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Cuir: Uimh.75 Bóthar Tian'an, Jimei Dúiche, Xiamen, Fujian
O Fáinne Fkm 75
FKM ORing Tá aicmiú FKM bunaithe ar ábhar fluairín nó ar a meicníocht trasnasctha, chomh maith lena gcomhdhéanamh ceimiceach. Gné bhreise de FKManna is ea frithsheasmhacht in aghaidh ceimiceán agus teasa. I measc na gcuideachtaí a tháirgeann FKManna tá Dyneon Fluoroelastomers (3M), Polaiméirí Speisialtachta Solvay HaloPolymer (Elaftor), Daikin Chemical chomh maith le roinnt déantúsóirí ón tSín. Tá praghas Flooroelastomers níos airde ná praghas rubair nítríle nó neoprene.
FKMORingTheclassificationofFKMisbaseduponthecontentoffluorineortheirmechanismofcrosslinking, aswellastheirchemicalcomposition.ResistancetochemicalsandheatisanaddedfeatureofFKMs.CompaniesthatproduceFKMsincludeDyneonFluoroelastomers (3M), HaloPolymer (Elaftor) SolvaySpecialtyPolymers, DaikinChemicalaswellasanumberofmanufacturersfromChina.ThepriceofFlooroelastomersishigherthanthatofnitrilerubberorneoprene.
ThefollowingclassificationofFKMsisbasedaccordingtotheirchemicalcomposition.
Cineál1FKMsischaracterisedbya66weightpercentageofcontentinflourine.Theydisplayexcellentperformanceinmostareasofapplications.CompositionofType1FKMsisthatofVDF (Vinylidenefluoride) agusHFP (hexafluoropropylene).
Cineál2FKMsistypifedbyanenhancementinthermalandchemicalresistance.Negativelyaffectedarepropertiesofflexibilityatlowtemperatureaswellascompressionset.
Type3FKMs.Generally, thecontentoffluorineaveragesfrom62percentto68percent.FlexibilityatlowtemperatureisenhancedforType3FKMsasaresultoftheadditionofPMVE (perfluoromethylvinylether) Type3FKMsaremadeupofPMVE, TFEANDVDF.
Cineál 4FKMsgenerallyhavea67percentbyweightoffluorinecontent.Type4FKMshaveenhancedbaseresistance.However, swellingcharacteristicsareworsenedparticularlyincontactwithhydrocarbons.ThecompositionofType4FKMsareVDF, TFEANDpropylene.
Cineál5FKMs.HightemperatureresistancetohydrogensulphideaswellasbaseresistanceareknownpropertiesofType5FKMs.CompositionofType5FKMsarePMVE (perfluoromethylvinylether), TFE, HFP, VDFandethylene.
Clibeanna Te: o fáinne fkm 75, déantúsóirí, soláthraithe, monarcha, saincheaptha, mórdhíola
