多孔吸音陶瓷的制备-汪永清

　293　　　　　　　　　硅　酸　盐　通　报　　　　　　　Vol.29　No.3　20106　　　　　　　BULLETINOFTHECHINESECERAMICSOCIETY　　　　　　　June,2010　　汪永清,施　群,汪锦明,徐天放,郑　文(,　333001):20wt%,10wt%70wt%,,。,SEM。:76%,20%,4%,。:;;:TQ174　　:A　　:1001-1625(2010)03-0608-04PreparationofPorousAcousticAbsorptionCeramicWANGYong-qing,SHIQun,WANGJin-ming,XUTian-fang,ZHENGWen(SchoolofMaterialScienceandEngineeing,JingdezhenCeramicInstitute,Jingdezhen333001,China)　　　　　　Abstract:Theacousticadsorptionceramicwaspreparedbythe20wt%plasticclaysoil,10wt%ballclayand70wt%hypothermiasandasbaseceramic,andcharcoalchiporsawdustasporeformer.Theas-preparedsampleswerecharacterizedbySEM.Theeffectofthekindsandthecontentsofporeformersontheopenporosityandthesoundabsorptionofthesampleswerediscussed.Theresultsshowedthattheoptimumsoundabsorptionwasobtainedundertheconditionof76wt%baseceramic,20wt%charcoalchipsor4wt%sawdust.Keywords:porousceramics;acousticabsorption;poreformer:(1966-),,,.E-mail:[e-mail].1　引　言,、、[1-3],、,,,,,;,,[4-6]。,,[7-10]。,、、,、、[11]。,,[12]。、,,。。2　实　验2.1　20wt%,10wt%70wt%,,DOI:10.16552/j.cnki.issn1001-1625.2010.03.010　3:609　　、、,,1。1　Fig.1　Flowdiagramforsamplepreparation2.2　JSM-6700;QBT1642-1992GB3001-82,;,AWA6122(2),100mm(125～2000Hz,4000Hz,50mm),1m,,,(),,S,a=4S/(S+1)2。。2　;1.()2.(L、S)3.4.5.Fig.2　Schematicdiagramofstanding-wavetubetestsystem3　结果分析与讨论3.1　,,3。3,,,3,。、,、,CO2,,。,:,,,,,。;,,。,,,。,。610　　　　　　　　293　Fig.3　Effectofporosityonsound-absorbingcoefficient4　(a)(b)Fig.4　Effectofthekindsofpore-formersonthemicrostructureofsamples　　(20%)SEM,4。4,,,20wt%4a(39.2%,30.2MPa),,,,;20wt%4b,(31.6%,37.2MPa),,,,。3.2　10%～25%,3∶17∶1,,。1。1　Tab.1　Effectsofmixedpore-formeronporosityandsoundabsorptioncoefficientExperimentCharcoal/sawtimber/wt%Apparentporosity/%Sound-absorptioncoefficient/%Flexuralstrength/MPa920/447.932.127.91020/643.530.726.91120/840.428.826.71230/655.829.316.51330/851.428.812.21440/654.027.411.31540/855.428.310.8　　1,9#、10#、11#20wt%,4wt%、6wt%8wt%,4wt%,。30wt%40wt%,6wt%8wt%,5∶1,,。,:76wt%,20wt%,4wt%。3.3　,,,。5。5,,,。,,,,。　3:611　　5　Fig.5　Effectofthethicknessofsamplesonthesound-absorbingcharacters6　Fig.6　Effectofthethicknessofsamplesonthesound-absorptioncharacters3.4　,,:76wt%,20wt%,4wt%,,,,6。6,。,,,,,。,。4　结　论(1),,;(2):76wt%,20wt%,4wt%,;(3),,,,。[1],,　.[J].,2006,27(1):6-10.[2],.[J].,2004(6):22-24.[3]　,,.[J].,2008,34(27):192-193.[4].[J].,2002,(1):56-61.[5],,　.[J].,2003,(5):60-62.[6],,-[J].,2000,(3):45-51.[7]GuiC,GouCRF.Controlofaircraftinteriorbroadbandnoisewithfoam-PVDFsmartskin[J].JournalofSoundandVibration,1999,220(3):541-557.[8]MontanaroL,JorandY,FantozziG.Ceramicfoamsbypowderprocessing[J].JournaloftheEuropeanCeramicSociety,1998,18(9):1339-1350.[9]ChoudharyVR,UphadeBS,MammanAS.Oxidativeconversionofmethanetosyngasovernickelsupportedoncommerciallowsurfaceareaporouscatalystcarriersprecoatedwithalkalineandrareearthoxides[J].JournalofCatalysis,1997,172(2):281-293.[10]XinWZ.Improvementinthestrutthicknessofreticulatedceramics[J].JournaloftheAmericanCeramicSociety,2004,84(7):1654-1656.[11].[J].,2008,24(1):120-120.[12]HirschfeldDA,LiTK,LiuDM.Processingofporousoxideceramics[J].KeyEngeeringMaterials,1996,115:65-80.