材料科学
纳米结构
石墨烯
纳米片
拉曼光谱
纳米复合材料
复合材料
极限抗拉强度
吸光度
化学工程
纳米技术
分析化学(期刊)
光学
有机化学
物理
化学
工程类
作者
Mengyi Peng,Zhenwang Wu,Wei Wei,Huajie Xu,Chuntai Liu,Changyu Shen
标识
DOI:10.1002/admi.202102418
摘要
Abstract The strategy of nacre‐inspired structures or the introduction of polymers can only strengthen and toughen 2D inorganic nanosheets‐based flexible films while mitigating their other properties. Herein, based on bending rigidity discrepancy of reduced graphene oxides (rGO) and Ti 3 C 2 nanosheets, the introduction of amino termination on Ti 3 C 2 (Ti 3 C 2 ‐NH 2 ) endows 3rGO/7Ti 3 C 2 ‐NH 2 films with enhanced ordered nanostructure and excellent multiperformance. Its interlayer‐ordered nanostructures are consistently confirmed by both wide‐angle X‐ray scattering and polarized Raman spectroscopy. The tensile strength and fracture energy increase by 84.7% and 156.3% compared with those of traditional 3rGO/7Ti 3 C 2 film, respectively. The higher remained stress (81%) after relaxation agrees well with its better nanosheet orientation. The average fatigue cycles to failure approach 16 951 times under 150 MPa maximum tensile loading. Due to a large decrease in the interface thermal resistance, its thermal conductivity approaches ≈ 48.9 W m −1 K −1 . The results also show that the absorbance of Ti 3 C 2 ‐NH 2 based films greatly surpass the maximum of the components in both X‐band frequency and middle infrared range. Particularly, 3rGO/7Ti 3 C 2 ‐NH 2 films exhibit anomalously high absorbance in the middle infrared range (55% for 22 µm thickness). It suggests that this film has good promise as flexible electronic devices with excellent mechanical, EMI shielding, heat dissipation, and thermal accumulation monitoring capabilities.
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