POMM270-48保理---NomatterforhomopolymerPOMorcopolymerPOM,whenmoldingthin-walledormultic***ityproducts,theinjectionspeedshouldbefaster.Thisisbecausetheinjectionmoldingofsuchpartsrequiresthesystemtoh***eagoodflowperformance.Asmentionedabove,POMmeltisashearsensitivepolymer.Toincreasetheflowperformance,theinjectionspeedcanbeincreased.Atthesametime,intheaboveapplicati***,thecoolingrateofPOMcrystalwillbeveryfast,andthesurfacedefectssuchaswrinkles,stripesandweldlineswilleasilyoccurontheproducts.Therefore,itisnecessarytoimprovetheinjectionspeed.Whenmoldingtheproductswithlargerwallthickness,aslightlyslowerinjectionspeedcanbeusedtopreventthegaswrappedinthematerialfromeffectivelydischargingduetothetoofastinjectionspeed.Relativelyspeaking,theinjectionspeedofhomopolymerPOMishigherthanthatofcopolymerizedPOM.M270-48物性表物理性能额定值单位测试方法密度1.40ISO1183机械性能额定值单位测试方法拉伸强度61MPaISO527-1,-2断裂应变30%ISO527-1,-2拉伸弹性模数2600MPaISO527-1,-2弯曲强度85MPaISO178弯曲模量2500MPaISO178简支梁缺口冲击强度5.3KJ/mISO179/1eA电气性能额定值单位测试方法体积电阻率1×10Ω.cmIEC60093表面电阻率1×10ΩIEC60093热性能额定值单位测试方法热变形温度95℃ISO75-1,-2线膨胀系数ISO11359-2(流动方向)11(垂直方向)11阻燃性HB)