PPS6565A6日本宝理---Precauti***forsettingmoldingconditi***:(1)BarreltemperatureWhenthebarreltemperatureunderthehopperisexcessivelyreduced,thefrictionbetweenbarrelandscrewwilltendtoincrease.Ifthereisnoproblemwithfluidity,asmalldropintemperaturewillhelpreduceretentiondiscoloration.Especiallyfornonblackmoldingproducts,thebestsettingis300-320℃.(2)MoldtemperatureThedietemperaturehasagreatinfluenceontheproperties.Fromtheappearance,dimensionalstability,heatresistanceandcreepresistance,themoldtemperatureshouldbehigherthan130℃butnotlowerthan120℃.(3)InjectionpressureGenerally,theinjectionpressureof30-100mpaispreferred.Inordertoreduceflash,lowpressureformingisrecommended.(4)InjectionrateInordertoobtaingoodappearance,highspeedinjectionshouldbecarriedout.However,highspeedinjectioniseasytocausewarpageandscorch,soaslongastheappearanceisgood,thereisnoneedtooverusehighspeedinjection.(5)BackpressureInordertokeepthemeasurementstable,itissuggestedtosetthebackpressureat2~5MPa.Whenthemeasurementisunstable,thebackpressurecanbeslightlyincreasedto8-10mpa.(6)ScrewspeedGenerally40-100rpmissuitable.Therotationspeedshouldnotexceed200rpm,otherwiseitwillcauseglassfibercuttingandresinheating.(7)RetentioninbarrelEvenifdurafideremainsinthebarrelforalongtime,itsviscositywillnotincreasesignificantly.Therefore,theuseofhotrunneriseffective.PPS6565A6日本宝理---物理性能额定值单位制测试方法密度1.96g/cm³ISO1183吸水率(23°C,24hr)0.010%ISO62机械性能额定值单位制测试方法拉伸应力125MPaISO527-2拉伸应变(断裂)1.0%ISO527-2弯曲模量18200MPaISO178弯曲应力165MPaISO178冲击性能额定值单位制测试方法简支梁缺口冲击强度4.5kJ/m²ISO179/1eA热性能额定值单位制测试方法热变形温度(1.8MPa,未退火)275°CISO75-2/A线形热膨胀系数流动1.0E-5cm/cm/°C横向3.0E-5cm/cm/°C)