聚合物先驱体转化陶瓷材料 3D 打印及其电磁波吸收性能

Electromagnetic wave (EMW) absorbing materials have shown great significance in the fields of electromagnetic pollution and military operations. In recent years, precursor-derived ceramics (PDC) have been widely concerned due to their mild preparation conditions and excellent EMW absorption, mechanics, temperature resistance, and oxidation resistance properties. To achieve high-precision molding of PDC with controlled structures, advanced 3D printing technology has gradually attracted attention and is being applied. PDC EMW absorbing materials that presented wide bandwidth and high absorption properties or multiple functions were obtained by designing their composition and structure. This brings new development directions for novel high-performance EMW absorbing materials. Here, the structural characteristics and preparation process of PDC were reviewed. Afterwards, a systematic summary was conducted on the research progress of PDC material extrusion (ME) 3D printing technology and photopolymerization (VPP) 3D printing technology. Finally, the research progress of PDC EMW absorption materials was comprehensively reviewed and the perspective on future directions was also been discussed. The review is expected to provide reference for future research on PDC EMW absorbing materials.