| 核壳型Fe3O4-聚吡咯电磁屏蔽填料的制备与表征 |
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| 引用本文： | 孙琳,徐跃,林鹏,苏孟兴,王晶晶. 核壳型Fe3O4-聚吡咯电磁屏蔽填料的制备与表征[J]. 涂料工业, 2018, 48(8): 1-6. DOI: 10.12020/j.issn.0253-4312.2018.8.1 |
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| 作者姓名： | 孙琳 徐跃 林鹏 苏孟兴 王晶晶 |
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| 作者单位： | 1.中车青岛四方机车车辆股份有限公司,山东青岛 2661112.中国船舶重工集团公司七二五研究所厦门分部,福建厦门 3611013.腐蚀与防护科技重点实验室,福建厦门 361101 |
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| 基金项目： | 装备预研基金项目(9140A12050315CB55169) |
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| 摘 要： | 采用一步刻蚀法制备了核壳Fe3O4-聚吡咯(Fe3O4-PPy)复合微球,并采用FT-IR、XRD、TG和矢量网络分析仪对其结构和电磁参数进行了表征。结果表明:盐酸刻蚀产生的Fe 3+引发了吡咯在Fe3O4微球表面的聚合。扫描电镜与透射电镜证实了其核壳结构;FT-IR谱图证明了聚吡咯的生成;XRD谱图证明了在反应过程中核的晶型没有变化。热重曲线与磁滞回线表明:随着反应时间的延长,Fe3O4的含量减少而聚吡咯的含量增加。当反应时间为5 min时,该样品的吸波性能最优,最低反射损耗为-41.9 dB,有效吸收带宽达到6 GHz。Fe3O4-PPy基电磁屏蔽涂层在30 MHz~1 GHz的电磁屏蔽效能≥36 dB。
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| 关 键 词： | 高速列车 电磁屏蔽涂层 Fe3O4-聚吡咯 复合微球 填料 |
| 收稿时间： | 2018-06-11 |
Preparation and Characterization of Core Shell Fe3O4-Polypyrrole Microsphere Filler for Electromagnetic Shielding |
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| Lin Sun,Yue Xu,Peng Lin,Mengxing Su,Jingjing Wang. Preparation and Characterization of Core Shell Fe3O4-Polypyrrole Microsphere Filler for Electromagnetic Shielding[J]. Paint & Coatings Industry, 2018, 48(8): 1-6. DOI: 10.12020/j.issn.0253-4312.2018.8.1 |
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| Authors: | Lin Sun Yue Xu Peng Lin Mengxing Su Jingjing Wang |
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| Affiliation: | 1.CRRC Qingdao SiFang Co., Ltd., Qingdao,Shandong 266111, China2.Xiamen Branch of Luoyang Ship Material Research Institute, CSIC, Xiamen,Fujian 361101,China3.State Key Laboratory for Marine Corrosion and Protection, Xiamen,Fujian 361101,China |
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| Abstract: | Core shell Fe3O4-polypyrrole composite microspheres were prepared by one-step etching method, and their structures and electromagnetic parameters were characterized by FT-IR, XRD, TG and vector network analyzer. The results showed that the Fe 3+ produced by hydrochloric acid etching initiated the polymerization of pyrrole on the surface of Fe3O4 microspheres. The core-shell structure was confirmed by scanning electron microscopy and transmission electron microscopy. The formation of polypyrrole was confirmed by FT-IR spectra. The XRD spectra showed that the crystal shape of the nuclei did not change during the reaction. The thermo-gravimetric curve and hysteresis regression lines showed that the content of Fe3O4 decreased and the content of polypyrrole increased with the increase of reaction time. When the reaction time was 5 minutes, the sample had the best microwave absorbing performance, the lowest reflection loss was -41.9 dB, and the effective absorption bandwidth was 6 GHz.The electromagnetic shielding effectiveness of Fe3O4-polypyrrole based coating was ≥36 dB in the 30 MH~1 GHz band. |
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| Keywords: | high speed train electromagnetic shielding coating Fe3O4-polypyrrole composite microspheres filler |
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