Preparation and dual microwave-absorption properties of carboxylic poly(arylene ether nitrile)/Fe3O4 hybrid microspheres |
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Authors: | Zhen MaFanbin Meng Rui ZhaoYingqing Zhan Jiachun ZhongXiaobo Liu |
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Institution: | Research Branch of Advanced Functional Materials, Institute of Microelectronic and Solid State Electronic, University of Electronic Science and Technology of China, Chengdu 610054, PR China |
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Abstract: | The carboxylic poly(arylene ether nitrile)/Fe3O4 hybrid microspheres were prepared via solvothermal method. The carboxylic poly(arylene ether nitrile) (PEN-COOH) was introduced into the Fe3O4 microspheres by chemisorption with mass content up to 15% as defined by infrared spectra and thermal gravimetric analysis. The hybrid sphere is of hierarchical polymer-inorganic microstructure as observed by transmission electron microscopy. The microwave-absorption of the sample owns a shifting peak and a special immobilized peak with the variation of absorber thickness from 3 to 5 mm. Maximum microwave-absorption of the product is capable of over −30 dB in the range of 10-12 GHz. By proposed equivalent filter circuit model, the immobilized peak was attributed to the ordered nanostructure where the Fe3O4 nanocrystals were isolated by PEN-COOH. The product has the potential to be applied as microwave absorber with high microwave-absorption, good dispersibility and robust polymer-inorganic interfacial adherence. |
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Keywords: | Microwave-absorption Magnetite Carboxylic poly(arylene ether nitrile) Nanostructure |
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