 核力 核模型 核磁共振  宇称 弱相互作用宇称不守恒  夸克模型  核的放射性

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

Introduction The larva of certain insects for use in their building webs, climbing ropes and cocoons Spiders Commercial silk industry: use larva of silkworm Application: Mostly apparel, was also used for parachutes

国家开放大学：2008—2009学年第一学期“开放本科”土木工程专业建筑结构试验期末试题（1月）

国家开放大学：2008—2009学年第一学期“开放专科”建筑施工与管理专业建筑结构期末试题（1月）

国家开放大学：2008—2009学年第一学期“开放专科”建筑施工与管理专业建筑测量期末试题（1月）