Yu Kejing, Wang Menglei, Wu Junqing, Qian Kun, Sun Jie, Lu Xuefeng
Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China.
Nanomaterials (Basel). 2016 May 12;6(5):89. doi: 10.3390/nano6050089.
The mechanical properties of the hybrid materials and epoxy and carbon fiber (CF) composites were improved significantly as compared to the CF composites made from unmodified epoxy. The reasons could be attributed to the strong interfacial interaction between the CF and the epoxy composites for the existence of carbon nanomaterials. The microstructure and dispersion of carbon nanomaterials were characterized by transmission electron microscopy (TEM) and optical microscopy (OM). The results showed that the dispersion of the hybrid materials in the polymer was superior to other carbon nanomaterials. The high viscosity and shear stress characterized by a rheometer and the high interfacial friction and damping behavior characterized by dynamic mechanical analysis (DMA) indicated that the strong interfacial interaction was greatly improved between fibers and epoxy composites. Remarkably, the tensile tests presented that the CF composites with hybrid materials and epoxy composites have a better reinforcing and toughening effect on CF, which further verified the strong interfacial interaction between epoxy and CF for special structural hybrid materials.
与由未改性环氧树脂制成的碳纤维（CF）复合材料相比，这些混杂材料以及环氧树脂与CF复合材料的机械性能得到了显著改善。原因可归因于碳纳米材料的存在使CF与环氧树脂复合材料之间产生了强烈的界面相互作用。通过透射电子显微镜（TEM）和光学显微镜（OM）对碳纳米材料的微观结构和分散情况进行了表征。结果表明，混杂材料在聚合物中的分散性优于其他碳纳米材料。流变仪所表征的高粘度和剪切应力以及动态力学分析（DMA）所表征的高界面摩擦和阻尼行为表明，纤维与环氧树脂复合材料之间的强界面相互作用得到了极大改善。值得注意的是，拉伸试验表明，含有混杂材料的CF复合材料和环氧树脂复合材料对CF具有更好的增强和增韧效果，这进一步证实了特殊结构混杂材料中环氧树脂与CF之间存在强界面相互作用。
