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研究生:吳秉桓
研究生(外文):Bing-huan Wu
論文名稱:超高分子量聚乙烯/奈米碳管纖維超高延伸行為之研究
論文名稱(外文):Investigation of Ultradrawing Behavior of Ultra-high Molecular Weight Polyethylene / Carbon Nanotube Blends Fibers
指導教授:葉正濤
指導教授(外文):Jen-taut Yeh
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:高分子工程系
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:2005
畢業學年度:94
語文別:中文
論文頁數:80
中文關鍵詞:纖維奈米碳管分子量聚乙烯折射率抗張性能超高分子量聚乙烯凝膠流變性質熱學性質
外文關鍵詞:UHMWPECNTsCarbon Nanotubenanotubes
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本研究主要針對超高分子量聚乙烯(UHMWPE,U)/奈米碳管(CNTs,C)凝膠纖維之組成比例對其延伸機理與延伸後纖維樣品之物理性質變化作一系列之探討。結果發現,經由不同組成比例所製備的凝膠纖維,其臨界可延伸比(Drc)隨著奈米碳管含量增加而逐漸上升,而且當奈米碳管比例達到0.0015wt%時,纖維之Drc、雙折射及比強力性質均達到最高。另外有趣的是,凝膠纖維的紡絲溫度對其纖維樣品之Drc有明顯的關係與影響,並在一最適化條件下其纖維樣品的Drc可達到最高值。為了解上述這些有趣之現象,本研究中更進一步對凝膠纖維樣品之斷面型態、熱學等性能進行探討。
In this study, the UHMWPE (U) / CNTs (C) blends were investigated using the gel fiber specimens at different composed ratios and their drawing behavior performed in accordance with the ratios. It shows that, by different composed ratio, the critical draw ratio (Drc) of gel fiber increased in proportion to the composed ratio of CNTs. The Drc、birefringence and tensile strength of gel fiber reach the maximums when the composed ratio of CNTs reaches 0.0015wt%; and it is interesting that the critical draw ratio (Drc) of gel fiber specimens were found to depend significantly upon the spinning temperature used to prepare the fiber specimens, and the Drc value of fiber reaches the maximum when reaches the best suit value. Further investigations including surface morphology, birefringence, thermal and tensile experiments were performed on the fiber specimens to clarify the possible deformation mechanisms accounting for their interesting drawing properties found in this study.
論文摘要 I
ABSTRACT II
誌謝 Ш
目錄 IV
圖表索引 VII
一、前言……………………………………………………………………...P.1
二、文獻回顧………………………………………………………………...P.8
2.1 聚乙烯簡介…………………………………………………………..P.8
2.2 高強力聚乙烯纖維…………………………………………………..P.9
2.2.1 高強力聚乙烯纖維之製造技術…………………………….P.9
2.2.1.1 固態擠出法(solid state extrusion)………………P.9
2.2.1.2 超延伸法(ultradrawing)………………………...P.10
2.2.1.3 區域延伸法(zone drawing)……………………P.11
2.2.1.4 表面成長法(surface growth method)…………P.12
2.2.1.5 凝膠紡絲法(gel spinning)…………………….P.14
2.2.2 UHMWPE使用凝膠紡絲技術得到高強力纖維原因…….P.15
2.2.3 UHMWPE凝膠紡絲的技術要點………………………….P.16
2.3 熱拉伸對凝膠原絲形態和結構的影響…………………………....P.18
2.3.1 型態和力學性質…………………………………………...P.18
2.3.2 熱性能……………………………………………………...P.18
2.3.3 聚集態結構………………………………………………...P.19
2.4 奈米碳管簡介……………………………………………………...P.20
2.4.1 奈米碳管結構……………………………………………P.20
2.4.2 奈米碳管特性……………………………………………P.21
2.4.3 奈米碳管純化……………………………………………P.22
2.4.3.1 氧化法………………………………………….P.22
2.4.3.2 過濾法………………………………………….P.23
2.5 奈米碳管/高分子複合材料………………………………………..P.24
2.5.1 奈米碳管/高分子複合材料簡介………………………...P.24
2.5.2 具方向性排列之奈米碳管/高分子複合材料…………...P.25

三、實 驗………………………………………………………………….P.32
3.1 UHMWPE/奈米碳管凝膠纖維的製備…………………………….P.32
3.1.1 凝膠溶液的製備………………………………………….P.32
3.1.2 凝膠紡絲條件與流程…………………………………….P.33
3.1.3 凝膠纖維的熱延伸……………………………………….P.34
3.2 凝膠溶液剪切黏度分析……………………………………………P.36
3.3 凝膠纖維可延伸性質測定…………………………………………P.37
3.4 凝膠纖維分子順向度檢測…………………………………………P.38
3.5 凝膠纖維表面形態分析……………………………………………P.39
3.6 凝膠纖維熱學性質分析……………………………………………P.40
3.7 凝膠纖維抗張性質分析……………………………………………P.41



四、結果與討論…………………………………………………………….P.42
4.1 凝膠溶液剪切黏度分析……………………………………………P.42
4.2 凝膠纖維熱學性質分析……………………………………………P.45
4.3 凝膠纖維可延伸性質測定…………………………………………P.50
4.4 凝膠纖維分子順向度檢測…………………………………………P.53
4.5 凝膠纖維表面形態分析……………………………………………P.60
4.6 凝膠纖維抗張性質分析……………………………………………P.63

五、結 論 ………………………………………………………………..P.74

六、參考文獻 …………………………………………………………...P.76

作者簡介………………………………………….……………….………P.80
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