Okanye i-pvc: Khetha izinto ezibonakalayo ezifanelekileyo

Xa ujonga ezona ntambo zintle kunye neengcingo, ukukhetha izinto zokucamagushelwa kwelungelo kubalulekile. I-sheath yangaphandle inemisebenzi eyahlukeneyo yokuqinisekisa ukuqina, ukhuseleko kunye nokusebenza kwentambo okanye ucingo. Ayiqhelekanga ukuba ithathe isigqibo phakathi kwePolyurethane (Pur) kwayeI-Polyvinyl Chloride (PVC). Kweli nqaku, uyakufunda malunga nolwalamano lwentsebenzo phakathi kwezinto ezimbini kunye nezicelo ezilungele zonke izinto ezilunge kakhulu.

Ulwakhiwo lwe-shecang kunye nomsebenzi kwiintambo kunye neengcingo

I-sheath (ikwabizwa ngokuba yi-heath engaphandle okanye i-sheath) ngumaleko ongaphambili wentambo okanye ucingo kwaye isetyenziswa kusetyenziswa iindlela ezininzi zokuphumelela. I-Sheath ikhusela abagaqeshi kunye nezinye izinto ezenziwayo kwizakhiwo ezivela kwizinto zangaphandle ezifana nobushushu, ezibandayo, ezimanzi okanye zemichiza. Ikwanokulungisa ubume kunye nendlela yomqhubi oqengqelekayo, kunye nomaleko okufihlakeleyo (ukuba ukhoyo), ukunciphisa ukuphazamiseka kwe-electromagnetic ngokuhambelana (EMC). Oku kubalulekile ukuqinisekisa ugqithiso olungaguqukiyo lwamandla, uphawu, okanye idatha ngaphakathi kwentambo okanye ucingo. Ukucamngca kudlala indima ebalulekileyo ekuqiniseni yeentambo kunye neengcingo.

Ukukhetha izixhobo zokucamagushela ekunene kubalulekile ekumiseleni eyonakali yesicelo ngasinye. Ke ngoko, kubalulekile ukwazi ngokuthe ngqo ukuba intambo okanye ucingo kufuneka lukhonze kwaye lufune ntoni.

Ezona zinto ziqhelekileyo zokuzalwa

I-Polyurethane (Pure) kunye ne-Polyvinyl Chloride (PVC) zezona zixhobo zisetyenziswa zininzi ze-sheangs zezona zentambo kunye neentambo. Imbonakalo, akukho mahluko phakathi kwezi zinto, kodwa zibonisa iipropathi ezahlukeneyo ezibenza bafaneleke kwizicelo ezahlukeneyo. Ukongeza, ezinye izinto ezininzi zinokusetyenziswa njengezixhobo zokuhluka, kubandakanya irabha yerabha, i-thermoplastic i-elastomers (TPE), kunye neendlela ezikhethekileyo zeplastiki. Nangona kunjalo, kuba baxhaphake kakhulu kune-Pur kunye ne-PVC, siya kuthelekisa ezi zimbini kwixesha elizayo.

I-Pur-Elona nqaku libalulekileyo

I-Polyurrethane (okanye i-Pur) ibhekisa kwiqela leplastiki elaphuhliswa ngasekupheleni kweminyaka yee-1930. Iveliswa yinkqubo yekhemikhali ebizwa ngokuba yi-Polymerization. Izinto eziluhlaza zihlala zihlala i-petroleum, kodwa izinto zokutyala ezinje ngeetapile, i-Corn okanye iitayile zeswekile nazo zinokusetyenziswa kwimveliso yayo. I-Polyurethane yi-Elastomestik. Oku kuthetha ukuba bayaguquguquka xa besashushu, kodwa banokubuyela kwimilo yabo yoqobo xa besashushu.

I-Polyurethane inezixhobo ezilungileyo zoomatshini. Isixhobo sinxibe ngokuchasene nokuchasana, ukuxhathisa ukuxhathisa, kwaye sibe siguquguquka kakhulu nakubushushu obuphantsi. Oku kwenza ukuba phulisele ngokufanelekileyo kwizicelo ezifuna ukuntywisa ngokushukumisa kunye nokugoba, njengokuthintela imixokelelwane. Kwizicelo zerobhothi, iintambo ezinobutlungu bopu zingakwazi ukumelana nezigidi zemijikelezo okanye imikhosi eqinileyo yamanyala ngaphandle kweengxaki. I-pur ikwanokumelana okuqinileyo kwioyile, izinyibilikisi kunye ne-ultraviolet radiation. Ukongeza, kuxhomekeke ekwenzeni umbandela, yi-halogn-free kwaye ilangazelelo, eyikhrayitheriya ebalulekileyo yeentambo eziqinisekisiweyo kwaye isetyenziswe eUnited States. Iintambo ze-Pub zihlala zisetyenziswa kumatshini kunye nokukhiwa komzi-mveliso, ezenzekelayo zemveliso, kunye nomzi mveliso weemoto.

I-PVC-yeyona nto ibalulekileyo

I-Polyvinyl Chloride (PVC) yiplastiki esetyenzisiweyo ukwenza iimveliso ezahlukeneyo ukusukela nge-1920s. Yimveliso ye-chain yegesi ye-vinyl chloride. Ngokwahlukileyo kwi-Elastomer Pure, i-PVC yiPolymoplastic Polymer. Ukuba izinto ezibonakalayo ziqwalaselwe phantsi kokufudumeza, ayinakubuyiselwa kwimeko yayo yoqobo.

Njengamafutha athandanayo, i-polyvinyl chlorida ibonelela ngeendlela ezinokubakho kuba iyakwazi ukuziqhelanisa neemfuno ezahlukeneyo ngokutshintsha umyinge wayo. Umthamo wayo wokuwonga ungekho mgangathweni pur, kodwa i-PVC ikwangunontlalontle ngakumbi; Ixabiso eliphakathi le-polyurethane liphindwe kane. Ukongeza, i-PVC ayisebenzi kwaye ixhathise amanzi, i-acid kunye nearhente zokucoca. Kungenxa yesi sizathu ukuba idla ngokusetyenziswa kumzi-mveliso wokutya okanye kwimimandla emdaka. Nangona kunjalo, i-PVC ayisiyo i-halogn-ayinamsebenzi, yiyo loo nto ithathwa njengengafanelekanga kwizicelo ezithile zangaphakathi zangaphakathi. Ukongeza, ayichaphazeli ioyile ye-oyile, kodwa le propati inokufezekiswa ziikopi ezithile zekhemikhali.

Ukuqukumbela

Zombini i-polyurethane kunye ne-polyvinyl chlorides zinezibonelelo zazo kwaye zingenakuvumelekile njengentambo kunye ne-wihel yokwaluphala. Akukho mpendulo ichazayo ukuba zeziphi izinto ezingcono kwisicelo ngasinye; Kuninzi kuxhomekeke kwimfuno nganye yesicelo. Ngamanye amaxesha, izinto ezahlukeneyo zokuzalwa zisenokuba sisisombululo esifanelekileyo. Ke ngoko, sikhuthaza abasebenzisi ukuba bafune iingcebiso kwiingcali eziqhelene neepropathi ezifanelekileyo nezingalunganga zezinto ezahlukeneyo kwaye zinokufumana ubunzima.