可光固化聚氨酯粘接剂的制备及其对传统丙烯酸树脂粘接剂性能的影响

doi:10.13481/j.1671-587x.20200226

摘要/Abstract

摘要： 目的：合成一种可光固化聚氨酯（PU）粘接剂，并探讨其对3种商品树脂粘接剂的吸水值、溶解值、双键转化率和微剪切强度的影响。方法：以聚醚三元醇、异氟尔酮二异氰酸酯和甲基丙烯酸羟乙酯等为原料，用溶液聚合法合成一种聚醚型PU预聚体，通过傅里叶转换红外光谱（FT-IR）法对其结构进行表征，并辅以稀释剂、溶剂和光引发剂制备成可光固化PU粘接剂。以商品粘接剂Single Bond Universal（SBU）、Single Bond 2（SB2）和Clearfil SE（SE）为对照组，以加入质量分数70%PU后的粘接剂SBU-70%PU、SB2-70%PU和SE-70%PU为实验组。根据YY 1042-2011标准，测量实验组和对照组粘接剂的吸水值和溶解值，采用FT-IR法检测各组粘接剂的双键转化率，利用万能试验机测量各组粘接剂的微剪切强度。结果：FT-IR检测，在1 638 cm^-1处出现了光固化基团（C=C双键）的特征性吸收峰，与预期产物结构相一致。各实验组（SBU-70%PU组、SB2-70%PU组和SE-70%PU组）粘接剂的吸水值明显低于相应的对照组（t=15.479，P<0.05；t=19.703，P<0.05；t=11.795，P<0.05）；SBU-70%PU组和SB2-70%PU组的溶解值明显低于相应对照组（t=29.845，P<0.05；t=28.862，P<0.05）；各实验组双键转化率明显高于相应对照组（t=-11.612，P<0.05；t=7.213，P<0.05；t=-15.031，P<0.05）；SB2-70%PU组的微剪切强度明显高于相应对照组（t=-2.515，P<0.05）。结论：成功合成光固化PU粘接剂，在3种商品粘接剂中加入70%PU后可明显降低粘接剂的吸水值和溶解值，提高双键转化率，对微剪切强度无明显影响，可使粘接剂的综合性能得到有效改善。

关键词: 光固化, 聚氨酯, 牙本质粘接剂, 粘接性能

Abstract: Objective: To synthesize a light-curable polyurethane(PU) adhesive, and to explore its effects on the water absorption values,the water solubility values,the rates of double blond conversion and the micro-shear bond strength of three commercial resin adhesives. Methods: A polyether PU prepolymer was synthesized by solution polymerization using polyether triol, isophorone diisocyanate,and 2-hydroxyethyl methacrylate as raw materials. The structure of the product was characterized by Fourier transform infrared spectroscopy(FT-IR), and a diluent, a solvent and a photoinitiator were used to prepare a light-curable PU adhesive.The commercial adhesives Single Bond Universal (SBU), Single Bond 2 (SB2) and Clearfil SE (SE) were used as control groups;the SBU,SB2 and SE added with 70%PU adhesives(SBU-70% PU, SB2-70% PU and SE-70% PU) were used as experimental groups. According to the YY 1042-2011 standard, the water absorption values,the water solubility values of the adhesives in experimental groups and control groups were measured.The rates of double bond conversion of the adhesives in various groups were measured by FT-IR. The micro-shear bond strengths of adhesives in various groups were measured using universal testing machine. Results: The FT-IR results showed a characteristic absorption peak of a photo-curable group (C=C double bond) at 1 638 cm^-1, consistent with the expected product structure.The water absorption values of adhensives in experimental groups(SBU-70%PU group,SB2-70%PU group and SE-70%PU group) were significantly lower than those in the corresponding control groups (t=15.479,P<0.05;t=19.703,P<0.05; t=11.795,P<0.05);the solubility values of the adhesives in SBU-70%PU group and SB2-70%PU group were significantly lower than those in the corresponding control groups(t=29.845, P<0.05;t=28.862,P<0.05);the rates of double bond conversion of adhesives in experimental groups were significantly higher than those in the corresponding control groups (t=-11.612,P<0.05;t=7.213, P<0.05;t=-15.031,P<0.05); the micro-shear bond strength of the adhesive in SB2-70%PU group was significantly higher than that in the corresponding control group (t=-2.515,P<0.05). Conclusion: After successfully synthesizing light-curing PU adhesive, and adding 70% PU to the three commercial adhesives, it can significantly reduce the water absorption values and the solubility values of the adhesives, increase the rates of double bood conversion, and it has no significant effect on the micro-shear bond strength, so that the overall properties of the adhesive is effectively improved.

Key words: light curing, polyurethane, dental adhesive, bonding properties

中图分类号:

R783.1

张晓萌, 王惠敏, 杨宇斌, 朱轩言, 田子璐, 朱松. 可光固化聚氨酯粘接剂的制备及其对传统丙烯酸树脂粘接剂性能的影响[J]. 吉林大学学报(医学版), 2020, 46(02): 365-371.

ZHANG Xiaomeng, WANG Huimin, YANG Yubin, ZHU Xuanyan, TIAN Zilu, ZHU Song. Preparation of light-curable polyurethane adhesive and its effect on properties of traditional acrylic resin adhesives[J]. Journal of Jilin University(Medicine Edition), 2020, 46(02): 365-371.

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