Plastic Liner Materials

Izinto ze-Liner:PTFE (Polytetrafluoroethylene),PFA (Perfluoroalkoxy),ETFE (Tefzel®, ethylene tetrafluoroethylene),PVDF (Polyvinylidene Fluoride),PP (Polypropylene)…

I-PTFE (Polytetrafluoroethylene)

I-PTFE, i-fluoropolymer esetshenziswa kakhulu, inokumelana nokugqwala okuphezulu kakhulu kwezinga lokushisa eliphezulu cishe kuwo wonke amakhemikhali ngaphandle kwe-elemental fluorine nezinsimbi ze-alkali ezincibilikisiwe.Ngaphezu kwalokho, i-PTFE inezinto ezingezona izinduku ezingajwayelekile ezinganciphisa noma ziqede ukunqwabelana kwamadiphozithi ezindongeni zamapayipi.Amazinga okushisa esevisi kumasistimu amapayipi okucindezela asukela ku -20°F (-29°C) kuya ku-450°F (230°C).

I-PFA (Perfluoroalkoxy)

I-PFA ikhombisa ukumelana kwamakhemikhali okucishe kufane ne-PTFE.Ifanele isevisi kusuka ku-0 ° F kuya ku-450 ° F, i-PFA iyi-thermoplastic e-fluorinated eyaziwa ngamakhono ayo ahlanzekile kakhulu.I-PFA inikezela ukumelana nokukhuphuka okuphezulu ekushiseni okuphezulu, ukuqina kokushisa okuphansi okuhle kakhulu kanye nokumelana nelangabi okuhlukile.

I-ETFE (Tefzel®, ethylene tetrafluoroethylene)

I-Tefzel® ihlanganisa ukuqina kwemishini nokumelana namakhemikhali okuvelele okusondele ku-polymer®.Iqala ukusebenza ukusuka ku -20°F kuya ku-300°F, i-Tefzel icutshungulwa kalula futhi yaziwa ngokumelana kwayo nemisebe yamandla aphezulu.

I-PVDF (i-Polyvinylidene Fluoride)

I-PVDF inokumelana okuhle kakhulu namakhemikhali amaningi, okuhlanganisa ama-halogen nama-oxidants aqinile.I-PVDF ikhombisa ukumelana okuhle nokuhuzuka kanye nokubhoboza.Njengoba i-PSI isebenzisa kokubili i-homopolymer (6″ – 8″ fittings) kanye ne-copolymer resins (1″ – 8″ pipe, 1″ – 4″ fittings), uhlelo lomugqa we-PVDF lukalwe ukusuka ku-0°F (-29°C) kuya 275°F (135°C).Ngenxa yokuthi i-PVDF ine-fluorinated kancane, ukumelana kwayo namakhemikhali kuphazanyiswa izinga lokushisa nokugcwala koketshezi namagesi.

I-PP (i-Polypropylene)

I-PP homopolymer PSI esetshenziswayo inokumelana nokugqwala okuhle, ukumuncwa komswakama okuphansi, kanye nezakhiwo ezinhle zokusebenza.Njengoba ukumelana kwawo namakhemikhali kuthintwa kakhulu ukugxila kanye nezinga lokushisa loketshezi oludluliswayo, ukusetshenziswa kwalo ezinhlelweni zamapayipi okucindezela ngokuvamile kunqunyelwe ukusuka ku-0°F (-16°C) kuya ku-225°F (107°C).