多孔Al2O3陶瓷/纳米ZrO2颗粒/环氧树脂复合材料的制备及性能研究

摘要

Epoxy resin, firming agent, porous Al2O3ceramic and nano-ZrO2 particles were used to have prepared epoxy resin and its composites at room temperature. The effects of the contents of nano-ZrO2 particles and porous Al2O3ceramic on compressive and flexural stability at high temperature and friction properties of epoxy resin composites were researched in this paper. The results show that at the content of nano-ZrO2 particles of 3wt% and porous Al2O3ceramic of 83% porosity, the new composites have better mechanical properties. The compressive strength, compressive modulus, flexural strength and flexural modulus of the new composites are 187.9MPa, 2.55 GPa, 121.3 MPa and 3.61GPa, respectively. The new epoxy resin composites have better dimensional stability at the high temperature, and no deformation at 180℃. . Wear experiments show the new composites have lowered the wear loss and much better wear behaviors as compared with other epoxy resin composites at the same friction time.%以环氧树脂、固化剂、多孔Al 2 O 3陶瓷、纳米ZrO 2颗粒为主要原料，采用常温固化的方法制备环氧树脂及其复合材料，研究纳米ZrO2颗粒和多孔Al2O3陶瓷含量对环氧树脂及其复合材料弯曲、压缩、高温尺寸稳定性和摩擦性能的影响。研究结果表明：当纳米ZrO 2含量为3wt%，多孔Al 2 O 3陶瓷孔隙度为83%时，新型复合材料的综合力学性能达到最佳，抗压强度、抗压模量、抗弯强度和抗弯模量分别为187.9 MPa、2.55 GPa、121.3 MPa和3.61 GPa，该复合材料具有良好的高温稳定性180℃时未出现明显变形。摩擦磨损试验表明，与其他环氧树脂基复合相比，在相同摩擦时间内该新型复合材料的磨损量最低，具有更好的耐磨性。