纳米SiO_2与玻璃纤维含量对尼龙6显微硬度的影响

Effect of the Nano-SiO_2 and Glass Fibers Content on Micro-Hardness of Nylon6 Composites

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。

The nylon 6/SiO2 nanocomposites, the nylon 6/GF composites and the nylon6/SiO2/GF nanocomposites were prepared by in situ polymerization and screw extruder method. The micro-hardness of these composites with differ nano-SiO2 and glass fibers content was measured by micro-scerometer. The results indicate that the micro-hardness of the nylon 6/SiO2 nanocomposites and the nylon 6/GF composites increases with increasing in the nano-SiO2 and glass fibers content; the micro-hardness of the nylon 6/SiO2/GF nanocomposites first rises and then falls again rises with increasing in glass fibers content. Their acting mechanism of the nano-SiO2 and glass fibers content on micro-hardness of nylon 6 composites was discussed initially.