高等学校化学学报
高等學校化學學報
고등학교화학학보
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES
2014年
2期
402-408
,共7页
蒋军军%杨春明%王洪波%刘小华%李龙浩
蔣軍軍%楊春明%王洪波%劉小華%李龍浩
장군군%양춘명%왕홍파%류소화%리룡호
配位-氧化聚合-水热法%聚苯胺/CoFe2O4纳米复合物%微波吸收%反射损耗
配位-氧化聚閤-水熱法%聚苯胺/CoFe2O4納米複閤物%微波吸收%反射損耗
배위-양화취합-수열법%취분알/CoFe2O4납미복합물%미파흡수%반사손모
Coordination-oxidative polymerization-hydrothermal method%Polyaniline/CoFe2O4 nanocompo-site%Microwave absorption%Reflection loss
采用“配位-氧化聚合-水热法冶制备了本征态聚苯胺/CoFe2 O4二元纳米复合物,再以磺基水杨酸掺杂获得聚苯胺/CoFe2 O4电磁复合物.考察了反应物配比及掺杂酸浓度对产物电磁性能的影响.通过透射电子显微镜( TEM)、X射线衍射( XRD)、红外光谱( FTIR)及电磁测量等手段对聚苯胺/CoFe2 O4的形貌、结构及性能进行了表征.结果表明,复合物呈现多级结构,其中CoFe2 O4为立方体状,平均粒径小于20 nm.当CoFe2 O4的质量分数为8.86%时,复合物的电导率约为0.43 S/cm;当聚苯胺/CoFe2 O4复合物厚度为2 mm时,在16.01 GHz处最大反射损耗为-16.71 dB,小于-10 dB的带宽达4.68 GHz;而当聚苯胺/CoFe2 O4复合物厚度为3.2 mm时,在9.23 GHz处最大反射损耗达-51.81 dB,小于-10 dB的带宽为3.69 GHz,表明具有良好的吸波性能.
採用“配位-氧化聚閤-水熱法冶製備瞭本徵態聚苯胺/CoFe2 O4二元納米複閤物,再以磺基水楊痠摻雜穫得聚苯胺/CoFe2 O4電磁複閤物.攷察瞭反應物配比及摻雜痠濃度對產物電磁性能的影響.通過透射電子顯微鏡( TEM)、X射線衍射( XRD)、紅外光譜( FTIR)及電磁測量等手段對聚苯胺/CoFe2 O4的形貌、結構及性能進行瞭錶徵.結果錶明,複閤物呈現多級結構,其中CoFe2 O4為立方體狀,平均粒徑小于20 nm.噹CoFe2 O4的質量分數為8.86%時,複閤物的電導率約為0.43 S/cm;噹聚苯胺/CoFe2 O4複閤物厚度為2 mm時,在16.01 GHz處最大反射損耗為-16.71 dB,小于-10 dB的帶寬達4.68 GHz;而噹聚苯胺/CoFe2 O4複閤物厚度為3.2 mm時,在9.23 GHz處最大反射損耗達-51.81 dB,小于-10 dB的帶寬為3.69 GHz,錶明具有良好的吸波性能.
채용“배위-양화취합-수열법야제비료본정태취분알/CoFe2 O4이원납미복합물,재이광기수양산참잡획득취분알/CoFe2 O4전자복합물.고찰료반응물배비급참잡산농도대산물전자성능적영향.통과투사전자현미경( TEM)、X사선연사( XRD)、홍외광보( FTIR)급전자측량등수단대취분알/CoFe2 O4적형모、결구급성능진행료표정.결과표명,복합물정현다급결구,기중CoFe2 O4위립방체상,평균립경소우20 nm.당CoFe2 O4적질량분수위8.86%시,복합물적전도솔약위0.43 S/cm;당취분알/CoFe2 O4복합물후도위2 mm시,재16.01 GHz처최대반사손모위-16.71 dB,소우-10 dB적대관체4.68 GHz;이당취분알/CoFe2 O4복합물후도위3.2 mm시,재9.23 GHz처최대반사손모체-51.81 dB,소우-10 dB적대관위3.69 GHz,표명구유량호적흡파성능.
Polyaniline/CoFe2 O4 binary nano-composites were prepared by coordination-oxidative polymeriza-tion-hydrothermal method, and doped by sulfosalicylic acid. The influence of reactants ratio and concentration of doping acid on electromagnetic properties of resulting composites was investigated. The micrographs, struc-ture and electromagnetic properties of polyaniline/CoFe2 O4 composites were characterized by TEM, XRD, FTIR and electromagnetic measurements. The results indicate that the prepared composite show a multi-level structure in which CoFe2 O4 is cube-shaped with an average particle size less than 20 nm. The optimal experi-mental results were as follows: the conductivity of the composite is about 0.43 S/cm when the content of CoFe2 O4 in composite is 8.86%( mass fraction) . When the thickness of PAn/CoFe2O4 composite is at 2 mm, a maximum reflection loss of -16.71 dB at 16.01 GHz is observed with a bandwidth of 4.68 GHz above -10 dB loss; and when the thickness of PAn/CoFe2O4 composite is at 3.2 mm, a maximum reflection loss of-51.81 dB at 9.23 GHz is observed with a bandwidth of 3.69 GHz above -10 dB loss. The nanocomposite exhibits excellent microwave absorbing capacity.