Zbigniew-CZECH-UV光固化在压敏胶和不干胶中的应用课件

InstitiuteofOrganicChemicalTechnologyInternationalLaboratoryofAdhesivesandSelf-adhesiveMaterialsWestPomeranianUniversityofTechnology,Szczecin,Poland2019,Wuxi,ChinaWuxiHITLimitedCorporation&ResearchInstituteofNewMaterialsHarbinInstituteofTechnologyApplicationofUV-radiationintechnologyofPSAandself-adhesivematerialsZbigniewCzech,KarolinaMozelewskaInstitiuteofOrganicChemicalTechnologyInternationalLaboratoryofAdhesivesandSelf-adhesiveMaterialsWestPomeranianUniversityofTechnology,Szczecin,PolandWhyPSAbasedonacrylics?Themostimportantrequirementsforapressure-sensitiveadhesive,suchashightackiness(adhesionbythetouch),highcohesion(innerstability),highstickiness(adhesion),UV,solventandtemperaturestabilityarefulfilledbyacrylicsinanoutstandingway

excellentagingresistancetoelevatedtemperaturesandplasticizersexceptionalopticalclaritynon-yellowinghighestbalanceofadhesionandcohesionexcellentwaterresistanceKindofPhotoreactiveAcrylicPSASolvent-BasedAcrylicPSAWater-BornePSAbasedonAcrylics(Dispersions)Solvent-FreePSAbasedonAcrylics -acrylichotmelts(130-140°C)(UV-crosslinkable) -LVS(LowViscositySystems)coatedatRM(23°C) (UV-crosslinkableandUV-polymerizable)KindofPhotoreactiveAcrylicPSALVSUV-HotmeltUV-DispersionsSolvent-BasedUV-CrosslinkingTechnologyUsedbyManufacturingofPhotoreactivePSAphotoreactivepolymersorpolymerswithC=CbondsorotherphotoreactivegroupsintosidepolymerchainsMechanismofUV-initiatedCrosslinkingofPhotoreactiveAcrylicPSA4-benzophenylvinylcarbonate

4-acryloyloxy-4’-chlorbenzophenone4-acryloyloxyaminbenzophenonep-vinyl

benzophenone2-propenoicacid2-[4-chlor-(4-benzoylphenoxy)]ethylester4-acryloyloxybenzophenone(H-abstractor)KindofUnsaturatedPhotoinitiatorsUVinitiatedcrosslinkingreactionofacrylicPSAsbasedon2-EHAandABPTack,peeladhesionandshearstrengthasafunctionofUVdose

Commerciallyavailable(BASF,HENKEL,POLY-CHEM)

Photoinitiatorincorporatedduringpolymerizationintothepolymerstructure

Application:-technicaltapes(automobileindustry)-medicaltapes(plaster)

Viscosity:>100Pa·s(atRT)

Coatingtemperature:130to140°C

Coatingusingstandardcoatingequipment:commonslot-dieorroll

systems

UV-crosslinking(UV-lampswithUV-Cspectrum:220…280nm)of

PSAlayer

UV-lampsinstalleddirectlywithinthecoatingequipment

Aftercrosslinkingtransferonthecarrier

Solvent-free,adryingchannelisnotnecessary

AfterUV-crosslinkingnophotochemicalby-productsareobservedUv-crosslinkableacrylichotmeltpsawithphotoinitiatorINCORPORATEDintoTHEpolymerchainUV-CrosslinkableAcrylicPSAHotmelts(UV-HMPSA)acResinA204UVacResinA250UVacResinA260UVacResinDS3532BASFMicryl204Micryl250Micryl260Micryl3532POLY-CHEMSelf-adhesiveproductwithUV-crosslinkedPSAlayerPhotoreactivesolvent-freePSAwithhighviscosityPhotoreactivediluentPSAwithlowviscosityPhotoinitiatorLowviscosityphotoreactivesolvent-freePSAwithlowviscosity+photoreactivecrosslinkingagentsReleaselinerPolyesterfilm

UV-lampProductiontechnologyofself-adhesiveproductsfromLV-PSAsphotoreactiveoligomersormonomers(reactivediluents)polyesteracrylatepolyurethaneacrylatePerformanceofPressure-SensitiveAdhesives(PSAs)adhesivepropertiesmechanicalpropertiestackpeeladhesion(adhesion)shearstrength(cohesion)shrinkageMainpropertiesofself-adhesivematerialsTack(initialadhesion)(AFERA4015)Adhesion(peeladhesion)(AFERA4001)Cohesion(shearstrength)(FINATFTM8)ShearAdhesionFailureTemperature(SAFT)TestingWhycohesionisthemostimportant?TackofinvestigatedsamplesaccordingtoAFERA4015(Loop-Tack)PeeladhesionmeasurementaccordingtoAFERAtestingby180°and90°cfpcfpcfpcfshshshpsh0.30ABP/120g/m²0.35ABP/120g/m²0.35ABP/120g/m²0.40ABP/120g/m²TACK,ADHESION,COHESIONfunctionof:chemicalstructureofphotoreactivepolymertypeandfunctionalityofphotoreactiveoligomerkindandamountofphotoinitiatorUV-crosslinkingtimeUVdosecoatweightofadhesive(PSA)layerUVInductedPolymerizationProcessesSOLVENT-FREEPOLYMERIZATION(uncontrolledheatbuild-up)ManufacturingofPSAlayerswithdifferentcoatweightStrengthandweaknessofUV-polymerizationandUV-crosslinking

AdvantagesDisadvantagesPSAperformancepossibledesignofhighmolecularweightdifficultadditionoftackifiers,polymerizationimpairmentbyoxygenProductionsolvent-free,possiblemanufacturingofthick-layerproductspolymerizationimpairmentbyoxygenProcessingusedofmultifunctionalmonomerascrosslinkersproblemswithsmellandvolatilityfrommonomersAdvantagesanddisadvantagesofthesyrup-PSAtechnologyPhotoreactivePSAsystemAcrylichotmeltAcrylicwarmmeltAcrylicLVSAcrylicsyrupLoopTackVerygoodVerygoodVerygoodVerygoodPeeladhesionVerygoodVerygoodVerygoodVerygoodShearstrengthatRTat70°CVeryhighHighVeryhighHighVeryhighHighVeryhighVeryhighUV-reactivityVeryhigh