English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 55176/89445 (62%)
造訪人次 : 10659017      線上人數 : 15
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    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/987654321/34897


    題名: 丁基乳膠奈米黏土複合材料之製備與物性探討
    其他題名: A study on preparation and properties of Butyl Latex/Nano-clay Composites
    作者: 趙之晟;Chao, Chiz-cheng
    貢獻者: 淡江大學化學工程與材料工程學系碩士班
    林國賡;Lin, Gwo-geng
    關鍵詞: 丁基乳膠;奈米球磨機;奈米丁基橡膠複合材料;矽酸鹽層黏土;乳化摻混;共凝聚法;Isobutylene-isoprene rubber latex;Nanocomposites;silicates;emulsion blending;co-coagulating
    日期: 2007
    上傳時間: 2010-01-11 05:44:46 (UTC+8)
    摘要: 本研究對丁基乳膠摻混奈米級黏土,使奈米黏土於橡膠機材中,達到奈米級分散即剥層(exfoliation)或插層(intercalation)之結構,故將利用奈米球磨機先將奈米黏土乳化分散再分別以乳膠法(Emulsion)與共凝聚法(Co-coagulation)的方式製備丁基橡膠之奈米黏土複合材料,最後將複材進行加硫得到奈米橡膠成品。
    研究之基材為丁基橡膠,運用丁基橡膠乳膠進行乳化摻混實驗,再以XRD、TEM分析黏土之分散性,發現乳膠法與共凝聚法所得之複材結構不同,另以DMA、TGA測定其在不同黏土與相容劑比例下的熱性質改變,再利用透氣性分析儀分析阻氣性提升率,其中以乳膠法制備丁基橡膠複材(EmR-5)於DMA檢測Tg為-24.76oC,下降約 3 oC是由界面活性劑造成潤滑作用,熱分解溫度為(Td) 342 oC,Td值上升19oC可歸咎於黏土分散性佳,阻絕氧氣進入材料之入徑,而以共凝聚法製備上,其Tg及Td並無顯著改變顯示出黏土分散性不佳。最後,利用萬能拉力機比較各樣品機械性質的提升,以乳膠法製備之奈米橡膠其硬度測試較純料提高20%,而拉力提升約2倍。
    Isobutylene–isoprene rubber (IIR) latex and layer silicate (Na+-MMT) were prepared by latex and co-coagulating methods. The mode of dispersion of layered silicates in these nanocomposites was investigated by transmission electron microscopy (TEM) and X-ray diffraction (XRD). TEM images demonstrate partially exfoliated and intercalated via latex method, and purely intercalated via co-coagulating method. Furthermore, the surfactant played an important role for interlayer distance in IIR via latex method. Especially, nanocomposites prepared via latex method could increase the interlayer d-spacing after curing process.

    In addition, the tensile and thermal properties of IIR/silicates nanocomposites were much higher than that of the neat IIR. And, the tensile properties and decomposition temperature of the IIR/silicates nanocomposites (EmR-5) increased by 200% and 20oC, respectively. The gas barrier properties of the nanocomposites (EmR-10) decreased by 50%. Finally, a remarkable improvement of the tensile properties was observed for the IIR/clay nanocomposites (via co-coagulating method) only if the loading of the silicate is greater than 10 phr.
    顯示於類別:[化學工程與材料工程學系暨研究所] 學位論文

    文件中的檔案:

    檔案 大小格式瀏覽次數
    0KbUnknown503檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

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