材料工程2018，Vol.46Issue(2)：22-26,5.DOI:10.11868/j.issn.1001-4381.2016.000958
超临界干燥制备PSNB气凝胶及其超疏水性能研究
Preparation and Hydrophobic Properties of Polyborosilazane Aerogels via CO2 Supercritical Drying
摘要
Abstract
The polyborosilazane aerogels were prepared by hydrosilylation reaction using polyborosi-lazane as raw material with divinylbenzeneas crosslinking agent ,and then dried by CO2 supercritical drying .Infrared spectroscopy ,scanning electron microscopy ,specific surface area and aperture analy-zer ,contact angle measurement were used to characterize the formation ,microstructure and hydropho-bic property of polyborosilazane aerogels .The results show that the polyborosilazane aerogels are pre-pared by hydrosilylation reaction using polyborosilazane with divinylbenzene ;the specific surface areas of the resultant aerogels with three-dimensional network structure are in the range of 307-458cm2/g , which is a mesoporous material with superhydrophobic property .The pore volume is in the range of 1 .20-2 .17cm3/g and pore size is in the range of 2 .0-100nm ,and when the volume fraction of the start-ing solvent is 85％ ,the hydrophobic performance of polyborosilazane aerogels is the best ,the water contact angle is 151 .5°.关键词
聚硼硅氮烷/硅氢加成反应/气凝胶/二氧化碳超临界干燥/疏水性Key words
polyborosilazane/hydrosilylation reaction/aerogel/CO2 supercritical drying/hydrophobic property分类
化学化工引用本文复制引用
刘洪丽,邓青沂,褚鹏..超临界干燥制备PSNB气凝胶及其超疏水性能研究[J].材料工程,2018,46(2):22-26,5.基金项目
国家自然科学基金资助项目(51472175) （51472175）
天津市应用基础与前沿技术研究计划重点资助项目(15JCZDJC37200) （15JCZDJC37200）
