We report on the mechanical properties regarding self-cured acrylic polymethyl methacrylate (PMMA) reinforced with hexagonal boron nitride (h-BN) and stabilized zirconia (8Y ZrO₂) nanopowders. The nanocomposites were prepared by using both manual and ultrasonic mixing techniques. The fabricated specimens were subjected to micro indentation, bending strength, and modulus of elasticity measurements. A fully complete polymerization process under liquid monomer was provided by ultrasonic mixing as evidenced by Fourier transform infrared (FTIR) measurement. Independently of the nanopowder used, the hardness, bending strength, and modulus of elasticity of the formed nanocomposites highly increase in values with the increase of the filler concentrations. Higher bending strengths and modulus of elasticity of the nanocomposite were recorded when using h-BN nanopowder fillers whereas hardness increases when using 8Y ZrO₂ nanopowder. Results showed that with respect to the unloaded specimens made by manual mixing, ultrasonic mixing of PMMA with a 5 wt% h-BN increased the flexural strength (FS) and the modulus of elasticity or Young's modulus (YM) values to about 550% and 240%, respectively. However, a similar concentration of 8Y ZrO₂ increased the Vickers Hardness numbers (VH) to about 400%. This may suggest that PMMA loaded with a combination of h-BN and 8Y ZrO₂ nanopowders may lead to nanocomposites with outstanding mechanical performance.

我们报告了有关六方氮化硼（h-BN）和稳定的氧化锆（8Y ZrO ₂）增强的自固化丙烯酸聚甲基丙烯酸甲酯（PMMA）的力学性能。）纳米粉。通过使用手动和超声混合技术制备纳米复合材料。对制成的样品进行微压痕，弯曲强度和弹性模量测量。通过傅立叶变换红外（FTIR）测量证明，通过超声混合可以在液态单体下提供一个完全完整的聚合过程。与所使用的纳米粉末无关，所形成的纳米复合材料的硬度，弯曲强度和弹性模量随填料浓度的增加而大大增加。当使用h-BN纳米粉填料时，记录到纳米复合材料较高的弯曲强度和弹性模量，而当使用8Y ZrO ₂时，硬度增加纳米粉。结果表明，对于通过手动混合制成的空载样品，将PMMA与5 wt％的h-BN进行超声混合可将抗弯强度（FS）和弹性模量或杨氏模量（YM）值提高到约550％，分别为240％。但是，类似浓度的8Y ZrO ₂将维氏硬度值（VH）提高到约400％。这可能表明，将h-BN和8Y ZrO ₂纳米粉组合在一起的PMMA可能导致具有优异机械性能的纳米复合材料。