Abstract
To improve the hydrolytic stability of the silane at the interface, di-methacrylate silane was designed, and its hydrolytic stability was examined.
Before hydrolytic degradation, the di-methacrylate silane gave a higher bond strength of the resin against the silane-treated silica surface than γ-methacryloxypropyltrimethoxysilane. However, when the specimen was immersed in hot water, the bond strength decreased markedly. The failure mechanism changed from cohesional failure to interfacial failure. The hydrolytic stability of the di-methacrylate silane was much worse than γ-methacryloxypropyltrimethoxysilane because of strict hindrance of the organic group in the silane molecule. The bond strength was measured, after the specimens were immersed in hot water and dried up at room temperature. The bond strength increased and failure mechanism changed from interfacial failure to cohesional failure of resin.
