Enhancement of Fracture Toughness of Epoxy Nanocomposites by Combining Nanotubes and Nanosheets as Fillers.
Enhancement of Fracture Toughness of Epoxy Nanocomposites by Combining Nanotubes and Nanosheets as Fillers.
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DOI：
10.3390/ma10101179
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发表时间：
2017-10-19
期刊：
影响因子：
--
通讯作者：
Mohamud H
中科院分区：
文献类型：
--
作者：
Domun N;Paton KR;Hadavinia H;Sainsbury T;Zhang T;Mohamud H
在本工作中，通过添加低负荷的单组分和杂化纳米填料材料，提高了环氧树脂的断裂韧性。采用功能化多壁碳纳米管(f-MWCNTs)作为单一填料，在填充量仅为0.1wt%的情况下，其临界应变能释放率(GIC)比纯环氧树脂提高了57%。重要的是，与纯净的环氧树脂相比，纳米复合材料的拉伸或热性能没有下降。当二维氮化硼纳米片(BNNS)与一维f-MWCNTs一起加入时，其断裂韧性比纯环氧树脂的断裂韧性进一步提高了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)作为混杂填料时，纯净的环氧树脂的断裂韧性提高了91.9%。在这两种混杂填充体系中，复合材料的拉伸性能都没有下降，但含有氮化硼材料的纳米复合材料的热性能略有下降。
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, GIC, 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.
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