光/湿双固化聚氨酯粘接剂制备 及在树脂粘接中的性能研究

王辉

摘 要：文章通过制备口腔领域所应用的丙烯酸酯改性聚氨酯粘接剂，对该类型粘接剂在口腔医学领域中的力学性能、微拉伸粘接强度等进行实验。最终结果表明：该粘接剂双键转化率与一般常用粘接剂双键转化率之间存在部分差异;实验Ⅰ组拉伸强度明显小于其余实验组，其余实验组无明显差异，但水浸泡3d以后，实验Ⅱ组拉伸强度明显高于其他组;实验组与对照组相比微拉伸粘接强度在经水泡以后有明显提升，而对照组粘接强度下降明显。

关键词：光/湿双固化;聚氨酯粘接剂;双键转化率;拉伸强度

中图分类号：TQ433.4+32 文献标识码：A     文章编号：1001-5922（2021）10-0014-04

Preparation of Light/Wet Dual Curing Polyurethane Adhesive and Research on Its Performance in Resin Bonding

Wang Hui

（Xi an Peihua University， Xi an 710125， China）

Abstract：This paper conducts experiments on the mechanical properties and micro-tensile bonding strength of this type of adhesive in the field of stomatology by preparing an acrylic modified polyurethane adhesive used in the field of stomatology. The final results show that there are some differences between the double bond conversion rate of this adhesive and the commonly used adhesive double bond conversion rate. The tensile strength of the experimental groupⅠwas significantly lower than that of the other experimental groups， and there was no significant difference in the other experimental groups. However， the tensile strength of the experimental group was significantly higher than that of the other groups after soaking in water for 3 days. Compared with the control group， the micro-tensile bonding strength of the experimental group increased significantly after the blister， while the bonding strength of the control group decreased significantly.

Key words：light/wet dual curing; polyurethane adhesive; double bond conversion rate; tensile strength

0 引言

光固化樹脂是一种广泛取代传统金属材质，作为口腔医学中牙体损伤缺失修复的新型材料。采用光固化树脂进行牙体修复，能够为患者提供较为良好的外形观感、化学稳定性等，是一种较为良好的医用材料。常见的牙体即刻粘接修复多采用光固化进行粘接，而采用光固化工艺进行复合材料牙齿缺损或粘接修复，几乎不可避免地会因为复合树脂在该工艺下的聚合收缩而造成树脂与粘接物之间界面的渗漏。尽管这种因光固化工艺形成的粘结面渗漏多为微渗漏或纳米渗漏，但仍会造成粘接界面的降解和破坏，最终导致粘接失效。因此，如何改良树脂材料以及粘接材料，成为当前口腔医学牙体损伤修复领域的重点研究方向。本试验以改善口腔医学领域树脂粘接效果以……