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    Beijing Haier Kehua Engineering Plastics Co., Ltd.

    Beijing Haier Kehua Engineering Plastics Co., Ltd.

    • Categories:Engineering case
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    • Time of issue:2020-07-31 10:09
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    (Summary description)BeijingHaierKehuaEngineeringPlasticsCo.,Ltd.?Atthebeginningof2008,ourcompanyhaswonthetrustofBeijingHaierChemicalCo.,Ltd.withitshigh-qualityequipmentandsincereserviceattitude,andhasestablishedalong-termfriendlyandstablebusinessrelationshipwithit.Sofar,ourcompanyhasprovidedninecompaniesTwin-screwextrusionproductionline,modelsareSHJ35,SHJ55,SHJ65,SHJ75,etc.Andwithitspersistenthighqualityandexcellentservice,itishonoredtobeassessedbyBeijingHaierChemicalCo.,Ltd.asa"QualifiedSupplierinMainlandChina".Itisanxiousforcustomersandsolvesproblemsforcustomersinthefirsttime.Ourcompanywillpersistinimplementingit.,Toservethemajorityofuserswithamorecourteousandhigh-qualityindustryattitude.

    Beijing Haier Kehua Engineering Plastics Co., Ltd.

    (Summary description)BeijingHaierKehuaEngineeringPlasticsCo.,Ltd.?Atthebeginningof2008,ourcompanyhaswonthetrustofBeijingHaierChemicalCo.,Ltd.withitshigh-qualityequipmentandsincereserviceattitude,andhasestablishedalong-termfriendlyandstablebusinessrelationshipwithit.Sofar,ourcompanyhasprovidedninecompaniesTwin-screwextrusionproductionline,modelsareSHJ35,SHJ55,SHJ65,SHJ75,etc.Andwithitspersistenthighqualityandexcellentservice,itishonoredtobeassessedbyBeijingHaierChemicalCo.,Ltd.asa"QualifiedSupplierinMainlandChina".Itisanxiousforcustomersandsolvesproblemsforcustomersinthefirsttime.Ourcompanywillpersistinimplementingit.,Toservethemajorityofuserswithamorecourteousandhigh-qualityindustryattitude.

    • Categories:Engineering case
    • Author:
    • Origin:
    • Time of issue:2020-07-31 10:09
    • Views:
    Information
    Beijing Haier Kehua Engineering Plastics Co., Ltd.
      At the beginning of 2008, our company has won the trust of Beijing Haier Chemical Co., Ltd. with its high-quality equipment and sincere service attitude, and has established a long-term friendly and stable business relationship with it. So far, our company has provided nine companies Twin-screw extrusion production line, models are SHJ35, SHJ55, SHJ65, SHJ75, etc. And with its persistent high quality and excellent service, it is honored to be assessed by Beijing Haier Chemical Co., Ltd. as a "Qualified Supplier in Mainland China". It is anxious for customers and solves problems for customers in the first time. Our company will persist in implementing it. , To serve the majority of users with a more courteous and high-quality industry attitude.

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    About the structure process analysis of twin screw extruder

    About the structure process analysis of twin screw extruder

    Next,theeditorofJuliwillgiveyouabriefintroductionaboutthestructureandprocessanalysisofthetwin-screwextruder:??1.Plasticizingarea??Theplasticizingzoneistoheattheinjectedresintoformamoltenstate.Theconditionssuchastheheatingtemperatureandtimeinthisregionarenotparticularlylimitedaslongasthefluoropolymerhavingaspecificunstableterminalgroupisinamoltenstate.Inthelatterhalfoftheplasticizationzone,itispreferabletoprovidedevolatilizationholestoremoveatleastapartofvolatilecomponentsundernormalpressureorreducedpressure.Then,thepartialpressureofvolatilecomponentsinthestabilizationregiondescribedlatercanbereduced,andthestabilizationtreatmentcanbeeffectivelypromoted.??2.Stabilizationtreatmentarea??ThestabilizationzoneistomeltandkneadandconvertspecificunstableendgroupsintoaCF2H.Thestabilizationtreatmentareaispreferablyformedbyusingakneadingdiscwithoutpropulsion.Here,melt-kneadingiscarriedoutinthepresenceofwaterandoxygen.Itcandirectlyintroducepurewater,ionexchangewater,etc.orwatervapor;itcanalsobeaccompaniedbythefluoropolymertobetreated.Theamountofwateraddedisthesameasthenumberofunstableterminalgroups,butitisactuallypreferabletosupplyanexcessamount,forexample,atleast10timestheamount.Thepressureinthestabilizationzoneisgenerallycontrolledat0.2~10MPa,andthesettemperatureiscontrolledat280~430℃.Thetimetomaintainpressurizationisusuallylessthan10minutes.??Accordingtotheprincipleoftheextrudertoremoveunstableendgroups,themelt-kneadinginthestabilizationzoneispreferablycarriedoutinthepresenceofoxygeninadditiontothepresenceofwater.Airisusuallyusedintermsofeconomy.Inthepresenceofoxygen,thecarbongeneratedbythemoltenkneadedproductisalsoburned,whichcaninhibitthecoloringofthefluoropolymer.Oxygenisaninertgastotheunstableterminalgroupscarboxylandfluorinatedacylgroups.Duringtheprocessofmeltingandkneading,itcanimprovethedevolatilizationefficiencyofvolatilecomponents.??Three,devolatilizationarea??Thedevolatilizationzoneremoveshigh-temperaturevolatilecomponentsgeneratedbythedecompositionofspecificunstableterminalgroups.Theabsolutepressurevariesaccordingtothemoltenstateofthemoltenkneadedproductandtheoperatingconditionsofthescrewofthekneader.Generally,thepressureisreducedtothepointwherethemoltenkneadedproductdoesnotintrudeintotheexhaustnozzle.Itcanbe0.01to0.1MPa,andthetemperatureiscontrolledat25O~Claughataround.??Inthepresenceofacertainamountofwaterandoxygen,FEPextrudingthroughatwin-screwextrudercaneffectivelyremovetheunstableterminalgroupsofFEP.SimplifiestheprocessingprocessofFEPunstableendgroupsandsavesproductioncosts.Whentheobtainedstabilizedpolymerismelt-formed,nobubblesorvoidsaregeneratedinthefinishedproduct,anditisnotcolored.?Formoreinformationabouttwinscrewextruders,pleasevisithttp://www.njjl.com/
    發布時間 : 2020-07-30 點擊 : 0

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