聚酰亚胺和碳纳米管复合材料的应用课件

TheApplicationofPolyimide/CarbonNanotubeCompositesinElectricalConductivityHeadstormThepropertyofPolyimideandCNTandtheirinitialapplicationThespecificapplicationofPI/CNTcompositesSomeotheruseofPI/CNTcompositesAbstract:ThepropertyofPolyimideandCNTandtheirinitialapplicationTheAdvantageofPolymericNanocompositesTheApplicationofPI/CNTcompositesinAerospaceFutureaerospacevehicleswillrequireasignifi-cantreductionofmass,sizeofcomponents,andpowerrequirements,accompaniedbyanincreaseintheintelligenceofthesecomponents.

Single

wallcarbonnanotubes(SWNTs)areattractive

fortheseapplicationsbecauseoftheirextraordinarycombinationofthermal,electrical,dielectric,andmechanicalproperties.

ThespecificapplicationofPI/CNTcompositesResistive-typehuminitysensorcapacitivetypehumiditysensor:useslesspowerandhasmuchbetterlinearity.Resistivetypehumiditysensor:muchsimplerandmorestraightforwardthancapacitancemeasurementsKum-PyoYoo,Lee-TaekLim,ect.Novelresistive-typehumiditysensorbasedonmultiwallcarbonnanotube/polyimidecompositefilms.SensorsandActuatorsB:Chemical2010,145:120-125.Kum-Pyo

Yoo,Lee-TaekLimdevelopedanovelresistive-typeRHsensorbasedonplasma-treatedmultiwallcarbonnanotube/polyimide(pMWCNT/PI)compositefilms,successfullyovercomethesedrawbacks.Theadvantageofpolyimide-basedpolymersinhumiditysensingHighsensitivityBi-directionalwatertransportResistancetomostchemicalattacksHightemperaturecapabilityCompatiblewiththeCMOSprocessThecomparisonbetweencapacitiveandresistive-typehuminitysensorhighcut-offhumidity(detectionlimit)ataround30–42%relativehumidity(RH).PressuresensorTheadvantageofpolyimidebasedpressuresensor:lightMechanicallydurableThermalstabilityflexibleRelativelyeasytomanufactureComparedwithpiezoelectric,magnetoresistive,optical,andacousticstressandstrainsensors,piezoresistivesensorshaveattractedparticularattentionbecausetheyarenotinfluencedbyunexpectedexternalstimulisuchasstaticchargesandmagneticfields.Sopiezoresistivesensorsareparticularlysuitableforaerospaceapplication.PiezoresistiveCharacteristicsofSingleWallCarbonNanotube/PolyimideNanocomposites.JournalofPolymerScience:PartB:PolymerPhysics,Vol.47,994–1003(2009)PiezoresistivecharacteristicsofMWNTnanocompositesandfabricationasapolymerpressuresensor.Nanotechnology20(2009)185503(11pp)flexiblecoppercladlaminated(FCCL)filmshighflexibilityhighglasstransitiontemperaturelowthermalexpansioncoefficientexcellentthermalstabilityradiationresistance.TheadvantageofpolyimideusedinFCCL:superiorthethermal,electricalandmechanicalpropertiesLowthermalexpansioncoefficientHigherdielectricconstantPI/CNTcompositesusedinFCCL:CouldPI/CNTcompositesbeusedaselectrode?AgCNTfilmsCommonmetalComparisonofCNTandcommonmetal6.06·10_9>=10_7280S·cmPI/CNT0.1%wt1.6·10_-8SomeotheruseofPI/CNTcompositesSomeotheruseofPI/CNTcompositesGasseparation(carbonmolecularsievemembranes)tribologicalsuperhydrophobicityHighthermalstabilityHighpermeabilityandselectiveExcellentgasseparationHighchemicalandwearresistanceStableinvariousharshatmosphereThermalstabilityGoodmechanicalstrengthAcomparisonofcarbon/nanotubemolecularsievemembraneswithpolymerblendcarbonmolecularsievemembranesforthegaspermeationapplication.MicroporousandMesoporousMaterials113(2008)499–510Biomimeticpolyimidenanotubearrayswithslipperyorstickysuperhydrophobicity.JournalofColloidandInterfaceScience344(2010)541–546CarbonNanotubeReinforcedPolyimideThin-filmforHighWearDurability.Tr