PA6+50%GF-BG-50H

TECHNICALDATASHEETGRILONBG-50HGrilonBG-50HisahighheatstabilisedPA6injectionmouldinggradewith50%glassfibres.GrilonBG-50Hhasthefollowingimportantproperties:•Highstiffness•Highheatresistance•HighheatdistortionresistanceApplicationexamplesarestressedfunctionalpartsintheenginecompartmentsuchasclutchmastercylindersandsensorhousings.2PROPERTIESMechanicalPropertiesStandardUnitStateGrilonBG-50HTensileE-Modulus1mm/minISO527MPadrycond.1750011500Tensilestrengthatbreak5mm/minISO527MPadrycond.245165Elongationatbreak5mm/minISO527%drycond.36ImpactstrengthCharpy,23°CISO179/2-1eUkJ/m²drycond.9095ImpactstrengthCharpy,-30°CISO179/2-1eUkJ/m²drycond.8590NotchedimpactstrengthCharpy,23°CISO179/2-1eAkJ/m²drycond.1525NotchedimpactstrengthCharpy,-30°CISO179/2-1eAkJ/m²drycond.1112BallindentationhardnessISO2039-1MPadrycond.270155ThermalPropertiesMeltingpointDSCISO11357°Cdry222HeatdeflectiontemperatureHDT/A1.8MPaISO75°Cdry210HeatdeflectiontemperatureHDT/C8.0MPaISO75°Cdry170Thermalexpansioncoefficientlong.23-55°CISO1135910-4/Kdry0.15Thermalexpansioncoefficienttrans.23-55°CISO1135910-4/Kdry1.00MaximumusagetemperaturelongtermISO2578°Cdry130-150MaximumusagetemperatureshorttermISO2578°Cdry200ElectricalPropertiesDielectricstrengthIEC60243-1kV/mmdrycond.3633ComparativetrackingindexCTIIEC60112-cond.475SpecificvolumeresistivityIEC60093Ω·mdrycond.10121010SpecificsurfaceresistivityIEC60093Ωcond.1012GeneralPropertiesDensityISO1183g/cm³dry1.58Flammability(UL94)0.8mmISO1210rating-HBWaterabsorption23°C/sat.ISO62%-5Moistureabsorption23°C/50%r.h.ISO62%-1.5Linearmouldshrinkagelong.ISO294%dry0.05Linearmouldshrinkagetrans.ISO294%dry0.50Product-nomenclatureacc.ISO1874:PA6,MH,14-190,GF503ProcessinginformationfortheinjectionmouldingofGrilonBG-50HThistechnicaldatasheetforGrilonBG-50Hpro-videsyouwithusefulinformationonmaterialprepa-ration,machinerequirements,toolingandprocess-ing.MATERIALPREPARATIONGrilonBG-50Hisdelivereddryandreadyforproc-essinginsealed,airtightpackaging.Predryingisnotnecessaryprovidedthepackagingisundam-aged.StorageSealed,undamagedbagscanbekeptoveralongperiodoftimeinstoragefacilitieswhicharedry,protectedfromtheinfluenceofweatherandwherethebagscanbeprotectedfromdamage.HandlingandsafetyDetailedinformationcanbeobtainedfromthe“MaterialSafetyDataSheet”(MSDS)whichcanberequestedwitheverymaterialorder.DryingGrilonBG-50Hisdriedandpackedwithamoisturecontentof≤0.10%.Shouldthepackagingbecomedamagedorbeleftopentoolong,thenthematerialmustbedried.Atoohighmoisturecontentcanbeshownbyafoamingmelt,excessivenozzledroolandsilverstreaksonthemouldedpart.Dryingcanbedoneasfollows:Temperature:max.80°CTime:4-12hoursDewpointofthedryer:-25°CTemperature:max.100°CTime:4-12hoursDryingtimeIfthereisonlylittleevidenceoffoamingofthemeltorjustslightsilverstreaksonthepart,thentheabovementionedminimaldryingtimewillbesuffi-cient.Ifmaterialisstoredopenfordays,showsstrongfoaming,unusuallyeasyflow,streaksoraroughsurfaceonthemouldedpart,thenthemaxi-mumdryingtimeisrequired.Silverstreakscanalsobecausedbyoverheatingofthematerial(over350°C)orbytoolongmeltresidencetimeinthebarrel.DryingtemperaturePolyamidesareaffectedbyoxidationattempera-turesabove80°Cinthepresenceofoxygen.Visibleyellowingofthematerialisanindicationofoxida-tion.Hencetemperaturesabove80°Cfordesiccantdryersandtemperaturesabove100°Cforvacuumovensshouldbeavoided.Inordertodetectoxida-tionitisadvisedtokeepasmallamountofgranu-late(lightcolouronly!)asacomparisonsample.Atlongerresidencetimes(over1hour)hopperheatingorahopperdryer(80°C)isuseful.UseofregrindGrilonBG-50Hisathermoplasticmaterial.Hence,incompletemouldingsaswellasspruesandrun-nerscanbereprocessed.Thefollowingpointsshouldbeobserved:•Moistureabsorption•Grinding:Dustparticlesandparticlesizedistri-bution•Contaminationthroughforeignmaterial,dust,oil,etc.•Levelofadditiontooriginalmaterial•Colourvariation•ReductionofmechanicalpropertiesWhenaddingregrind,specialcarehastobetakenbythemoulder.MACHINEREQUIREMENTSGrilonBG-50Hcanbeprocessedeconomicallyandwithoutproblemsonallmachinessuitableforpoly-amides.ScrewWearprotected,universalscrewswithshut-offnozzlesarerecommended(3zones).Length:18D-22DCompressionratio:2-2.5ShotvolumeThemeteringstroke(lessdecompressiondistance)mustbelongerthanthelengthofthenon-return-valve.Shotvolume=0.5-0.8x(max.shotvolumeofinjectionunit)ScrewSelectingtheinjectionunit!DesiccantdryerVacuumoven4HeatingAtleastthreeseparatelycontrollableheatingzones,capableofreachingcylindertemperaturesupto350°C.Separatenozzleheatingisneces-sary.Thecylinderflangetemperaturemustbecontrollable(cooling).NozzleOpennozzlesaresimple,allowaneasymeltflowandarelonglasting.Thereishowever,thedangerthatduringretractionofthescrewsfollowinginjec-tionofthemelt,airmaybedrawnintothebarrel(decompression).Forthisreason,needleshut-offnozzlesareoftenused.ClampingforceAsaruleofthumbtheclampingforcecanbeesti-matedusingthefollowingformula:TOOLINGThedesignofthemouldtoolshouldfollowthegeneralrulesforglassfibrereinforcedthermoplas-tics.Forthemouldcavitiescommonmouldtoolsteelquality(e.g.hardenedsteel)whichhasb