Maganin UV shine maganin ultraviolet, UV shine taƙaitaccen ra'ayi na ultraviolet UV haskoki ultraviolet, curing yana nufin tsarin canza abubuwa daga ƙananan ƙwayoyin cuta zuwa polymers.Maganin UV gabaɗaya yana nufin yanayin warkewa ko buƙatun sutura (paints), tawada, adhesives (manne) ko sauran tukunyar tukunyar da ake buƙatar warkewa da hasken ultraviolet, wanda ya bambanta da warkewar dumama, warkar da adhesives (maganin warkarwa), warkewar dabi'a, da sauransu.
A fagen polymers, ana amfani da UV azaman taƙaitaccen maganin radiation, UV, wato, UV ultraviolet curing, shine amfani da UV ultraviolet haske matsakaici da gajeren kalaman (300-800 nm) ƙarƙashin UV radiation, ruwa UV. kayan a cikin photoinitiator kara kuzari a cikin free radicals ko cations, game da shi jawo da polymer abu (gudu) dauke da aiki kungiyoyin polymerization a cikin wani insoluble kuma ba narke m shafi film, shi ne wani sabon fasaha na kare muhalli da kuma low VOC watsi da ke fitowa a cikin 60s. na karni na 20.Bayan shekaru 80 na karni na 20, kasar Sin ta samu ci gaba cikin sauri.
A oligomers suna da babban danko, kuma don sauƙaƙe gini da inganta saurin warkewa na crosslinking, ya zama dole don ƙara monomers azaman diluents mai amsawa don daidaita rheology na guduro.Tsarin diluent mai amsawa yana da tasiri mai mahimmanci akan kaddarorin fim ɗin rufewa na ƙarshe kamar gudanawa, zamewa, wettability, kumburi, shrinkage, mannewa da ƙaura a cikin fim ɗin shafi.Abubuwan diluent masu amsawa na iya zama monofunctional ko multifunctional, na ƙarshen ya fi kyau saboda yana inganta haɗin gwiwa a magani.Abubuwan da ake buƙata don diluent mai amsawa sune, ikon dilution, solubility, wari, ikon rage danko na matsakaici, rashin ƙarfi, aiki, tashin hankali na ƙasa, raguwa yayin polymerization, zafin canjin gilashin (Tg) na homopolymer, tasiri akan gabaɗaya. warkar da sauri da guba.Ya kamata monomer da aka yi amfani da shi ya zama monomer wanda ke damun fata kuma wanda ƙimarsa bai wuce 3 ba kamar yadda Draize ya ƙaddara.Wani nau'in monomer na yau da kullun da ake amfani da shi azaman diluent mai amsawa shine trippropylene glycol diacrylate (TPGDA).
Aikace-aikacen juyar da polymerization mai sauri a cikin tsarin sinadarai na warkarwa na UV ana samun su ta hanyar samar da halayen radical kyauta a ƙarƙashin initiators masu dacewa da / ko masu ɗaukar hoto da ingantaccen yanayin haske.Ana iya amfani da masu ɗaukar hoto waɗanda ke haifar da radicals kyauta da tsaka-tsakin cationic.Duk da haka, a cikin masana'antu na yau, na farko sau da yawa yana da launin launi (wato, photoinitiator wanda zai iya samar da free radicals).
A halin yanzu, mafi yawan amfani da ultraviolet raƙuman raƙuman ruwa shine 365nm, 253.7nm, 185nm, da dai sauransu. Siffofin sun haɗa da bushewa nan da nan, ƙananan farashin aiki, ingantacciyar inganci, rage sararin ajiya, tsabta da inganci.Ƙarfin fitilar da ake amfani da shi ya fi 1000W, ta amfani da ultraviolet UVA UVC, da dai sauransu, wanda UVC ke amfani da fitilun amalgam.
Lokacin aikawa: Oktoba-19-2022