蒙脫土添加對低密度聚乙烯的介電和空間電荷特性影響研究.pdf

1、重慶大學(xué)碩士學(xué)位論文蒙脫土添加對低密度聚乙烯的介電和空間電荷特性影響研究姓名：劉斌申請學(xué)位級別：碩士專業(yè)：電氣工程指導(dǎo)教師：廖瑞金20120524ABSTRACTPolyeⅡlylene(PE)is誦delyusedinVariouspo、VercablesaSi11sulationmaterialbecauseofitsexcellentelectricala11dmecI砌calpropertiesForlongtemoperati

2、on，i11sulationagillgcausedbyele矗c仃eehasa伊eatirnpactonlifIetiIIleofp01yetllylene，W11ichisalsom萄orcaurseforinsulationdamageaIldequipmentf甄lureIIlordertofirldas01utiontoovercome“s㈣ack，tllispaperputsforwa帕acornpoulldingme也od

3、t0improvepropeniesofPEmatI：rialsbyaddiIlgmonⅡnorilloIlite(MMT)inton：屺10wdensi夠polyemylene(LDPE)matrixIIlordertoexploret11epossiblewayof向r吐1edyimprovingPEmaterials’propenies，apreItreaclIlentofapplyillgACele確cfieldwasperfo

4、medSeveralmeasurements、Verecamedouttoevaluatebasicpropertiesofthematerial，especi甜ly，dielectricped’ornlanceandspacechargechar：lcteristicsofthemodifiedLDPEmaterialsThemainresearchresultsare1istedaSf0110ws：①Byusingmehingble

5、ndingmetllod，orgallicallymodifiedMMTwasaddedintoLDPEtoprepareMLDPEs鋤ple，andACelectricfield、vasappliedtoMLDPEtopr印areEMLDPEsalllple麗t11aself二deVisedmodelResuhsofreleVantmeasurementsrevealthat：mee11largedinterlayerdistance

6、ofMMTsuggestesasuccessmliIltercalationcompoulldingofLDPEa11dMMT；t11edispersionofMMTinLDPEisconsiderablelyevenaIld眥ifonned：謝t11tlleadditiveofMMT，tllemateriall粥abetterthenllalstabilityand11igherbreakdowns旬rength；theACelect

7、ricfieldpre仃ea由menthasaslightinlpaCton也emalstdbili鑼andbreakdowns缸engthof仕lematerials②AReraddillgMMTintoLDPEmatrix：forMLDPEmaterials麗廿ll％ofMMT，merelativepernlittivi_l=ygreatlyreducedcomparedwithu1珊odifiedLDPE，butwimincfea

8、SedcomentofMMTinMLDPE，Ⅱlerelativepermittivi夠iIlcreases；謝n1the印plicationofMMT，dielec仃iclossflaCtorofthematerialincreaSesslightly，anditincreaLses謝tllhi曲ercontentofMMTiIlMLDPE；③ARerACelectricfieldpretrea恤ent，EMLDPEm如rialgai

9、nsasmallincreasei11relatiVepemittiV時(shí)，and恤lli曲ermeappliedele嘶cfieldintens匆is，恤biggervalueofmaterial’relatiVepenllittiVi哆is；Ⅱledielec仃iclossspec咖ofmematerials麗tchedtowards11i曲骶quencydirection撒erACele嘶cfleldpre仃eanIlem，more