I-PUR okanye i-PVC: Khetha Izinto Ezifanelekileyo Zokugquma

Xa ufuna iintambo kunye neentambo ezilungileyo, ukukhetha izinto ezifanelekileyo zokugquma kubalulekile. I-sheath yangaphandle inemisebenzi eyahlukeneyo ukuqinisekisa ukuqina, ukhuseleko kunye nokusebenza kwentambo okanye ucingo. Akuqhelekanga ukuba kufuneke ukhethe phakathi kwe-polyurethane (PUR) kunyei-polyvinyl chloride (i-PVC)Kule nqaku, uza kufunda ngomahluko wokusebenza phakathi kwezi zinto zimbini kunye nezicelo ezilungele kakhulu isixhobo ngasinye.

Ulwakhiwo kunye nomsebenzi wokugquma kwiintambo kunye neengcingo

I-sheath (ekwabizwa ngokuba yi-outer sheath okanye i-sheath) lulwaleko olungaphandle lwentambo okanye ucingo kwaye lusetyenziswa kusetyenziswa enye yeendlela ezininzi zokukhupha. I-sheath ikhusela ii-cable conductors kunye nezinye izinto zokwakha kwizinto zangaphandle ezifana nobushushu, ukubanda, ukumanzi okanye iikhemikhali kunye neempembelelo zoomatshini. Ingalungisa kwakhona imo kunye nohlobo lwe-stranded conductor, kunye nolwaleko lokukhusela (ukuba lukhona), ngaloo ndlela inciphisa ukuphazamiseka kokuhambelana kwe-electromagnetic yentambo (EMC). Oku kubalulekile ukuqinisekisa ukuhanjiswa rhoqo kwamandla, isignali, okanye idatha ngaphakathi kwentambo okanye ucingo. I-sheathing ikwadlala indima ebalulekileyo ekuqineni kweentambo kunye neentambo.

Ukukhetha izinto ezifanelekileyo zokugquma kubalulekile ekuchongeni intambo efanelekileyo kwisicelo ngasinye. Ke ngoko, kubalulekile ukwazi ukuba intambo okanye ucingo kufuneka lusebenzele yiphi injongo kunye neemfuno ekufuneka zifezekiswe.

Izinto ezixhaphakileyo zokugquma

I-Polyurethane (PUR) kunye ne-polyvinyl chloride (PVC) zezona zinto zimbini zisetyenziswa kakhulu kwi-sheathing kwiintambo kunye neentambo. Ngokubonakalayo, akukho mahluko phakathi kwezi zinto, kodwa zibonisa iimpawu ezahlukeneyo ezenza zifaneleke kwiindlela ezahlukeneyo zokusetyenziswa. Ukongeza, ezinye izinto ezininzi zingasetyenziswa njengezinto zosheathing, kubandakanya irabha yorhwebo, ii-thermoplastic elastomers (TPE), kunye neekhompawundi zeplastiki ezikhethekileyo. Nangona kunjalo, ekubeni zingaqhelekanga kakhulu kune-PUR kunye ne-PVC, siza kuzithelekisa ezi zimbini kwixesha elizayo.

I-PUR - Eyona nto ibalulekileyo

I-Polyurethane (okanye i-PUR) ibhekisa kwiqela leeplastiki ezaphuhliswa ngasekupheleni kweminyaka yoo-1930. Yenziwa yinkqubo yeekhemikhali ebizwa ngokuba yi-addion polymerization. Izinto eziluhlaza zihlala ziyi-petroleum, kodwa izinto zezityalo ezifana neetapile, umbona okanye ii-sugar beet nazo zingasetyenziswa ekuvelisweni kwayo. I-Polyurethane yi-thermoplastic elastomer. Oku kuthetha ukuba ziyaguquguquka xa zifudunyezwa, kodwa zinokubuyela kwimo yazo yokuqala xa zifudunyezwa.

I-Polyurethane ineempawu ezintle kakhulu zoomatshini. Le nto inokumelana nokuguguleka okuhle kakhulu, ukumelana nokusika kunye nokumelana nokukrazula, kwaye ihlala iguquguquka kakhulu nokuba kumaqondo obushushu aphantsi. Oku kwenza i-PUR ifaneleke ngakumbi kwizicelo ezifuna intshukumo eguquguqukayo kunye neemfuno zokugoba, ezifana neetsheyini zokutsala. Kwizicelo zerobhothi, iintambo ezine-PUR sheathing zinokumelana nezigidi zemijikelo yokugoba okanye amandla aqinileyo okujika ngaphandle kweengxaki. I-PUR ikwanokumelana okukhulu neoyile, izinyibilikisi kunye nemitha ye-ultraviolet. Ukongeza, kuxhomekeke kulwakhiwo lwento, ayinayo i-halogen kwaye ayilawuli ilangabi, eziziimpawu ezibalulekileyo kwiintambo eziqinisekisiweyo ze-UL kwaye zisetyenziswa e-United States. Iintambo ze-PUR zisetyenziswa rhoqo kulwakhiwo loomatshini kunye nomzi-mveliso, ukwenziwa kwezinto ngokuzenzekelayo kwimizi-mveliso, kunye nomzi-mveliso weemoto.

I-PVC - eyona nto ibalulekileyo

I-Polyvinyl chloride (PVC) yiplastiki ebisetyenziswa ukwenza iimveliso ezahlukeneyo ukususela ngeminyaka yoo-1920. Yimveliso ye-gas chain polymerization ye-vinyl chloride. Ngokungafaniyo ne-elastomer PUR, i-PVC yi-thermoplastic polymer. Ukuba izinto ziguqukile xa zifudunyezwa, azinakubuyiselwa kwimeko yazo yokuqala.

Njengezinto zokugquma, i-polyvinyl chloride inika amathuba ahlukeneyo kuba iyakwazi ukuziqhelanisa neemfuno ezahlukeneyo ngokutshintsha umlinganiselo wayo wokwakheka. Umthamo wayo womthwalo woomatshini awuphezulu njenge-PUR, kodwa i-PVC ikwanoqoqosho oluphezulu kakhulu; Ixabiso eliqhelekileyo le-polyurethane liphindwe kane. Ukongeza, i-PVC ayinavumba kwaye ayimelani namanzi, i-asidi kunye neearhente zokucoca. Kungenxa yesi sizathu sokuba isetyenziswa rhoqo kwishishini lokutya okanye kwiindawo ezifumileyo. Nangona kunjalo, i-PVC ayinayo i-halogen, yiyo loo nto ithathwa njengengafanelekanga kwizicelo ezithile zangaphakathi. Ukongeza, ayimelani neoyile ngokwemvelo, kodwa le propati inokufezekiswa ngezongezo ezikhethekileyo zeekhemikhali.

Isiphelo

Zombini i-polyurethane kunye ne-polyvinyl chloride zinezibonelelo kunye neengxaki zazo njengezixhobo zokugquma intambo kunye nocingo. Akukho mpendulo icacileyo yokuba zeziphi izinto ezifanelekileyo kwisicelo ngasinye; Kuxhomekeke kakhulu kwiimfuno zomntu ngamnye zesicelo. Kwezinye iimeko, izinto zokugquma ezahluke ngokupheleleyo zinokuba sisisombululo esifanelekileyo. Ke ngoko, sikhuthaza abasebenzisi ukuba bafune iingcebiso kwiingcali eziqhelene neempawu ezilungileyo nezingalunganga zezinto ezahlukeneyo kwaye ezinokulinganisa omnye nomnye.