English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 54134/88902 (61%)
造访人次 : 10552615      在线人数 : 25
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/19522


    题名: Influence of Drawing Conditions on the Ultradrawing Properties of Film Specimens of Ultrahigh Molecular Weight Polyethylene and Low Molecular Weight Polyethylene Blends
    作者: Yeh, Jen-taut;Lin, Yue-tang;Chen, Kan-nan
    贡献者: 淡江大學化學學系
    关键词: achievable draw ratio;activation energy;apparent elongational viscosity;gel;optimum drawing temperature;ultradrawing
    日期: 2003-03
    上传时间: 2009-11-04 16:53:30 (UTC+8)
    出版者: Dordrecht: Springer Netherlands
    摘要: The influence of the drawing temperature and rate on the ultradrawing properties and deformation mechanisms of a series of film specimens prepared from varying concentrations of gel solutions of ultrahigh molecular weight polyethylene (UHMWPE) and low molecular weight polyethylene (LMWPE) blends is reported. The maximum achievable draw ratio was obtained when each UHMWPE/LMWPE film specimen was drawn at an optimum temperature (T op), wherein the T op values of each UHMWPE/LMWPE film specimen increased consistently with the drawing rate. The temperature dependence of the apparent elongational viscosity (a) revealed two distinguishable intervals with different activation energies. Coincidentally, the transition temperature (T r) obtained from the intersection of the two straight lines drawn parallel to the two distinct intervals is approximately equal to the T op value found for the film sample drawn at the same rate. Dynamic mechanical analysis of the film samples exhibited an extraordinary high transition peaked at temperatures near 95–115C, which are again very close to the T op and T r values found for the film samples drawn at varying rates, and increases significantly with the testing frequencies. Possible mechanisms accounting for these interesting deformations, temperature dependence of the apparent elongational viscosity and dynamic mechanical properties are suggested in this study.
    關聯: Journal of Polymer Research 10(1), pp.55-63
    DOI: 10.1023/A:1023961216058
    显示于类别:[化學學系暨研究所] 期刊論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    1022-9760_10(1)p55-63.pdf187KbAdobe PDF229检视/开启

    在機構典藏中所有的数据项都受到原著作权保护.

    TAIR相关文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回馈