Influence of fiber carriers on silica sol-gel coating

The sol-gel coating was prepared with cellulosic fabrics and synthetic fabrics as carriers and TEOS as precursor.The add-on of the fabrics after treatment was tested to study the influence of chemical structure,morphology and water repellent finishing of fibers on the silica coating.XPS was used to analyze the changes of element and bonding state.BET specific area,FTIR-ATR and XRD were used to characterize the surface morphology and chemical composition of fibers before and after treatment by sol-gel technique.The results showed that the chemical structure and morphology of fibers influence the add-on of silica gel on fabrics,and the adhesion of silica coatings on fabric substrates was mainly a result of dipolar-dipolar and hydrogen bond.Water repellent finishing of fibers has significant effect on the add-on of silica gel.