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化工进展  2015 

纳米片组装钴铁氧体微球的制备及其性能

DOI: 10.16085/j.issn.1000-6613.2015.01.036, PP. 203-207

Keywords: 片状组装,钴铁氧体,超声溶剂热法,磁性,吸波性

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Abstract:

采用超声溶剂热法,成功地制备了由片状钴铁氧体(CoFe2O4)自组装的微球。采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)对样品的结构和形貌进行了表征。结果表明,所制备的CoFe2O4微球为立方晶相结构,其粒径分布在20~30μm之间,是由二维纳米片组装而成。用振动样品磁强计(VSM)和网络矢量分析仪分别对纳米片组装微球样品及自制的CoFe2O4粉体的室温磁性和吸波性能进行了测试,结果显示,纳米片组装微球比自制粉体的磁性和微波吸收性能更好,其饱和磁化强度和矫顽力分别达到76.15emu/g和227.89Oe。此外,纳米片组装CoFe2O4微球在频率为6000MHz波段附近有一个明显的吸收峰,回损值大于-18dB,并有继续增大的趋势。说明产物的结构和形貌对其磁性和吸波性都有很大影响。

References

[1]  Lin M F,Shu Y C,Tsen W C,et al. Synthesis of polyurethane-imide (PUimide) copolymers with different dianhydrides and their properties[J]. Polym. Int.,1999,48(4):433-437. 3.0.CO;2-1 target="_blank">
[2]  Rahimi R,Kerdari H,Rabbani M,et al. Characterization and adsorbing properties of hollow Zn-Fe2O4 nanospheres on removal of Congo red from aqueous solution[J]. Desalination,2011,280(1-3) :412-418.
[3]  Eun H J,Jie Y,Ji Hye Hong. Effective preparation of montmorillonite/polyurethane nanocomposites by introducing cationic groups into the polyurethane main chain[J]. European Polymer Journal,2007,43:2286-2291
[4]  Shen Y,Zhao Q D,Li X Y,et al. Surface photovoltage property of magnesium ferrite/hematite heterostructured hollow nanospheres prepared with one-pot strategy[J]. Colloids and Surfaces A:Physicochem. Eng. Aspects,2012,403 :35-40.
[5]  Xin H,Shen Y,Li X. Novel cationic polyurethane-fluorinated acrylic hybrid latexes:Synthesis,characterization and properties[J]. Colloids and Surfaces A,2011,384:205-211.
[6]  Camino G,Duquesne S,Delobel R,et al. Mechanism of expandable graphite fire retardant action in polyarethancs[C]//220th ACS National Meeting. Washington D C,2000.
[7]  Wei J J,Du A Y,Jin F,et al. The preparation and high-frequency electromagnetic properties of ferrimagnetic bisphthalonitrile-Fe3O4 core-shell hollow microspheres[J]. Journal of Magnetism and Magnetic Materials,2013,340 :70-75.
[8]  李荫远,李国栋. 铁氧体物理学[M]. 北京:科学出版社,1978.
[9]  Duquesne S,Bras M L,Bourbigot S,et al. Thermal degradation of polyurethane and polyurethane/expandable graphite coatings[J]. Polym. Degra. Stab.,2001,7493:493-499.
[10]  Teng F,Xu T G,Liang S H. Synthesis of hollow Mn3O4-in-Co3O4 magnetic microspheres and its chemiluminescence and catalytic properties[J]. Catalysis Communications,2008,9(6):1919-1124.
[11]  BrancaC,Blasi C D,Casu A,et al. Reaction kinetics and morphological changes of a rigid polyurethane foam during combustion[J]. Thermochim. Acta,2003,399(8):127-137.
[12]  Zhou J,Wu W,Caruntu D. Synthesis of porous magnetic hollow silica nanospheres for nanomedicine application[J]. J. Phys. Chem. C,2007,111:17473- 17477.
[13]  Liu Xin,Xu Kai,Liu Huan. Preparation and properties of waterborne polyurethanes with natural dimer fatty acids based polyester polyol as soft segment[J]. Progress in Organic Coatings,2011,72:612-620.
[14]  Yang Z H,Li Z W,Liu L,et al. NiCuZn ferrite flakes prepared using a sol-gel bubble method and its magnetic properties[J]. Journal of Alloys and Compounds,2011,509:3038 -3041.
[15]  Ramesha S,ChandraSekhara B,SubbaRaoa P S V,et al. Microstructural and magnetic behavior of mixed Ni-Zn-Co and Ni-Zn-Mn ferrites[J]. Ceramics International,2014,40:8729-8735.
[16]  Zhao J C,Guo Y M,Guo H L,et al. Solvethermal synthesis of mono- and bi-metallic flower-like infinite coordination polymer and formation mechanism[J]. Inorganic Chemistry Communications,2012,18:21-24.
[17]  吕庆荣,方庆清,刘艳美,等. 四氧化三铁亚微空心的制备及表征[J]. 功能材料与器件学报,2009,15(6):559-563.
[18]  Li Wangchang,Qiao Xiaojing,Zheng Qiuyu,et al.One-step synthesis of MFe2O4 (M=Fe,Co) hollow spheres by template-free solvothermal method[J]. Journal of Alloys and Compounds,2011,509 :6206-6211.
[19]  蒲聿,李巧玲,张存瑞,等. 纳米钴铁氧体吸波材料的研究现状[J]. 当代化工,2009,38(4):420-423.
[20]  杨贵进. 稀土掺杂纳米钴铁氧体的制备及其磁性能研究[D]. 广州:暨南大学,2009.
[21]  张晏清,邱琴,张雄. 纳米钴、镍铁氧体的制备与吸波性能[J].磁性材料及器件,2009,40(5):30-36.

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