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1、第二章粘接原理与粘接技术(Thesecondchapterbondingprincipleandbondingtechnology)The1988contributionofbarefootveterinarianispresentedinthispaperPptdocumentsmayexperiencepoorbrowsingontheWAPside.ItisrecommendedthatyouselectTXTfirstordownloadthesourcefiletothelocalmachine.ElectivecourseMultimediacoursewa
2、restickmeetSpeaker:Speaker:ZhaoXin,SuzhouUniversityofScienceandTechnologyagent20112011-3-29OneThesecondchapterbondingprincipleandbondingtechnologyThemaincontentofthischapterisSection2.1surfacecharacteristicsofadherendandsurfacebondingstrengthandcuringrequirementsSection2.5Section2.2influ
3、enceofwettingandbondingtheorymethod,Section2.32.4adhesivesurfaceadhesivematerial,theadhesivejointdesignof2.6factors20112011-3-292Section2.1isthesurfacecharacteristicsofadhesivematerialandsurfacetreatmentrequiresasolidsurfacemorphology.1.Theroughnessofthesolidsurface2,theporousnatureofthe
4、solidsurface3,theadsorptionandcomplexityofthesolidsurface4,thedefectsofthesolidsurface20112011-3-29ThreeSection2.1isthesurfacecharacteristicsofadhesivematerialandsurfacetreatmentrequirementoftwo.ByprocessingtheadherendsurfacerequirementsPurificationoftheadherendsurface-mechanicalmethod1,
5、purifyingtreatmentmachineryadhesivephysicalmechanicalsurfacemethod:washing:changetheadherendsurfacephysicalandchemicalproperties,chemicalmethod,2changesareactivatedsurfacephysicalandchemicalpropertiesoftheadherendsurfacechemicalmethod:metalsurfaceactivationofpolymermaterials:20112011-3-2
6、9FourSection2.2wettingandbondingtheoryUniformspreadingofwettingliquidundertheactionofintermolecularforceonsolidsurface.Indicatingtheaffinityofliquidtosolid.Surfacetensionofmatter:Generally,thesurfacetensionofmetals,oxidesandinorganiccompoundsisabout0.2-5N/m-1.,polymersolid,organicmatter,
7、adhesive,waterandsoon.Thesurfacetensionissmallandhalfislessthan0.1N.M-1.20112011-3-295Section2.2wettingandbondingtheoryTwo,sticktorelayBonding:referstothebondingforcebetweentheadhesiveandthesurfaceoftheadhesive.Itincludesmechanicalforce,intermolecularforce,andchemicalbond