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首页> 外文期刊>RSC Advances >Influence of hollow carbon microspheres of micro and nano-scale on the physical and mechanical properties of epoxy syntactic foams
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Influence of hollow carbon microspheres of micro and nano-scale on the physical and mechanical properties of epoxy syntactic foams

机译：中空微米级纳米碳微球对环氧复合泡沫塑料物理力学性能的影响

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摘要

Epoxy syntactic foams were prepared by introducing hollow carbon microspheres (HCMs) of micro and nano-scale. Based on the surface structure analysis of the HCMs, the effects of HCM content and particle size on the mechanical properties, dimensional stability, thermal conductivity, thermal stability and dielectric properties of the epoxy foam were investigated. The density of the epoxy foam gradually declined with the increase of the micro-scale HCM (M-HCM) content up to 9 wt%, and the compression strength of the epoxy foam just decreased slightly, while the compression modulus and flexural modulus were enhanced continuously. When 0.5 wt% and 1 wt% of HCMs were involved, the reinforcing effect of nano-scale HCMs (N-HCMs) was superior to the M-HCMs. The compression strength of the N-HCM/epoxy foams was almost equivalent to the neat epoxy, while the flexural strength of the N-HCM samples exhibited an obvious superiority. The dimensional stability and thermal stability of the epoxy foams were also improved with the addition of HCMs. Besides, the introduction of the M-HCMs and N-HCMs gave rise to different effects on the thermal conductivity, electrical conductivity and dielectric constant of the resulting epoxy foams due to the diversity in the interfacial interactions and microstructure. These results indicate that the HCM/epoxy syntactic foams show potential for application in multifunctional materials that are lightweight and of high rigidity.
机译：通过引入微米级和纳米级的中空碳微球（HCM）来制备环氧复合泡沫塑料。在对HCM表面结构分析的基础上，研究了HCM含量和粒径对环氧泡沫塑料力学性能，尺寸稳定性，导热性，热稳定性和介电性能的影响。随着微尺度HCM（M-HCM）含量的增加，环氧泡沫塑料的密度逐渐下降，直至达到9 wt％，环氧泡沫塑料的压缩强度略有下降，而压缩模量和挠曲模量却有所提高。不断地。当涉及0.5重量％和1重量％的HCM时，纳米级HCM（N-HCM）的增强效果优于M-HCM。 N-HCM /环氧树脂泡沫的抗压强度几乎与纯环氧树脂相当，而N-HCM样品的抗弯强度则表现出明显的优越性。通过添加HCM，还可以改善环氧泡沫塑料的尺寸稳定性和热稳定性。此外，由于界面相互作用和微观结构的多样性，M-HCM和N-HCM的引入对所得环氧泡沫的导热率，电导率和介电常数产生不同的影响。这些结果表明，HCM /环氧复合泡沫塑料显示出可用于轻质高刚性多功能材料的潜力。

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