通过将纳米管和纳米片作为填料相结合来提高环氧纳米复合材料的断裂韧性

Enhancement of Fracture Toughness of Epoxy Nanocomposites by Combining Nanotubes and Nanosheets as Fillers.

作者信息

Domun Nadiim, Paton Keith R, Hadavinia Homayoun, Sainsbury Toby, Zhang Tao, Mohamud Hibaaq

机构信息

School of Engineering, Kingston University, London, SW15 3DW, UK.

National Physical Laboratory, Hampton Road, Teddington, Middlesex, UK.

出版信息

Materials (Basel). 2017 Oct 19;10(10):1179. doi: 10.3390/ma10101179.

In this work the fracture toughness of epoxy resin has been improved through the addition of low loading of single part and hybrid nanofiller materials. Functionalised multi-walled carbon nanotubes (f-MWCNTs) was used as single filler, increased the critical strain energy release rate, G, by 57% compared to the neat epoxy, at only 0.1 wt% filler content. Importantly, no degradation in the tensile or thermal properties of the nanocomposite was observed compared to the neat epoxy. When two-dimensional boron nitride nanosheets (BNNS) were added along with the one-dimensional f-MWCNTs, the fracture toughness increased further to 71.6% higher than that of the neat epoxy. Interestingly, when functionalised graphene nanoplatelets (f-GNPs) and boron nitride nanotubes (BNNTs) were used as hybrid filler, the fracture toughness of neat epoxy is improved by 91.9%. In neither of these hybrid filler systems the tensile properties were degraded, but the thermal properties of the nanocomposites containing boron nitride materials deteriorated slightly.

在这项工作中，通过添加低负载量的单一组分和混合纳米填料来提高环氧树脂的断裂韧性。功能化多壁碳纳米管（f-MWCNTs）被用作单一填料，在仅0.1 wt%的填料含量下，与纯环氧树脂相比，临界应变能释放率G提高了57%。重要的是，与纯环氧树脂相比，未观察到纳米复合材料的拉伸性能或热性能有下降。当二维氮化硼纳米片（BNNS）与一维f-MWCNTs一起添加时，断裂韧性进一步提高，比纯环氧树脂高71.6%。有趣的是，当功能化石墨烯纳米片（f-GNPs）和氮化硼纳米管（BNNTs）用作混合填料时，纯环氧树脂的断裂韧性提高了91.9%。在这些混合填料体系中，拉伸性能均未下降，但含氮化硼材料的纳米复合材料的热性能略有恶化。