Journal
ADVANCED SCIENCE
Volume 9, Issue 4, Pages -Publisher
WILEY
DOI: 10.1002/advs.202104163
Keywords
hierarchical glass composite; mechanical properties; microwave absorption; MXene; sintering
Categories
Funding
- National Natural Science Foundation of China [52122203, 51822202, 51972053, 52173233]
- Innovation Program of Shanghai Municipal Education Commission [2021-01-07-00-03-E00109, 2017-01-07-00-03-E00025]
- Science and Technology Commission of Shanghai Municipality [19520713200]
- Shuguang Program by Shanghai Education Development Foundation
- Shanghai Municipal Education Commission [20SG33]
- Shanghai Scientific and Technological Innovation Project [19JC1410400]
- Key Basic Research Program of Science and Technology Commission of Shanghai Municipality [20JC1415300]
- Fundamental Research Funds for the Central Universities
- DHU Distinguished Young Professor Program
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By utilizing an ultralow temperature sintering strategy, a hierachical aluminosilicate glass composite with highly oriented MXene has been successfully fabricated, exhibiting excellent electromagnetic properties and mechanical performance.
The 2D titanium carbide MXene with both extraordinary electromagnetic attenuation and elastic properties has shown great potential as the building block for constructing mechanically robust microwave absorbing composites (MACs). However, the weak thermal stability has inhibited the successful incorporation of MXene into the inorganic MACs matrix so far. Herein, an ultralow temperature sintering strategy to fabricate a hierarchical aluminosilicate glass composite is demonstrated by using EMT zeolite as starting powder, which can not only endow the composites with high sinterability, but also facilitate the alignment of MXene in the glass matrix. Accordingly, the highly oriented MXene and mesoporous structure can effectively reduce the conduction loss in the out-of-plane direction while maintaining its large polarization loss. Meanwhile, the in situ formed Ni nanoparticles via ion exchange serve as a synergistic modulator to further improve the attenuation capability and impedance matching of composite, resulting in a low reflection loss of -59.5 dB in X band and general values below -20 dB with a low fitting thickness from 4 to 18 GHz. More attractively, such a delicate structure also gives the composite a remarkable fracture strength and contact-damage-resistance, which qualifies the mesoporous glass composite as a structural MACs with a superior comprehensive performance.
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