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1. ÁгöĿǰÖ÷ÒªÉÌÒµ»¯Ïð½ºÆ·ÖֵIJ£Á§»¯×ª±äζÈ(Tg)µÄ´óС˳Ðò£¬²¢´Ó·Ö×ӽṹÓëÐÔÄܵĽǶȷÖÎö³öÏÖ²î±ðµÄÔÒò¼°ÆäÏà¹ØÓ¦ÓÃÇé¿ö¡£
2£¬´Ó½á¹¹¡¢ÐÔÄܽǶȳö·¢£¬·ÖÎö·úÏ𽺺͹èÏ𽺾ßÓÐÓÅÒì×ÛºÏÐÔÄܵÄÖ÷ÒªÔÒò£¬²¢¸ù¾ÝÆäÖ÷ÒªÐÔÄÜÁоٳöÏà¹ØÓ¦ÓÃÁìÓò Chapter 4
1. List two important characteristics for polymers that are to be used in fiber applications.
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2. How do the thermal and mechanical properties of Nomex and Kevlar compare and how are these differences related to their chemical structure? Which polymer would be expected to have the largest characteristic ratio? How can molecular weight of these polymers be determined?
3. What is the minimum length to diameter ratio for a substance to be classified as a fiber?
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4. Which is stronger: hydrogen bonding or dipole¨Cdipole interactions? Çâ¼ü½áºÏºÍż¼«-ż¼«½áºÏ ÄÇÖÖÇ¿¶È¸ü¸ß
5. Besides hydrogen bonding, what else is characteristic of fiber molecules?
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³ýÁËÇâ¼ü½áºÏÍ⣬ÏËά·Ö×Ó»¹¾ßÓÐÄÄÐ©ÌØÕ÷ 6. Which is more hydrophobic: cellulose or nylon 6,6? ÏËάºÍÄáÁú66ÄÄÖÖÊèË®ÐÔ¸úÇ¿£¿ 7. Is rayon produced by wet or dry spinning? ÈËÔìÏËάÊÇʪ·¨·ÄË¿»¹ÊǸɷ¨·ÄË¿£¿
8. Name two fibers that are produced by melt spinning. д³öÁ½ÖÖÈÛÈÚ·ÄË¿ÖÆ×÷µÄÏËά
9. Which has the lower denier value: a nylon fishline or nylon fiber used to manufacture hosiery?ÄáÁúµöË¿ºÍÄáÁúÏËÎ¬ÖÆÔìµÄÕë֯ƷÄÄÖÖ¼ÛÖµ¸üµÍ£¿ 10. How do the polyester fibers produced originally by Carothers differ from today¡¯s polyester fibers, such as Dacron?
Carothers×î³õÖÆ×÷µÄ¾Ûõ¥ÏËάÓëÏÖÔڵľÛõ¥ÏËά±ÈÈçµÓÂÚÓÐÊ²Ã´Çø±ð£¿ 11. ÌìÈ»ÏËάºÍ»¯Ñ§ÏËάµÄÖÖÀàÓÐÄÄЩ£¿ 12. ÏËάµÄ·Ö×ӽṹ¶ÔÏËάµÄÐÔÄÜÓкÎÓ°Ï죿
13. Õ³½ºÏËάΪʲô±»³ÆÎªÔÙÉúÏËά£¿ÆäÖ÷Òª³É·ÖÊÇʲô£¿
14. ÔÚÏËάÉú²ú¹ý³ÌÖÐΪʲôҪ½øÐÐÀÉ죬ÔÚÀÉì¹ý³ÌÖÐÏËάµÄ½á¹¹»á·¢Éúʲô±ä»¯£¿
15. ¼òÊöºÏ³ÉÏËάÉú²ú¹ý³ÌÖÐÀÉìºÍÈȶ¨Ð͵Ä×÷Óá£
16. ÈÜÒº·ÄË¿ºÍÈÛÌå·ÄË¿·½·¨ÓÐʲô²»Í¬£¬ËüÃÇ·Ö±ðÊÊÓÃÓÚʲôµÄ¾ÛºÏÎ 17. ¼òÊöµÓÂÚÏËάµÄÓÅȱµãºÍÖ÷ÒªµÄÓ¦ÓÃÁìÓò¡£
18. д³öÄáÁú66ºÍKevlarÏËάµÄ·Ö×ӽṹ£¬ÌÖÂÛÆä½á¹¹ÓëÐÔÄܵĹØÏµ¡£ 19. ˵Ã÷ëæÂÚÏËάÖмÓÈëµÚ¶þ¡¢Èýµ¯Ìå¶ÔÏËάµÄÐÔÄÜÓÐÄÄЩ¸Ä½ø¡£
20. ÔÙÉúÏËάÓÐÄÄЩÐÂÆ·ÖÖ£¿´Ó¿É³ÖÐø·¢Õ¹µÄ½Ç¶ÈÀ´¿´£¬»¹ÓÐÄÇЩ×ÊÔ´¿ÉÒÔÓÃÓÚÉú²úÏËά£¿ Chapter 5
1. Please explain the meaning of the following words: adhesive, adhesion and
cohesive?ÈçºÎ½âÊÍÏÂÁе¥´Ê£ºÕ³ºÏ¼Á Õ³ºÏ Äý¾ÛÁ¦ 2. How many types of adhesives can you list? Give some examples. ÄãÄÜÁоٳö¶àÉÙÖÖÕ³ºÏ¼Á£¬±ÈÈ磿
3. What are main resins of adhesives? And their advantages and disadvantages?
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ÓÐÄÄЩÖ÷ÒªµÄÊ÷Ö¬Õ³ºÏ¼Á£¿ËüÃǵÄÓÅȱµãÊÇʲô£¿
4. Please explain the importance of contact angle of a surface to adhesion.
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5. Please describe the process of adhesion. ÃèÊöÕ³½Ó¹ý³Ì
6. Why does epoxy adhesive can bond tightly with metals?
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7. What is the mechanism of polyurethane adhesives¡¯ reaction? What are reasons of urethane adhesives that make them good adhesives?
¾Û°±õ¥Õ³ºÏ¼ÁµÄ·´Ó¦»úÀíÊÇʲô£¿¾Û°±õ¥Õ³ºÏ¼ÁΪʲôÊÇÒ»¸öºÃµÄÕ³ºÏ¼Á?
8. What are main application fields of adhesives? Õ³ºÏ¼ÁµÄÖ÷ÒªÓ¦ÓÃÁìÓòÊÇʲô
9. How does a coating work? In other words, what are the processes of
film-forming?
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10. What are main basic ingredients of coatings? And explain the function of resins
in coatings.
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11. Name the main compositions in a waterborne coating for inner walls of houses. д³ö·¿ÎÝÄÚ±ÚË®ÐÔÍ¿ÁϵÄÖ÷Òª³É·Ö
12. What are main categories of pigments? Explain the differences between pigment
and dye in coating use.
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13. What do environment-friendly coatings include? Explain why they are
environment-friendly? »·¾³ÓѺÃÐÍÍ¿ÁÏÖ÷ÒªÓÐʲô?½âÊÍÒ»ÏÂΪʲôËüÃÇÊÇ»·¾³ÓѺÃ
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14. Which kind of coatings is most suitable for exterior application for a car? And
why? ÒÔÏÂÄÇÖÖÍ¿ÁÏ×îÊʺÏÓ¦ÓÃÔÚÆû³µµÄÍâ±íÃæ£¬ÔÒò (1) Acrylic coatings; (2) Alkyd coatings; (3) Epoxy coatings.
1)±ûÏ©ËáÍ¿ÁÏ;(2)´¼ËáÍ¿ÁÏ;(3)»·ÑõÊ÷֬ͿÁÏ
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