pan2fmwcnts微纳米纤维膜的制备及其层合板复合材料的吸波性能的研究

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1、东华大学硕士学位论文摘要纳米纤维膜层合板的屏蔽效能随着MWCNTs质量分数的增加而增加；MWCNTs质量分数超过25wt%后，由于材料的极化作用减弱而导致材料对电磁波的能量衰减作用减小。随着MWCNTs质量分数的增加，每一个层合板的吸波曲线上的波峰对应的频率向低频转移。将含有多层PAN/MWCNTs微纳米纤维膜的层合板和单层层合板的屏蔽效能进行对比，结果发现：当MWCNTs质量分数为25wt%时，含有10层PAN/MWCNTs微纳米纤维膜的层合板的吸波性能有所增加。对不同块数的层合板叠加后的屏蔽效能进行测试，测试结果表明，叠加之后的屏蔽效能约等于每块层合板屏蔽效能之和；并且随着层

2、合板块数的增加，屏蔽效能越大；吸收峰值对应的频率向高频转移。同时与一块层合板材料的屏蔽宽度相比，而随着层合板块数的增加，材料的屏蔽宽度也大大增加。关键词：聚丙烯腈，多壁碳纳米管，静电纺丝，层合板复合材料，屏蔽效能万方数据PREPARATIONOFPAN/MWCNTSMICRO-NANOFIBERMEMBRANEANDTHESTUDYOFMICROWAVEABSORPTIONOFITSLAMINATEDPLATEABSTRACTInmodernsociety,peoplehavesufferedfromwaterpollution,airpollution,noisepolluti

3、onandelectromagneticpollutionindailylife.Electromagneticpollutionisknownasthefourthlargestpollutionandexcessivemicrowaveradiationhasaseriousimpactonpeople'shealth.Absorbingmaterialswithcarbonnanotubeshaveawidebandwidth,lightweightandgoodmaterialcompatibility,sotheyexhibitpotentialapplicationi

4、nabsorbingfield.Electrospinningisthesimplestmethodtomanufacturenanofibresandthistechniciswidelyusedinthefiltermaterial,biomedicalmaterial,tissueengineeringandcompositematerials.Inthisstudy,anewtypeofcompositelaminateswaspreparedbyaddingMulti-walledcarbonnanotubes(MWCNTs)intoPolyacrylonitrile(

5、PAN)solutionforelectrospinninganditsapplicationinabsorbingareaswasexplored.Thisresearchhadacertainreferenceandguidanceforthestudyandapplicationofnano-absorbingmaterialsandstructuralabsorbingmaterial.Firstly,inordertoexploretheoptimalelectrospinningparametersofPANsolutionandobtainmicro/nano-fi

6、bermembranewithstablestructureandperformance,Orthogonalexperimentwasexploredtostudytheeffectofthreeimportantspinningparameters(PANsoluteconcentration,appliedvoltage,andreceivingdistance)onelectrospinningofPANsolution.ThestudyobservedSEM,diameterdistributionofPANnanofibersassociatedwithorthogo

7、naltestwasanalyzed,ItwasdemonstratedthattheconcentrationofPANsolutionwasthemostimportantprocessparameterswhichinfluencedthediameterofthenanofibers.Thentheoptimumprocesswasobtained.Secondly,accordingtotheoptimumelectrospinningprocessparameters