以水玻璃为硅源制备纳米孔超级绝热材料

Nano-porous Super Thermal Insulation Materials Prepared by Water Glass as Silicon Source

采用廉价的水玻璃为硅源,通过溶胶凝胶法,用离子交换树脂除去钠离子,并进行溶剂替换,用三甲基氯硅烷进行表面修饰,采用常压干燥,制备出具有纳米多孔结构的SiO2 超级绝热材料,并用扫描电镜、孔径分布测试仪等对其结构进行表征。

Nano-porous silica aerogel insulation material are prepared by sol-gel method using cheap price water glass as silicon source. In the preparation of silica aerogel , sodium ion is removed by ion-exchange resin, the surface is modified by trimethylchlorosilane and then is dried at ambient pressure. The morphology and pore structure of the silica aerogels are characterized by SEM and pore size distribution measurement instruments.