Absorbing materials are materials that can effectively absorb electromagnetic waves and are widely used in military, communication, radar, and other fields.
Honeycomb core structure absorbing materialAs a new type of absorbing material, it has attracted much attention for its unique sandwich structure and excellent absorbing performance. This article will focus on introducing the advantages and research progress of this material.
1、 Advantages of honeycomb core structure
1. The sandwich structure increases the absorption effect: The honeycomb core structure adopts a honeycomb shape, with the center being the absorbing material, which can achieve better absorption effect by adjusting geometric parameters. The surface of the honeycomb core in the sandwich structure is coated with an absorbing material coating, or the honeycomb core structure is directly made of absorbing composite materials, which increases the effective thickness of the incident electromagnetic waves and expands the absorption bandwidth.
2、 Research achievements of advanced institute technology
1. Thin layer of epoxy resin/glass fiber composite material: Advanced Institute Technology uses this material as the panel material for multi-layer sandwich structure, combined with MWCNT added epoxy resin/glass fiber composite material to make honeycomb core. Within the frequency range of 3-16 GHz, the sample exhibits absorption performance of less than -10 dB, with a maximum reflection loss of approximately -36 dB.
2. Chemical nickel plating improves electromagnetic properties: The electromagnetic properties of glass fibers were improved by chemical nickel plating, and a honeycomb core structure absorbing composite material based on epoxy resin was prepared. Unlike traditional honeycomb core structures, this method does not add conductive particles or metal magnetic micro powders, and only uses nickel plated fibers to enhance the material's absorption performance. The results show that the reflection loss is less than -10 dB in the range of 5.8-18 GHz, and the maximum reflection loss is about -29 dB.
3、 Future Development Trends
1. Optimization of multi-layer sandwich structure: Researchers can further optimize the design of multi-layer sandwich structures by changing the combination of panels and sandwich layers to improve absorption performance. For example, it is possible to try using interlayer composite structures of different materials to increase the absorption effect.
2. Introduction of new absorbing materials: In addition to existing absorbing materials, it is also possible to consider introducing new absorbing materials such as graphene, nanoparticles, etc. to improve the absorption capacity and bandwidth of honeycomb core structure absorbing materials.
Conclusion:
Honeycomb core structure absorbing materialDue to its unique sandwich structure and excellent absorbing performance, it has become an important research direction in the field of absorbing materials. The research achievements of Advanced Institute Technology in epoxy resin/glass fiber composite materials and electroless nickel plating technology provide new development ideas for this field. In the future, with the continuous deepening of research, honeycomb core structure absorbing materials are expected to play a greater role in military, communication and other fields.
