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폴리프로필렌 이형단면사 제조에서 방사조건이 이형도에 미치는 영향

Effect of Spinning Condition on Shape Factor in Polypropylene Profiled Yarn Spinning

  • 주제(KDC) 530.000
  • 발행기관 건국대학교
  • 발행년도 1997
  • 총서유형 Journal
  • 본문언어 한국어

초록/요약

The influence of spanning condition on the shape factor of polypropylene profiled yarn was studied experimentally. Test spinning of polypropylene was carried out by utilizing a Y-shaped capillary die which has been designed to produce profited yarn. The types, of spring machine used for this study were both conventional undrawn yarn spinning and one-step spin-draw machine. From the experimental results, there was little differences in the shape factor between undrawn and drawn yarns. The shape of the yarn was mainly determined in the spinning process. Also, the shape factor of the drawn yarn produced from the spin- draw machine was greater than that of by conventional spinning and drawing two- step process. Anisotropy of surface tension in cross section of extrudates was responsible for the resulting shape factor. As the output rate and the fineness of yarn Increased, its shape factor decreased.

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목차

Ⅰ.서론
Ⅱ.실험
1.원료
2.실험기기 및 실험방법
3.방사장치
4.이형단면 다이
Ⅲ.결과 및 고찰
1.PP의 유변특성
2.모세관 내에서의 유동
3.모세관(capillary)의 형상과 다이 팽윤
4.방사조건과 이형도 변화
Ⅳ.결론

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