电磁屏蔽材料的屏蔽原理及研究现状

:,,1973,,(,200051),,,,,,MechanismanddevelopmentofelectromagneticshieldingmaterialsWangJincheng(StateKeyLaboratoryforModificationofChemicalFibersandPolymerMaterials,DonghuaUniversity,Shanghai200051)AbstractTheharmsofelectromagneticradiationtoelectricequipment,fuel,animalsandhumanwereintoduced,andthemechanismofelectromagneticshieldingmaterialsanditsdevelopmentwassummarized.Keywordselectromagneticradiation,shielding,harm,mechanism,development,,,,1,,3:;;[1]:SE=R+A+B(1):SE,dB;R;A;B(A15dB),,R,A,;A,R,A,R,B[1]:A(dB)=11314d(fff)1/2(2)A(),,,R,():R(dB)=168-10lg(fr/Or)(3)::R(dB)=20lg{[11173(r/rf)1/2/D]+010535D(ff/f)1/2+01354}(4):R(dB)=362-20lg[(fr/r)1/2D](5)307Vol130No1720027NEWCHEMICALMATERIALSJuly2002,A,B,B,,B:B(dB)=20lg|1-e/413362|(6):B,[2],d(cm);f(Hz);f;f;D,cm(),,,,;,,2,3060dB,,1,()(),,,21121111,,60,(65dB),,[3],,1,,,,,,,,,,,,,,,,,ABS,,,,,,,5070m,10-3cm,3060dB(5007:171000MHz)[4](30MHz),,/,,[5],,2,,(AgAlSn),;,,,10-2cm,,30m60m,,,,,1cm,10-3cm,,,,,,,21112[6],,,,70m,10-2cm,70dBNiCu/NiABS,50m,,60dB,,2,,6070dB212,ABS,,[7]21211,,,,66080dB[8],,7mPCPSEVA,6%,40dB,,[9],,,,21212,,(12)1830()Er3+,,,C-HEr3+O-HC-HVianaB[19]Nd3+Dy3+,,CordoncilloE[20],EuCl3,Eu2+-,,H-SiEu3+Eu2+,,,,3,(),-,,1ChujoY,SaegusaT1AdvPolymSci,1992,100:112JudeinsteinP,SanchezC1JMaterChem,1996,6:5113BenedicteLebeau,ClementSanchz1CurrentOpinioninSolidState&MaterialsScience,1999,4:114KailihanaM1JSol-gelScienceTechnol,1996,6:75KomarneniS1JSol-gelSciTechnol,1996,6:1276RCorriu1Polyhedron,1998,17:9257YoshikiChujo1CurrentOpinioninSolidState&MaterialsScience,1996,1:8068ChristianGuizard,AlainBac,MihailBarboiu,etal1SeparationandPurficationTechnology,2001,25:1679EricBescher,JohnDMackenzie1MaterialsScienceandEngineering,1998,C6:14510LevyD,AvnirD1JPhysChem1998,92:473411LevyD,EinhormS,AvnirD1JNon-crystSolids,1989,113:13712LevyD1ChemMater,1997,9:266613BiteauJ,ChaputF,BoilotJP1JPhysChem,1996,100:902414SchaudelB,GuermeurC,SanchezC,etal1JMaterChem,1997,7:6115BiteauJ,ChaputF,LahlilK,etal1ChemMater,1998,194516MacCraithBD,McDonaghC,OkeefeG,etal1JSol-gelSciTech2nol,1994,2:66117NarangU,GvishiR,BrightFV,etal1JSol-gelSciTechnol,1996,2:11318A1C1Franville,D1zambon,R1Mahiou,etal1JAlloysandCom2pounds,1998,275-277:83119VianaB,KozlovaN,AschhhougP,etal1JMaterChem,1995,5:71920CordoncilloE,VianaB,EscribanoP,etal1JMaterChem,1998,8:507:2002-01-04(18),,CabotSuper-Conduc2tiveConductex40-220/PP,1118g/cm3,40dB,[10]3,1BE.,,..:,19852SiWeimin,LuoShoufu.SurfaceTechnology,1993,22(3):1043EvansK.MaterialsandDesign,1984,43(2):434KortschotMT,WoodhamsRT.PolymerComposites,2000,(4):2965SongTian.FunctionMaterials,1994,25(6):4926BiggDM.PolymerEngineeringandScience,1999,19(16):11887CurryJ,FarrelJ.PlasticsEngineering,1996,32(5):398Yamaaki.(),1998,32(10):2419HolbrookAL.TheInternationalJournalofPowerMetallury,2001,22(1):4010SommersDJ.PlasticsTechnology,2000,31(11):77:2002-04-081230