ZnO介晶填料的制备及其齿科复合树脂的性能  

Preparation of Zinc Oxide Mesocrystal Filler and Its Properties as Dental Composite Resin

作　　者：刘玉玲 王瑞莉 李楠 刘梅[2] 张青红[1] LIU Yu-Ling;WANG Rui-Li;LI Nan;LIU Mei;ZHANG Qing-Hong(College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, China)

机构地区：[1]东华大学材料科学与工程学院,上海201620 [2]南京医科大学江苏省口腔疾病重点实验室,南京210029

出　　处：《无机材料学报》2019年第10期1077-1084,共8页Journal of Inorganic Materials

基　　金：国家重点研发计划(2016YFA0201702,2016YFA0201700);国家自然科学基金(81701025)~~

摘　　要：无机填料是齿科修复复合树脂的主要成分,它对复合树脂的性能和功能至关重要。本文以三乙醇胺为软模板剂,六水合硝酸锌为主要原料,水热法制备平均晶粒尺寸37.5 nm ZnO晶粒构筑的微米级多孔介晶微球,具有良好的有序性。经γ-甲基丙烯酰氧丙基三甲氧基硅烷(γ-MPS)对ZnO介晶微球改性后,与改性的SiO2微球混合,添加到Bis-GMA/TEGDMA树脂体系中,制成复合树脂。通过形貌和性能测试发现, 20wt%ZnO介晶填充的复合树脂中填料分散均匀、力学和耐磨损性能优异,其中树脂弯曲强度133 MPa、弯曲模量9.8 GPa;磨损3000次后,树脂体积损耗为1.02mm^3,磨损量比商业ZnO微球和单纯SiO2填充的复合树脂分别降低了88.7%和90.8%。而且,含氧化锌的复合树脂对口腔中变异链球菌的抗菌率达到99.9%。The inorganic filler is the main component of the dental restoration composite resin, which is very important for the properties and functions of composite resin. In this paper, zinc oxide(ZnO) mesocrystal microspheres were prepared from Zn(NO3)×6H2O solution in presence of triethanolamine as the soft template by hydrothermal method, these microspheres were self-assembled by 37.5 nm ZnO crystallite and with good order. ZnO mesocrystal microspheres were modified with γ-methacryloxypropyl trimethoxysilane(γ-MPS) and subsequently mixed with modified SiO2 microspheres as fillers, and then added to the Bis-GMA/TEGDMA system to prepare the composite resin. Through morphology observation and performance test, it is found the filler is uniformly dispersed in composite resin. The one filled with 20 wt% ZnO mesocrystals has excellent mechanical properties and wear resistance, among which the flexural strength and modulus reach 133 MPa and 9.8 GPa, respectively with the volume loss at 1.02 mm^3 after 3000 times of wearing, which was 88.7% and 90.8% lower than that of the composite resin filled with commercial ZnO microspheres and bare SiO2, respectively. Moreover, the antibacterial rate of zinc oxide composite resin against streptococcus mutans in the oral cavity reached 99.9%.

关 键 词：齿科复合树脂 ZnO介晶 力学性能 耐磨性能 抗菌性能 

分 类 号：TQ174[化学工程—陶瓷工业]