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江 南 大 学 考 试 卷 专 用 纸
《纺织材料学》（1）考试卷（A）样卷 使用专业、班级: 学号 姓名 题 数 得 分 一 二 三 总 分 1. The number of repeating units in a fiber polymer is called the . (monomer, degree of polymerization, polymerizing) 2. When a fabric is subject to abrasion, fiber ends will break, migrate to the surface, and form into a small ball that clings to the surface of the fabric. This is called . (fiber breakage, textile fatigue, pilling, milling) 3. Fabrics that are distorted during processing tend to relax to their natural dimensions after the first few laundering. This is called . (dimensional stability, elastic recovery, relaxation shrinkage) 4. Fiber classification ﹡ is a man-made, regenerated, filament or staple fiber. ﹡ is a natural, cellulose, seed, mono-cellular, staple fiber. ﹡ is a man-made, synthetic, polyamide filament or staple fiber. ﹡ is a natural, protein, multi-cellular, staple fiber. ﹡ is a natural, cellulose, bast, multi-cellular fiber. ﹡ is a man-made, synthetic, polyacrylonitrile filament or staple fiber. ﹡ is a natural, protein filament. ﹡ is a man-made, synthetic, polyester filament or staple fiber. (cotton; flax; wool; silk; viscose; polyester; nylon; acrylic; ) 5. In the chemical process called addition polymerization, monomers join together the loss of atoms. (without, with, because of). 考试形式开卷（ ）、闭卷（ ），在选项上打（√）
开课教研室 命题教师 命题时间 使用学期 总张数 教研室主任审核签字
本题 得分 一、填空题 〖从题后括号中选择答案，每空1分，共计60分〗 1
江 南 大 学 考 试 卷 专 用 纸
6. The best features of the cotton fibers under the microscope are and . (convolutions; crimps; triangular cross-section; kidney shaped cross-section) 7. The polymer is composed of 16 different amino acids, whilst the polymer is composed of 20 different amino acids. (flax; wool; silk; nylon) 8. The complexity of the wool polymer is illustrated by the different chemical groups it contains, and these chemical groups are able to form of the four inter-polymer forces of attraction. (one, two, three, all) 9. Inter-polymer forces of attraction ﹡ occur between negatively and positively charged radicals. ﹡ are single covalent bonds between two atoms sharing one pair of electrons. ﹡ exist between any two atoms or molecules if they are close enough together. ﹡ are weak electrostatic bonds which occur between hydrogen atoms and the strongly electronegative atoms: oxygen, nitrogen, fluorine and chlorine. (hydrogen bonds; cross-links; van der Waals’ forces; salt linkages) 10. The crystalline regions are those where part of molecules are arranged . (in regular order, in random disorganized state, in natural state). 11. Nylon 6,6 is made from two different monomers, each containing six carbon atoms. Therefore nylon 6,6 is a . (homopolymer, copolymer, cellulose polymer ) 12. Fibers with good absorbency are to build up static electricity. (easily, not likely, readily) 13. Inside a textile fiber, were the smallest structural units which consist of a few molecules. (protofibrils, microfibrils, macrofibrils) 14. is the ability of fibers to return to their original length after being stretched. (Tenacity, Elastic recovery, Elongation) 15. Pilling is a more serious problem in . (protein fibers, strong fibers, weak fibers, natural fibers) 16. Some man-made fibers are thermoplastic because they on exposure to heat. (break, soften or melt, harden, have hard handle) 17. The ability of a fiber to take water into itself is referred to as the . (basic fiber property, absorbency, hydrophobic nature) 2
江 南 大 学 考 试 卷 专 用 纸
18. The density of cellulosic fibers is generally . (low, light, high). 19. The degree of polymerization can be used to estimate the of the polymer. (length, thickness, fineness, brightness) 20. fibers are the most heat sensitive and the most flammable synthetic fibres in common use. (Polyester, Viscose, Acrylic, Cotton) 21. is defined as the weight in grams of 9000 meters of fiber. (Tex, Denier, Metric number) 22. Cotton has the degree of polymerization of about 5000. Its polymer consists of about 5000 . (cellobiose units, glucose units, amino acids) 23. Both acetate and triacetate fibers are very fibers. (crystalline, tough, amorphous, strong) 24. Elastomeric textile material tends to be to dye owing to the hydrophobic and very crystalline nature of their polymer system. (difficult, easy, simple, efficient) 25. Which of the following fibers is natural cellulosic fiber: (wool; flax; viscose; nylon) 26. Which of the following fibers has the best absorbency: (acetate; nylon; viscose; acrylic) 27. Metric count Nm and tex are both used as the measurements of fiber fineness, which of the following equations is correct: (Nm =9000/ tex; Nm =1000/ tex; Nm =9×tex) 28. Which of the following fibers is the lightest fiber in density: (cotton; wool; acrylic; polyester) 29. The most important characteristics of polyester fibers are their and (good absorbency; wrinkle-free appearance; ease of care; anti-static nature, soft handle) 3