Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Effect of Laser Drawing Conditions on the Mechanical Properties of Poly(ethylene terephthalate) Fibers

$CO_2$ 레이저 연신 조건이 PET 섬유의 기계적 특성에 미치는 영향

  • Kwon, Yo-Han (Department of Molecular System Engineering, College of Engineering, Hanyang University) ;
  • Kim, Seong-Hun (Department of Molecular System Engineering, College of Engineering, Hanyang University)
  • 권요한 (한양대학교 공과대학 분자시스템공학과) ;
  • 김성훈 (한양대학교 공과대학 분자시스템공학과)
  • Published : 2006.12.31
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Abstract

The mechanical properties of poly(ethylene terephthalate) (PET) fibers obtained by $CO_2$ laser-heated and high speed drawing process were investigated in terms of their dependence on the laser power and the temperature. The PET fibers were drawn with laser radiation heating under constant draw ratio (1.7) at constant feed roller speed of 100 m/min by the change in the $CO_2$ laser power from 0 to 35 W and different temperature (room temperature, $120^{\circ}C\;and\;140^{\circ}C$). The $CO_2$-laser-heated-drawn PET fibers were characterized with X-ray diffraction (WAXD), differential scanning calorimetry (DSC), birefringence and tensile testing. The mechanical properties of the PET fibers increased with increasing laser power at high temperature, which was attributed to the improvement of molecular orientation, the development of ordered crystalline structure and the increase in the crystallinity.

Keywords

References

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