采用共混法和溶胶-凝胶法制备了纳米SiO2有机杂化膜,考察了制备方法和SiO2的性质对杂化膜结构和性能的影响。结果表明:采用溶胶-凝胶技术制备的杂化膜同共混法得到的杂化膜及未杂化膜相比,机械性能明显提高,膜微观结构改善,并表现出良好的气体分离性能。此外,杂化膜中无机相的负载量也是一个影响杂化膜结构和性能的重要因素,当正硅酸乙酯的添加量为30%(wt)时,杂化膜的综合性能较为理想。 Nano-SiO2 organic hybrid films were prepared by blending method and sol-gel method. The effects of preparation methods and properties of SiO2 on the structure and properties of hybrid films were investigated. The results show that the hybrid membranes prepared by sol - gel technology have better mechanical properties, better microstructure and better gas separation performance than the hybrid membranes and unparalled membranes. In addition, the loading of the inorganic phase in the hybrid membrane is also an important factor affecting the structure and properties of the hybrid membrane. When the amount of tetraethyl orthosilicate is 30% (wt), the overall performance of the hybrid membrane is better.