Oligomers ƙwayoyin halitta ne waɗanda suka ƙunshi raka'a kaɗan masu maimaitawa, kuma su ne manyan abubuwan da ke cikin tawada mai warkewa ta UV. Tawada mai warkewa ta UV tawadar ce da za a iya busarwa da kuma warkewa nan take ta hanyar fallasa ga hasken ultraviolet (UV), wanda hakan ya sa suka dace da tsarin bugawa da rufewa mai sauri. Oligomers suna taka muhimmiyar rawa wajen tantance halaye da aikin tawadar mai warkewa ta UV, kamar ɗanko, mannewa, sassauci, dorewa, da launi.
Akwai manyan nau'ikan oligomers guda uku da za a iya warkar da su ta UV, wato epoxy acrylates, polyester acrylates, da urethane acrylates. Kowane aji yana da halaye da aikace-aikacensa, ya danganta da nau'in substrate, hanyar warkarwa, da kuma ingancin da ake so na samfurin ƙarshe.
Epoxy acrylates sune oligomers waɗanda ke da ƙungiyoyin epoxy a cikin kashin bayansu, da ƙungiyoyin acrylate a ƙarshensu. An san su da yawan amsawarsu, ƙarancin danko, da kuma kyakkyawan juriya ga sinadarai. Duk da haka, suna da wasu matsaloli, kamar rashin sassauci, ƙarancin mannewa, da kuma yanayin rawaya. Epoxy acrylates sun dace da bugawa akan abubuwa masu tauri, kamar ƙarfe, gilashi, da filastik, da kuma don aikace-aikacen da ke buƙatar babban sheki da tauri.
Polyester acrylates sune oligomers waɗanda ke da ƙungiyoyin polyester a cikin kashin bayansu, da kuma ƙungiyoyin acrylate a ƙarshensu. An san su da matsakaicin amsawarsu, ƙarancin raguwa, da kuma kyakkyawan sassauci. Duk da haka, suna da wasu matsaloli, kamar yawan danko, ƙarancin juriya ga sinadarai, da kuma fitar da wari. Polyester acrylates sun dace da bugawa akan ƙananan abubuwa masu sassauƙa, kamar takarda, fim, da yadi, da kuma aikace-aikacen da ke buƙatar kyakkyawan mannewa da laushi.
Urethane acrylates sune oligomers waɗanda ke da ƙungiyoyin urethane a cikin kashin bayansu, da ƙungiyoyin acrylate a ƙarshensu. An san su da ƙarancin amsawa, babban danko, da kuma sassauci mai kyau. Duk da haka, suna da wasu matsaloli, kamar tsada mai yawa, yawan hana iskar oxygen, da ƙarancin saurin warkewa. Urethane acrylates sun dace da bugawa akan nau'ikan substrates daban-daban, kamar itace, fata, da roba, da kuma don aikace-aikace waɗanda ke buƙatar ƙarfi da juriya ga gogewa.
A ƙarshe, oligomers suna da mahimmanci don ƙirƙirar da aiwatar da tawada masu warkarwa ta UV, kuma ana iya rarraba su zuwa manyan azuzuwa uku, wato epoxy acrylates, polyester acrylates, da urethane acrylates. Kowane azuzuwa yana da nasa fa'idodi da rashin amfani, ya danganta da aikace-aikacen da substrate. Ci gaban oligomers da tawada ta UV tsari ne mai gudana, kuma ana binciken sabbin nau'ikan oligomers da hanyoyin warkarwa don biyan buƙatun masana'antar tawada.
Lokacin Saƙo: Janairu-04-2024
