论文部分内容阅读
目的评估不同掺杂量下的β-SiC纳米线对POSS复合树脂的抗压强度和弯曲强度的影响,为纳米复合树脂在齿科领域的应用提供理论依据。方法将经过KH550硅烷偶联化处理过的β-SiC纳米线均匀散布于POSS复合树脂之中,合成出β-SiC纳米线的质量分数分别为0.5%,1.0%和1.5%的β-SiC纳米线杂化POSS复合树脂,分别设为B,C,D三组,纯POSS树脂组为A组(对照组)。用万能试验机对各组件的抗压强度和弯曲强度力学参数进行测试,并用扫描电子显微镜对表面形貌进行观测,对实验数据进行统计学分析。结果统计学分析结果表明,与其他各组分比较,B组0.5%β-SiC纳米线加固的POSS复合树脂的弯曲强度,抗压强度均最高,与对照组相比分别增加了67.64%和34.76%。差异有统计学意义(P<0.05)。结论添加适量的β-SiC纳米线可显著增强POSS复合树脂的弯曲强度和抗压强度。
Objective To evaluate the effect of β-SiC nanowires with different doping on the compressive strength and flexural strength of POSS composites, and provide a theoretical basis for the application of nanocomposites in dental field. Methods The β-SiC nanowires treated by silane coupling of KH550 were uniformly dispersed in POSS composite resin, and the β-SiC nano-wires with β-SiC nanowires mass fraction of 0.5%, 1.0% and 1.5% The linear hybrid POSS composite resins were set as B, C and D respectively. The pure POSS resin group was A group (control group). The universal testing machine was used to test the compressive strength and flexural strength of each component. The surface morphology was observed by scanning electron microscope, and the experimental data were statistically analyzed. Results The results of statistical analysis showed that the flexural strength and compressive strength of POSS composite reinforced with 0.5% β-SiC nanowires in Group B were the highest compared with those of the other components, increasing by 67.64% and 34.76 %. The difference was statistically significant (P <0.05). Conclusion The addition of appropriate amount of β-SiC nanowires can significantly enhance the flexural strength and compressive strength of POSS composites.