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Experimental extruder roller

Production extrusion and rolling machine

Laboratory High Shear Mixer Series

Wet granulator

FG Fluid bed dryer

FG Fluid bed

The Company covers an area of more than 30 mu,including 20000 m2 scientific research and production plants. it has strong technical force, excellent equipment and advanced technology and experienced, skilled and highly responsible staff. Adhering to the competition philosophy of"independent research and development, mastering core technology and success through quality", the Company, in strict compliance with GMP requirements.

Application and development of phenolic foam
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Abstract:
Phenolicfoamisknownas"thekingofheatpreservation",whichwasusedintheinsulationofmissilesandrocketheadsearly.Inrecentyears,duetohighbuilding,transportation,ship,aviation,spacetechnologyandotheraspectsofsyntheticfoamplastics,thermalstabilityandfireresistancehavebeenputforwardstrictrequirements,sothatphenolicfoamhasdevelopedmorerapidly.Asanewtypeofmulti-purposefoammaterial,phenolicresinfoamhasattractedwideattentionduetoitsadvantagessuchasheatresistance,flameresistance,selfextinguishing,flameresistancepenetration,andnodropinfire.Phenolicfoamisbasedonphenolicresinasthemainrawmaterial,addingcuringagent,foamingagentandotherauxiliarycomponents.Whentheresiniscross-linkedandsolidified,thefoamingagentdispersingthegasandformingthefoamedplasticisformed.Ithasmanyexcellentproperties.1,firstofall,theheat-resistantphenolicfoamiscomposedofseveralphenolringslinkedbymethylenebridge.Thermodynamicsshowsthatthemethylenebridgeisoneofthesmallandstableconnectionsintheorganicmatterconnection,whichmakesthephenolicfoamhaveexcellentthermalstability.Itcanbeusedforalongtimeat150Canditsinstantaneousworkingtemperaturecanreachover200-300.Itshightemperatureresistanceisobviouslybetterthanthatofotherfoamplastics.2"Flammability"isalsoprominent.Phenolmoleculesaregoodfreeradicalabsorbents.Thefreeradicalsproducedbythebrokenmethylenebridgeduringhightemperaturedecompositionarerapidlyabsorbedbyphenolmolecules,whichpreventsthereactionfromcontinuing.Thisphenomenonmakesthephenolicfoamextremelyhardtoburn,andthephenolicfoamoxygenindexis50,withoutaddinganyflameretardantadditives.TheflameretardantgradeisB1.Class.Thehighdensityphenolformaldehydefoamindexwithinorganicfillercanreach70,anditscombustionperformancecanmeettherequirementsofGermanDIN4102buildingmaterialsA2class.Resistancetoflamepenetration.Accordingtoexperts,phenolicfoamhasdirectcarbondioxide,nodripping,nocurlandnomeltingphenomenon.Afterflameburning,foamremainsbasically.Onlyalayerof"graphitefoam"isformedonthesurface,whicheffectivelyprotectsthefoamstructureinthelayer.Itisalso"lowtoxicandlowsmoke"-onlycarbon,hydrogenandoxygenatomsinphenolicmoleculescanonlyproducethese3productswhendecomposingathightemperature.ThereisnoothertoxicgasexceptasmallamountofCO.Thesmokedensityofphenolicfoamis5%,andthatofhighdensityphenolicfoamisonly2.3%,whichisquitelowcomparedwiththesmokedensityof74%PUfoam.3insulation:phenolicfoamhasauniformmicroclosedcellstructure,lowthermalconductivity,itsadiabaticperformanceissimilartothatofPUfoam,superiortoPSfoam,anditsthermalinsulationperformanceisabouttwiceashighasthatofmineralwool,lightcork,perlite,glasswool,andothertraditionalthermalinsulationmaterials.Thetemperaturerangeiswide.Thestrengthofphenolicfoamisnotaffectedobviouslybytemperature.Atlowtemperatures(even-196degrees),thecoldshrinkageandcoldbrittlenessdonotoccur.Themechanicalstrengthofphenolicfoamisbasicallyunchanged.90%oftheroomtemperaturestrengthcanbemaintainedat130Ccontinuously.Usuallythetemperaturerangeis-150-150C.Corrosionresistanceandaging:inadditiontobeingattackedbystrongalkali,phenolicfoamisalmostresistanttoallinorganicacids,organicacidsandsalts.Phenolicfoamisoneofthemostpromisinginsulationmaterialsintheworld.Becausethisnewmaterialisessentiallydifferentfromthematerialobtainedbyaddingflameretardantincommonmacromoleculeresin.Itdoesnotburn,meltoremittoxicsmokeinfire.Italsohastheadvantagesoflightweight,non-toxic,non-corrosive,heatpreservation,energysaving,soundinsulationandlowprice.ItdoesnotneedFreonfoaming,andhasnoenvironmentalpollution.Itscomprehensiveperformanceisincomparablewithallkindsofinsulationmaterialsatpresent.Itiswidelyusedintheheatpreservationofthecentralair-conditioningsystemofhighriseandhigh-risebuildingssuchashotels,apartments,hospitalsandsoon.ThecentralairconditioningsystemofHongkong'sadvancedbuildingshasbeenmostlyconvertedtophenolicfoaminrecentyears.Thereareindisputablecomprehensiveadvantagesforrefrigeration,coldstorage,thermalinsulationofindustrialpipelinesandequipmentusedinpetrochemicalindustry,buildingpartitionwall,exteriorwallcompositeboard,ceiling,soundabsorptionboardandsoon.Itsolvestheproblemofunsatisfactoryfireprotectionperformanceofotherorganicmaterials,whileinorganicmaterialshavehighwaterabsorption,easydewandskinduringconstruction.Theitchingproblemisthethirdgenerationinsulationmaterialofairconditioningsystemandvariouselectricalappliances.
Selection of drying equipment according to material status
$info.title
Abstract:
Dryingcanbedividedintotwocategories,onerequiresthatafterdrying,rawmaterialsremaintheoriginalshape,suchasmanykindsoffooddrying,buildingmaterialsdrying,etc.Theotheristodryliquid,muddy,massiveandpowderymaterialsintopowderyorgranularproducts.Somedryingprocesses,especiallythedryingofdrugs,hopenottodestroytheoriginalcrystalshape.Inpharmaceuticalproduction,liquidandpowdermaterialsareoftenusedtoreachacertainsizeofparticlesafterdrying.Therearealsotechnicalproblemsinthefeedinganddischargingofdryers,andmanyaspectsstillneedtorelyonpracticalexperience.Fromtheeconomicpointofview,thesizeofthetreatmentcapacityisalsooneofthefactorstochoosethetypeofdryingequipment.Table1-7summarizestheselectionofdryersbasedonmaterials.Table1-7selectionofrawmaterialsaccordingtomaterials,suitableinitialdryingconditions,suitabledryingmachinesforlargebatchcontinuoustreatment,smallamountoftreatmentliquid,slurryspraydrying,fluidizedbedmulti-stagedrying,drumtype,vacuumbeltinertmediumfluidizedbedpasteflowdrying,stirringrotarydrying,ventilationbeltdrying,impactwavespraydrying,conductionheatingcylinderstirring.DryingConductionHeatingTankStirringDryingVentilationBoxTypeDryingFlakeTypeBeltVentilationDryingRotarySnakeTubeThroughSteamDryingRotaryVentilationDryingBoxTypeVentilationDryingVacuumCylinderTypeStirringGranularMaterialBeltVentilationDrying,RotaryVentilationDryingVerticalVentilationDryingFluidizedBedDryingRotarySteamSnakeTubefluidizedbedtanktypemixingboxtypeventilationdryingconicalrotarydryermulti-layerdiscdryingpowdermaterialfluidizedbeddryingairflowdryingintermittentfluidizedbeddryingvacuumcylindertypewithstirringshapedmaterialadvectiontunneltypeadvectiontrolleytypeboxtypesheettype,multi-cylindertypesingleormulti-cylindertypecoating,coatingliquidinfraredray,Followingisthegeneralscopeofapplicationofvarioustypesofdryers.Thedetailedapplicationofeachtypeofdryerwillbefurtherintroducedinthefollowingcontent.

Address: No. 5 CITIC Bank Building, Yanghe Sancun,Jiangbei District, Chongqing 17-1
Zip code:400020
Marketing Department:0086-23-67635188       Fax:0086-23-67635187
Manager Wang:0086-13648322239       E-mail:
517536035@qq.com
 International Trade :0086-13996009875      E-mail:tj@cqjg.com
After-sale service:0086-23-67635186       E-mail:yxdcqjg@163.com

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