Fe3O4@聚吡咯@聚苯胺核壳结构的制备及吸波性能

doi:10.7503/cjcu20170318

高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (1): 185.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()

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^*()

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/Abstract

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(RL_min)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

中图分类号:

O633.5
TM25

TrendMD:

张龙, 万晓娜, 段文静, 秋虎, 后洁琼, 王晓瑞, 李慧, 杜雪岩. Fe₃O₄@聚吡咯@聚苯胺核壳结构的制备及吸波性能. 高等学校化学学报, 2018, 39(1): 185.

ZHANG Long, WAN Xiaona, DUAN Wenjing, QIU Hu, HOU Jieqiong, WANG Xiaorui, LI Hui, DU Xueyan. Synthesis and Microwave Absorption Performance of Fe₃O₄@PPy@PANI Composites^†. Chem. J. Chinese Universities, 2018, 39(1): 185.

图/表 10

Fig.1 TEM images of Fe3O4(A), Fe3O4/PANI(B), Fe3O4@PPy(C) and Fe3O4@PPy@PANI(D—G) (D) S3; (E) S4; (F) S5; (G) S6.

Fig.2 XRD of corresponding to S1—S6(a—f)

Fig.3 FTIR of corresponding to Fe3O4(a), PANI(b), PPy(c), Fe3O4@PPy(d) and Fe3O4@PPy@PANI(S4)(e)

Fig.4 Hysteresis loops of S1—S6(A), enlarged view of magnetization of S1—S6(B) and the relationship between saturation magnetization of S1—S6(C)

Fig.5 Frequency dependence on the real parts(A), imaginary parts(B) of the complex permittivity, dielectric loss tangents(C), real parts(D), imaginary parts(E) of permeability and magnetic loss tangents(F) of S2—S6(a—e)

Fig.6 Microwave re?ection losses(d=2 mm) of samples S2—S6 in the frequency range

Fig.7 Microwave re?ection losses of composites of S2—S6(A —E)d/mm: a. 1; b. 1.5; c. 2; d. 2.5; e. 3; f. 3.5; g. 4; h. 4.5; i. 5.

Fig.8 C0-f curves of S2—S6

Fig.9 Typical Cole-Cole semicircles for S4(A) and S5(B) in the frequency range of 2.0—18.0 GHz

Fig.10 Reflection loss at various thickness and λ/4 thickness of S4(A) and S5(B) on frequencyd/mm: a. 1; b. 1.5; c.2; d.2.5; e.3; f.3.5; g.4; h. 4.5; i. 5.

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Fe₃O₄@聚吡咯@聚苯胺核壳结构的制备及吸波性能

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

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