Preparation and Properties of Superhydrophobic Glass by Sol-Gel Method
Glass is susceptible to contamination due to its hydrophilic surface,which limits its application.The ethyl silicate(TEOS)was mixed with ammonia and ethanol in a certain proportion to prepare SiO2 sol,which was sprayed on the surface of the glass,and then the surface was modified by the low surface energy substance octadecyl trichlorosilane(ODTS),and the glass with super hydrophobic properties was successfully prepared.Scanning electron orbit microscope(SEM)and contact angle measuring instrument were used to characterize the surface morphology and wettability of the prepared glass.The results showed that the surface roughness of the superhydrophobic glass was greatly increased,and the contact angle to water was 158° and the rolling angle was 6°,showing excellent hydrophobicity.The self-cleaning experiment showed that the superhydrophobic glass prepared by this method had excellent self-cleaning performance.In addition,the heat resistance experiment showed that its hydrophobicity did not change greatly,and it had excellent high temperature resistance performance.The superhydrophobic surface prepared by this method has good application.
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