Iziqinisi zokushisa ze-PVCzidlala indima ebalulekile ekuqinisekiseni ukusebenza nokuqina kwamapayipi e-PVC. Lawa ma-stabilizer ayizithasiselo ezisetshenziselwa ukuvikela izinto ze-PVC ekuwohlokeni okubangelwa ukuchayeka ekushiseni, ekukhanyeni nasemoyeni. Kulesi sihloko, sizohlola ukusetshenziswa kwama-stabilizer okushisa e-PVC kumapayipi e-PVC kanye nokubaluleka kwawo ekugcineni ikhwalithi yamapayipi.
I-PVC, noma i-polyvinyl chloride, iyinto eguquguqukayo evame ukusetshenziswa embonini yokwakha ngezinhlelo ezahlukahlukene, okuhlanganisa amapayipi, izinto zokufaka kanye nemigudu. Amapayipi e-PVC asetshenziswa kabanzi ekuhlinzekweni kwamanzi, ekukhipheni amanzi, ekuniseleni nasekuhlanzweni kwendle ngenxa yokuqina kwawo, ukumelana nokugqwala, kanye nokulula kokufakwa. Kodwa-ke, izinto ze-PVC zivame ukonakala uma zivezwa ekushiseni nasekukhanyeni, okuholela ekulahlekelweni kwamandla okusebenza kanye nokushintsha kombala.
Ukuze kunqotshwe le nselele, iziqinisi zokushisa ze-PVC zisetshenziselwa ukuvikela izinto ze-PVC ekuwohlokeni kokushisa ngesikhathi sokucubungula nokuphila kwenkonzo yamapayipi e-PVC. Inhloso yalezi ziqinisi ukuvimbela ukusabela kokuwohloka okwenzeka lapho i-PVC ivezwa ekushiseni nasekukhanyeni, ngaleyo ndlela yandise impilo yenkonzo yepayipi futhi igcine izakhiwo zayo zemishini.
Kunezinhlobo eziningi zeziqinisi zokushisa ze-PVC ezisetshenziselwa amapayipi e-PVC, okuhlanganisa iziqinisi ezisekelwe kumthofu, iziqinisi ezisekelwe kuthini, iziqinisi ezisekelwe ku-calcium kanye neziqinisi ezisekelwe ku-organic. Uhlobo ngalunye lwesiqinisi lunezakhiwo zalo ezihlukile kanye nezinzuzo, futhi ukukhetha isiqinisi esifanele kakhulu kuncike ezidingweni ezithile zokusetshenziswa kwepayipi lakho le-PVC.
Iziqinisi ezisekelwe ku-lead, njenge-lead stearate kanye ne-lead trivalent sulfate, bezisetshenziswa kabanzi esikhathini esidlule ngenxa yokuzinza kwazo okuhle kakhulu kokushisa kanye nokusebenza kahle kwezindleko. Kodwa-ke, ngenxa yezinkinga zemvelo nezempilo, amazwe amaningi ayeke ukusebenzisa iziqinisi ezisekelwe ku-lead futhi azishintsha ngezinye iziqinisi.
Iziqinisi ezisekelwe ku-tin, njenge-dibutyltin dilaurate kanye ne-tributyltin oxide, zaziwa ngokuqina kwazo okuphezulu kokushisa kanye nokucaca, okwenza zifaneleke ukusetshenziswa lapho ukugcinwa kombala kubalulekile khona. Lezi ziqinisi zivikela ngempumelelo ipayipi le-PVC ekuwohlokeni ngesikhathi sokucubungula kanye nokuvezwa ngaphandle.
Iziqinisi ezisekelwe ku-calcium, njenge-calcium stearate kanyeiziqinisi ze-calcium zinc, ziyizindlela ezingezona ezinobuthi esikhundleni seziqinisi ezisekelwe kumthofu futhi zivame ukusetshenziswa ekukhiqizeni amapayipi e-PVC amanzi okuphuza kanye nokupakisha ukudla. Lezi ziqinisi zinokuqina okuhle kokushisa kanye nokumelana nesimo sezulu, okwenza zifaneleke ukusetshenziswa ngaphandle.
Izithambisi zemvelo, njenge-epoxidized soybean oil kanye ne-methyltin mercaptide, zitholakala emithonjeni yemvelo futhi zithandwa ngenxa yezakhiwo zazo ezinobungani nemvelo kanye nezingabuthi. Lezi zithambisi zivikela ngempumelelo amapayipi e-PVC ekuwohlokeni kokushisa futhi zifanele ukusetshenziswa ngemithetho eqinile yezemvelo.
Ngesikhathi senqubo yokukhiqiza amapayipi e-PVC, iziqinisi zokushisa ze-PVC zengezwa ku-resin ye-PVC ngesikhathi senqubo yokuhlanganisa ukuze kwakheke ingxube efanayo. Iziqinisi zivimbela ngempumelelo ukusabela kokuwohloka okubangelwa ukushisa nokukhanya ngokwenza ama-complexes ngamaketanga e-polymer e-PVC. Lokhu kuqinisekisa ukuthi ipayipi le-PVC ligcina amandla alo okusebenza, ukuzinza kombala kanye nobuqotho obunobukhulu kuyo yonke impilo yalo yokusebenza.
Ngesikhathi sokusebenza kwamapayipi e-PVC, ukuchayeka ezintweni zangaphandle njengokukhanya kwelanga, ukushintshashintsha kwezinga lokushisa, amakhemikhali, njll. kuzosheshisa ukuwohloka kwezinto ze-PVC. Iziqinisi zokushisa ze-PVC zidlala indima ebalulekile ekuvikeleni amapayipi kulezi zinto eziwohlokayo, ziqinisekisa ukusebenza kwawo kwesikhathi eside kanye nokuthembeka.
Ukusetshenziswa kweziqinisi zokushisa ze-PVC kubalulekile ekugcineni ikhwalithi nokusebenza kwamapayipi e-PVC. Lawa maqinisi avikela izinto ze-PVC ekuwohlokeni kokushisa futhi aqinisekisa ukuthi ipayipi ligcina izakhiwo zalo zemishini, ukuqina kombala kanye nobuqotho obunobukhulu. Njengoba ubuchwepheshe bokuziqinisi buthuthuka, manje kunezinketho eziningi zokuhlangabezana nezidingo ezithile zezicelo ezahlukene zamapayipi e-PVC. Njengoba isidingo samapayipi e-PVC asezingeni eliphezulu futhi ahlala isikhathi eside siqhubeka nokukhula, ukubaluleka kweziqinisi zokushisa ze-PVC embonini yamapayipi e-PVC akunakuphikiswa.
Isikhathi sokuthunyelwe: Jan-10-2024