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首页> 外文期刊>Journal of Materials Science >Preparation and properties of montmorillonite/organo-soluble polyimide hybrid materials prepared by a one-step approach
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Preparation and properties of montmorillonite/organo-soluble polyimide hybrid materials prepared by a one-step approach

机译：一步法制备蒙脱土/有机可溶性聚酰亚胺杂化材料的制备及性能

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Montmorillonite (MMT)/organo-soluble polyimide (PI) hybrids were prepared using a one-step approach. The organo-modified MMT was dispersed in a solution of diphenylether-3, 3'4,4'-tetracarboxylic dianhydride and 4,4'-diamino-3,3'-dimethyldiphenylmethane. The solution polycondensation followed by a direct solution imidization at 180 degreesC resulted in MMT/PI hybrid solutions. From wide angle X-ray diffraction (WAXD) and transmission electron microscopy (TEM) results, the MMT is basically exfoliated in the hybrid films cast from the solutions when the MMT content is below 5 wt%. Further increase in the MMT content leads to severe aggregation. The properties of a MMT/PI hybrid are significantly dependent upon the MMT content. When the MMT content is below 6 wt%, the introduction of the MMT leads to strengthening and toughening to the PI matrix at the same time. The introduction of the MMT also results in improved thermal stability, marked decrease in coefficient of thermal expansion, slight increase in glass transition temperature and increase in modulus. (C) 2001 Kluwer Academic Publishers. [References: 34]
机译：使用一步法制备蒙脱土（MMT）/有机可溶性聚酰亚胺（PI）杂化物。将有机改性的MMT分散在二苯醚-3、3'4,4'-四羧酸二酐和4,4'-二氨基-3,3'-二甲基二苯甲烷的溶液中。溶液缩聚，然后在180℃直接酰亚胺化，得到MMT / PI混合溶液。从广角X射线衍射（WAXD）和透射电子显微镜（TEM）的结果来看，当MMT含量低于5wt％时，MMT在从溶液流延的混合膜中基本上剥落。 MMT含量的进一步增加导致严重的聚集。 MMT / PI混合体的属性很大程度上取决于MMT含量。当MMT含量低于6wt％时，MMT的引入导致同时增强和增韧PI基体。 MMT的引入还提高了热稳定性，热膨胀系数显着降低，玻璃化转变温度略有增加，模量增加。 （C）2001 Kluwer学术出版社。 [参考：34]

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