| Summary: | 碩士 === 中華科技大學 === 飛機系統工程研究所 === 107 === In this study, the synergistic effect on mechanical properties of graphene nanoplatelets (GNPs)/multi-walled carbon nanotube (MWCNTs) reinforced epoxy/glass fiber composite (GFRP) laminates via VARTM process were investigated. The mechanical properties of MWCNTs reinforced GFRP laminate were investigate in the preliminary study in order to understand the reinforce behavior of single carbon nanomaterials reinforced GFRP. After discuss the above experiment result, the GNP/CNT hybrids (0.1, 0.25, 0.5 and 1.0 wt%) with different mixing ratios (i.e., 9:1, 5:5, and 1:9) were dispersed in epoxy resin to prepare GNP/CNT/GFRP laminates. The mechanical properties such as ultimate tensile strength, flexural strength, flexural modulus, and interlaminar shear strength (ILSS) of these nanocomposite laminates were investigated. Additionally, the fracture surfaces of the specimens examined using field-emission scanning electron microscopy to determine the dispersal mechanisms and reinforce behavior of the GNP/CNT hybrids in the GFRP laminate.
The experimental results indicate that the mechanical properties of GNP/CNT/GFRP laminates are optimized by reinforcement through the addition of GNP/CNT hybrids. A synergistic effect was noticed when the GNP/CNT hybrids were added. The mechanical properties of the GNP/CNT/GFRP laminates, such as the tensile strength, flexural strength, and ILSS, were superior to those of the GFRP laminate containing a single carbon nanomaterial and neat GFRP laminate. However, the Young’s modulus and flexural modulus of the GNP/CNT/GFRP laminate show negligible improvements compared to that of the n containing a single carbon nanomaterial and neat GFRP laminate.
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