泰科纳POMS9364---acetalcopolymergradeS9364ishighlyimpactmodifiedgradefordemandingapplicati***.Hostaform®S9364providesasignificantimprovementinimpactstrengthandflexibilityoverstandardimpactmodifiedgradessuchasHostaform®S9063andS9064.PhysicalperformanceratingunitsystemtestmethodDensity:1.37g/cm?ISO1183MVR(190°C/2.16kg)4.00cm3/10minISO1133Shrinkage:ISO294-4Verticalflowdirection1.5%ISO294-4Flowdirection1.6%ISO294-4Waterabsorption(saturated,23°C)0.80%ISO62MechanicalpropertiesratingunitsystemtestmethodTensilemodulus1650MPaISO527-2/1A/1Tensilestress(yield)43.0MPaISO527-2/1A/50Tensilestrain(yield)16%ISO527-2/1A/50Bendingmodulus(23°C)1550MPaISO178ImpactperformanceratingunitsystemtestmethodNotchedimpactstrengthofsimplysupportedbeamsISO179/1ea-30°C11kJ/m²ISO179/1eA23°C21kJ/m²ISO179/1eAImpactstrengthofISO/179simplysupportedbeam-30°CnofractureISO179/1eu23°CnofractureISO179/1euThermalperformanceratingunittestmethodHotdeformationtemperature0.45MPa,UNannealedat140°CISO75-2/b1.8MPa,UNannealedat75.0°CISO75-2/AMeltingtemperature1166°CISO11357-3LinearcoefficientofthermalexpansionISO11359-2Flow1.2e-4cm/cm/°CISO11359-2Transverse1.1e-4cm/cm/°CISO11359-2InjectionratingunitsystemDryingtemperature:80.0to100°CDryingtime:3.0HRThetemperatureatthebackofthebarrelis170to180°CThetemperatureinthemiddleofthebarrelis180to190°CTemperatureatfrontofbarrel180to190°CNozzletemperature180to200°CProcessing(melt)temperature180to200°CMoldtemperature:60.0to70.0°CInjectionpressure:60.0to120MPaSlowinjectionspeedHoldingpressure60.0to120MPaBackpressure:0.00to0.500MPa无论对于均聚POM，还是共聚POM，当成型薄壁或者采用多型腔成型制品时，均应采用较快的注塑速度。这是因为，注塑成型此类制件时，要求体系有很好的流动性能。前面讲过，POM熔体属切敏性聚合物，要增加流动性能，可通过增加注塑速度来实现；同时，在上述应用场合，POM结晶冷却速度会很快，制品很容易产生表面缺陷如折皱、斑纹及熔接痕等，为此也需要提高注塑速度。)