【摘要】 分析了蛭石精矿和膨胀蛭石的组成和结构 ,用十六烷基三甲基溴化铵 (CTAB)进行了有机化处理 ,再通过熔融或溶液混合插层苯并 口恶 嗪树脂制备了苯并 口恶 嗪树脂插层蛭石纳米复合材料 ,并采用蒙脱土进行了对照实验。结果表明 :蛭石精矿是由蛭石、水金云母及金云母所组成。有机化处理使蛭石晶层的d0 0 1由 1.46nm增加到 2 .6 7nm ,并出现二级衍射峰d0 0 2 =1.34nm。苯并 口恶嗪树脂插层后 ,蛭石层间距进一步增大 ,插层效果优于蒙脱土 ,而水金云母层间距没有变化 ;复合物固化后 ,有机化蛭石和水金云母的特征峰都消失了 ,表明形成了苯并 口恶嗪 /蛭石纳米复合材料更多还原

【Abstract】 Polybenzoxazine-vermiculite nanocomposites were prepared from two kinds of polybenzoxazine precursors and two kinds of organically modified-vermiculite minerals which were consisted of vermiculite ,hydrobiotite and phlogopite. After treatment of vermiculite minerals by hexadecyl trimethylam monium bromide(CTAB), the d 001 of vermiculite layers of vermiculite mineral increased from 1.43?nm to 2.67?nm and developed d 002=1.34?nm. After organically modified vermiculite intercalated with a polybenzoxazine precursor ( bisphenol A type), The d 001 of vermiculite layers increased from 2.67?nm to 3.63?nm further and developed d 002=1.82?nm and d 003=0.91?nm. It was showed that the polybenzoxazine precursor has intercalated into vermiculite layers. Cured the composites, the diffraction peak of vermiculite d 001 in XRD spectrum vanished and the vermiculite layers were exfoliated.更多还原