泰科纳POM M270
泰科纳POMM270---acetalcopolymergradeM270™isalowermolecularweight,high-flowgradedesignedforsuperiormoldabilityinmulti-c***ity,intricateorhardtofillmoldsapplications.ChemicalabbreviationaccordingtoISO1043-1:POMPleasealsoseeHostaform®C27021.PhysicalperformanceratingunitsystemtestmethodSpecificgr***ity:1.41g/cm?ASTMD792,ISO1183MVR(190°C/2.16kg)23.0cm3/10minISO1133ShrinkageFlow2.2%ASTMD955Transverseflow1.8%ASTMD955Verticalflowdirection1.6%ISO294-4Flowdirection1.7%ISO294-4WaterabsorptionISO62Saturated,23°C0.75%ISO62Balanced,23°C,50%RH0.20%ISO62MechanicalpropertiesratingunitsystemtestmethodTensilemodulus2800MPaISO527-2/1A/1TensilestrengthYield,23°C60.7MPaASTMD638Yield:67.0MPaISO527-2/1A/50Tensilestrain(yield)8.0%ISO527-2/1A/50TensilecreepmodulusISO899-11hr2300MPaISO899-11000hr1300MPaISO899-1Bendingmodulus(23°C)2750MPaISO178ImpactperformanceratingunitsystemtestmethodNotchedimpactstrengthofsimplysupportedbeam(23°C)5.2kJ/M?ISO179/1eaNotchlessimpactstrengthofsimplysupportedbeamsISO179/1eu-30°C110kJ/m²ISO179/1eU23°C120kJ/m²ISO179/1eUNotchedimpactstrengthofcantileverbeam(23°C)5.4kJ/M?ISO180/1A韩国工程塑料POM虽然是综合性能较好的工程塑料,但为了进一步改善其耐热性、刚性、尺寸稳定性、耐疲劳性、耐蠕变性和力学性能,往往对聚甲醛进行复合增强,以满足各种特殊用途的使用。聚甲醛复合增强中所使用的填料,主要有长短玻璃纤维、碳纤维、玻璃微珠、滑石粉或钛酸钾晶须等。Hoechst公司的长纤维增强POM的落标冲击强度为普通纤维增强聚甲醛的8倍,它推出的两种25%玻璃纤维增强聚甲醛,强度***高,其拉伸强度高达128MPa,并具有优良的热性能,低摩擦性、耐磨性、抗蠕变性和耐低温性,常可用于制造性能要求严格的零部件,如燃油系统零件、车窗升降摇柄、安全控制部件及泵叶轮、泵壳等。)