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) 。
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).
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2003年第6期865-868,共4页
Journal of Materials Science and Engineering
