高压电机用环氧绝缘浸渍漆的研究

上海交通大学硕士学位论文高压电机用环氧绝缘浸渍漆的研究姓名：董月云申请学位级别：硕士专业：材料学指导教师：江平开20070101IV.P.IA////H8A//100300.33.750.280//H8H8/II0.5H815100:8056.25°Ctanδ0.004155°Ctanδ0.021Ea=48.3kJ/moln=0.86TGA15H8TGADTGH8IIISTUDYONEPOXYINSULATIONIMPREGNATINGVARNISHFORHIGH-VOLTAGEMOTORSABSTRACTForlargemotorsorgenerators,voidsmayreduceusefullifeoftheinsulationasaresultofbreakdownunderhighelectricalstress.V.P.Iimpregnatingvarnishcanproducecontinuousinsulationsystemwithoutvoids,whichofferedcomponentswithgoodheatconductivity,thusimprovedeconomicindicatorandreliabilityofmotorperformance.Thisworkfocusedonpreparingtwonovelcompositionsofepoxyinsulationimpregnatingvarnishforhigh-voltagemotors.OnecomprisedofdiglycidyletherofbisphenolA(DGEBA)andstyreneasreactivediluent,theothercompositionbasedonalicyclicepoxyandwithglycidoletherH8asdiluent.Thus,avarietyofeffectsonpropertiesofthetwocompositionswereinvestigated,especiallytherelationshipsbetweenchemicalstructureandpropertiesofcuredproducts.AsforDGEBA/anhydride/styrenecomposition,FTIRwasutilizedtotracethereactionsandthereactionmechanismswerediscussed.Theprescriptionwasoptimizedinaccordancewithanalyzingdielectricperformancebehaviors,itwascomprisedof100partsDGEBA,30partsstyrene,MA,acceleratorBDMAandAlAcAcrespectivelywere3.75,0.3and0.2parts,MHHPAwas80parts.Thealicyclicepoxy/anhydride/H8compositionwasstudiedtheeffectIVofcontentsofacceleratorAlAcAc,diluentH8,anddifferentequivalentproportionofepoxy/anhydrideonthecuringprocess,thenetworkandthepropertyoftheproducts.Basedonthepropertyanalyzesyieldedtheoptimumprescription:theequivalentproportionofepoxy/anhydridewas1:0.8,AlAcAcwas0.5parts,H8was15parts.Thisprescriptionwasoflowviscosityatroomtemperatureforeasyflow,whichwas56cps.ThekineticsofthecuringprocessesofoptimumprescriptionwasanalyzedbyKissingerandCraneequations,anddiscussedthecuringkineticparametersofthecuringsystems:theactivationenergyEa=48.3kJ/mol,thereactionordervaluen=0.86.Becausethebehaviorofthermosetswasaffectedbytheadditionofdiluents,itisimportanttoinvestigatethechangestakingplaceduringthethermaldegradationofthematerial.Westudiedthethermalpropertyofepoxycompositionswithoutdiluentsandwith15partsH8throughTGA.ThetwoTGAcurvesweresimilar,whichindicatedtherewasnoobviousdifferenceonthermalstability.ThekineticparameterswasextractedfromTGAthermaldegradationexperiments,analyzedbyKissingermethodandFlynn-Wall-Ozawamethod,Boththeresultsshowedthattheactivationenergyofcompositionwith15partsH8waslagerthanthecompositionwithoutdiluent,whichmeantthecompositionwith15partsH8wasmorestableinthefastestdegradationstage,thusH8wasasuitablechoiceforimpregntingvanishcomposition.KEYWORDS:ImpregnatingVarnish,Epoxy,Diluent,KineticsVV.P.I:VacuumPressureImpregnateDSC:DifferentialScanningCalorimetryTGA:ThermalGravimetricAnalysisDTG:DerivativeThermalGravimetryMA:MaleicAnhydrideMeHHPA:Methyl-hexahydrophthalicAnhydrideBDMA:BenzylDimethylamineAlAcAc:AluminumacetylacetonateDCP:DicumylPeroxideFTIR:FourierTransformInfraredSpectroscopyH8:Heloxy82007110□□√“√”200711020071101.2001200013466kWh200114682kWh200216386kWh,10.9%8.4%11.6%20003.19kW,20013.38kW20023.56kW,6.8%6%5.3%,2003200320033700200274.8%,2004600020056500[1][2]1.1191019192V.P.IThermalasticMicapalBBCMicadurAlsthomlsotenexEECNovobondHipactDialasticF[2,3]1.2V.P.IV.P.I,;,,V.P.IHC1.2.1V.P.IV.P.IV.P.IV.P.I3/41/431.2.2V.P.IVPI→→→→→→→[4]1-1V.P.IFigure1-1TheequipmentofV.P.I1.2.3[5-7],35%4%-8%(VPI)VPICOGEBIISOLAISOVOLTAISOLA366.58A4ISOVOLTAME2072A/tanδVPI28%VPI801.2.4[8-13]1.2.4.1(1)(2)(3)(4)5(5)51.2.4.2,180(Si-O)-60-260°C()2H60Sory1SDR-17025Dow3Pyre-ML[14]46[15][16-17]56GE702CISONEL51[18]7BTPT—IO[19]1.2.4.3(1)FH(2)(3)(4)71.2.4.4V.P.I[20-26]53841PUWTABBEP1907090ABBEP1901965ET88460Micalastic60—70CY-179CY-175Ciba195470VPI[27-29]81.31.3.1(EpoxyResin)(1igomer)n(Epoxide)1940[30-33]H2CHCOCH2OCCH3CH3OCH2CHOHCCH3OOCH2CH2HCCH2OCH3n1.3.2[34](1)(2)(3)(4)(5)(6)9EA90%AAn22nn[32-34]1.3.3(1)(2)(3)1%-2%6×10-5/°C(4)(5)(6)(7)80-100°C200°C(8)[34]101.3.4(25°C)()71%23%11100DMP-30(2)100°C-1.3.5/12123410-25%200%800%[30-32,34]1.413:1DSC/2/3(/)4DSCTGADTG14.A//VPI--[35]VPI123456[36]2.12.1.12.1.1.12.1.1.2DZF-6050CH1515FTIRParagon1000PerkinElmerIncUSANDJ-79QS30ZC-36AHDZPEKIN-ELMERDSC-7Perkin-Elmer152-1Table2-1detaillistofreagent2.1.1.3KBrKBrGB1045-70QS-301000VHG2-59-1978GB/T1408.1-1999GB/T15023-94150°CDSC5mg10°C/min20ml/minDER-331MAMeHHPABDMAAlAcAcSigma-AldrichCo.Ltd(UK)DCP1630-300°C2.1.22.1.2.1DER33190°CMABDMA660°C202.1.2.2MeHHPADCP60°C135°C150°C142.1.4DER331100DER331190/MeHHPA168/2.1.4.1MABDMA0.44300.03DER331:MeHHPA100:70DCP0.0040.4MA2.53.03.544.52.1.4.2BDMAMA3.54300.03DER331:MeHHPA100:70DCP0.0040.4BDMA0.10.20.30.4172.1.4.3/MeHHPABDMA0.4MA3.54300.03DCP0.0040.4DER331:MeHHPA1007010080100901001002.1.4.4AlAcAcBDMA0.4MA3.54300.03DER331:MeHHPA100:70DCP0.0040.10.20.30.42.22.2.1BDMAMABDMA[37]12318COCOO+CH2N(CH3)2CCOOON(CH3)2H2CCHOCH2CCOOON(CH2)2CH2CHOCH2+COCOOCCOOON(CH2)2CH2CHOCH2CCOOOCCOOON(CH3)2+CCOOON(CH2)2CH2CHOCH22.2.2/[38]+219H3CCOH2CCOCH3Al3+3Al3++3H3CCOH2CCOCH3H3CCCOOO+Al3+H3CCCOOOn=3~6Al3+H3CCCOOOnAl3+n-1H3CCCOOO+H3CCCOOO++Al2+2.