Ukuqonda okujulile kwesimiso sokusebenza nokusetshenziswa kwefilimu ephefumulayo engangeni manzi
Ifilimu ephefumulayo engenamanzi iwuhlelo lokusebenza lomkhiqizo olususelwa kubuchwepheshe bokuhlukanisa ulwelwesi. Ifilimu eyenziwe ngenqubo ekhethekile futhi inokungena okukhethekile. Ingavumela amagesi athile amancane kunombobo wefilimu ephefumula amanzi ukuthi idlule ngaphansi kwezici zayo, futhi ayikwazi ukuvumela ezinye izinto ezifana namaconsi amanzi amakhulu kunombobo wefilimu ephefumula amanzi ukuthi idlule. Kungenxa yemvelo yefilimu ephefumulayo engenamanzi ukuthi amanye ama-molecule amancane angadlula, futhi amanye ama-molecule amakhulu awakwazi ukudlula ifilimu ephefumulayo engenamanzi, ngakho-ke kusukela ngawo-1960 wekhulu leminyaka elidlule, ifilimu ephefumulayo engenamanzi iye yathuthukiswa ngokushesha. Okwamanje, kukhona ikakhulukazi PTFE, PES, PVDF, PP, PETE kanye nezinye ulwelwesi filtration, ngenxa enhle amakhemikhali ukuzinza ePTFE materials, izakhiwo zemvelo hydrophobic futhi esetshenziswa kuzo zonke izigaba zokuphila.
Umgomo wokusebenza we-membrane ephefumulayo engangeni manzi
Esimweni somhwamuko wamanzi, ububanzi bama- molecule omusi wamanzi bucishe bube yi-microns engu-0.0004, kanti ububanzi obuncane bamaconsi amanzi bungama-microns angama-20. Ukuba khona kongqimba oluphefumulayo lwe-polymer oluqukethe ama-micropores efilimu engaphefumuli amanzi lwenza amangqamuzana omhwamuko wamanzi asodongeni aphume kahle kulwelwesi lwe-microporous ngokusebenzisa isimiso sokusabalalisa, kunciphisa ngempumelelo inkinga yokufingqa odongeni lwangaphandle. Ngenxa yobubanzi obukhulu bamanzi awuketshezi noma amaconsi amanzi ngaphandle kodonga, ama-molecule amanzi awakwazi ukungena esuka ebuhlaluni bamanzi aye kolunye uhlangothi, okwenza ifilimu ephefumulayo ingangeni manzi.
Ngaphansi kwezimo ezijwayelekile, amadivaysi amaningi kanye nezicelo zawo zidinga indawo evalekile yokuvala, engakwazi ukuthintwa uthuli lwangaphandle, amanzi, namagciwane. Uma umklamo uvaliwe ikakhulukazi, ngaphansi kwezimo zenhloso yokushisa okuzungezile kanye nezinguquko ze-latitude, kuzoholela ekushintsheni kwengcindezi ngaphakathi kwemishini, ngokuvamile lokhu kuguqulwa kwengcindezi kuzoveza umphumela othile wokuhlushwa, ozobhubhisa izingxenye ezibucayi zegobolondo lemishini futhi ingaphakathi. Ukusetshenziswa kwe-ePTFE ulwelwesi oluphefumulayo olungangeni manzi lungaqhubeka nokulinganisela umehluko wengcindezi yezinto zokusebenza, kunciphise izindleko zokuklanywa kwengxenye, futhi kuqinisekise ukwethembeka komkhiqizo.
Izici zefilimu eliphefumulayo elingangeni manzi ePTFE
Amanzi: i-microhole engu-0.1-10μm, imbobo ingaphansi kuka-10,000 ubuhlalu bamanzi, ukuze amanzi angakwazi ukudlula, avikele ngokuphumelelayo izingxenye ezibucayi, agweme ukuguguleka kwamanzi, athuthukise impilo yomkhiqizo.
Ukungena komoya: ububanzi be-micropore bukhulu izikhathi ezingu-700 kunomhwamuko wamanzi, bungangeni manzi ngesikhathi esifanayo, okuvumela umoya ukuba udlule ngokushelela, kungashisisa kahle ukushisa, kuvimbele udonga lwangaphakathi lwenkungu yomkhiqizo, ukulinganisela ukucindezela kwesikhala sangaphakathi nangaphandle.
Ukuvimbela uthuli: Isiteshi se-microporous sakha isakhiwo se-mesh esinezinhlangothi ezintathu kwifilimu, futhi ukusatshalaliswa okufanayo nokuminyene kwama-micropores kwenza uthuli luvimbele ukuhlangana, ukuze kuzuzwe umphumela osebenzayo wokuvimbela uthuli, futhi ubuncane bungathatha izinhlayiya ezingu-0.1μm.