高等学校化学学报

高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (05): 897.doi: 10.3969/j.issn.0251-0790.2012.05.006

• 研究论文: 无机化学 • 上一篇    下一篇

耐环境性SiO2/SiO2-TiO2 增透膜的设计与制备

叶龙强, 张欣向, 肖波, 业海平, 江波   

  1. 四川大学化学学院, 绿色化学与技术教育部重点实验室, 成都 610064
  • 收稿日期:2011-07-27 出版日期:2012-05-10 发布日期:2012-05-10
  • 作者简介:江 波, 男, 博士, 教授, 博士生导师, 主要从事功能高分子材料研究. E-mail: jiangbo@china.com
  • 基金资助:

    中央高校基本科研业务费(批准号: 2010SCU23003)资助.

Design and Preparation of SiO2/SiO2-TiO2 Antireflective Coating with Excellent Environmental Resistance

YE Long-Qiang, ZHANG Xin-Xiang, XIAO Bo, YE Hai-Ping, JIANG Bo   

  1. Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
  • Received:2011-07-27 Online:2012-05-10 Published:2012-05-10

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摘要： 根据膜层设计理论设计出以K9玻璃为基体的耐环境性的双层增透膜, 这种增透膜在特定波长处具有超高的透过率. 以盐酸为催化剂, 分别以正硅酸乙酯和钛酸丁酯为前驱体制备了SiO2和TiO2溶胶, 将SiO2和TiO2溶胶按一定比例混合得到SiO2-TiO2复合溶胶. 通过改变复合溶胶中SiO2的含量调节复合膜的折射率, 通过改变提拉速度控制薄膜的厚度. 实验结果表明, 双层增透膜在550 nm处的透过率达到99.9%. 增透膜经较强机械摩擦后峰值透过率基本保持不变, 表明该增透膜具有优良的耐摩擦性. 进一步采用六甲基二硅氮烷对增透膜表面进行修饰, 修饰后增透膜的接触角增大至98.3°, 增透膜的疏水性及环境稳定性得到较大提高.

关键词: 膜层设计, 耐环境性, 耐摩擦性, 双层增透膜, 高透过率, 六甲基二硅氮烷

Abstract: Double-layer antireflective(AR) coatings on K9 glass with excellent environmental resistance and abrasion-resistance were designed and prepared. Using tetraethylorthosilicate(TEOS) and titanium tetraisopropoxide(TTIP) as precursor, respectively, SiO2 and TiO2 sols were prepared via sol-gel process with hydrochloric acid as catalyst. SiO2-TiO2 composite films were prepared by mixing the SiO2 and TiO2 sols and then dip-coating on the substrates. The refractive indices of the composite films were controlled by adjusting the SiO2/TiO2 ratio and the thickness was controlled by adjusting the dip-coating speed. It was found that the maximum transmittance of the double-layer AR coatings reached 99.9% and could be adjusted to match a specific wavelength. The transmittance did not decrease after abrasion test, indicating an excellent abrasion-resistance of the AR coating. Hydroxyl terminated hexamethyldisiloxane(HMDS) treatment was further performed to improve the hydrophobicity, the environmental resistance and durability of the AR coatings.

Key words: Thin film design, Environmental resistance, Abrasion-resistance, Double-layer antireflective coating, High transmittance, Hexarnethyldisiloxane(HMDS)

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