一、织物服用性能的内容 1.几何结构 幅宽、密度（紧度、未充满系数）、平方米干重、 纱线线密度、混纺比、纱线结构 2.坚牢性 拉伸断裂、顶裂、撕裂、耐磨性 3.外观保持性 抗起毛起球性、尺寸稳定性、抗钩丝性、抗皱性等

纱线的弯曲特性 纱线抗弯曲作用的能力较小，具有非常突 出的柔顺性。实际上，纱线极少发生弯曲 破坏

1单根纱线强力试验机 试验单根纱线的强力试验机可采用Y361型 单纱强力试验机。他有三种型号：Y361－ 1型，强力范围为10~1000g；Y361－3 型，强力范围为120~3000g；Y361－30 型，强力范围为0～30×103g，以适应不 同单纱强力的需要

根据不同的分类方法，可将纱线分为多种类别 : 按组成纱线的纤维的形态结构分:短纤维纱、长丝纱、复合纱 ;

§女衬衫 §男衬衫 §变款衬衫

Outline Carbon fibers Glass fibers Aramid fibers Ultra High Modulus Polyethylene fibers Carbon nanotubes Ceramic fibers Mechanical properties of fibers

Course Syllabus Textbook – Kathryn L. Hatch, Textile Science, West Publishing Company, 1993. Reference book – Yao, M. et. al. Textile Materials (in Chinese)

Micro fibers Definition Fibers of < 1 denier Manufacturing of microfibers Bicomponent fibers: Island in sea Citrus

Introduction Fibers in which forming substance is cellulose acetate where not less than 92% of hydroxyl groups are acetylated: replacing -OH groups with - COCH3

Structures of wool fibers Submicrostructure – Cotex core of the wool fiber: 90% of the fiber volume, consists of countless long, spindle-shaped cells held together by intercellular cement