疏水疏油二氧化硅增透膜的制备

以正硅酸乙酯为前驱体，氨水为催化剂，采用溶胶-凝胶法，结合全氟辛基癸烷三甲氧基硅烷（FAS）自组装对膜层表面改性，制备了疏水疏油二氧化硅增透膜．采用红外光谱仪，分光光度计，扫描探针显微镜，椭偏仪，静滴接触角测量仪，抗油污染能力测试等技术对膜层性质进行了分析．结果表明：疏水疏油增透膜的峰值透光率为99．8％；与水的接触角为118．0°，与二甲基硅油的接触角达到74．5°；在抗油污染能力测试中，疏水疏油增透膜的抗油污染能力较常规增透膜大大增强．

Preparation of Hydro-oleophobic Silica Antireflective Coating

Using tetraethoxylsilane as precursor, ammonia as catalyst, the hydro-oleophobic antireflective coating was prepared by sol-gel process along with fluoroalkylsilane self-assembly. The properties of the coatings were characterized with spectrophotometer, scanning probe microscope, spectroscopic ellipsometry, contact angle measurement and oil-resistant test. The results indicate that the peak transmittance of the hydro-oleophobic coatings is 99.8%, water contact angle is 118.0°, and polydimethyl siloxane oil angle is 74.5°. The oil-resistant test shows that the oil-resistant ability of the hydro-oleophobic silica antireflective coating is considerably improved compared with that of the common silica antireflective coating.