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PVC umnyango umkhusane iminyaka emibini hayi yellowing umgaqo

Umkhusane womnyango usetyenziswa yintsapho nganye, ngakumbi ehlotyeni eshushu, iingcongconi zininzi, ukukhanya kunamandla kakhulu, ngoko ke kumnyango wasehlotyeni ukuthengiswa kwamakhethini kuthe tye, umgangatho wemveliso sisiqinisekiso esibalulekileyo.Kukho iintlobo ezininzi zeendlela zekhethini zomnyango.Ehlotyeni, sikholisa ukubona ikhethini yomnyango othambileyo wePVC.PVC umkhusane 微信图片_202203151152073nanini, umkhusane obala ucango unengxaki eqhelekileyo ngokwentelekiso, oko kukuthi, kulula ukuba tyheli, ukuguga ngokukhawuleza, kwaye kuchaphazela ngokunzulu inkangeleko yeemveliso, kubonakala olu hlobo isenzeko unokuvumela intloko ebuhlungu umsebenzisi, ngakumbi vumela ucango oluthambileyo umenzi umkhusane engenakuzinceda.Abavelisi abaninzi baye bafuna umncedisi wokutshintsha le ngxaki, bazama kakhulu, abanye emva kokusetyenziswa nangona bephuculwe, kodwa umphumo awufanelekanga.

Isizathu soku kukuba umkhusane wePVC utyheli, Ikakhulu ngenxa yokuba umkhusane womnyango ungaphandle, ilanga linokukhanya ngokuthe ngqo, ngokubanzi iinyanga ezintathu okanye oko kuya kuvela into etyheli, umthubi omde unzima ngakumbi.Le nto ibangelwa ikakhulu kwimitha ye-ultraviolet elangeni, eyatshabalalisa isakhiwo se-molecular ye-PVC ikhethini, ukuze i-chlorine yepolar equlethwe kwisakhiwo se-PVC ekukhanyeni kwexesha elide kunye ne-oxidation iya kukhawulezisa ukubola kwe-yellowing efana ne-PS kunye ne-PU.Oku kunokuncitshiswa ngokongeza inani elincinci le-antioxidants kunye nezizinzi zokukhanya ngexesha lesigaba sokuxuba.Izongezo eziqhelekileyo ze-Antioxidants 1010 kunye ne-UV-531 zezona zixhaphakileyo zokudibanisa ukuguga kwiimveliso ze-PVC.Nceda bhekisa ku.

Nangona kunjalo, iimveliso zekhethini zePVC ezicacileyo zihlala zixhathisa ngakumbi kwimitha ye-ultraviolet kuneemfuno ze-antioxidant, kucetyiswa ukuba iintlobo ezahlukeneyo zokukhanya ezisetyenziselwa ukulungelelanisa zingcono.Uninzi lwezixhobo zokufunxa ze-UV kwimarike ziyi-monomer, kwaye azikwazi ukudlala isiphumo esichasene nokutyheli.Kufuneka ukhethe ukufunxa i-Absorbent ye-UV ekwincopho eninzi, inokucaca ngakumbi ukufezekisa isiphumo sexesha elide esingamthubi.Okwangoku, imarike iqhele ukusebenzisa uhlobo olufanelekileyo lomdlalo we-UV absorber X-2, ukuhlangabezana neemfuno zabathengi.Ukukhetha i-anti-oksijeni enjalo, i-anti-ultraviolet, ukuzinza kokukhanya kwe-absorbent ye-UV yomdlalo, inokukhupha ngokwenene iimveliso zetrafikhi zeplastiki.


Ixesha lokuposa: Mar-15-2022