硅灰石增强的复合树脂的机械性能研究

发布时间：2018-02-15 08:40

本文关键词： 硅灰石复合树脂压缩强度试验断裂强度试验弯曲强度试验　出处：《吉林大学》2017年硕士论文　论文类型：学位论文

【摘要】：目的:使用五种不同的硅灰石作为树脂无机填料,用以bis-GMA为基础的树脂基质,充分混合后,在不同模型中进行光固化,进行压缩强度试验,断裂强度试验和弯曲强度试验。方法:该试验的树脂基质是由48wt%bis-GMA(bis-phenol-A-diglycidyl dimethacrylate),25wt%TEGDMA(triethyleneglycol dimethacrylate),25wt%HEMA(hydroxyethyl methacrylate),1wt%CEMA(N,Ncyanoethy l methylaniline)和1wt%CQ(camphoroquinone)。用五种不同类型的硅灰石,其类型分别是520U,915U,1515U,800U和905U。将520U,915U和1515U三种类型的硅灰石分别调配成30vol%,40vol%,50vol%和60vol%四种浓度作为实验树脂混合物备用。此外,对于800U和905U两种类型的硅灰石,分别调配40vol%,50vol%,60vol%,70vol%四种不同浓度。待完全混合后,树脂混合物需要存储在冰箱(4-8°)稳定至少48 h。在断裂韧性试验中使用notchless模型(NTP),准备6个标本(n=6);压力测试中准备八个标本(n=8);在弯曲强度测试中,采用三点弯曲试验,准备8个实验样品(n=8)。样本准备在这些措施,在室温下储存,然后测试24小时后存储初始稳定。数据分析统计方法使用one-way ANOVA的方差分析。结果:复合树脂的机械性能的增强效果显著依赖于无机填料的形态和浓度。硅灰石与bis-GMA-based树脂基质有良好的润湿性和分散性。硅灰石提高了bis-GMA-based复合树脂材料的机械性能。结论:1.从EDX分析,五种硅灰石在主要元素上没有明显的差异。2.在压缩强度测试中,40%905U的硅灰石增强的复合树脂的压缩强度最大。3.在断裂强度试验中,最高值出现在60%1515U的硅灰石增强的复合树脂。4.在弯曲强度试验中,40%915U的硅灰石增强的复合树脂的弯曲强度最高。
[Abstract]:Objective: to use five kinds of wollastonite as resin inorganic filler and resin matrix based on bis-GMA. Fracture strength test and flexural strength test-methods: the resin matrix for this test is composed of 48 wtbis-GMAbis-phenol-diglycidyl dimethacrylatel dimethacrylate ethyleneglycol dimethacrylateol 25 wtHEMA hydroxyl methoxymethacrylate 1 wtMA Ncyanoethy l methylaniline) and 1 wtCQ camphoroquinone with five different types of wollastonite. The types of wollastonite are 520U 915U 800U and 905U respectively. Three types of wollastonite, 520U, 915U and 1515U, are prepared for use as experimental resin mixtures at the concentrations of 30volum, 40voll, 50vol% and 60vol%, respectively. In addition, for two types of wollastonite, 800U and 905U, Each of the four different concentrations of 40 volt and 50 volt, and 60 volts and 70 vol.When the mixture is complete, The resin mixture needs to be stored in the refrigerator for 4-8 掳) to be stable for at least 48 hours. In the fracture toughness test, the notchless model is used to prepare 6 specimens; eight specimens are prepared for the pressure test; and in the bending strength test, the three-point bending test is used. Prepare 8 experimental samples for storage at room temperature. The initial storage stability was then tested 24 hours later. The data analysis and statistics method was based on the analysis of variance of one-way ANOVA. Results: the mechanical properties of composite resins were significantly dependent on the morphology and concentration of inorganic fillers. Bis-GMA-based resin matrix has good wettability and dispersibility. Wollastonite improves the mechanical properties of bis-GMA-based composite resin. There is no significant difference between the five wollastonite in the main elements. 2. In the compression strength test, 405 U wollastonite reinforced composite resin has the highest compressive strength. 3. In the fracture strength test, The highest value was found in the composite resin reinforced by wollastonite at 60U 15U. In the bending strength test, the flexural strength of the composite resin reinforced by wollastonite at 405U was the highest.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R783.1

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