中文摘要：

在水热体系中合成了具有规则孔道结构的微孔分子筛 ZSM-5和介孔分子筛 MCM-41, SBA-15, MAS-5,通过改变材料表面的电性对介孔材料进行了化学修饰.采用X射线衍射（ XRD）和扫描电子显微镜（ SEM）对样品的结构、形貌进行了表征；通过氮气吸附-脱附测试了产物的比表面积,采用BJH法计算孔分布和孔容；将制得的样品压制成绝热材料后,进行导热性质测定.常温（25℃）常压下,有序介孔分子筛MCM-41的导热系数为0.038 W · m-1· K-1,具有少量微孔结构的 MAS-5的导热系数为0.035 W·m-1·K-1,二者均为超级绝热材料.材料经改性后,绝热性能有所提高：MCM-41的导热系数降至0.028 W·m-1·K-1, MAS-5的导热系数降至0.017 W·m-1·K-1.结合纳米介孔材料导热理论模型进行分析,发现纳米孔绝热材料的孔径越小,孔隙率越大,绝热性能好；介孔分子筛的导热系数与其孔壁厚度、孔径大小以及孔隙率有关.

英文摘要：

Microporous aluminosilicates ZSM-5 , ordered mesostructured materials MCM-41 , SBA-15 , MAS-5 were synthesized in hydrothermal system. Then, these nanoparticles were electrostatically modified with linear cationic polymer agent. The as-synthesized samples were characterized by X-ray diffraction（ XRD） , scanning electron microscopy（ SEM） and N2 adsorption-desorption isotherms. Surface area was determined by Brunauer-Emmett-Teller（ BET ） equation; pore size distribution and pore volume were measured by Barrett-Joyner-Halonda（ BJH） method. Samples for thermal conductivity measurements were prepared by pressing powders into disks. The thermal conductivity of well-ordered mesoporous MCM-41 is as low as 0.038 W·m-1 ·K-1 . The thermal conductivity of MAS-5 is 0.035 W·m-1 ·K-1 . The thermal conductivities of modified MCM-41 and MAS-5 deereased to 0.028 and 0.017 W·m-1 ·K-1 respectively. Theoretical analysis and experimental results simultaneously explain that materials with smaller pore size or higher porosity demonstrate better proper-ties of thermal insulation;thermal conductivities of ordered mesoporous materials associate with wall thickness, pore size and porosity.