研究目的
Investigating the fabrication and performance of a dielectric-dielectric composite (SRGA) for electromagnetic wave absorption, integrating Ag(I)-Schiff base coordination compounds (SSBCC) with three-dimensional reduced graphene aerogel (3D-rGA) powders.
研究成果
The study successfully fabricated a dielectric-dielectric MA absorber, SRGA, which showed excellent electromagnetic wave absorption properties. The enhanced performance was attributed to 3D-conductive-network units, increased pathway for transmission, enhanced dielectric polarization, and more interfaces prompting interface polarization. The approach is environment-friendly and energy-saving, sustainable for engineering application.
研究不足
The 3D-rGA based materials might be put into practical application only in powder state due to the very low strength of the buck state.
1：Experimental Design and Method Selection:
The study involved the synthesis of SSBCC and its integration with 3D-rGA powders to form SRGA. The methodology included FT-IR, SEM, BET, XRD, Raman spectroscopy, and vector network analysis for EM parameter collection.
2：Sample Selection and Data Sources:
Samples were prepared with different weight ratios of SSBCC to 3D-rGA powders, marked as SRGA-00, SRGA-25, SRGA-50, SRGA-75, and SRGA-
3：List of Experimental Equipment and Materials:
1 Equipment included a Hitachi S-4800 field-emission SEM, Micromeritics ASAP 2010 Surface Area and Porosity Analyzer, D8 Advance Diffractometer, HoloLab series 5000 Raman spectroscopy system, and a vector network analyzer (N5244A). Materials included p-Phenylene diamine, natural graphite powders, benzaldehyde, silver chloride, and anhydrous ethanol.
4：Experimental Procedures and Operational Workflow:
The synthesis of SSBCC, fabrication of SRGA, characterization of materials, and measurement of EM parameters and reflection loss were detailed.
5：Data Analysis Methods:
The reflection loss was calculated through the generalized transmission line theory, and the dependency of conductivity on frequency was analyzed.
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