Industry new knowledge
Recently, the team led by Daoyang Han and Gang Shao of Zhengzhou University published a Excellent microwave absorption property of 3D printed SiCN matrix metamaterial in "Journal of the European Ceramic Society" and introduced how to passDigital Light Processing (DLP)3D Printing TechnologyPreparation of high mechanical properties and microwave absorption properties.Silicon Carbonitride (SiCN) Electromagnetic Wave Absorbing Metamaterials.
Original link: https://doi.org/10.1016/j.jeurceramsoc. 2024.04.021
Adventure Technology official website: http://www.adventuretech.cn/
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research content
With the combination of 3D printing technology, polymer derived ceramics (PDC) and electromagnetic wave (EMW) absorption metamaterials, it provides a new solution for spacecraft stealth in extreme environments, and gradually receives attention. Although the 3D printing research of SiOC has been quite extensive, SiCN is more favored due to its higher temperature stability and mechanical properties. However, the preparation of SiCN metamaterials with both high mechanical and microwave absorption properties by 3D printing is still challenging.This study demonstrates a SiCN EMW absorbing metamaterial with high mechanical properties prepared using digital light processing (DLP)3D printing technology.
Figure 1,(a) Chemical formula of chemical reagent used to prepare UV curable resin. (B) A schematic diagram of the preparation process from the precursor to the ceramic.
Figure 2, (a) FTIR spectral analysis of ceramic polymer resin at different stages. (B) is a partial magnified view of the FTIR spectrum.
Figure 3, the chemical reaction of PSN/TMPTA system in the process of photopolymerization. (a) Copolymerization between an acrylate group and a vinyl group. (B) Homopolymerization between acrylate groups.
4, Compressive strength of three different unit sizes of SiCN skeleton.
5, microstructure of the printed SiCN framework.
6, (a) XRD of ceramics pyrolyzed at 1100°C. (B) Raman of the ceramic pyrolyzed at 1100°C.
7, relative composite dielectric constants and loss tangents for three different unit sizes of SiCN skeletons.
8, RL values for three different unit sizes of SiCN frameworks.
9, Impedance matching ratio and attenuation coefficient of three different unit sizes of SiCN skeleton.
△ Figure 10, An illustration of the multi-scale absorption mechanism of the SiCN EMW-absorbing metamaterial.
research conclusion
SiCN metamaterials with high mechanical strength and excellent microwave absorption properties were successfully prepared by light-curing DLP 3D printing technology. At a thickness of 4.6mm, the material can achieve electromagnetic wave absorption in the entire X-band (8.2 to 12.4 GHz), with a minimum reflection loss of -31.01 dB, which is equivalent to an absorption rate of 99.9 percent. This study provides a basis for high-speed aircraft and weapons inThe need for stealth under high temperature conditions provides a flexible design and manufacturing solution.
In this paper, we explore in depthApplication of light-curing DLP 3D printing technology in the preparation of SiCN metamaterials,And demonstrated its excellent microwave absorption performance. As a professional manufacturer of light-curing DLP 3D printing equipment, we are proud to provide technical support for such innovative research.
Our equipment not only reaches the industry-leading level in precision and efficiency, but also has a lot of optimization in material compatibility and printing stability. We understand the complexity and challenges of scientific research, so we are committed to providing customized 3D printing solutions to meet the unique needs of different research fields.
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