摘要
目的:评价硅烷偶联剂用量对硼酸铝晶须增强树脂挠曲强度的影响。方法:使用0%、1%、2%、3%、4%质量分数的Z-6030对硼酸铝晶须进行表面处理;将处理过的晶须和树脂基质按一定的配方合成5组热固化型复合树脂,每组6个试件,在120℃的烘箱内固化1 h后,按ISO-4049标准进行三点弯曲测试。每组随机选1个试件,进行断面扫描电镜观察。采用SAS 9.2软件包对结果进行均数间两两比较。结果:硅烷偶联剂用量为2%质量分数时,增强树脂的挠曲强度(117.93±11.9)MPa最高,与其余4组差异显著。结论:硅烷偶联剂的用量对晶须的增强效果有显著影响,过多或过少均会降低复合树脂的挠曲强度。
PURPOSE： To evaluate the effect of amount of silane coupling agent on flexural strength of dental composite resins reinforced with aluminium borate whisker （ABW）. METHODS： ABW was surface-treated with 0%, 1%, 2%, 3% and 4% silan coupling agent （γ-MPS）, and mixed with resin matrix to synthesize 5 groups of composite resins. After heat- cured at 120℃ for 1 h, specimens were tested in three-point flexure to measure strength according to ISO-4049. One specimen was selected randomly from each group and observed under scanning electron microscope （SEM）. The data was analyzed with SAS 9.2 software package. RESULTS： The flexural strength （117.93±11.9Mpa）of the group treated with 2% silane coupling agent was the highest, and significantly different from that of the other 4 groups （α =0.01）. CONCLUSIONS： The amount of silane coupling agent has impact on the flexural strength of dental composite resins reinforced with whiskers; The flexual strength will be reduced whenever the amount is higher or lower than the threshold. Supported by Research Fund of Science and Technology Committee of Shanghai Municipality （08DZ2271100）.
出处
《上海口腔医学》
CAS
CSCD
2015年第3期294-297,共4页
Shanghai Journal of Stomatology
基金
上海市科学技术委员会资助项目(08DZ2271100)~~
关键词
晶须
复合树脂
硅烷偶联剂
挠曲强度
Whisker
Composite resin
Silane coupling agent
Flexual strength
