The effect of organo-functional silanes on the adhesion of epoxide resins to ITO glass

摘要

In this study we investigated five different types of organo-functional silanes containing vinyl,epoxy,amino,methacrylic and acrylic groups in the cationic polymerization of epoxide resin and studied their effects on epoxide adhesion strength to indium tin oxide(ITO)substrate via a pull test.The adhesion strength of epoxide resins was found to be in the order vinyl > methacrylic > acrylic > epoxy > amino.The silane containing vinyl group enhanced the adhesion strength,since it was able to promote free-radical polymerization.As to the silane containing amino group,it retarded the photo-polymerization of cationic photoinitiator in the resin and thus the lowest adhesion strength was observed.It was found that the resin sample containing 1 wt% of vinyl group silane possessed the highest adhesion strength of 91.42 kg/cm~2 to ITO glass.An excessive amount of silane added in the resin generated too much H_2O that diluted the concentration of resin and deteriorated the adhesion strength.