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Fibers and polymers v.10 no.2, 2009년, pp.266 - 271  

The Effect of Physical Ageing on Torque in Worsted Spun Yarns

Phillips, David    (CSIRO Materials Science and Engineering   ); Hair, Jan    (CSIRO Materials Science and Engineering   ); Marsh, Julia    (CSIRO Materials Science and Engineering   ); Staynes, Laurie    (CSIRO Materials Science and Engineering  );
  • 초록

    The intrinsic torque of freshly spun wool yarns is affected by ageing of wool roving prior to spinning as well as the storage time of the yarn after spinning. The effect of physical ageing of roving on yarn torque properties has not been observed before and this study shows that the yarn intrinsic torque increases with ageing of the roving and decreases or relaxes with the yarn storage time. The dependency of the intrinsic torque on the roving ageing time and the yarn storage time after spinning show a simple double-logarithmic shift factor of 0.42 compared with the value of 1 found generally for amorphous polymeric materials. The self-plying twist of the yarns used in this study shows a close link to the intrinsic torque and both are affected by the history of the roving prior to spinning. Significant reductions in the self-plying twist were obtained when deaged rovings were used in spinning. When self-plying twist is used as a predictor of fabric spirality the roving and yarn history needs to be considered. This study shows that low intrinsic torque yarns can be produced by deageing of the roving prior to spinning.


  • 주제어

    Torque .   Ageing .   Roving .   Spinning .   Yarn .   Plying twist .   Spirality.  

  • 참고문헌 (20)

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    20. F.-J. Wortmann and S. De Jong, J. Appl. Polym. Sci., 30, 2195 (1985) 

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