以可反应性纳米SiO2(RNS)为填料, 用熔融共混法制备SiO2/尼龙1010纳米复合材料, 表征其力学性能并研究了增强和增韧机理. 结果表明,在熔融共混过程中RNS与尼龙1010发生了强烈的界面相互作用, 提高了材料的拉伸强度、断裂伸长率和弹性模量; 而纳米SiO2的表面有机修饰层使材料的韧性有所提高.纳米SiO2质量分数为1.0 %的复合材料拉伸强度最大, 比纯尼龙1010的高4%;而0.7%纳米SiO2 的复合材料断裂伸长率和弹性模量最大, 分别比纯尼龙的高16.6%和13.4%.
Reactable nano- silica/PA1010 hybrid composites were prepared by means of melt blending and the mechanical properties , the morphology of the impact, tensile fractured surface of the composites were studied and the mechanism of PA1010 being reinforced and toughened by nano- silica was introduced. The results showed when the content of the nano-silica increased, the tensile modulus of all composites was higher than that of PA1010 matrix, the tensile strength and the break elongation of the composites increased. When the content of the nano-silica was 1 % , the tensile strength of the composite was the highest ; 4% higher than that of PA1010 matrix, the content of the nano-silica was 0.7%, the break elongation，the tensile modulus of the composite were the highest, 17.6%,13.4% higher than that of PA1010 matrix.
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