사

Structure/property relationship in rotor and friction-spun yarns

  • 출판일1996.08
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 249
The relationship between the structure and properties of ringspun, rotor open-end-spun and Dref friction-spun viscose ray on yarns is investigated. The dispersion of the fire helix angle seems to be the decisive factor for determining the tensile behaviour of rotor-spun yarn. In Dref yarns the extent of the dispersion as well as some degree of fibre entanglement determine yarn tensile behaviour. Yarn viscoelastic response, as well as creep and stress relaxation, are governed by the structure. In a ring yarn, a yarn with high fibre cohesion, stress relaxation is controlled by the relaxation characteristics of the component fibres. As regards elastic performance, Dref yarns may be considered as behaving like a crosslinked amorphous polymer, while rotor and ring yarns behave like a semicrystalline polymers with low and high degrees of crystallinity. The effect of twist increase on the tensile and viscoelastic behaviour of the yarns is also investigated.
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