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Nanomechanical characterization of single-walled carbon nanotube reinforced epoxy composites

机译：单壁碳纳米管增强环氧复合材料的纳米力学表征

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摘要

Nanomechanical properties of single-walled carbon nanotube (SWNT) reinforced epoxy composites with varying weight percentage (0, 1,3, and 5 wt percent) of nanotubes were measured by nanoindentation and nanoscratch techniques. Hardness and elastic modulus were measured using a nanoindenter. Scratch resistance and scratch damage were studied using the AFM tip sliding against the SWNT reinforced sample surfaces. Nanoindentationanoscratch deformation and fracture behaviour was studied by in situ imaging of the indentation impressions/scratch tracks. Viscoelastic properties of the nanocomposites were measured using nanoindentation dynamic mechanical analysis tests. The reinforcing mechanisms are discussed with reference to the nanotube dispersion, interfacial bonding, and load transfer in the SWNT reinforced polymer composites.
机译：通过纳米压痕和纳米划痕技术测量了单壁碳纳米管（SWNT）增强环氧树脂复合材料的纳米机械性能，其中纳米管的重量百分比不同（0、1、3和5重量百分比）。硬度和弹性模量使用纳米压头测量。使用AFM尖端在SWNT增强的样品表面上滑动，研究了耐刮擦性和耐刮擦性。通过压痕压痕/划痕的原位成像研究了纳米压痕/纳米划痕的变形和断裂行为。使用纳米压痕动态力学分析测试来测量纳米复合材料的粘弹性质。参照SWNT增强的聚合物复合材料中的纳米管分散，界面结合和载荷转移来讨论增强机理。

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