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A Robust Hierarchical MXene/Ni/Aluminosilicate Glass Composite for High-Performance Microwave Absorption
Wei Luo1,2, Mengya Wang1, Kangjing Wang1
1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|December 13, 2021
Summary
This study introduces a novel method for creating robust microwave absorbing composites using aligned 2D titanium carbide MXene within a glass matrix. The resulting material exhibits exceptional microwave absorption and mechanical strength.
Area of Science:
- Materials Science
- Nanotechnology
- Composite Materials
Background:
- Two-dimensional titanium carbide MXene offers excellent electromagnetic attenuation and mechanical properties for microwave absorbing composites (MACs).
- Incorporating MXene into inorganic matrices is challenging due to its weak thermal stability.
- Developing mechanically robust MACs with high performance remains a key research area.
Purpose of the Study:
- To develop a novel strategy for fabricating mechanically robust microwave absorbing composites (MACs) using MXene.
- To overcome the thermal stability limitations of MXene in inorganic matrices.
- To enhance the microwave absorption capabilities and mechanical properties of the composite material.
Main Methods:
- Fabrication of a hierarchical aluminosilicate glass composite using EMT zeolite via an ultralow temperature sintering strategy.
- Facilitation of MXene alignment within the glass matrix.
- In situ formation of Nickel (Ni) nanoparticles through ion exchange.
Main Results:
- Achieved highly oriented MXene and a mesoporous structure, reducing conduction loss and maintaining polarization loss.
- Ni nanoparticles acted as a synergistic modulator, improving attenuation and impedance matching.
- Demonstrated a low reflection loss of -59.5 dB in the X band and values below -20 dB from 4 to 18 GHz.
- The composite exhibited remarkable fracture strength and contact-damage resistance.
Conclusions:
- The developed ultralow temperature sintering strategy successfully integrates MXene into a robust glass matrix.
- The hierarchical structure and Ni nanoparticles significantly enhance microwave absorption performance.
- The resulting mesoporous glass composite functions as a structural MAC with superior comprehensive performance.
