In order to improve the bonding effect of optical films,the preparation and interfacial bonding properties of sol-gel optical films are studied.The ZnO optical films are prepared with zinc acetate dihydrate as raw material by sol-gel method.The glass substrate,silicon dioxide sub-strate and Al2O3 substrate are selected respectively when preparing the films.Through the adhesive strength and tensile strength,it is verified which substrate could obtain the ideal interface bonding performance;To improve the film effect,the butyl titanate with mass fractions of 0.4％,0.8％,1.2％,and 1.6％are added respectively,and the effects of butyl titanate and treatment temperature on the film adhesion performance are verified.The exper-imental results show that the peel strength of optical film is higher after using Al2O3 substrate,and greater tensile force is required to break the inter-face adhesive film.High temperature treatment(above 50 ℃)can reduce the interfacial adhesion performance of optical films.Using butyl titanate with a mass fraction of 1.2％can obtain the optical films with higher peel strength and tensile strength,resulting in more ideal interfacial adhesion performance.
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