Irabha ye-Nitrile butadiene (NBR) kanye ne-polyvinyl chloride (PVC) yizinto ezimbili ezisetshenziswa kabanzi embonini yokushisa, ikakhulukazi ekusetshenzisweni kukagesi nokushisa. Izakhiwo zazo ezihlukile zizenza zifanelekele izindawo ezahlukahlukene, kodwa ukusebenza kwalezi zinto zokushisa kungahluka kakhulu kuye ngenqubo yokukhiqiza. Ukuqonda umthelela wezindlela ezahlukene zokukhiqiza ekusebenzeni kokushisa kwezinto ze-NBR/PVC kubalulekile kokubili kubakhiqizi nakubasebenzisi bokugcina.
Izakhiwo zokuvikela izinto ze-NBR/PVC zincike kakhulu ekuqhutshweni kwazo kokushisa, amandla e-dielectric, kanye nokubekezelela izici zemvelo ezifana nomswakama kanye nokushintshashintsha kwezinga lokushisa. Lezi zakhiwo zithintwa ukwakheka kwezinto, izithasiselo, kanye nezinqubo ezithile ezisetshenziswa ekukhiqizeni.
Enye yezinqubo ezibalulekile zokukhiqiza ezithinta ukusebenza kokushisa yindlela yokuhlanganisa. Kulesi sigaba, ama-polymer ayisisekelo (irabha ye-nitrile kanye ne-polyvinyl chloride) axutshwa nezithasiselo ezahlukahlukene, kufaka phakathi ama-plasticizer, ama-stabilizer, kanye nama-filler. Ukukhetha izithasiselo kanye nokuhlushwa kwazo kushintsha kakhulu izakhiwo zokushisa kanye nogesi zomkhiqizo wokugcina. Isibonelo, ukwengeza ama-plasticizer athile kungathuthukisa ukuguquguquka futhi kunciphise ukuqhuba kokushisa, kuyilapho ama-filler athile angathuthukisa amandla omshini kanye nokuzinza kokushisa.
Enye inqubo ebalulekile yokukhiqiza yindlela yokukhipha noma yokubumba esetshenziselwa ukwakha izinto zokuvikela. Ukukhipha kuhilela ukucindezela ingxube yezinto ngokusebenzisa idayisi ukuze kwakheke isimo esiqhubekayo, kuyilapho ukubumba kuhilela ukuthulula izinto emgodini owakhiwe ngaphambilini. Indlela ngayinye ibangela umehluko ekubuneni, ukufana, kanye nesakhiwo sonke sezinto zokuvikela. Isibonelo, izinto zokuvikela ze-NBR/PVC ezikhishwe zingase zibe nokufana okungcono kanye nokuvuleka okuphansi uma kuqhathaniswa nemikhiqizo ebunjiwe, ngaleyo ndlela kuthuthukiswe ukusebenza kwazo kokuvikela.
Inqubo yokwelapha idlala indima ebalulekile ezimpahleni zokuvimbela ukuguga kwezinto ze-nitrile rubber/polyvinyl chloride (NBR/PVC). Ukwelapha, okwaziwa nangokuthi i-vulcanization, kubhekisela enkambisweni yokuxhumanisa amaketanga e-polymer ngokusebenzisa ukushisa nokucindezela, okuholela ekutheni izinto zibe zizinzile futhi ziqine kakhudlwana. Ubude kanye nokushisa kwenqubo yokwelapha kuthinta izakhiwo zokugcina zezinto zokuvimbela ukuguga. Ukwelapha okunganele kuholela ekuhlanganiseni okungaphelele, ngaleyo ndlela kunciphisa ukumelana nokushisa kanye namandla e-dielectric. Ngokuphambene nalokho, ukwelapha ngokweqile kubangela ukuthi izinto zibe buthakathaka futhi ziqhekeke, ngaleyo ndlela kunciphisa ukusebenza kahle kokuvikela ukuguga.
Ngaphezu kwalokho, izinga lokupholisa ngemva kokukhiqizwa lithinta ubukristalu kanye nokwakheka kwezinto ze-NBR/PVC. Ukupholisa okusheshayo kungaholela ekwandeni kwezakhiwo ezi-amorphous, okungathuthukisa ukuguquguquka kodwa kunganciphisa ukuzinza kokushisa. Ngakolunye uhlangothi, izinga lokupholisa elihamba kancane lingakhuthaza ukwakheka kwekristalu, okungathuthukisa ukumelana nokushisa kodwa kunciphise ukuguquguquka.
Ngamafuphi, izici zokuvikela ukushisa zezinto ze-NBR/PVC zithinteka kakhulu yizinqubo ezahlukahlukene zokukhiqiza. Kusukela ekuhlanganiseni nasekubumbeni kuya ekupholiseni nasekupholiseni, isinyathelo ngasinye enkambisweni yokukhiqiza sishintsha izakhiwo zokushisa nezogesi zomkhiqizo wokugcina. Abakhiqizi kumele bacabangele ngokucophelela lezi zici ukuze bathuthukise ukusebenza kokuvikela ukushisa kwezinto ze-NBR/PVC ezisetshenziswayo ezithile. Njengoba kuqhubeka ukukhula kwesidingo sezinto zokuvikela ukushisa ezisebenza kahle kakhulu, ucwaningo oluqhubekayo kanye nokuthuthukiswa kobuchwepheshe bokukhiqiza kubalulekile ekuthuthukiseni ukusebenza kwezixazululo zokuvikela ukushisa ze-NBR/PVC ezindaweni ezahlukene.
Isikhathi sokuthunyelwe: Novemba-11-2025
