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通过熔融共混的方法制备PA66/POE-g-MAH/纳米SiO2三元共混体系,研究纳米SiO2、POE-g-MAH对PA66力学性能的影响。研究结果表明:POE-g-MAH与纳米SiO2对PA66有协同增韧效应,当PA66/POE-g-MAH/纳米SiO2配比为100/30/0.1时,复合体系的缺口冲击强度达到最大,为纯PA66的10.9倍,为PA66/POE-g-MAH(100/30)二元体系的1.8倍;低温缺口冲击强度也达到最大,为纯PA66的6.3倍。用扫描电镜观察分析冲击断口形态。
PA66 / POE-g-MAH / nano-SiO2 ternary blends were prepared by melt blending method to study the effect of nano-SiO2 and POE-g-MAH on the mechanical properties of PA66. The results show that POE-g-MAH and nano-SiO2 have synergistic toughening effect on PA66. When the ratio of PA66 / POE-g-MAH / nano SiO2 is 100/30 / 0.1, the notched impact strength of composite system reaches the maximum, Which is 10.9 times that of pure PA66, which is 1.8 times higher than that of PA66 / POE-g-MAH (100/30) binary system. The notched impact strength reaches the maximum at 6.3 times that of pure PA66. Scanning electron microscopy analysis of impact fracture morphology.