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涂料工业  2018, Vol. 48 Issue (8): 1-006    https://doi.org/10.12020/j.issn.0253-4312.2018.8.1
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核壳型Fe3O4-聚吡咯电磁屏蔽填料的制备与表征
孙琳1,徐跃1,林鹏1,苏孟兴2,3,王晶晶2,3
1. 中车青岛四方机车车辆股份有限公司,山东青岛 266111; 2. 中国船舶重工集团公司七二五研究所厦门分部,福建厦门 361101; 3. 腐蚀与防护科技重点实验室,福建厦门 361101
Preparation and Characterization of Core Shell Fe3O4-Polypyrrole Microsphere Filler for Electromagnetic Shielding
Sun Lin1, Xu Yue1,Lin Peng1, Su Mengxing2,3,Wang Jingjing2,3
1. CRRC Qingdao SiFang Co., Ltd., Qingdao,Shandong 266111, China; 2. Xiamen Branch of Luoyang Ship Material Research Institute, CSIC, Xiamen,Fujian 361101,China; 3. State Key Laboratory for Marine Corrosion and Protection, Xiamen,Fujian 361101,China
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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Fe3+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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孙琳
关键词:  高速列车  电磁屏蔽涂层  Fe3O4-聚吡咯  复合微球  填料    
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 Fe3+ 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.
Key words:  high speed train    electromagnetic shielding coating    shielding coating    Fe3O4-polypyrrole; composite microsphere    filler
收稿日期:  2017-11-22      修回日期:  2018-06-15           出版日期:  2018-08-01      发布日期:  2018-09-13      期的出版日期:  2018-08-01
ZTFLH:  TQ630.4  
基金资助: 装备预研基金项目
通讯作者:  孙琳    E-mail:  sunlin0218@163.com
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): 1-006.
Sun Lin, Xu Yue, Lin Peng, Su Mengxing, Wang Jingjing, . Preparation and Characterization of Core Shell Fe3O4-Polypyrrole Microsphere Filler for Electromagnetic Shielding. Paint & Coatings Industry, 2018, 48(8): 1-006.
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http://manu65.magtech.com.cn/Jwk3_tlgy/CN/10.12020/j.issn.0253-4312.2018.8.1  或          http://manu65.magtech.com.cn/Jwk3_tlgy/CN/Y2018/V48/I8/1
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