Kukonzekera kwa mamasukidwe otsika komanso kusinthasintha kwakukulu kwa epoxy acrylate ndikugwiritsa ntchito kwake mu zokutira zochiritsika ndi UV

Ofufuza adapeza kuti kusinthidwa kwa epoxy acrylate (EA) ndi carboxyl-terminated intermediate kumawonjezera kusinthasintha kwa filimuyo ndikuchepetsa kukhuthala kwa utomoni. Kafukufukuyu akutsimikiziranso kuti zopangira zomwe zimagwiritsidwa ntchito ndizotsika mtengo komanso zimapezeka mosavuta.

Epoxy acrylate (EA) ndiyo oligomer yomwe imagwiritsidwa ntchito kwambiri ndi UV chifukwa chanthawi yake yayifupi yochiritsa, kulimba kwa zokutira, makina abwino kwambiri, komanso kukhazikika kwamafuta. Kuti athane ndi zovuta za brittleness, kusasinthika bwino, komanso kukhuthala kwakukulu kwa EA, oligomer ya UV-curable epoxy acrylate yokhala ndi mamasukidwe otsika komanso kusinthasintha kwakukulu idakonzedwa ndikuyika pa zokutira zochiritsira za UV. Carboxyl inathetsedwa wapakatikati wopezedwa ndi momwe anhydride ndi diol idagwiritsidwira ntchito kusintha EA kuti isinthe kusinthasintha kwa filimu yochiritsidwa, ndipo kusinthasintha kunasinthidwa kupyolera muutali wa carbon chain of diols.

Chifukwa cha mawonekedwe ake apamwamba, ma epoxy resins amagwiritsidwa ntchito kwambiri pamakampani opanga zokutira kuposa pafupifupi gulu lina lililonse la zomangira. M'buku lawo latsopano lofotokozera "Epoxy Resins", olemba Dornbusch, Christ ndi Rasing akufotokoza zofunikira za chemistry ya gulu la epoxy ndikugwiritsa ntchito mapangidwe enieni kuti afotokoze ntchito ya epoxy ndi phenoxy resins mu zokutira mafakitale - kuphatikizapo kuteteza dzimbiri, zokutira pansi, zokutira ufa ndi zophimba zamkati zamkati.

Kukhuthala kwa utomoni kunachepetsedwa posintha pang'ono E51 ndi binary glycidyl ether. Poyerekeza ndi EA yosasinthika, kukhuthala kwa utomoni wokonzedwa mu phunziroli kumachepa kuchokera ku 29800 mpaka 13920 mPa s (25 ° C), ndipo kusinthasintha kwa filimu yochiritsidwa kumawonjezeka kuchokera ku 12 mpaka 1 mm. Poyerekeza ndi malonda a EA osinthidwa, zopangira zomwe zimagwiritsidwa ntchito mu phunziroli ndizotsika mtengo komanso zosavuta kuzipeza ndi kutentha kwapansi pansi pa 130 ° C, pogwiritsa ntchito njira yosavuta yophatikizira, ndipo palibe zosungunulira zamoyo.

Nkhaniyi idasindikizidwa mu Journal of Coatings Technology and Research, Volume 21, mu Novembala 2023.