聚氨基甲酸酯彈性體/黏土奈米複合材料之製備與物性研究

Preparation and Physical Properties of Polyurethane Elastomer / Clay Nanocomposite Materials

林宏益(Hung-I Lin)

指導教授 ： 葉瑞銘

中原大學/理學院/化學研究所/碩士(2003年)

https://doi.org/10.6840/cycu200300360

摘要

本論文是利用poly(oxypropylene) glycol (PPG)、diisocyanate (TDI)及鏈延伸劑來製備彈性體。進一步是將親油化改質過後的PK802黏土加入，再以電磁攪拌使之混合均勻，將此混合物抽真空狀況下去除氣泡後，即可得到PU/clay複合材料。 在本研究中，將探討此奈米級複合材料其阻氣、阻水與機械性質。 研究顯示當親油化蒙脫土的比例增加時，其阻氣、阻水、機械性質及防蝕性也會隨之提升。 其次由熱失重分析儀(TGA)及微差掃描熱量計(DSC)的結果得知，親油化蒙脫土的添加可提高高分子之熱失重溫度 (Td) 及玻璃轉換溫度(Tg)。

關鍵字

黏土 ； 聚氨基甲酸酯 ； 奈米複合材料

並列摘要

In this thesis, a series of nanocomposite materials consist of organic polyurethane (PU) and inorganic clay nanolayers were prepared. The PU used are based on polyether polyol, diisocyanate and chain extender. The as-synthesized PU-Clay nanocomposite materials were subsequently characterized by Fourier-Transformation Infrared (FT-IR) spectroscopy, wide-angle powder X-ray diffraction (XRD) and transmission electron microcopy (TEM). Effect of the material composition on the gas barrier, thermal stability, mechanical strength, contact angle and corrosion protection of PU and nanocomposite materials, in the form of both free-standing film and coating, were studied by gas permeability analyzer (GPA), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), dynamic mechanical analyzer (DMA), contact angle measurement and electeochemical corrosion evaluation, respectively.

並列關鍵字

clay ； polyurethane ； nanoconposite

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