Effect of solvent in 1-step self-etching adhesives on degree of conversion and long-term durability

一步自蚀刻粘合剂中溶剂对转化率和长期耐久性的影响

• 批准号: 16591904
• 负责人: IKEDA Takatsumi
• 金额: $ 2.11万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16591904/
• 关键词: adhesive system; solvent; air-drying; tensile strength

Objective. The objectives of the present study were 1) to clarify the relationship between the duration of air-drying for one-step self-etch adhesives (1-SEA) and evaporation degree (ED) of solvents, and 2) to evaluate the effect of ED on the ultimate micro-tensile strength (UTS) of the adhesives. Methods. The ED of three 1-SEA, iBond (Heraus kulzer), G-BOND (GC) and S3 BOND (kuraray), after 0, 5 and 10 sec air-drying was decided by gravimetric method. After that, the UTSs of the adhesives at ED equivalent to 0, 5 and 10 sec air-drying were evaluated. Results. EDs were increased by extension of air-drying time. As for the comparison between the adhesives, iBond showed the largest ED, and followed by G-BOND and S3 BOND. Regarding UTS, longer air-drying time resulted in larger UTS. In comparison between the adhesives, S3 BOND (HEMA containing adhesive) showed larger UTS than the other two adhesives (HEMA-free adhesives). Significance. Air-drying had a significant effect to remove solvents included in 1-SEAs and to achieve larger UTS of them. Hence, it might be crucial to remove solvents as much as possible by thorough, strong air-drying for firmly hardened adhesive layer at the interface.

客观的。本研究的目的是 1) 阐明一步自蚀刻粘合剂 (1-SEA) 的风干持续时间与溶剂蒸发度 (ED) 之间的关系，2) 评估 ED 对粘合剂最终微拉伸强度 (UTS) 的影响。方法。三种1-SEA、iBond (Heraus kulzer)、G-BOND (GC) 和S3 BOND (kuraray) 在空气干燥0、5和10秒后通过重量分析法确定ED。之后，评估粘合剂在相当于0、5和10秒风干的ED时的UTS。结果。 ED 随风干时间的延长而增加。至于粘合剂之间的比较，iBond 显示出最大的 ED，其次是 G-BOND 和 S3 BOND。对于UTS，风干时间越长，UTS越大。在粘合剂之间进行比较时，S3 BOND（含有 HEMA 的粘合剂）显示出比其他两种粘合剂（不含 HEMA 的粘合剂）更大的 UTS。意义。空气干燥对于去除 1-SEA 中包含的溶剂并获得更大的 UTS 具有显着效果。因此，通过彻底、强烈的空气干燥来尽可能去除溶剂对于界面处牢固硬化的粘合剂层可能是至关重要的。