3D打印羰基铁粉/聚二甲基硅氧烷柔性复合材料的吸波性能

张雪婷; 周毅; 肖威; 田兆霞; 刘丰华

doi:10.19976/j.cnki.43-1448/TF.2022025

粉末冶金材料科学与工程 >

2022 , Vol. 27 >Issue 4: 442 - 452

DOI: https://doi.org/10.19976/j.cnki.43-1448/TF.2022025

工艺技术

3D打印羰基铁粉/聚二甲基硅氧烷柔性复合材料的吸波性能

张雪婷 ,
周毅 ,
肖威 ,
田兆霞 ,
刘丰华

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1.太原科技大学材料科学与工程学院,太原 030024;
2.中国科学院宁波材料技术与工程研究所,浙江省增材制造材料重点实验室,宁波 315201

收稿日期: 2022-03-13

修回日期: 2022-05-04

网络出版日期: 2022-06-01

基金资助

江苏省产业前瞻与关键核心技术项目(BE2019072); 甘肃省技术创新引导计划区域科技合作专项(ZOJK10QA579)

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Microwave absorbing properties of 3D printed carbonyl powder/polydimethylsiloxane flexible composite

ZHANG Xueting ,
ZHOU Yi ,
XIAO Wei ,
TIAN Zhaoxia ,
LIU Fenghua

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1. School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China;
2. Zhejiang Key Laboratory of Additive Manufacturing Materials, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China

Received date: 2022-03-13

Revised date: 2022-05-04

Online published: 2022-06-01

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摘要

分别以片状羰基铁粉(flake carbonyl iron, FCI)和球状羰基铁粉(spherical carbonyl iron, SCI)作吸波剂,与聚二甲基硅氧烷(polydimethylsioxlane, PDMS)混合制备成打印墨水,采用墨水直写3D打印工艺制备羰基铁粉/聚二甲基硅氧烷(CIP/PDMS)柔性复合吸波材料。研究羰基铁粉(carbonyl iron powder, CIP)的形貌和含量对墨水流变行为和3D直写打印工艺的影响,并通过CST Studio Suite电磁仿真软件研究CIP/PDMS复合吸波材料的电磁反射损耗。结果表明：CIP含量越高,复合材料的吸波性能越好,w(FCI)为30%时FCI/PDMS复合材料具有最佳的吸波性能,厚度为1.8 mm时对频率为10.9 GHz的电磁波具有最强吸收峰,吸收峰值为–34.8 dB,有效吸收带宽(effective absorption bandwidth, EAB, 反射损耗<-10 dB)为4.8 GHz;w(SCI)为80%时SCI/PDMS复合材料具有最佳吸波性能,厚度为t=2.4 mm时对频率为7.3 GHz的电磁波具有最强吸收峰,吸收峰值为–41.5 dB,EAB为3.6 GHz。

关键词： 羰基铁粉; 3D直写打印; PDMS; 复介电常数; 复磁导率; 微波吸收

本文引用格式

张雪婷 , 周毅 , 肖威 , 田兆霞 , 刘丰华 . 3D打印羰基铁粉/聚二甲基硅氧烷柔性复合材料的吸波性能[J]. 粉末冶金材料科学与工程, 2022 , 27(4) : 442 -452 . DOI: 10.19976/j.cnki.43-1448/TF.2022025

Abstract

The printing ink was prepared by mixing flake carbonyl iron powder (FCI) and spherical carbonyl iron powder (SCI) with polydimethylsiloxane (PDMS), respectively. The carbonyl iron powder/polydimethylsiloxane (CIP/PDMS) flexible composite microwave absorbing material was formed by 3D printing with ink direct writing. The effects of the morphology and content of carbonyl iron powder (CIP) on the rheological behavior of ink and 3D direct writing printing process were studied. The electromagnetic reflection loss of CIP/PDMS composite microwave absorbing material was studied as well by CST Studio Suite electromagnetic simulation software. The results show that the higher the CIP content, the better the microwave absorption performance of the composite. When w(FCI) is 30%, the FCI/PDMS composite has the best microwave absorption performance. When the thickness is 1.8 mm, it has the strongest absorption peak for the electromagnetic wave with frequency of 10.9 GHz, the peak value is -34.8 dB, and the effective absorption bandwidth (EAB, RL<-10 dB) is 4.8 GHz. When w(SCI) is 80%, SCI/PDMS composite has the best microwave absorption performance. When the thickness is 2.4 mm, it has the strongest absorption peak for electromagnetic wave with frequency of 7.3 GHz, the peak is -41.5 dB and EAB is 3.6 GHz.

Key words： carbonyl iron powder; 3D direct writing printing; PDMS; complex permittivity; complex permeability; microwave absorption

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