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通过原位聚合和螺杆挤出法制备了尼龙6/SiO2纳米复合材料、尼龙6/GF复合材料和尼龙6/SiO2/GF纳米复合材料。利用显微硬度计对不同纳米SiO2和玻璃纤维(GF)含量的三种复合材料进行了测量,结果表明,对于尼龙6/SiO2纳米复合材料或者尼龙6/GF复合材料而言,材料的显微硬度随着纳米SiO2含量或者GF含量的增加而增大;对于尼龙6/SiO2/GF纳米复合材料而言,当GF含量一定时,SiO2含量高的材料显微硬度相应要高;从整个曲线来看,随着GF含量的增加,材料的显微硬度呈现先上升然后下降再上升的趋势。
Nylon 6 / SiO2 nanocomposites, nylon 6 / GF composites and nylon 6 / SiO2 / GF nanocomposites were prepared by in situ polymerization and screw extrusion. Three kinds of composites with different content of nano-SiO2 and glass fiber (GF) were measured by micro-hardness tester. The results showed that for the nylon 6 / SiO2 nanocomposites or nylon 6 / GF composites, The hardness increases with the increase of nano-SiO2 content or GF content. For the nylon 6 / SiO2 / GF nanocomposites, when the content of GF is constant, the microhardness of the material with high SiO2 content is correspondingly high. With the increase of GF content, the microhardness of the material presents the tendency of first rising, then decreasing and then rising again.