Controlled synthesis and microwave absorption properties of Ni0.6Zn0.4Fe2O4/PANI composite via an in-situ polymerization process
Controlled synthesis and microwave absorption properties of Ni0.6Zn0.4Fe2O4/PANI composite via an in-situ polymerization process
复制标题
原位聚合工艺控制 Ni0.6Zn0.4Fe2O4/PANI 复合材料的合成及其微波吸收性能
DOI：
10.1016/j.jmmm.2014.10.066
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发表时间：
2015-03-01
影响因子：
2.7
通讯作者：
Du, Youwei
中科院分区：
文献类型：
--
作者：
Wang, Min;Ji, Guangbin;Du, Youwei
采用原位聚合法制备了导电聚苯胺(PANI)和镍锌铁氧体二元复合材料，并对其电磁吸收性能进行了研究。红外光谱显示了PANI峰(1562、1481、1301、1109和799 cm(-1))和NiZn铁氧体的键(579和390 cm(-1))，表明复合材料中同时存在NiZn铁氧体粒子和PANI。随着镍锌铁氧体含量的增加，与纯PAN相比，复合材料呈不规则分布！和Ni0.6Zn0.4Fe2O4。不同摩尔比的纯PANI和PANI/Ni0.6Zn0.4Fe2O4复合材料的TG曲线表明，铁素体在复合材料中的含量增加。此外，我们还发现，通过调节合适的Ni0.6Zn0.4Be2O4与PANI的摩尔比，可以获得良好的电磁吸收性能和较宽的吸收带宽。在摩尔比为1：2时，Ni0.6Zn0.4Be2O4/PANI的最大反射损耗可达-41dB，吸收层厚度为2.6 mm时，-10dB以上的带宽可达5 GHz，这主要是由于材料的磁损耗增大和阻抗匹配好所致。因此，Ni0.6Zn0.4Fe2O4/PANI铁氧体复合材料有望成为一种新型的微波吸收材料。(C)2014爱思唯尔B.V.保留所有权利。
The binary composites of conducting polyaniline (PANI) and nickle zinc ferrite were synthesized by an in-situ polymerization process, and the electromagnetic absorption properties of the composites were also investigated. The FT-IR spectra present the peaks of PANI (1562,1481, 1301,1109, and 799 cm(-1)) and the bonds of NiZn ferrite (579 and 390 cm(-1)), indicating the existence of both NiZn ferrite particles and PANI in the composites. With the increasing ratio of nickle zinc ferrite, the composites distributes in irregular compared with pure PAN! and Ni0.6Zn0.4Fe2O4. The TG curves of the pure PANI and PANI/Ni0.6Zn0.4Fe2O4 composites with different molar ratios clearly show the increase percentage of the ferrite in the composites. Furthermore, we found that the excellent electromagnetic absorption properties and wide absorption bandwidth can be achieved by adjusting proper molar ratios Ni0.6Zn0.4Be2O4 to PANI. The maximum reflection loss of Ni0.6Zn0.4Be2O4/PANI can reach to -41 dB at 12.8 GHz and the bandwidth exceeding -10 dB can reach to 5 GHz with the absorber thickness of 2.6 mm at the molar ratio of 1:2. This can be attributed to the enhancing magnetic loss and the better impedance matching. Therefore, Ni0.6Zn0.4Fe2O4/PANI ferrite composites can become a new kind of candidate in the held of the microwave absorbing. (C) 2014 Elsevier B.V. All rights reserved.