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Changzhou Sujin Polymer Technology Co., Ltd.

Changzhou Sujin Polymer Technology Co., Ltd.

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  • Time of issue:2020-07-31 10:07
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(Summary description)

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Changzhou Sujin Polymer Technology Co., Ltd.

Changzhou Sujin Polymer Technology Co., Ltd.

新闻

Changzhou Sujin Polymer Technology Co., Ltd.

(Summary description)

  • Categories:Engineering case
  • Author:
  • Origin:
  • Time of issue:2020-07-31 10:07
  • Views:
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Changzhou Sujin Polymer Technology Co., Ltd. In 2007, our company and Changzhou Sujin Polymer Co., Ltd. successfully reached the first phase of equipment supply agreement, including five SHJ75 twin-screw extruders; in 2010, it successfully reached the second phase of batch production. The equipment supply agreement includes ten series of twin-screw extrusion lines such as SHJ75B and SHJ75D.

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Next: Jiangsu Hongyi Biochemical Technology Co., Ltd.
Previous: Beijing Haier Kehua Engineering Plastics Co., Ltd.
Next: Jiangsu Hongyi Biochemical Technology Co., Ltd.
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/
发布时间 : 2020-07-30 点击 : 0
What are the technical parameters of a single screw extruder

What are the technical parameters of a single screw extruder

Next,theeditorofJuliwillgiveyouabriefintroductionaboutthetechnicalparametersofthesinglescrewextruder? 1.Screwdiameter:referstothediameteroftheoutercircleofthescrew,representedbyD,andtheunitismillimeter(mm).2.Screwlength-to-diameterratio:referstotheratioofthelengthLoftheworkingpartofthescrew(thelengthofthethreadedpart,thatis,thelengthfromthecenterlineofthefeedingporttotheendofthescrew)andthescrewdiameterD,expressedbyL/D.3.Rangeofscrewrotationspeed:referstothemaximumrotationspeedofthescrewtotheminimumrotationspeedofthescrew;nrepresentsthescrewrotationspeed,andtheunitisrevolutionsperminute(r/min).HuahongAnswer4.Powerofthedrivingmotorofthemainscrew:ExpressedbyP,theunitiskilowatt(kW).5.Heatingpowerofextruderbarrel:ExpressedbyE,theunitiskilowatt(kV).6.Theproductioncapacityoftheextruder:expressedbyQ,theunitiskilogramperhour(kg/h).7.Theheightofthecenteroftheextruder:referstothedistancefromthecenterlineofthescrewtotheground,expressedbyH,andtheunitismillimeter(mm).8.Externaldimensionsoftheextruder:referstothetotallength×totalwidth×totalheight,expressedbyL×W×H,andtheunitismillimetersormeters(mmorm)9.Extruderquality:expressedbyW,theunitiskilogramorton(kgort)
发布时间 : 2020-07-30 点击 : 0
Two more effective cleaning agents for starting the double screw extruder

Two more effective cleaning agents for starting the double screw extruder

Next,Iwillgiveyouabriefintroductiontotwomoreeffectivecleaningagentsforstartingthedoublescrewextruder:    1.Mixture:50%HDPE+50%diatomaceousearth    2.Mixture:HDPE+water+decontaminationpowder.TheHDPEisfedintothescrewattheusualspeedatthemeltingtemperature.Stirthedecontaminationpowderwithwaterinabuckettoformaslurry,andslowlyaddtheslurryfromthemainfeedport.Theseslurriesimpact,rub,andcleanthescrewduetofoaming.    Formoreinformationabouttwinscrewextruders,pleasevisithttp://www.njjl.com/
发布时间 : 2020-07-30 点击 : 0

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