高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (1): 185-192.doi: 10.7503/cjcu20170318

• 高分子化学 • 上一篇    

Fe3O4@聚吡咯@聚苯胺核壳结构的制备及吸波性能

张龙, 万晓娜, 段文静, 秋虎, 后洁琼, 王晓瑞, 李慧, 杜雪岩()   

  1. 兰州理工大学材料科学与工程学院, 省部共建有色金属先进加工与再利用国家重点实验室, 兰州 730050
  • 收稿日期:2017-05-22 出版日期:2018-01-10 发布日期:2017-12-20
  • 作者简介:联系人简介: 杜雪岩, 男, 博士, 教授, 主要从事磁性纳米复合材料的制备、 表征及性能研究. E-mail:duxy@lut.cn
  • 基金资助:
    国家自然科学基金(批准号: 51363015)、 省部共建有色金属先进加工与再利用国家重点实验室开放课题(批准号: SKLAB02015009)和浙江省自然科学基金(批准号: LQ15E030001)资助

Synthesis and Microwave Absorption Performance of Fe3O4@PPy@PANI Composites

ZHANG Long, WAN Xiaona, DUAN Wenjing, QIU Hu, HOU Jieqiong, WANG Xiaorui, LI Hui, DU Xueyan*()   

  1. School of Materials & Science, State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
  • Received:2017-05-22 Online:2018-01-10 Published:2017-12-20
  • Contact: DU Xueyan E-mail:duxy@lut.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.51363015), the Open Project Program of Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, China(No.SKLAB02015009) and the Zhejiang Provincial Natural Science Foundation, China(No.LQ15E030001)

摘要:

用聚吡咯(PPy)对溶剂热法制备的Fe3O4纳米颗粒进行表面修饰, 再用聚苯胺(PANI)调控Fe3O4@PPy复合材料的电磁组成, 制备出具有核壳结构的Fe3O4@PPy@PANI复合吸波材料. 当PPy对Fe3O4纳米颗粒修饰后, PANI极易包覆在纳米颗粒表面. 电磁性能分析结果表明, 当苯胺(An)与Fe3O4@PPy质量比为1/4时, 最小反射损耗值(RLmin)达到-39.2 dB; 当An与Fe3O4@PPy的质量比为1/2时, 反射损耗小于-10 dB的频宽达到4.6 GHz. 电磁成分比例对复合材料的吸波性能有较大的影响, 随着聚苯胺含量的增加, 电磁吸收呈现先增加后减小的趋势.

关键词: 溶剂热法, 核壳结构, 吸波材料, 导电聚合物, Fe3O4纳米颗粒, 聚吡咯, 聚苯胺

Abstract:

Polypyrrole(PPy) was used to modify the surface of Fe3O4 nanoparticles which was prepared by solvothermal method. Polyaniline(PANI) was used to control the electromagnetic component of Fe3O4@PPy composites, and then Fe3O4@PPy@PANI composites with core-shell structure were successfully prepared. Modifying Fe3O4 nanoparticles with PPy made PANI easily coated on the surface of magnetic nano-particles, and the reasons for this phenomenon were discussed in this paper. The results of the electromagnetic performance analysis show that the minimum reflection loss(RLmin) reaches -39.2 dB when the mass ratio of aniline(An) to Fe3O4 @PPy is 1∶4. The bandwidth of reflection loss less than -10 dB is 4.6 GHz when the mass ratio of An to Fe3O4 @PPy is 1∶2. The proportion of electromagnetic components have a greater impact on the microwave absorbing properties, which are also described in this article.

Key words: Solvothermal method, Core-shell structure, Microwave absorbing material, Conductive polymer, Fe3O4 nanoparticles, Polypyrrole, Polyaniline

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