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采用叠层模压法制备了纳米Al2O3-碳纤维织物多尺度增强聚酰胺基(nano Al2O3-CFF/PA6)复合材料层压板。借助场发射扫描电子显微镜(FESEM)、TGA/DSC同步热分析法FTIR,研究了模压温度、压力和纳米Al2O3加入量等因素对nano Al2O3-CFF/PA6复合材料力学性能的影响。研究表明:在模压温度为230℃、模压压力为3MPa和保压时间为15min时,CFF/PA6层压板的弯曲强度为250.3MPa,层间剪切强度为87.6MPa,平行层厚方向的冲击强度为41.2MPa,垂直层厚方向为9.6MPa。当基体中的Al2O3含量达到6wt%时,nano Al2O3-CFF/PA6层压板的弯曲强度为387.6MPa,层间剪切强度为35.7MPa,平行和垂直层厚方向的冲击强度分别为80.3MPa和25.6MPa。
A multi-scale reinforced nano-Al2O3-CFF / PA6 composite nanocomposite laminate with nano-sized Al2O3-carbon fiber fabric was prepared by the laminating molding method. The effects of molding temperature, pressure and amount of nano-Al2O3 added on the mechanical properties of nano-Al2O3-CFF / PA6 composites were investigated by field emission scanning electron microscopy (FESEM) and TGA / DSC simultaneous thermal analysis (FTIR) The results show that the bending strength of CFF / PA6 laminates is 250.3MPa, the interlaminar shear strength is 87.6MPa at the molding temperature of 230 ℃, the molding pressure of 3MPa and the holding time of 15min. The impact strength in parallel layer thickness 41.2MPa, the vertical direction of the thickness of 9.6MPa. When the content of Al2O3 in the matrix reaches 6wt%, the flexural strength of the nano Al2O3-CFF / PA6 laminate is 387.6MPa, the interlaminar shear strength is 35.7MPa, the impact strength in parallel and vertical layer thickness are 80.3MPa and 25.6 MPa.