Uma ufuna izintambo nezintambo ezinhle kakhulu, ukukhetha izinto zokubopha ezifanele kubalulekile. I-sheath yangaphandle inemisebenzi eyahlukahlukene ukuqinisekisa ukuqina, ukuphepha kanye nokusebenza kwekhebula noma ucingo. Akuvamile ukuthi kudingeke unqume phakathi kwe-polyurethane (PUR) kanyei-polyvinyl chloride (i-PVC)Kulesi sihloko, uzofunda ngomehluko wokusebenza phakathi kwezinto ezimbili kanye nezinhlelo zokusebenza okufanelekela kakhulu into ngayinye.
Isakhiwo sokugoba kanye nomsebenzi ezintanjeni nasezintanjeni
I-sheath (ebizwa nangokuthi i-sheath yangaphandle noma i-sheath) iwungqimba olungaphandle lwekhebula noma ucingo futhi isetshenziswa kusetshenziswa enye yezindlela eziningana zokukhipha. I-sheath ivikela abaqhubi bekhebula nezinye izingxenye zesakhiwo ezintweni zangaphandle njengokushisa, ukubanda, ukumanzi noma amakhemikhali kanye nethonya lomshini. Ingalungisa futhi ukuma nesimo somqhubi obambekile, kanye nengqimba yokuvikela (uma ikhona), ngaleyo ndlela inciphise ukuphazamiseka kokuhambisana kwe-electromagnetic yekhebula (i-EMC). Lokhu kubalulekile ukuqinisekisa ukudluliswa kwamandla, isignali, noma idatha ngaphakathi kwekhebula noma ucingo. I-sheathing nayo idlala indima ebalulekile ekuqineni kwezintambo nezintambo.
Ukukhetha izinto ezifanele zokubopha kubalulekile ekunqumeni ikhebula elifanele kakhulu kuzo zonke izinhlelo zokusebenza. Ngakho-ke, kubalulekile ukwazi ukuthi ikhebula noma ucingo kumele lufeze yiphi injongo nokuthi yiziphi izidingo okumele luhlangabezane nazo.
Izinto ezivame kakhulu zokubopha
I-Polyurethane (PUR) kanye ne-polyvinyl chloride (PVC) yizinto ezimbili ezisetshenziswa kakhulu zokubopha izintambo nezintambo. Ngokubukeka, akukho mehluko phakathi kwalezi zinto, kodwa zibonisa izakhiwo ezahlukene ezenza zifanelekele izinhlelo zokusebenza ezahlukene. Ngaphezu kwalokho, ezinye izinto eziningana zingasetshenziswa njengezinto zokubopha izintambo, okuhlanganisa irabha yezentengiselwano, ama-thermoplastic elastomers (TPE), kanye nama-compounds epulasitiki akhethekile. Kodwa-ke, njengoba zingavamile kakhulu kune-PUR kanye ne-PVC, sizoziqhathanisa lezi ezimbili kuphela esikhathini esizayo.
I-PUR - Isici esibaluleke kakhulu
I-Polyurethane (noma i-PUR) ibhekisela eqenjini lamapulasitiki athuthukiswe ngasekupheleni kwawo-1930. Ikhiqizwa ngenqubo yamakhemikhali ebizwa ngokuthi i-addion polymerization. Izinto zokusetshenziswa ngokuvamile ziyi-petroleum, kodwa izinto zezitshalo ezifana namazambane, ummbila noma ama-beet ashukela nazo zingasetshenziswa ekukhiqizweni kwayo. I-Polyurethane iyi-elastomer ye-thermoplastic. Lokhu kusho ukuthi ziyaguquguquka uma zifudunyezwa, kodwa zingabuyela esimweni sazo sokuqala uma zifudunyezwa.
I-polyurethane inezakhiwo ezinhle kakhulu zemishini. Le nto inokumelana okuhle kakhulu nokuguguleka, ukumelana nokusika kanye nokumelana nokudabuka, futhi ihlala iguquguquka kakhulu ngisho nasemazingeni okushisa aphansi. Lokhu kwenza i-PUR ifaneleke kakhulu kuzinhlelo zokusebenza ezidinga ukunyakaza okuguquguqukayo kanye nezidingo zokugoba, njengokudonsa amaketanga. Ezisetshenzisweni zerobhothi, izintambo ezine-PUR sheathing zingamelana nezigidi zemijikelezo yokugoba noma amandla aqinile okugoba ngaphandle kwezinkinga. I-PUR iphinde imelane kakhulu namafutha, izinyibilikisi kanye nemisebe ye-ultraviolet. Ngaphezu kwalokho, kuye ngokwakheka kwento, ayinayo i-halogen futhi ayilawuli ilangabi, okuyizinto ezibalulekile zezintambo eziqinisekiswe yi-UL futhi ezisetshenziswa e-United States. Izintambo ze-PUR zivame ukusetshenziswa ekwakhiweni kwemishini kanye nefektri, ezenzakalelayo zezimboni, kanye nasembonini yezimoto.
I-PVC - isici esibaluleke kakhulu
I-Polyvinyl chloride (PVC) iyipulasitiki ebilokhu isetshenziswa ukwenza imikhiqizo ehlukene kusukela ngawo-1920. Ingumkhiqizo we-gas chain polymerization ye-vinyl chloride. Ngokungafani ne-elastomer PUR, i-PVC iyi-thermoplastic polymer. Uma izinto ziguquguquka ngaphansi kokushisa, azikwazi ukubuyiselwa esimweni sazo sokuqala.
Njengezinto zokubopha, i-polyvinyl chloride inikeza amathuba ahlukahlukene ngoba iyakwazi ukuzivumelanisa nezidingo ezahlukene ngokushintsha isilinganiso sayo sokwakheka. Umthamo wayo womthwalo womshini awuphezulu njenge-PUR, kodwa i-PVC nayo iyonga kakhulu; Intengo emaphakathi ye-polyurethane iphakeme ngokuphindwe kane. Ngaphezu kwalokho, i-PVC ayinaphunga futhi imelana namanzi, i-asidi kanye nezinto zokuhlanza. Yingakho ivame ukusetshenziswa embonini yokudla noma ezindaweni ezinomswakama. Kodwa-ke, i-PVC ayinayo i-halogen, yingakho ibhekwa njengengafanele ukusetshenziswa endlini ethile. Ngaphezu kwalokho, ayimelani namafutha ngokwemvelo, kodwa le mpahla ingatholakala ngezithasiselo ezikhethekile zamakhemikhali.
Isiphetho
Kokubili i-polyurethane ne-polyvinyl chloride kunezinzuzo nezinkinga zazo njengezinto zokubopha ikhebula nezintambo. Ayikho impendulo ecacile yokuthi iyiphi impahla engcono kakhulu kuhlelo ngalunye; Kuxhomeke kakhulu ezidingweni zomuntu ngamunye zohlelo lokusebenza. Kwezinye izimo, izinto zokubopha ezihluke ngokuphelele zingaba yisisombululo esingcono kakhulu. Ngakho-ke, sikhuthaza abasebenzisi ukuthi bafune iseluleko kochwepheshe abajwayelene nezakhiwo ezinhle nezimbi zezinto ezahlukene futhi abangalinganisana.
Isikhathi sokuthunyelwe: Novemba-20-2024