3D printing of PDC-SiOC@SiC twins with high permittivity and electromagnetic interference shielding effectiveness
3D printing of PDC-SiOC@SiC twins with high permittivity and electromagnetic interference shielding effectiveness
复制标题
3D打印具有高介电常数和电磁干扰屏蔽效能的PDC-SiOC@SiC孪生体
DOI：
10.1016/j.jeurceramsoc.2021.04.048
复制
发表时间：
2021-04
影响因子：
5.7
通讯作者：
Cheng Laifei
中科院分区：
文献类型：
--
作者：
Yang Wenqiang;Yang Dou;Mei Hui;Yao Li;Xiao Shanshan;Yao Yongtao;Chen Chao;Cheng Laifei
有效的电磁干扰（EMI）屏蔽需要具有高介电常数的材料。目前的研究报告了用SiC纳米线（SiCnw）改性的3D打印聚合物衍生的SiOC陶瓷（PDC），其在X波段内表现出高的介电常数的真实的和虚部。SEM结果表明，在1500 ℃烧结时，SiOC中存在大量的孔隙和裂纹，且在石墨微晶的存在下，SiCnw在其中沿着均匀生长。在X波段，介电常数的真实的部分在16.6 ~ 28.9之间，虚部在31.7 ~ 34.2之间。该陶瓷的电磁干扰屏蔽效能（SET）可达34.7dB，吸收损耗（SEA）为29.3dB，反射损耗（SER）为5.4dB。同时，在900 ℃烧结温度下，3D打印PDC-SiOC陶瓷具有一定的力学性能，抗压强度为12.57 MPa。
Effective electromagnetic interference (EMI) shielding requires materials with high permittivity. The current study reports 3D printed polymer-derived SiOC ceramics (PDC) modified with SiC nanowires (SiCnw) exhibiting both high real and imaginary parts of permittivity within X-band. SEM results indicated that a large number of pores and cracks exist in the SiOC, and twinned SiCnwwere uniformly grown among them along with the existence of graphite microcrystals when the sintering temperature was 1500 ℃. The real part of permittivity ranged from 16.6 to 28.9 while the imaginary part from 31.7 to 34.2 in X-band. The EMI total shielding effectiveness (SET) of the ceramics could reach 34.7 dB with absorption loss (SEA) of 29.3 dB and reflection loss (SER) of 5.4 dB. Meanwhile, the 3D printed PDC-SiOC ceramics at 900 ℃ sintering temperature possess certain mechanical properties with the magnitude of compressive strength being 12.57 MPa.
登录
查看更多内容
Fe掺杂碳氧化硅纳米复合材料增强电磁波吸收
影响因子：
3.9
作者：
Du Bin;Qian Junjie;Hu Ping;He Chao;Cai Mei;Wang Xuan;Shui Anze
通讯作者：
Shui Anze
影响因子：
9.5
作者：
Han, Meikang;Yin, Xiaowei;Cheng, Laifei
通讯作者：
Cheng, Laifei
影响因子：
2.8
作者：
P. Watts;D. R. Ponnampalam;W. Hsu;A. Barnes;B. Chambers
通讯作者：
P. Watts;D. R. Ponnampalam;W. Hsu;A. Barnes;B. Chambers
影响因子：
3.7
作者：
Chiu, Sheng-Cheng;Yu, Hsin-Chih;Li, Yuan-Yao
通讯作者：
Li, Yuan-Yao
影响因子：
9.1
作者：
Xiaomei Wu;Bianying Wen
通讯作者：
Xiaomei Wu;Bianying Wen