【摘要】 聚合物粘土纳米复合材料从分子尺度上增强材料性能 ,使其具有优良的阻隔性能、阻燃性能和力学性能 ,从而成为一种令人注目的新材料。为使粘土在聚合物中在分子水平上均匀分散 ,我们通过大的聚核TiO2阳离子对粘土进行柱撑 ,小角XRD、BET以及TG DTG等测试手段表明皂土经TiO2 聚阳离子柱化后 ,热稳定性明显增强 ,在空气中 5 0℃干燥比表面积为 2 0 2m2 g ,经 5 0 0℃煅烧后为 183m2 g ,远远大于未柱化的原皂土 (11m2 g) ,这些性能的改善有利于获得性能更为优越的聚合物粘土纳米复合材料更多还原

【Abstract】 Polymer/nano-clay composites have better barrier properties, fire resistance and higher mechanical properties since nano-caly particles were reinforcing the composites on a molecular scale. Titanium pillared clay was made by introducing polymeric titanium oxide cations into the bentonite structure by cation exchange. They were characterized by surface area, small angle X-ray diffraction, and thermal analysis. The results show that thermal stability of the TiO 2-PILC is significantly increased. BET surface area of TiO 2-PILC dried at 50℃ in air for 12h is 202m 2/g, that of TiO 2-PILC calcinated at 500℃ for 12h is 183m 2/g, which are much larger than that of unpillared bentonite(11m 2/g).更多还原