| 引用本文: | 张家瑞,田晓霞,蒙澳,赵云彤,曹建文,肖雷,韩丰庆.钴铁氧体/聚吡咯复合材料的制备及电磁性能[J].材料科学与工艺,2020,28(5):22-30.DOI:10.11951/j.issn.1005-0299.20190307. |
| ZHANG Jiarui,TIAN Xiaoxia,MENG Ao,ZHAO Yuntong,CAO Jiangwen,XIAO Lei,HAN Fengqing.Preparation and electromagnetic performance of CoFe2O4/PPy composites[J].Materials Science and Technology,2020,28(5):22-30.DOI:10.11951/j.issn.1005-0299.20190307. |
|
| |
|
|
| 本文已被：浏览 522次 下载 628次 |
码上扫一扫！ |
|
|
| 钴铁氧体/聚吡咯复合材料的制备及电磁性能 |
|
张家瑞1,田晓霞1,2,蒙澳3,赵云彤3,曹建文3,肖雷3,韩丰庆1,3
|
|
(1.空军工程大学 防空反导学院学员二大队, 西安 710051; 2.空军工程大学 基础部, 西安 710051; 3.空军工程大学 航空航天工程学院学员四大队, 西安 710051)
|
|
| 摘要: |
| 首先采用溶胶-凝胶法制备钴铁氧体,再使用水热原位合成钴铁氧体(CoFe2O4,CFO)/聚吡咯(polypyrrole,PPy)新型复合材料。采用X射线衍射仪(XRD)分析样品的相结构、扫描电子显微镜(SEM观察样品微观形貌、振动样品磁场计(VSM)测试样品磁性能表征样品磁性能、样品的电磁参数采用矢量网络分析仪分析,计算获得样品在(8～12)GHz频率范围内的反射损耗。结果表明:在以酒石酸为络合剂、pH=5左右、经650 ℃热处理,得到结晶度良好的尖晶石结构钴铁氧体,平均粒径为350 nm；原位聚合后得到的钴铁氧体/聚吡咯复合材料表现出良好的吸波性能,在涂层厚度1.5 mm,PPy含量为6%时,吸波性能最佳,在频率为8.66 GHz处达到-11.05 dB,小于-5 dB的频段范围为(7.49~11.43)GHz,其可作为一种轻质、宽频的雷达波吸收剂来使用。 |
| 关键词: 钴铁氧体/聚吡咯复合物 制备 电磁性能 |
| DOI：10.11951/j.issn.1005-0299.20190307 |
| 分类号:TB33 |
| 文献标识码:A |
| 基金项目:国家自然科学基金资助项目(21471159);陕西省自然科学基金资助项目(2019JZ-40);国家级大学生创新创业计划项目(201890052006);空军工程大学基础部课题项目(YNJC19070601,JK2019115). |
|
| Preparation and electromagnetic performance of CoFe2O4/PPy composites |
|
ZHANG Jiarui1,TIAN Xiaoxia1,2,MENG Ao3,ZHAO Yuntong3,CAO Jiangwen3,XIAO Lei3,HAN Fengqing1,3
|
|
(1.Cadet Brigade 2, Air and Missile Defense College, Air Force Engineering University, Xi′an 710051, China; 2.Department of Basic Sciences, Air Force Engineering University, Xi′an 710051, China; 3.Cadet Brigade 4, Air and Missile Defense College, Air Force Engineering University, Xi′an 710051, China.)
|
| Abstract: |
| CoFe2O4 was prepared by sol-gel method and CoFe2O4/PPy composites were prepared by the hydrothermal method. The microstructure and surface morphologies of the samples were examined by X-ray diffraction, scanning electron microscope. The microwave electromagnetic parameters of the composites were measured by vector network analyzer and the frequency range from 8.0 GHz to 12.0 GHz, according to the simulation calculation of transmission line theory, the absorbing properties were calculated by electromagnetic parameters. The results show that the spinel structure CoFe2O4 can be obtained by annealing at 650 ℃ and tartaric acid as chelate, pH=4～5 of the precursor, and average size of CoFe2O4 crystallite is 350 nm. The microwave absorbing properties of composites exhibited the higher degradation efficiency than CoFe2O4, the sample showed the best absorption performance when the PPy was 6%. The minimum reflection loss value was -11.05 dB at 8.66 GHz with a matching thickness of 1.5 mm. And the absorption band (RL<-5 dB) was 3.94 GHz. CoFe2O4/PPy composites are proved to be excellent wave absorbing materials in view of their lightweight and wideband absorption properties. |
| Key words: CoFe2O4/PPy composites preparation electromagnetic performance. |
|
|
|
|
