽  
Kazuhito Nakao ◽  
Wataru Takarada ◽  
Hiroshi Ito
Keyword(s):  
High Speed ◽  
Melt Spinning ◽  
Line Measurement ◽  
Spinning Process ◽  
On Line

scholarly journals Effect of Polycondensation Catalyst on Fiber Structure Development in High-Speed Melt Spinning of Poly (Ethylene Terephthalate)

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1931 ◽  
Author(s):  
Eun Seon Kim ◽  
Hyun Ju Oh ◽  
Hyun-Joong Kim ◽  
Chun Gi Kim ◽  
Seong Yoon Park ◽  
...  
Keyword(s):  
High Speed ◽  
Melt Spinning ◽  
Crystallization Rate ◽  
Structural Development ◽  
Melt Crystallization ◽  
Fiber Structure ◽  
Structure Development ◽  
Scanning Calorimetry ◽  
Pet Fibers ◽  
Induced Crystallization

We conducted a preliminary study on fiber structural development in the high-speed melt spinning of environmentally friendly polyethylene terephthalate (Ti-PET) synthesized with 25 ppm of titanium-based catalyst, which was compared with conventional PET (Sb-PET) synthesized with 260 ppm of antimony-based catalyst. Gel permeation chromatography of Ti- and Sb-PET resins of intrinsic viscosity 0.63 confirmed that both resins have similar molecular weights and distributions. However, differential scanning calorimetry revealed that the Ti-PET resin exhibited a lower melt–crystallization peak and isothermal melt-crystallization rate than the Sb-PET resin. High-speed melt spinning of the Ti- and Sb-PET was possible up to a spinning velocity of 6 km/min. Two-dimensional wide-angle X-ray diffraction analyses showed that the molecular orientation of the obtained as-spun Ti- and Sb-PET fibers increased with spinning velocity, and a highly oriented, crystalline structure by orientation-induced crystallization started to appear from 5 km/min. Notably, Ti-PET fibers showed a lower degree of crystalline structural development and lower tensile strength compared with Sb-PET fibers under the high-speed spinning conditions. Our results suggest that the catalyst in PET resins can act as nucleating agents in thermal- and orientation-induced crystallization, and that differences in catalyst content can influence PET fiber structure development under extreme conditions in high-speed melt spinning.

High-Speed Melt Spinning of Polylactide/Poly(Butyleneterephthalate) Bicomponent Fibers: Mechanism of Fiber Structure Development and Dyeing Behavior

2019 ◽  
Vol 58 (10) ◽  
pp. 828-846 ◽  
Author(s):  
Yutaka Kawahara ◽  
Motohiro Hanada ◽  
Shota Onosato ◽  
Wataru Takarada ◽  
Midori Takasaki ◽  
...  
Keyword(s):  
High Speed ◽  
Melt Spinning ◽  
Fiber Structure ◽  
Structure Development ◽  
Bicomponent Fibers
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