PZT-PVDF壓電復合材料的制備及其性能研究.pdf

1、武漢理工大學碩士學位論文PZTPVDF壓電復合材料的制備及其性能研究姓名：游達申請學位級別：碩士專業(yè)：材料學指導教師：張聯(lián)盟董玉林2003.5.1AbstractPVDF／PZTpiezocompositeconsistingofpiezoelectricceramicandpolymerwasmadeaccordingtheconnectionmode，volumefractionratioorgeometricdistributio

2、nmodeThiskindpiezocompositenotonlypossessespropertiesofthepiezoelectricceramicandthepolymerbutalsoovercomesthedisadvantageofeachsinglematerialItcontainsmanyfinepropertiessuchasthehighpiezoelectricitylowbrittleness，densit

3、yanddielectricconstantAnditalsocanbeeaSymadeintovariousshapeproductsandthinsliceButthedispersedegreeofPZTceramicparticleinthePVDFisallexigentproblemtobesolvedThedispersedegreeoftheceramiccangreatlyaffectuniformityoftheco

4、mposite，whichlimitthepolingvoltageandaffectthepiezoelectricityInthispapertherelationshipsamongconstitutes，microstmcmres，dielectricandpiezoelectricpropertieswerecMcllImedbyemployingtheBannoUnitCellmode；PZTceramicweresynth

5、esizedbythehydrothermalmethodandtheappropriatesolutionWasselectedaccordingtheadsorptionofPVDFontheceramicparticlesurface；ThenrelationshipsbetweenthedispersedegreeandthefabricationprocesswerestudiedBaseonthese，thePZT／PVDF

6、compositesintermingledsomePAnwerepreparedandthemicrostructureswereinvestigatedAtlast，theBannoUnitCellmodewasprovedandimprovedbytheexperimentaldatainorderthatthedesignofpiezocompositeWasmorescientificandaccurateTheresearc

7、hresultsshowthatthePZTceramicparticlewithhigllpuritynarrowgranularitydisperse，SOthiskindPZTceramicpanicleissuitabletopreparethepiezoeomposite。ThentheethanolwasselectedtomixthePZTandPVDFThemixedsolutionWaSultrasonicallydi

8、spersedtoimprovethedispersiondegreeAfterthat，thesampleWaSpressedintoshapeandannealedAnditalsofoundthattherelativedensitiesofthesamplesannealedunder100Mpawere10percentabovethoseofthesamplesannealedwithoutpressureBasedonth