Abstract
The rapid development of additive manufacturing technology has offered a new avenue for designing and fabricating high wave-absorbing meta structures.In this study,the mechanical properties and broadband absorption performance of Poly-Ether-Ether-Ketone(PEEK)-based elec-tromagnetic wave-absorbing composite materials was investigated.The high-performance polymer PEEK was used as the matrix,and the materials with electromagnetic wave loss,such as reduced gra-phene oxide,Carbonyl Iron(CI),and Flake CI(FCI),were used as absorbers.Based on the theory of impedance matching,a wave-absorbing structure with a gradual impedance gradient was designed and printed.The test results showed that at the 2.0-18.0 GHz frequency band,the coverage rate of the effective absorption bandwidth was up to 72.0％,the average optimal reflectivity was-18.09 dB,and the wide-angle absorption range was 0°-30°.The advantages of additive manufactur-ing technology in designing and fabricating wave-absorbing structures are presented,demonstrating that the technology is an effective method for creating broadband absorbing structures.
基金项目
National Natural Science Foundation of China(12272298)
NETL
NSTL
万方数据