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首页> 外文期刊>Journal of Materials Science and Chemical Engineering >Improvement of Environmental Stability of the Antireflective Coating by PEG Modified SiO2 Sol
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Improvement of Environmental Stability of the Antireflective Coating by PEG Modified SiO2 Sol

机译：PEG修饰的SiO2溶胶改善抗反射涂层的环境稳定性

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As the antireflective coating prepared by sol-gel method had poor environmental stability, sol-modified method was used to improve its performance. The alkaline silica sol was prepared in ethanol solvent by using tetraethyl orthosilicate (TEOS) as precursors and aqueous ammonia as catalyst (content ~ 28%). Polyethylene glycol (PEG200) was used to modify the silica sol and the antireflective (AR) coating was prepared by dip-coating from the modified sol. The transmittance, composition, refractive index, and hydrophobicity of AR coating were discussed by combining the spectrophotometer, FTIR, Coating Wizard 32 coating design software, optical microscopy imaging system and JC2000A static droplet contact angle measurement software. Finally, the environmental stability of the AR coating was tested. The results showed that AR coating transmittance decreased by less than 0.1% after UV light for 20 hours and its transmittance decreased by about 0.57% in the humid environment for 2 months. Resistance to environmental stability has been improved.
机译：由于通过溶胶-凝胶法制备的抗反射涂层的环境稳定性较差，因此采用溶胶改性的方法来改善其性能。以原硅酸四乙酯（TEOS）为前体，以氨水为催化剂（含量约28％），在乙醇溶剂中制备碱性硅溶胶。使用聚乙二醇（PEG200）改性硅溶胶，并通过从改性溶胶浸涂制备抗反射（AR）涂层。结合分光光度计，FTIR，Coating Wizard 32涂层设计软件，光学显微镜成像系统和JC2000A静态液滴接触角测量软件，讨论了AR涂层的透射率，组成，折射率和疏水性。最后，测试了增透膜的环境稳定性。结果表明，在紫外线照射20小时后，增透膜的透射率下降不到0.1％，在潮湿环境中2个月，其透射率下降约0.57％。增强了对环境稳定性的抵抗力。

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