- Multifunctional EMI Shielding Aramid Nanofibers Films with Record-Breaking Electrical Conductivity Enabled by Solid-Liquid Bicontinuous Conductive Network
- 来源：王雷教授个人网站
2026-03-30
- Developingelectromagneticinterference(EMI)shieldingmaterialsthatcombinehighshieldingefficiencywithelectricalinsulationforelectronicpackagingremainsacriticalchallenge.Inthiswork,multifunctionalmultilayercompositefilmscomprisingsilvernanowires(AgNWs),liquidmetal(LM),andaramidnanofibers(ANF)withaslipperysurface(ALAFS)arefabricatedviaanintegratedstrategyoflayeredvacuumfiltration,hotpressing,andscrapercoating.WithanoptimizedAgNWs:LMratioof2:1andaloadingof60wt.%,theAgNWs@LM/ANFfilmspresentarecord-breakingelectricalconductivityofupto2.1×104S/cm.Aftercoatingtheinsulatinglayer,theALAFSdemonstratesanultrahighEMIshieldingeffectiveness(SE)of92dBandmaintainsexcellentelectricalinsulationwithavolumeresistivityof1.13×1015Ω?cm,effectivelymitigatingshort-circuitrisks.TheEMISEremainssuperior(>90dB)evenunderextremeenvironmentalconditions.Furthermore,theALAFSexhibitsahighin-planethermalconductivity(λ)of15.9W/(m?K)foreffectiveheatdissipationandrobustmechanicalpropertieswithatensilestrengthof176MPa.Synergizingsurfacehydrophobicitywiththeinternalconductivenetwork,ALAFSalsooffersefficientanti-frostandde-icingcapabilities.Insummary,ALAFSprovidesacomprehensivesolutionforthepackagingandthermalmanagementofnext-generationflexibleelectronicsincomplexenvironments.
- [来源：中国聚合物网]