摘要
以2,4,6-三(二甲胺基甲基)苯酚(DMP-30)作为插层剂,采用阳离子交换法对钠基蒙脱土进行了有机改性;研究了DMP-30与盐酸的摩尔比对蒙脱土有机改性效果的影响;采用SEM、TEM、IR和XRD等对样品的微观形貌和结构进行了表征。结果表明:DMP-30与盐酸的摩尔比对蒙脱土有机改性具有明显的影响,在合适的摩尔比(1∶2)时,DMP-30分子插入到蒙脱土片层间,片层间距由1.34 nm增加至1.81 nm。对改性后蒙脱土与环氧基体的复合效果进行了研究,结果显示,复合材料中蒙脱土的d001衍射峰消失,表明有机改性蒙脱土在环氧树脂基体中得到了充分剥离。
Na-montmorillonite was organically modified by the cationic exchange method using 2, 4, 6-tris-（dimethylaminomethyl） phenol （DMP-30） as the modifier. The influence of the molar ratio of DMP-30 to HCI was stu- died on the organic treatment of Na-montmorillonite. The morphologies and structures of the as-obtained samples were characterized by SEM, TEM, IR and XRD. The results show that at a proper molar ratio （1：2） of DMP-30 to HCI, the DMP-30 molecules are successfully intercalated into the layers of montmorillonite, and the space of organically modified montmorillonite layers increases from 1.34 nm to 1.81 nm. Nanocomposites were prepared by the in situ polymerization of epoxy resins in the presence of the organo-modified montmorillonite （OMMT）. The structure of the nanocomposites was studied by XRD. The d001 peak of the organic montmorillonite disappeared, indicating that the organo-modified montmorillonite was completely exfoliated in the epoxy matrix.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2007年第2期50-54,共5页
Acta Materiae Compositae Sinica
基金
中国科学院海外杰出学者基金(2005-01-03
2005-02-01)
