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新型SrTiO₃/MnO₂混合纳米颗粒对聚甲酸的影响) 热和机械行为

Houda Taher Elhmali¹, Ivana Stajcic², Aleksandar Stajcic³

¹Faculty of Technology and Metallurgy, University of Belgrade, 11000 Belgrade, Serbia.

|January 26, 2024

概括

这项研究使用酸 (STO) 和STO/氧化物 (MnO2) 纳米粒子增强了聚甲基甲酸盐 (PMMA) 牙科材料. 混合填充剂显著提高了硬度和冲击能量,使PMMA更适合牙科应用.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
生物材料工程生物材料工程

背景情况:

牙科用聚甲基甲酸 (PMMA) 在冲击强度和硬度方面存在局限性.
纯PMMA不太适合要求的牙科应用,因为机械性能不够好.

研究的目的:

为了提高PMMA的抗冲击性和硬度,使用了酸 (STO) 和混合STO/氧化物 (MnO2) 填充剂.
为了研究这些填充剂对PMMA的热性能和挥发性漏的影响.

主要方法:

将STO和STO/MnO2纳米粒子纳入PMMA.
不同扫描热量计 (DSC) 分析玻璃过渡温度 (Tg) 和挥发性蒸发.
机械测试用于评估微硬度和冲击能量吸收.

主要成果:

混合STO/MnO2填充剂显著增加了89.9%的微硬度和145.4%的总吸收冲击能量.
1重%的填充剂负荷没有影响Tg,但PMMA-STO/MnO2复合材料显示出改善了挥发性分子的捕获.
该研究强调了STO和STO/MnO2纳米颗粒在增强PMMA方面的潜力.

结论:

混合STO/MnO2纳米颗粒有效地增强PMMA的机械性能,用于牙科应用.
与纯PMMA相比,开发的复合材料提供了更好的冲击强度和硬度.
这些增强纳米颗粒显示出在聚合物修饰中更广泛的应用的前景.

关键词:

这是一种PMMA复合材料.这种SrTiO3/MnO2 机械性能机械性能机械性能纳米颗粒是一种纳米粒子.

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