Professor Gong Chunhong’s research group from the School of Chemistry and Chemical Engineering and the Institute of Functional Polymer Composite Materials of Henan University has conducted research on high-temperature microwave absorption, "TiN/BN Composite with Excellent Thermal

Henan University School of Chemistry and Chemical Engineering, Research Institute of Functional Polymer Composite Materials Professor Gong Chunhong’s research groupAbout High-temperature microwave absorption's research work "TiN/BN Composite with Excellent Thermal Stability for Efficiency Microwave Absorption in Wide Temperature Spectrum" in Materials Published in the international journal Journal of Materials Science & Technology (JMST, 2022, 130, 249-255. DOI: 10.1016/j.jmst.2022.04.050, impact factor 8.067). Professor Gong Chunhong's research group has been mainly engaged in the structural design, microstructure and electromagnetic properties of electromagnetic shielding and absorbing materials for many years. The relevant research results are in J. Mater. Chem., Composites Part B, J. Phys. Chem. C, Appl . Phys. Lett., Nanotechnology and other internationally renowned journals.

With the explosive growth of electronic information, the miniaturization and integration of information terminals have led to a large accumulation of thermal radiation and congestion and mutual interference of electromagnetic channels in various frequency bands. In addition, the rapid development of radar detection technology in the modern military field has also increased the demand for the survival and penetration capabilities of weapons and equipment in harsh conditions. Therefore, electromagnetic wave absorbing materials suitable for high temperature environments are in urgent demand in civil, commercial, military and aerospace aircraft services in extreme environments.

In this work, a TiN/BN composite material was constructed using titanium nitride (TiN) as the loss unit and boron nitride (BN) as the impedance matching unit. The introduction of insulating BN not only effectively adjusts and optimizes the conductivity and impedance matching of the material, but also gives it stable cyclic microwave absorption characteristics, providing new design ideas for efficient and temperature-insensitive microwave absorption materials. This research is an innovative research by the research team in the field of high-temperature electromagnetic wave absorption. Shi Yupeng, a 2017 master's student, is the first author of , Professor Gong Chunhong is the corresponding author, and Henan University is the first signing unit.

This work was funded by the National Natural Science Foundation-Henan Joint Fund "Key Support Project", National Natural Science Foundation General Fund, National College Student Innovation and Entrepreneurship Training Program project funds, and also received funding from the School of Chemistry and Chemical Engineering, Strong support from the Nanomaterials Engineering Research Center, Henan Industrial Cooling Water Recycling Engineering Technology Research Center and the Functional Polymer Composite Materials Research Institute.

Source: Henan University

Paper link:

https://www.sciencedirect.com/sdfe/reader/pii/S1005030222004625/pdf