Through the determination of contact angle

the SiO2/HPA hybrid sol was studied by changing the kinds of silicane coupling agents

such as MTMS

ETES

and MPMS.TiO2-SiO2/HPA hybrid sol was prepared by means of surface modification of nano TiO2 with MPMS

and then the hydrophobic coating for the glass surface was prepared by the UV curing technique.The structure and properties of the coating were characterized by means of FTIR and SEM and contact angle instrument.The study showed that TiO2 modified with MPMS and silica gel modified with MTMS are completely miscibleIf modified TiO2 at a content of 0.1% was added into modified silica sol

the maximum contact angle of coating would reach 140°.Furthermore the optical performance had no visible change before and after coating the glass.