泰科纳POM***0SW---***0SWisalowweargradedesignedforgearsandotherlowwearapplicati***,especiallywherereducingnoiseandwearagainstthesamematingsurfaceisimportant.Thisgrademaybepreferredinhighload-lowvelocityapplicati***.Celcon®***0SWisanoptionwheresiliconeorPTFEbasedwearresistantproductsarenotacceptable.PleasealsoseeHostaform®C9021SW.PhysicalperformanceratingunitsystemtestmethodDensity:1.41g/cm?ISO1183MVR(190°C/2.16kg)8.00cm3/10minISO1133Shrinkage:ISO294-4Verticalflowdirection1.6%ISO294-4Flowdirection:2.0%ISO294-4MechanicalpropertiesratingunitsystemtestmethodTensilemodulus2600MPaISO527-2/1A/1Tensilestress(yield)49.0MPaISO527-2/1A/50Tensilestrain(yield)8.0%ISO527-2/1A/50Bendingmodulus(23°C)2560MPaISO178ImpactperformanceratingunitsystemtestmethodNotchedimpactstrengthofsimplysupportedbeam(23°C)5.0kJ/M?ISO179/1eaNotchlessimpactstrengthofsimplysupportedbeamsISO179/1eu-30°C90kJ/m²ISO179/1eU23°C110kJ/m²ISO179/1eUNotchedimpactstrengthofcantileverbeam(23°C)5.4kJ/M?ISO180/1AThermalperformanceratingunittestmethodHotdeformationtemperatureunderload(1.8MPa,UNannealed)90.0°CASTMD648,ISO75-2/AMeltingtemperature1166°CISO11357-3LinearcoefficientofthermalexpansionISO11359-2Flow1.0e-4cm/cm/°CISO11359-2Transverse1.0e-4cm/cm/°CISO11359-2InjectionratingunitsystemDryingtemperature:80.0to100°CDryingtime:3.0HRThetemperatureatthebackofthebarrelis170to180°CThetemperatureinthemiddleofthebarrelis180to190°CTemperatureatfrontofbarrel180to190°CNozzletemperature190to200°CProcessing(melt)temperature180to200°CMoldtemperature:80.0to120°CInjectionpressure:60.0to120MPaTheinjectionspeedwasslowtomediumHoldingpressure60.0to120MPaBackpressure:0.00to0.500MPaPOM共聚甲醛是由美国Celanese公司1960年发明，并于1962年实现工业化生产，随后德国Hoechst和Celanese的合资公司Hoechst-Celanese、美国BASF、日本的宝理公司和旭化成公司、三菱***化学公司纷纷投入生产。随后巴斯夫公司、三菱***公司、宇部兴产公司、宝理和旭化成对合成过程进行了改进，各自具有独特的技术特点。宇部兴产公司在聚合过程中采用气相法。巴斯夫和三菱***公司所用溶剂为二氯***，以***(或二氧戊环)为共聚单体。旭化成公司采用POM甲缩醛氧化直接合成70%高浓度甲醛的工艺。)