I-PC (i-polycarbonate) amaphepha aphantsi kokuguga ngenxa yemitha ye-ultraviolet, ngoko ke abavelisi bephepha le-PC baye bamkela iindlela ezahlukeneyo zokusombulula le ngxaki ukwenzela ukwandisa ubomi benkonzo yephepha.Okwangoku, eyona ndlela isebenzayo kunye nesebenzayo kukongeza i-absorber ultraviolet (efinyeziweyo njengezinto ze-UV) kwimveliso.Ngokweenkqubo ezahlukeneyo zokuvelisa, kukho iindlela ezintathu zokongeza izinto ze-UV: indlela yokudibanisa edibeneyo, indlela yokugqoka kunye ne-co-extrusion method.
1.Indlela yokudibanisa edibeneyo
Umlinganiselo othile wezinto ze-UV (malunga ne-5%) zixutywe kwizinto eziphathekayo ze-PC, kwaye zinyibilike kwaye zikhutshwe kwiqondo lokushisa eliphezulu.Nangona kunjalo, uninzi lwamacwecwe acutshungulwa yile ndlela lusabonakala elangeni, ngoko ke ukuguga komphezulu weplate kusengaphepheki.
2.Indlela yokwambathisa
Gcoba umaleko wezinto ze-UV kumphezulu webhodi.Nangona kunjalo, ngenxa yokungahambelani kakubi kwePC kunye nezinye izinto, amanzi emvula angakwazi ukuhlamba lula i-coating phezu kwebhodi emva kokufakwa.Ukongezelela, ngokuqwalasela ukuba ibhodi inokonakala ngexesha lokugcinwa kunye nokuthutha, omabini amacala ebhodi ahlanganiswe nefilimu ekhuselayo ngexesha lokuvelisa.Ifilimu ekhuselayo kufuneka ikhutshwe emva kokufakwa, kwaye ngenxa yokuba ifilimu ekhuselayo inamathele, ubuninzi bezinto ze-UV ezigqunywe phezu komhlaba ziya kubambelela ngexesha lokukrazula, ngoko ke umphumo wokwenene ubi kakhulu.
3.I-Coextrusion
Okwangoku, eyona ndlela iphambili kwihlabathi yindlela ye-co-extrusion.Ngale ndlela, izinto eziphambili zePC kunye nezixhobo ze-UV ziyanyibilika kwaye zigqithiswe kwiqondo lobushushu eliphezulu kwi-extruder, idityaniswe kwi-mold, kwaye emva koko ikhutshwe ngembaleki ekubumbeni ukwenza umaleko oshinyeneyo okhuselayo kumphezulu wePC.Nangona kunjalo, utshintsho kwiqondo lokushisa, isantya, uxinzelelo, njl. kwimveliso yokwenene usebenzisa le ndlela kuya kuchaphazela ukuhanjiswa kwezinto ze-UV kumphezulu wephepha, okwenza ubukhulu bungalingani kububanzi bephepha.
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Umntu woqhagamshelo:Umphathi weNtengiso
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Ixesha lokuposa: Dec-10-2021