Ishida S, Nishiyama N
Shika Zairyo Kikai. 1989 Sep;8(5):601-7.
The mechanism of the hydrolytic deterioration of the silane coupling agent layer on silica filler of composite resin was examined. As a result of the desorption of the absorbed silane molecules, the contact angle between water drop and the silica plate treated with the silane coupling agent decreased when the plate was soaked in hot water and the rate of the decrease in the contact angle leveled off with an increase in the concentration of the silane coupling agent solution. With an increase in the soaking time in hot water, the strength of adhesion of poly (BIS-GMA) to the silica treated with the silane coupling agent decreased and the position of the fracture shifted from the matrix resin (adherend failure) to the silane coupling layer (adhesion failure). The time when the adhesion failure took place depended on the concentration of the silane coupling agent solution and there was the optimum concentration for water-resistant adhesion.
研究了复合树脂二氧化硅填料上硅烷偶联剂层的水解劣化机理。由于吸附的硅烷分子解吸，当硅烷偶联剂处理过的硅板浸泡在热水中时，水滴与硅板之间的接触角减小，且接触角的减小速率随着硅烷偶联剂溶液浓度的增加而趋于平稳。随着在热水中浸泡时间的增加，聚（双酚A缩水甘油醚甲基丙烯酸酯）与硅烷偶联剂处理过的二氧化硅之间的粘附强度降低，断裂位置从基体树脂（粘附体破坏）转移到硅烷偶联层（粘附破坏）。发生粘附破坏的时间取决于硅烷偶联剂溶液的浓度，并且存在耐水粘附的最佳浓度。
