紫外光固化聚丙烯酰/SiO_2有机/无机杂化气凝胶制备  

Synthesis of poly(MPMS-SSO) organic/inorganic hybrid aerogel by ultra-violet cure

作　　者：任洪波[1] 毕于铁[1] 秦元成[1] 尚承伟[1] 张林[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《强激光与粒子束》2009年第1期83-86,共4页High Power Laser and Particle Beams

基　　金：高温高密度等离子体国家重点实验室基金资助课题(9140C6806020609);国家高技术发展计划项目;中国工程物理研究院发展基金资助课题(2008A0302014)

摘　　要：采用自制的甲基丙烯酰多羟基倍半硅氧烷制备了UV固化的有机／无机杂化湿凝胶。湿凝胶经CO2超临界干燥后即得到相应的杂化气凝胶，气凝胶经场发射扫描电子显微镜，高分辨透射电镜分析表明：构成气凝胶3维珍珠链结构的骨架的颗粒尺寸为20-30nm，骨架上具有5～10nm的孔洞结构，骨架颗粒有机、无机组分间没有明显的相界面。气凝胶的比表面积、吸附特性和微观孔结构采用经典的N2吸附法获得，结果表明气凝胶比表面积为520．9m^2／g，孔洞结构主要由50nm以下的介孔所构成。A procedure of synthesis of organic/inorganic hybrid wetgels derived from methacryloxypropyltrimethoxysilane based silsesquioxane（MPMS-SSO） by ultra-violet ray（UV） cure was demonstrated. Hybrid aerogels were obtained through CO2 supercritical fluid drying process. The as-synthesized aerogels were characterized by field-emission scanning electron microscopy （SEM）, high resolution transmission electron microscopy（TEM）, Brunauer-Emmett-Teler （BET）. The field-emission SEM mi- crograph shows that, the aerogels are made up of 3-D pearl-necklace like tangling networks and the diameters of the backbone par- ticles are of 20-30 nm. The high resolution TEM micrograph indicates that there are some holes with diameters about 5-10 nm in backbone. The BET results reveal that the aerogel specific surface area is 520.9 m^2/g and the pore sizes for 80% of the total pores are mainly in 5-10 nm and 15-35 nm, which indicate that meso-pores are dominant and macro-pores are far less.

关 键 词：ICF靶 杂化 气凝胶 紫外光固化 

分 类 号：TL69[核科学技术—核技术及应用]