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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and properties of polyimide-clay nanocomposite materials for anticorrosion application
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Preparation and properties of polyimide-clay nanocomposite materials for anticorrosion application

机译：防腐用聚酰亚胺-粘土纳米复合材料的制备与性能

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摘要

A series of polymer-clay nanocomposite (PCN) materials that consist of organosoluble polyimide and layered montmorillonite clay were prepared by the solution dispersion technique. The organosoluble polyimide containing non-coplanar moiety in diamine monomer and flexible bridging linkages in dianhydride monomer was synthesized by chemical imidization. The as-synthesized PCN materials were characterized by infrared spectroscopy, wide-angle powder X-ray diffraction, and transmission electron microscopy. The organosoluble polyimide showed better corrosion resistance compared to polyaniline, poly(o-ethoxyaniline) and poly(methyl methacrylate) by using a series of standard electrochemical corrosion measurements of corrosion potential, polarization resistance, and corrosion current in 5 wt % aqueous NaCl electrolyte. Polyimide-clay nanocomposite materials incorporated with low loading of clay were found to further improve corrosion inhibition over pure polyimide. Effects of the material composition on the O-2/H2O molecular permeability, optical clarity, and thermal properties of polyimide-clay nanocomposite materials were studied by molecular permeability analysis, UV-visible transmission spectra, thermogravimetric analysis, and differential scanning calorimetry, respectively. (C) 2004 Wiley Periodicals, Inc.
机译：通过溶液分散技术制备了一系列由有机可溶性聚酰亚胺和层状蒙脱土组成的聚合物黏土纳米复合材料。通过化学亚胺化合成了二胺单体中具有非共面部分且二酐单体中具有柔性桥联键的有机可溶性聚酰亚胺。合成后的PCN材料通过红外光谱，广角粉末X射线衍射和透射电子显微镜进行表征。通过在5 wt％的NaCl水溶液中使用一系列标准的电化腐蚀腐蚀电位，耐极化性和腐蚀电流的标准电化学腐蚀测量方法，与聚苯胺，聚（邻乙氧基苯胺）和聚甲基丙烯酸甲酯相比，有机可溶性聚酰亚胺显示出更好的耐腐蚀性。发现掺入低含量粘土的聚酰亚胺-粘土纳米复合材料比纯聚酰亚胺可进一步改善腐蚀抑制。分别通过分子渗透率分析，紫外-可见透射光谱，热重分析和差示扫描量热法研究了材料组成对聚酰亚胺-粘土纳米复合材料的O-2 / H2O分子渗透性，光学透明度和热性能的影响。 （C）2004年Wiley Periodicals，Inc.

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