| 碱/酸两步催化法制备耐候性SiO2增透膜的研究 |
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| 引用本文： | 业海平,张欣向,肖 波,晏良宏,江 波.碱/酸两步催化法制备耐候性SiO2增透膜的研究[J].无机化学学报,2011,27(5):823-827. |
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| 作者姓名： | 业海平 张欣向 肖 波 晏良宏 江 波 |
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| 作者单位： | 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
2. 中国工程物理研究院激光聚变研究中心,绵阳,621900 |
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| 基金项目： | 四川大学中央高校基本科研业务(No.2010SCU23003)资助项目 |
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| 摘 要： | 以正硅酸乙酯(TEOS)为先驱体,采用碱/酸两步催化溶胶-凝胶法制备出一种兼具碱催化增透膜的高透过率和酸催化增透膜的良好耐摩擦性能的优点的SiO2增透膜。对酸碱催化SiO2相对比例及酸催化时水含量的系统研究表明,当酸催化SiO2的含量为50%时,增透膜综合性能最好,即具有高透过率和高耐摩擦性;当nH2O/nHCl=1∶0.0010时,增透膜的透过率最高。碱/酸两步催化法制备的增透膜与水的接触角仅为11.3°,本文进一步用六甲基二硅氧烷(HMDS)对增透膜表面进行了修饰,修饰后增透膜的接触角提高至52.5°,增透膜的疏水性及环境稳定性得到较大的提高。
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| 关 键 词： | 碱/酸两步催化 溶胶-凝胶法 六甲基二硅氧烷 耐候性 |
Preparation and Characterization of Environment-Resistant Silica Antireflective Coating by Base/Acid Two-Step Catalyzed Sol-Gel Process |
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| YE Hai-Ping,ZHANG Xin-Xiang,XIAO Bo,YAN Liang-Hong and JIANG Bo.Preparation and Characterization of Environment-Resistant Silica Antireflective Coating by Base/Acid Two-Step Catalyzed Sol-Gel Process[J].Chinese Journal of Inorganic Chemistry,2011,27(5):823-827. |
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| Authors: | YE Hai-Ping ZHANG Xin-Xiang XIAO Bo YAN Liang-Hong and JIANG Bo |
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| Institution: | Key Laboratory of Green Chemistry & Technology(MOE), College of Chemistry, Sichuan University, Chengdu 610064, China,Key Laboratory of Green Chemistry & Technology(MOE), College of Chemistry, Sichuan University, Chengdu 610064, China,Key Laboratory of Green Chemistry & Technology(MOE), College of Chemistry, Sichuan University, Chengdu 610064, China,Research Center of Laser Fusion, China Academy of Engineering Physical, Mianyang, Sichuan 621900, China and Key Laboratory of Green Chemistry & Technology(MOE), College of Chemistry, Sichuan University, Chengdu 610064, China |
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| Abstract: | Antireflective(AR) coatings with high transmittance and abrasion-resistance were prepared by a two-step base/acid catalyzed sol-gel process using tetraethylorthosilicate(TEOS) as precursor.It was found that addition of 50% acid-catalyzed SiO2 in the sol afforded the AR coatings relatively high transmittance and enhanced abrasion-resistance.It provided the AR coating with highest transmittance while the mole ratio of nH2O/nHCI was 1∶0.001 0.The water contact angle of base/acid two-step catalyzed AR coating was 11.3°,in this work,hexamethyldisiloxane(HMDS) was further used to modify the hydrophobicity of AR coatings.After HMDS treatment,the hydroxyl groups of AR coating were replaced by-OSi(CH3)3,which greatly increases the hydrophobicity of the coating,affording HMDS modified AR coating excellent environment resistance. |
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| Keywords: | base/acid two-step process sol-gel hexamethyldisiloxane environment-resistance |
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