Iziqinisi zobushushu zePVCzidlala indima ebalulekileyo ekuqinisekiseni ukusebenza kunye nokuqina kwemibhobho yePVC. Ezi ziqinisi zizinto ezongeziweyo ezisetyenziselwa ukukhusela izinto zePVC ekuwohlokeni okubangelwa kukuvezwa kubushushu, ukukhanya kunye neoksijini. Kweli nqaku, siza kuhlola ukusetyenziswa kweziqinisi zobushushu zePVC kwimibhobho yePVC kunye nokubaluleka kwazo ekugcineni umgangatho wemibhobho.
I-PVC, okanye i-polyvinyl chloride, sisixhobo esisetyenziswa ngeendlela ezahlukeneyo kwishishini lokwakha kwiintlobo ngeentlobo zezicelo, kubandakanya imibhobho, izixhobo kunye neepayipi. Imibhobho ye-PVC isetyenziswa kakhulu ekunikezelweni kwamanzi, ekutsaleni amanzi, ekunkcenkcesheleni nasekunyangweni kwenkunkuma ngenxa yokuqina kwayo, ukumelana nokugqwala, kunye nokulula kokufakwa kwayo. Nangona kunjalo, izinto ze-PVC zihlala ziwohloka xa zichatshazelwa bubushushu nokukhanya, nto leyo ebangela ukulahleka kwamandla oomatshini kunye nokutshintsha kombala.
Ukuze koyiswe lo mceli mngeni, iziqinisi zobushushu zePVC zisetyenziselwa ukukhusela izinto zePVC ekuwohlokeni kobushushu ngexesha lokucubungula kunye nobomi benkonzo yeepayipi zePVC. Injongo yezi ziqinisi kukuthintela ukusabela kokonakala okwenzeka xa iPVC ivezwa kubushushu nasekukhanyeni, ngaloo ndlela yandisa ubomi benkonzo yombhobho kwaye igcine iimpawu zayo zoomatshini.
Kukho iintlobo ezininzi zeziqinisi zobushushu zePVC ezisetyenziselwa imibhobho yePVC, kuquka iziqinisi ezisekelwe kwi-lead, iziqinisi ezisekelwe kwi-tin, iziqinisi ezisekelwe kwi-calcium kunye neziqinisi ezisekelwe kwi-organic. Uhlobo ngalunye lwesiqinisi luneempawu zalo ezizodwa kunye neenzuzo, kwaye ukukhetha isiqinisi esifanelekileyo kuxhomekeke kwiimfuno ezithile zesicelo sakho semibhobho yePVC.
Izinzisi ezisekelwe kwi-lead, ezifana ne-lead stearate kunye ne-lead trivalent sulfate, bezisetyenziswa kakhulu kwixesha elidlulileyo ngenxa yokuzinza kwazo okuhle kakhulu kubushushu kunye nokusebenza kakuhle kweendleko. Nangona kunjalo, ngenxa yenkxalabo yokusingqongileyo kunye nempilo, amazwe amaninzi aye aphelisa ukusetyenziswa kwezithambisi ezisekelwe kwi-lead aze athathe indawo yazo ngezithambisi ezizezinye.
Iziqinisi ezisekelwe kwi-tin, ezifana ne-dibutyltin dilaurate kunye ne-tributyltin oxide, zaziwa ngokuzinza kwazo okuphezulu kobushushu kunye nokucaca, nto leyo ezenza zifaneleke ukusetyenziswa apho ukugcinwa kombala kubalulekile. Ezi ziqinisi zikwakhusela ngokufanelekileyo umbhobho we-PVC ekuwohlokeni ngexesha lokucubungula kunye nokuvezwa ngaphandle.
Izinto ezizinzisa i-calcium, ezifana ne-calcium stearate kunyeizinto eziqinisa i-calcium zinc, zizinto ezingasetyenziswayo endaweni yeziqinisi ezisekelwe kwilothe kwaye zisetyenziswa kakhulu ekuveliseni imibhobho yePVC yamanzi okusela kunye nokupakishwa kokutya. Ezi ziqinisi zizinzile kakuhle kubushushu kwaye zinokumelana nemozulu, nto leyo ezenza zifaneleke ukusetyenziswa ngaphandle.
Iziqinisi zendalo, ezifana neoyile yesoya e-epoxidized kunye ne-methyltin mercaptide, zivela kwimithombo yendalo kwaye zithandwa ngenxa yeempawu zazo ezinobuhlobo nokusingqongileyo kunye nezingatyhefekiyo. Ezi ziqinisi zikhusela ngokufanelekileyo imibhobho yePVC ekuwohlokeni kobushushu kwaye zifanelekile ukusetyenziswa ngemigaqo engqongqo yokusingqongileyo.
Ngexesha lenkqubo yokwenziwa kwemibhobho yePVC, iziqinisi zobushushu zePVC zongezwa kwi-resin yePVC ngexesha lenkqubo yokudibanisa ukuze zenze umxube ofanayo. Iziqinisi zithintela ngempumelelo iintshukumo zokuwohloka okubangelwa bubushushu nokukhanya ngokwenza ii-complexes ezinee-PVC polymer chains. Oku kuqinisekisa ukuba umbhobho wePVC ugcina amandla awo oomatshini, uzinzo lombala kunye nokuthembeka kobukhulu kuyo yonke imisebenzi yawo.
Ngexesha lokusebenza kwemibhobho ye-PVC, ukuchatshazelwa zizinto zangaphandle ezifana nokukhanya kwelanga, ukuguquguquka kobushushu, iikhemikhali, njl.njl. kuya kukhawulezisa ukonakala kwezinto ze-PVC. Iziqinisi zobushushu ze-PVC zidlala indima ebalulekileyo ekukhuseleni imibhobho kwezi zinto zonakalisayo, ziqinisekisa ukusebenza kwayo ixesha elide kunye nokuthembeka.
Ukusetyenziswa kwezithambisi zobushushu zePVC kubalulekile ekugcineni umgangatho kunye nokusebenza kakuhle kwemibhobho yePVC. Ezi zithambisi zikhusela izinto zePVC ekuwohlokeni kobushushu kwaye ziqinisekisa ukuba umbhobho ugcina iimpawu zawo zoomatshini, uzinzo lombala kunye nokuthembeka kobukhulu. Njengoko iteknoloji yezithambisi ihambela phambili, ngoku kukho iindlela ezahlukeneyo zokuhlangabezana neemfuno ezithile zezicelo ezahlukeneyo zemibhobho yePVC. Njengoko imfuno yemibhobho yePVC esemgangathweni ophezulu nehlala ixesha elide iqhubeka ikhula, ukubaluleka kwezithambisi zobushushu zePVC kushishino lwemibhobho yePVC akunakugxininiswa kakhulu.
Ixesha lokuposa: Jan-10-2024