I kitea e ngā kairangahau mā te whakarerekētanga o te epoxy acrylate (EA) me te takawaenga carboxyl-terminated ka nui ake te ngāwari o te kiriata, ka whakaiti hoki i te matotoru o te kapia. E whakaatu ana hoki te rangahau he iti te utu o ngā rauemi mata e whakamahia ana, ā, he ngāwari hoki te tiki.
Ko te epoxy acrylate (EA) te oligomer UV-curable e whakamahia whānuitia ana i tēnei wā nā te poto o te wā whakamaroke, te pakeke o te paninga, te āhuatanga miihini pai rawa atu, me te pumau o te wera. Hei whakatika i ngā raruraru o te pakarukaru nui, te ngoikore o te ngāwari, me te matotoru nui o te EA, i whakaritea te oligomer epoxy acrylate UV-curable me te matotoru iti me te ngāwari nui, ā, i whakamahia ki ngā paninga UV-curable. Ko te takawaenga carboxyl i whiwhihia mā te tauhohenga o te anhydride me te diol i whakamahia hei whakarerekē i te EA hei whakapai ake i te ngāwari o te kiriata kua whakamarokehia, ā, i whakatikatikaina te ngāwari mā te roa o te mekameka waro o ngā diol.
Nā ō rātou āhuatanga tino pai, he whānui ake te whakamahinga o ngā kapia epoxy i roto i te umanga paninga i te nuinga o ngā momo here katoa. I roto i tā rātou pukapuka tohutoro hou "Epoxy Resins", ka whakamārama ngā kaituhi a Dornbusch, Christ me Rasing i ngā kaupapa matua o te matū o te rōpū epoxy, ā, ka whakamahi i ngā whakatakotoranga motuhake hei whakamārama i te whakamahinga o ngā kapia epoxy me te phenoxy i roto i ngā paninga ahumahi - tae atu ki te tiaki waikura, ngā paninga papa, ngā paninga paura me ngā paninga kēne o roto.
I whakaitihia te matotoru o te kapia mā te whakakapi i te E51 ki te rua glycidyl ether. Ki te whakatauritea ki te EA kāore i whakarerekētia, ka heke te matotoru o te kapia i whakaritea i roto i tēnei rangahau mai i te 29800 ki te 13920 mPa s (25°C), ā, ka piki ake te ngāwari o te kiriata kua whakamaroketia mai i te 12 ki te 1 mm. Ki te whakatauritea ki te EA whakarerekētia e wātea ana i te hokohoko, he iti te utu o ngā rauemi mata e whakamahia ana i roto i tēnei rangahau, ā, he ngāwari ki te tiki me te pāmahana tauhohenga i raro i te 130°C, mā te whakamahi i tētahi tukanga hanga ngāwari, me te kore he whakarewa rauropi.
Kua whakaputaina tēnei rangahau ki roto i te Journal of Coatings Technology and Research, Volume 21, i te Whiringa-ā-rangi 2023.
Te wā tuku: 27-Pepuere-2025
