Abstract

A possibility was examined to enhance carbon-epoxy laminated composite mechanical properties by introducing a small concentration of reinforcing nanostructures – multi-wall onion-shaped fullerene-like nanoparticles of tungsten disulfide IF-WS₂, and its multi-layer hollow nanotubes, INT-WS₂, both known for their outstanding thermal, chemical, and mechanical resistance. Composite structures were prepared using a unidirectional prepreg of strong carbon fibers and epoxy resin, poly (vinyl butyral) solution in ethanol with ultrasonically dispersed WS₂ nanostructures in it. Particle size analysis has been performed to evaluate the quality of IF-WS₂ nanoparticles. SEM/EDS analysis was applied to observe the nanostructures, their dispersion in the composite, and the fracture zone after mechanical resistance tests of the prepared composite samples. Thorough mechanical tests were performed on a set of specimens with different fiber orientations: tensile test, bending test, and interlaminar shear test. The encouraging results were obtained, indicating that these newly designed light-weight composites are applicable for the automotive and nautical industry, unmanned aerial vehicles, and military aircrafts.

摘要

通过引入小浓度的增强纳米结构——二硫化钨 IF-WS _{2 的}多壁洋葱形富勒烯类纳米粒子及其多层中空纳米管 INT- WS ₂均以其出色的耐热性、耐化学性和耐机械性而闻名。复合结构使用强碳纤维和环氧树脂的单向预浸料、聚乙烯醇缩丁醛乙醇溶液制备，其中超声波分散 WS ₂纳米结构。已进行粒度分析以评估 IF-WS ₂的质量纳米粒子。SEM/EDS 分析用于观察纳米结构、它们在复合材料中的分散情况以及制备的复合材料样品在机械阻力测试后的断裂区域。对一组具有不同纤维取向的试样进行了彻底的机械试验：拉伸试验、弯曲试验和层间剪切试验。取得了令人鼓舞的结果，表明这些新设计的轻质复合材料适用于汽车和航海工业、无人机和军用飞机。