用质子化的2,4,6-三(二甲氨基甲基)苯酚(DMP-30)通过阳离子交换反应对原始粘土进行修饰,采用一种与新的制备方法——“湿粘土加入法”合成了环氧树脂/粘土纳米复合材料.透射电镜(TEM)观察显示,粘土片层以3～5片为聚集单元均匀、无规地分布在整个环氧树脂的基体中,呈现高度、无规剥离形态.利用X射线衍射(XRD)跟踪了粘土片层在复合材料制备过程各阶段的分散状况,初步阐明了粘土片层在环氧树腊中的剥离机理:粘土片层在固化反应之前已经实现了在环氧预聚体中的剥离.有机改性剂带有的亲水基团及能与环氧树脂反应的叔胺基对形成剥离结构纳米复合材料有决定性作用.
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