Abstract: ［Objective］To investigate the environmental adaptability of SiO₂ antireflective（AR） coating，［Methods］acid catalytic and base catalytic SiO₂ coating were prepared on glass substrate bysol-gel method. The environmental adaptability of the prepared coating was evaluated by analyzing thechanges in their optical properties，wettability，and antifogging performance after low/high temperature cycling，ultraviolet（UV）radiation，and immersion in hydrochloric acid solution.［Results］The average transmittance of acid catalytic and base catalytic SiO₂ AR coating was 2. 2% and 5. 0% higher than thatof the bare glass in the wavelength of 380-1 100 nm. The water contact angle of acid catalytic and base catalytic SiO₂ AR coating was 4. 7° and 5. 3° . The coating had good antifogging property. After low-temperature and high-temperature cycling，the average transmittance of acid catalytic SiO₂ AR coating increased 0. 6% and 1. 1% in the wavelength of 380-1 100 nm，while the average transmittance of base catalyzed SiO₂ AR coating slight decreased. The water contact angle of SiO₂ AR coating increased after low/high temperature cycle，but still maintained good antifogging property. After UV radiation for 9 h orimmersion in hydrochloric acid solution for 60 min，the average transmittance of acid catalyzed SiO₂ AR coating increased by 0. 6% and 0. 4% in the wavelength of 380-1 100 nm，respectively，with its water contact angle increasing to 26. 5° and 17. 9°，leading to the loss of anti-fogging properties. In contrast， the average transmittance of base catalyzed SiO₂ AR coating decreased 0. 2% and 0. 1%. The water contact angle of base catalyzed SiO₂ AR coating increased slightly，and it still retained certain antifogging property.［Conclusion］Overall，the optical properties of acid catalyzed SiO₂ AR coating exhibited superior environmental adaptability，while the antifogging performance of the base catalyzed SiO₂ AR coating was less affected by the environment.

Key words: SiO₂ antireflective films, sol-gel, optical property, wettability, antifogging property

摘要： 【目的】为了研究 SiO₂减反射涂层的环境适应性。【方法】采用溶胶 -凝胶法，分别在玻璃表面制备酸催化和碱催化 SiO₂减反射涂层。通过测试涂层经过高低温循环、紫外线辐射、盐酸溶液中浸泡后的光学性能、润湿性及其防雾性能，评价减反射涂层的环境适应性。【结果】在 380~1 100 nm波段内，酸催化和碱催化 SiO₂减反射涂层平均透过率比空白玻璃高 2. 2%和 5. 0%，水接触角为 4. 7°和 5. 3°，均表现出良好的防雾性能；经低温、高温循环后，酸催化 SiO₂减反射涂层在 380~1 100 nm波段内的平均透过率分别增加 0. 6%和 1. 1%，碱催化 SiO₂减反射涂层的透过率略微下降； 2种涂层的接触角均有所上升，但仍保持较好的防雾性能。紫外线辐射 9h和盐酸溶液浸泡 60 min，酸催化 SiO₂减反射涂层在 380~1 100 nm波段内的平均透过率分别增加 0. 6%和 0. 4%，接触角分别增加到 26. 5°和 17. 9°，防雾性能丧失；而碱催化 SiO₂减反射涂层透过率降低 0. 2%和 0. 1%，接触角增幅较小，仍具有一定防雾性能。【结论】酸催化 SiO₂减反射涂层的光学性能环境适应性更优，而碱催化 SiO₂减反射涂层的防雾性能受环境影响较小。

关键词: SiO₂减反射涂层, 溶胶 -凝胶, 光学性能, 润湿性, 防雾性能

CLC Number: 

• TQ637. 4