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低折射率疏水SiO2薄膜的制备和表征

Hongyi JIANG, Wei ZHENG,Ou HAI,Ming LI,Dong XU

Journal of Materials Science and Engineering（2017）

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Abstract
为了制备低折射率疏水SiO2薄膜,将正硅酸乙酯(TEOS)和二甲基二乙氧基硅烷(DDS)在碱性条件下共水解缩聚,再以六甲基二氮硅烷(HMDS)做进一步的改性,采用提拉浸渍工艺在玻璃基底上制备单层增透膜.通过对溶胶粘度随老化时间的变化规律及HMDS添加对薄膜接触角影响等的分析与研究,制备了接触角最大的低折射率薄膜;同时对薄膜的红外特性、透过率、折射率进行了表征.结果表明:TEOS和DDS共水解缩聚提高了膜层疏水性,经HMDS改性后,薄膜的接触角为149°,折射率为1.12.
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Key words
sol-gel,hydrophobic,refractive index,modification
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