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Structure-process-property relationships in polyester spun yarns: The role of fiber friction.

机译：聚酯短纤纱的结构-工艺-性能关系：纤维摩擦的作用。

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摘要

The research explored fiber-process-structure-property relationships in friction, bending, and tensile properties, hairiness and evenness of 100% polyester air-jet yarns. Eight different fiber samples with different spin finish type, spin finish level, fiber denier, and fiber length were used to produce yarn samples at 30 conditions using central composite design where first nozzle pressure, second nozzle pressure, main draft ratio, and spinning speed were varied at five levels.; A yarn structural scheme based on the crimpiness of core, wrapping angle, and hair characteristics of air-jet yarns was proposed and used to establish fiber-process-structure-property relationships.; Empirical models established for fiber-process-structure relationships in air-jet yarns explain the effects of fiber parameters and process parameters on the structure of yarns. Empirical models established for fiber-structure-property relationships and fiber-process-property relationships in air-jet yarns explain the effects of fiber parameters and structural parameters/process parameters on various yarn properties.; Roles of fiber parameters in determining the properties of air-jet yarns were explained by two effects: (i) effect of intrinsic fiber properties, and (ii) effect of changes in yarn structure resulting from changes in fiber properties. The relative importance of the two effects in determining yarn properties was identified; the effect of changes in yarn structure resulting from varying fiber properties (e.g., surface properties and bending properties) can have a greater effect than that of intrinsic fiber properties.; Yarn properties were simultaneously optimized using Derringer-Suich method which utilizes desirability function. A yarn friction model comprising the effects of bending force and elongation force was proposed.; Thus, the research has led to a better understanding of friction, bending, and tensile properties of air-jet yarns. Such an understanding is critical to the engineering of yarns with desired structural and physical properties.
机译：该研究探索了100％聚酯喷气纱在摩擦，弯曲和拉伸性能，毛羽和均匀性方面的纤维-工艺-结构-性能关系。使用中央复合设计，使用具有不同纺丝油剂类型，纺丝油剂水平，纤维旦尼尔和纤维长度的八种不同的纤维样品在30个条件下生产纱线样品，其中第一喷嘴压力，第二喷嘴压力，主要牵伸比和纺丝速度在五个级别上有所不同。提出了一种基于芯线的卷曲度，包角和喷气纱的毛发特性的纱线结构方案，并将其用于建立纤维-加工-结构-性能关系。建立的用于喷气纱线中纤维-过程-结构关系的经验模型解释了纤维参数和过程参数对纱线结构的影响。建立的用于喷气纱中纤维-结构-性能关系和纤维-工艺-性能关系的经验模型解释了纤维参数和结构参数/工艺参数对各种纱线性能的影响。纤维参数在确定喷气纱性能中的作用由两个作用解释：（i）固有纤维性能的影响，以及（ii）由纤维性能变化导致的纱线结构变化的影响。确定了确定纱线性能的两种作用的相对重要性；与纤维固有特性相比，由变化的纤维特性（例如，表面特性和弯曲特性）引起的纱线结构变化的影响可能会更大。使用Derringer-Suich方法同时优化纱线性能，该方法利用了所需功能。提出了包括弯曲力和伸长力影响的纱线摩擦模型。因此，研究使人们对喷气纱的摩擦，弯曲和拉伸性能有了更好的了解。这种理解对具有所需结构和物理性能的纱线工程至关重要。

著录项

  • 作者

    Hong, Joohyun.;

  • 作者单位

    Georgia Institute of Technology.;

  • 授予单位 Georgia Institute of Technology.;
  • 学科 Textile Technology.
  • 学位 Ph.D.
  • 年度 2000
  • 页码 286 p.
  • 总页数 286
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 轻工业、手工业;
  • 关键词

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