超高分子量聚乙烯/奈米二氧化矽纖維超高延伸性質影響機理之研究

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研究生：	王文鴻 Wen-Hung Wang
論文名稱：	超高分子量聚乙烯/奈米二氧化矽纖維超高延伸性質影響機理之研究 Ultradrawing Properties of Ultra-high Molecular Weight Polyethylene / Nanosilica Fibers
指導教授：	葉正濤 Jen-taut Yeh
口試委員:	黃國賢 none 陳幹男 none 黃繼遠 none
學位類別：	碩士 Master
系所名稱：	工程學院 - 材料科學與工程系 Department of Materials Science and Engineering
論文出版年：	2011
畢業學年度：	99
語文別：	中文
論文頁數：	73
中文關鍵詞：	超高分子量聚乙烯、奈米二氧化矽、改質
外文關鍵詞：	ultrahigh molecular weight polyethylene, nanosilic, modified
相關次數：	點閱：221 下載：1
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上一筆

本研究主要針對奈米二氧化矽 (nanosilica) 及改質奈米二氧化矽(modified nanosilica) 含量對超高分子量聚乙烯 (ultrahigh molecular polyetheylenes,(UHMWPE)/nanosilica (F2Sy-170-5)及UHMWPE/ modified nanosilica (F2Smx-y-170-5) 初絲樣品的可延伸及抗張性質影響作一有系統性探討。研究發現當PE-g-MAH /nanosilica的質量比達到一最適化值6時，modified nanosilica的比表面積達到最大值。熱學性質分析發現，F2Smx-y-170-5 初絲系列樣品的熔點(Tm)和結晶度(Xc) 均分別明顯低及高於對應具相同nanosilica含量F2Sy-170-5 初絲系列樣品的Tm和Xc數值。而且，當PE-g-MAH /nanosilica的質量比達到一最適化值6時，F2Sm2-y-170-5 初絲系列樣品的Tm和Xc數值分別達到最小和最大值。值得注意的是，F2Sy-170-5和F2Smx-y-170-5纖維系列樣品的可延伸比(Dra)數值隨其內nanosilica或modified nanosilica含量分別達0.00125 及 0.001wt%數值時，對應的Dra數值均達到最大值。上述經添加最適化0.001wt%modified nanosilica之F2Smx-0.001-170-5纖維系列樣品所得之最大Dra數值，進一步隨其內PE-g-MAH/nanosilica 質量比達最適化值6時，又達另一最大值322.6。抗張性能研究進一步表明，當加入最適化的nanosilica 或modified nanosilica，延伸後的纖維樣品F2Sy-170-5和F2Smx-y-170-5 都能獲得優異的抗張性質。為瞭解上述這些有趣的現象，本研究中對純 nanosilica 和modified nanosilica 的紅外光譜及表面積分析，延伸後纖維樣品的順向度性質和延伸性進行研究。

Systemic investigation of the influence of the original and modified nanosilica contents on the ultradrawing properties of ultrahigh molecular weight polyethylene(UHMWPE)/nanosilic (F2Sy-170-5) and UHMWPE/ modified nanosilica (F2Smx-y-170-5) as-prepared fibers are reported. In a way similar to those found for the orientation factor values, the achievable draw ratios (Dra) of the F2Sy-170-5 and F2Smx-y-170-5 as-prepared fibers approached a maximum value as their nanosilica and/or modified nanosilica contents reached their corresponding optimum values. The maximum Dra values obtained for F2Smx-0.001-170-5 as-prepared fiber specimens prepared at varying maleic anhydride grafted polyethylene (PE-g-MAH)/ nanosilica weight ratios were significantly higher that of the F2S0.00125-170-5 as-prepared fiber specimen prepared at the optimum original nanosilica. Tensile property analysis further suggested that excellent orientation and tensile properties of the drawn F2Sy-170-5 and F2Smx-y-170-5 fibers can be obtained by ultradrawing the fibers prepared at their optimum original nanosilica and/or modified nanosilica contents. To understand the interesting orientation, ultradrawing and tensile properties of F2Sy-170-5 and F2Smx-y-170-5 fiber specimens, FTIR and specific surface area of the original and modified nanosilica were performed in this study.

論文摘要...................................................................................................Ⅲ
ABSTRACT	Ⅳ
誌謝	Ⅴ
目錄	Ⅵ
圖表索引	Ⅸ

第一章 前言..............................................................................................1
第二章 文獻回顧..................................................................................... 9
2.1 聚乙烯簡介....................................................................................9 2.2 高強力聚乙烯纖維........................................................................10
    2.2.1 高強力聚乙烯纖維之製造技術.............................................10
       2.2.1.1 固態擠出法（solid state extrusion）.............................10
       2.2.1.2 超延伸法（ultradrawing）.............................................11
       2.2.1.3 區域延伸法（zone drawing）........................................12
       2.2.1.4 表面成長法（surface growth method）........................13
       2.2.1.5 凝膠紡絲法（gel spinning）........................................15
    2.2.2 UHMWPE使用凝膠紡絲技術得到高強力纖維的原因.......16
    2.2.3 UHMWPE凝膠紡絲的技術要點...........................................17
  2.3 熱拉伸對凝膠原絲形態和結構的影響.......................................19
    2.3.1 型態和力學性質....................................................................19
    2.3.2 熱性能....................................................................................19
    2.3.3 聚集態結構............................................................................20
  2.4奈米二氧化矽的結構及性能...........................................21
    2.4.1奈米二氧化矽的結構.........................................................21
    2.4.2奈米二氧化矽的性質.............................................................22
    2.4.3奈米二氧化矽的分散方法......................................................22
    2.4.4奈米二氧化矽/聚乙烯複合材料相關文獻............................23

第三章 實驗
  3.1 UHMWPE/ modified nanosilica凝膠纖維的製備備…................26
3.1.1改質二氧化矽（modified nanosilica）製備..............................26
3.1.2凝膠溶液的製備......................................................................27
    3.1.3凝膠紡絲流程..........................................................................29
3.2 Nanosilica，modified nanosilica的紅外光譜測試……………...31
3.3 nanosilica，modified nanosilica的粒徑分析測試……………….32
  3.4凝膠纖維熱學性質分析.................................................................33
3.5凝膠纖維分子順向度分析.............................................................34
3.6凝膠纖維定溫熱延伸性質之測定.................................................35
  3.7凝膠纖維抗張性質分析.................................................................36

第四章 結果與討論
  4.1 nanosilica和modified nanosilica樣品的的傅立葉轉換紅外線光譜分析……………............................................................................37
   4.2 nanosilica和modified nanosilica樣品的比表面積分析................39
  4.3 UHMWPE，UHMWPE/ nanosilica及UHMWPE/ modified nanosilica初絲纖維熱學性質分析.............................................41
  4.4 UHMWPE，UHMWPE/ nanosilica及UHMWPE/ modified nanosilica纖維樣品順向度分析...................................................48
  4.5 UHMWPE，UHMWPE/ nanosilica及UHMWPE/ modified nanosilica纖維的可延伸性質........................................................50
  4.6 UHMWPE，UHMWPE/ nanosilica及UHMWPE/modified nanosilica 纖維的抗張性質...........................................................53
第五章 結論............................................................................................56
參考文獻..................................................................................................58

                                

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