教師資料查詢 | 類別: 期刊論文 | 教師: 陳幹男 CHEN KAN-NAN (瀏覽個人網頁)

標題:Spinning and drawing properties of ultrahigh-molecular-weight polyethylene fibers prepared at varying concentrations and temperatures
學年92
學期1
出版(發表)日期2003/11/01
作品名稱Spinning and drawing properties of ultrahigh-molecular-weight polyethylene fibers prepared at varying concentrations and temperatures
作品名稱(其他語言)
著者Jian, Tao; Shyu, Wei-de; Lin, Yue-tang; Chen, Kan-nan; Yeh, Jen-taut
單位淡江大學化學學系
出版者Society of Plastics Engineers; John Wiley & Sons
著錄名稱、卷期、頁數Polymer Engineering & Science 43(11), pp.1765-1777
摘要The concentrations and temperatures of ultrahigh-molecular-weight polyethylene (UHMWPE) gel solutions exhibited a significant influence on their rheological and spinning properties. The shear viscosities of UHMWPE solutions increased consistently with increasing concentrations at a constant temperature above 80°C. Tremendously high shear viscosities of UHMWPE gel solutions were found as the temperatures reached 120–140°C, at which their shear viscosity values approached the maximum. The spinnable solutions are those gel solutions with optimum shear viscosities and relatively good homogeneity in nature. Moreover, the gel solution concentrations and spinning temperatures exhibited a significant influence on the drawability and microstructure of the as-spun fibers. At each spinning temperature, the achievable draw ratios obtained for as-spun fibers prepared near the optimum concentration are significantly higher than those of as-spun fibers prepared at other concentrations. The critical draw ratio of the as-spun fiber prepared at the optimum concentration approached a maximum value, as the spinning temperature reached the optimum value of 150°C. Further investigations indicated that the best orientation of the precursors of shish-kebab-like entities, birefringence, crystallinity, thermal and tensile properties were always accompanied with the as-spun fiber prepared at the optimum concentration and temperature. Similar to those found for the as-spun fibers, the birefringence and tensile properties of the draw fibers prepared at the optimum condition were always higher than those of drawn fibers prepared at other conditions but stretched to the same draw ratio. Possible mechanisms accounting for these interesting phenomena are proposed.
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語言英文
ISSN0032-3888
期刊性質國外
收錄於SCI
產學合作
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