玻纤论文：玻璃纤维与树脂的润湿性研究

重庆理工大学硕士学位论文玻璃纤维与树脂的润湿性研究姓名：孙静申请学位级别：硕士专业：材料指导教师：肖锋2011-05-27I(ResinTransferMoldingRTM)RTMRTMERECRECTTMIIECTECRTMERECTTMERECTECRTMSEM55°90°ABSTRACTIABSTRACTEpoxyresinshaveexcellenttechnologicalproperties,mechanicalpropertiesandphysicalproperties,lowcost,ascoatings,adhesives,resinmatrixcompositematerials,electronicpackagingmaterialsarewidelyusedinmachinery,electronics,appliances,aviation,aerospace,chemical,transportation,constructionandotherfields.Systemsasaliquid,epoxyresinhasadvantages,suchas:withthecuringprocessofshrinkageissmall,thecuredadhesive,heatresistance,chemicalresistance,excellentmechnicalandelectricalperformancecharacteristics.Polyesterresinwithgoodprocessingcharacteristics,atroomtemperature,atmosphericpressurecuring,doesnotreleaseanybyproducts,theviscosityismoreappropriate,processperformance,overallperformanceofcuredresinisgood,variety,widelyadapted,pricesarelow.Glassfiberisakeybasicmaterialinthefieldsofelectronicinformation,aviationandspaceflight,andsoon.Goodinsulation,heatresistance,highmechanicalstrength,withresintogiveitshape,canbeagoodtimber,oftenusedasreinforcementincompositematerials,electricalinsulatingmaterialsandinsulationmaterials,circuitboard,etc.Toresearchwettability,bothforthenewpreparationofcompositematerials,orhasgooddevelopmentprospectsfortheofthermoplasticresin-basedcompositematerialtechnology,andhasanimportantpracticalandhistoricalsignificancetoimprovetechnicallevelandsustainabledevelopmentabilityofourglassfiberindustryandpromotethedevelopmentofourhigh-endcivilelectronicindustryandnationaldefenseindustry.Bywihelmyplatemethod,measuresedthesurfacetensionofepoxyresinunderdifferenttemperaturecondition,analyzedtherelationshipbetweentemperatureandsurfacetension,andthetheoreticalexplanation,alongwiththetemperaturegoup,thesurfacetensionletsupgradually.Studyenunciation:Thesurfacetensionofpolyesterresinbetterthansurfacetensionofepoxyresin.ResinTransferMolding(RTM)isanewadvancedpreparationmethodforcompositematerial.RTMiswidelyusedinmanyindustries,suchasairplane,automobile,machineIIelectronicindustry,architectureandsoon.RTMasksforgoodpropertiesofresin.Resinviscosityandsurfacetensiondirectlyinfluencestheresinsoakageandthefinalpropertiesoftheproducts.Sothisthesismainlydiscussedtheinfluenceoftheresinviscosity,surfacetensiontothesoakageperformance,tosatisfytheresinsoakingsufficientlyandpermeatingthemold.Whenresinsoakglassfiberthecontactanglerisewiththeresinviscosityrising.Whenresinviscosityrisetheresinsoakageisdifficult.Thecontactanglereducewithresinsurfacetensionrisingandtherelationofthetwoislinearing.Thewettingofglassfiberandpolyesterisbetter,butintheepoxyresinisbasicallynon-wetting.Foundintheactualproduction,forthesameresin,bindingpropertiesofglassfiberandresinaredifferent,researchdifferentchemicalcompositionofglassfiber,hasanimportantsignificance.Sothisthesisdiscussedthefourfibersurfacewettabilityfromthermodynamicsandkinetics.Thermodynamics,bymeasuringthecontactangle,obtainedfourfibersurfaceenergy,polaranddispersioncomponents.Kinetics,testedthecontactangleoffiberswithtimeatroomtemperature,accordingtoempiricalandtheArrheniusequationtocalculatetheinfiltrationrateandinfiltrationoftheactivationenergy.Comprehensivethermodynamicparametersandkineticparameters,analysisthewettabilityoffourfiber.Theresultsshowthat:SurfaceenergyECTECRTMER,thatisECTtoachievegoodinfiltrationprovidesthemostfavorablethermodynamicconditions.InfiltrationoftheactivationenergyTMERECTECRthatisTMtoachievegoodinfiltrationprovidethemostfavorablekineticconditions.Thisstudyhasanimportantsignificance,tocompositemoldingprocessfortherationalchoice.BytheobservationofSEMmanyfine-sizeparticlesanddrapesdistributeonthesurfacesofglassfiberswithoutsizingtreatedandtheircross-sectionsarenotregularcircles,andwaterfilmcoveringthesurface,affectthebondbetweenglassfiberandresin.Soitisnecessarytotreatmentglassfibersurface,toenhancethewettabilitybetweenglassfiberandresin,protectthefibersurfaceisnoteroded.Coatingmaterialissaidsurfacetreatmentagent,includingthecouplingagent,lubricant,filmformerandsoon.Inrecentyears,inthefieldofresearchandcompositematerialsproduction,surfacetreatmentofglassfibermoreandmoreimportant.AthomeandabroadareconstantlyandvigorouslyABSTRACTIIIpromotetheapplication.Detectionthewettabilitybetweenglassfiberandcouplingagents,lubricants,film-formingagent,thewettabilitybetweenglassfiberistreatedbycouplingagent,lubricant,film-formingagentandresins.Studyenunciation:Thewettabilityoffiberandcoupingagentisthebest,contactangleis55°below;Thewettabilityoffiberandlubricantistheworst,contactangleismorethan90°;Thewettabilityoftheglassfiberbycouplingagenttreatmentisthebest.Keywordsglassfiberresinsurfacetensionwettability(“√”)1.□2.□11.11/20-1/550(15°C)()[1-2]2[3-5][6][7]1.21.2.1θθ1.1(a)[8]1.1(b)[8]31.11.2.21.2.2.1Young---SGσ-SLσ-LGσ--θ(1.2)SGσSLσLGσYoungSGσ=SLσ+LGσcosθcosθ(SGσ-SLσ)LGσ(1.1)SGσSLσcosθ0θ90°SGσSLσθSGσSLσcosθ0θ90°SLσSGσθθσSVσSLσLV1.2(1.1)(1.1)4--[9]()rr0SLSVSLSVLVrLVr0SL0coscoscoscosGG∆−∆−−=+∆−∆−=−=σσσσσσσσθθσθθ(1.2)θ0(SVσ-SLσ)0Grσr/