铜钴镍铁氧体/聚苯胺复合物的制备及其性能研究
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摘要
采用水热法制备了铜钴镍铁氧体粉末,并以原位聚合法制备了铜钴镍铁氧体/聚苯胺复合物,利用FESEM、XRD、FT-IR、TG和矢量网络分析仪对其结构和吸波性能进行研究。结果表明,经聚苯胺包覆后的铜钴镍铁氧体表面形貌由球形变为珊瑚状;利用盐酸掺杂后的聚苯胺有部分结晶,且铜钴镍铁氧体离子与聚苯胺分子之间存在化学键合作用;与聚苯胺相比,复合材料在2. 0～18. 0 GHz范围具有优异的吸波性能,在厚度为2. 0 mm时,铜钴镍铁氧体质量分数为30%时的复合材料有最大反射损耗,达到-26. 81 dB,-17 dB带宽大于5 GHz,且随着厚度的增加,反射损耗值会向低频方向移动。
Copper-cobalt-nickel ferrite powders are prepared through hydrothermal method and then copper-cobaltnickel ferrite/polyaniline composites are prepared via in-situ polymerization.The structure and wave absorbing properties of the composites are investigated by means of FESEM,XRD,FT-IR,TG and Vector network analyzer.It is indicated that the surface morphology of copper-cobalt-nickel ferrite changes from spherical into coral after being coated with polyaniline.Polyaniline doped with hydrochloric acid has part of crystalline.There is a chemical bond interaction between copper-cobalt-nickel ferrite ion and polyaniline molecular. Compared with polyaniline,the composite material has excellent microwave absorbing properties in the range of 2. 0 to 18. 0 GHz. At a thickness of 2. 0 mm,the composite material with a cobalt-nickel ferrite content of 30% has a maximum reflection loss of-26. 81 d B.The-17 d B bandwidth is greater than 5 GHz.As the thickness of material increases,the reflection loss value will shift toward the low frequency direction.
Copper-cobalt-nickel ferrite powders are prepared through hydrothermal method and then copper-cobaltnickel ferrite/polyaniline composites are prepared via in-situ polymerization.The structure and wave absorbing properties of the composites are investigated by means of FESEM,XRD,FT-IR,TG and Vector network analyzer.It is indicated that the surface morphology of copper-cobalt-nickel ferrite changes from spherical into coral after being coated with polyaniline.Polyaniline doped with hydrochloric acid has part of crystalline.There is a chemical bond interaction between copper-cobalt-nickel ferrite ion and polyaniline molecular. Compared with polyaniline,the composite material has excellent microwave absorbing properties in the range of 2. 0 to 18. 0 GHz. At a thickness of 2. 0 mm,the composite material with a cobalt-nickel ferrite content of 30% has a maximum reflection loss of-26. 81 d B.The-17 d B bandwidth is greater than 5 GHz.As the thickness of material increases,the reflection loss value will shift toward the low frequency direction.
引文
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[3]Rao G A,Mahulikar S P.Integrated review of stealth technology and its role in airpower[J]. Aeronautical Journal,2016,106(1066):629-642.
[4]Wu M,Zhang H,Yao X,et al.Microwave characterization of ferrite particles[J].Journal of Physics Appl phys,2001,34(6):889-895.
[5]Wang K,Wan G,Wang G,et al.The construction of carbon-coated Fe3O4yolk-shell nanocomposites based on volume shrinkage from the release of oxygen anions for wide-band electromagnetic wave absorption[J].J Colloid Interface Sci,2018,511:307-317.
[6]Ooi S,Morimoto S,Sanada M. Performance evaluation of a high power density PMASynRM with ferrite magnets[C]//Energy Conversion Congress and Exposition.IEEE,2011:1308-1315.
[7]Macdiarmid A G,Chiang J C,Richter A F,et al.Polyaniline:A new concept in conducting polymers[J]. Synthetic Metals,1987,18(1):285-290.
[8]Dhawan S K,Singh N,Rodrigues D.Electromagnetic shielding behaviour of conducting polyaniline composites[J]. Science&Technology of Advanced Materials,2003,4(2):105-113.
[9]Zuo Y,Yao Z,Lin H,et al.Coralliform Li0.35Zn0.3Fe2.35O4/polyaniline nanocomposites:Facile synthesis and enhanced microwave absorption properties[J].Journal of Alloys&Compounds,2018,746:496-502.
[10]Ali N N,Atassi Y,Salloum A,et al.Comparative study of microwave absorption characteristics of(Polyaniline/Ni Zn ferrite)nanocomposites with different ferrite percentages[J].Materials Chemistry&Physics,2018,211:79-87.
[11]Rui-Ting,Huai-Yu,Shang,et al.Dielectric,magnetic and microwave absorbing properties of polyaniline-Co0.7Cr0.1Zn0.2Fe2O4composites[J].Rare Metals(English),2017,36(2):118-122.
[12]Luo J,Zuo Y,Shen P,et al.Excellent microwave absorption properties by tuned electromagnetic parameters in polyaniline-coated Ba0.9La0.1Fe11.9Ni0.1O19/reduced graphene oxide nanocomposites[J].Rsc Advances,2017,7(58):36433-36443.
[13]王海花,罗璐,李小瑞,等.聚苯胺/四氧化三铁吸波材料的制备与性能[J].精细化工,2017,34(9):988-995.
[14]Findlay M W,Rennert R C,Sorkin M,et al. Controlled synthesis and microwave absorption properties of Ni0.6Zn0.4Fe2O4/PANI composite via an in-situ polymerization process[J].Journal of Magnetism&Magnetic Materials,2015,377(377):52-58.
[15]Ting T H,Yu R P,Jau Y N. Synthesis and microwave absorption characteristics of polyaniline/Ni Zn ferrite composites in 2-40 GHz[J].Materials Chemistry&Physics,2011,126(1):364-368.
[16]赵海涛.纳米镍铁氧体及其复合材料的制备及电磁微波吸收性能研究[D].沈阳:东北大学,2009.