Micromechanical response of two-dimensional transition metal carbonitride (MXene) reinforced epoxy composites
Micromechanical response of two-dimensional transition metal carbonitride (MXene) reinforced epoxy composites
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DOI：
10.1016/j.compositesb.2019.107603
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发表时间：
2020-02-01
影响因子：
13.1
通讯作者：
Gogotsi, Yury
中科院分区：
文献类型：
--
作者：
Hatter, Christine B.;Shah, Jay;Gogotsi, Yury
MXenes由于其优异的电学和机械性能而成为制造多功能复合材料的理想材料，因此作为聚合物复合材料的填料受到了广泛的关注。本研究采用溶剂法制备了ti3cn -环氧复合材料，并用胺基固化剂固化。研究了Ti3CN含量对环氧体系热降解行为和微观力学性能的影响。用透射电镜分析了环氧树脂在MXene薄片之间的插层程度。纳米压痕分析表明，MXene-环氧复合材料的力学性能随着MXene含量的增加而改善，当Ti3CN含量为90 wt%时，杨氏模量最高提高到12.8 GPa。与纯环氧树脂相比，在Ti3CN的最大载荷下，复合材料的抗蠕变性能提高了46%。
MXenes have attracted much attention as fillers in polymer composites due to their superior electrical and mechanical properties making them ideal for creating multifunctional composites. In this work, Ti3CN-epoxy composites were prepared via solvent processing and cured with amine-based hardener. The effects of Ti3CN content in the epoxy system on the thermal degradation behavior and micromechanical properties were investigated. The extent of intercalation of epoxy between MXene flakes was analyzed by transmission electron microscopy. Nanoindentation analysis of MXene-epoxy composites exhibited improved mechanical properties with increasing MXene content with highest increase to 12.8 GPa Young's modulus for 90 wt% Ti3CN. An increase in creep resistance of composites was observed at maximum loading of Ti3CN by 46% compared to neat epoxy.