Kua whakaatuhia e te matū UV Waterborne (WB) te tipu nui i roto i ngā mākete rakau ahumahi o roto nā te mea he pai te mahi a te hangarau, he iti ngā tukunga whakarewa me te whakapiki i te pai o te whakaputa. Ka tukuna e ngā pūnaha paninga UV ki te kaiwhakamahi whakamutunga ngā painga o te ātete matū me te rakuraku tino pai, te ātete poraka pai, te iti rawa o ngā VOC me te tapuwae taputapu iti me te iti o te wāhi rokiroki e hiahiatia ana. He āhuatanga ēnei pūnaha e pai ana te whakataurite ki ngā pūnaha urethane e rua-wāhanga me te kore he raruraru o ngā hononga whakawhiti kino me ngā āwangawanga mō te roa o te kohua. He whai hua te pūnaha whānui nā te tere whakaputa tere me te iti o ngā utu pūngao. Ka taea e ēnei painga te whai hua mō ngā tono o waho o te wheketere tae atu ki ngā anga matapihi me te tatau, te taha me ētahi atu mahi mira. Ka whakamahia e ēnei wāhanga mākete ngā emulsions acrylic me ngā polyurethane dispersions nā te mea he pai te kanapa me te pupuri tae, ā, e whakaatu ana i te roa o te mau. I roto i tēnei rangahau, kua aromatawaihia ngā kapia polyurethane-acrylic me te mahi UV i runga i ngā whakaritenga ahumahi mō ngā tono rakau ahumahi o roto me waho.
E toru ngā momo paninga whakarewa e whakamahia whānuitia ana i roto i ngā mahi rakau ahumahi. Ko te nitrocellulose lacquer he ranunga iti-totoka o te nitrocellulose me ngā hinu, ngā alkyd hinu rānei. He tere te maroke o ēnei paninga, ā, he kaha te kanapa. He maha ngā whakamahinga o ēnei paninga ki ngā taonga whare noho. He ngoikoretanga o ēnei, arā, ko te kōwhai haere i te wā, ā, ka pakarukaru. He iti hoki te ātete matū. He tino teitei ngā VOC o ngā nitrocellulose lacquer, he 500 g/L, neke atu rānei. Ko ngā nicores kua whakakōkītia he ranunga o te nitrocellulose, ngā hinu, ngā alkyd hinu rānei, ngā plasticizer me te urea-formaldehyde. Ka whakamahia e rātou he whakakōkī waikawa ngoikore pērā i te butyl acid phosphate. E whā marama te roa o te oranga o ēnei paninga. Ka whakamahia i roto i ngā taonga tari, whare wānanga me ngā whare noho. He pai ake te ātete matū o ngā nicores kua whakakōkītia i ngā nicores nitrocellulose. He tino teitei hoki ngā VOC. Ko ngā winiweri whakawhiti he ranunga o ngā alkyd hinu, te urea formaldehyde me te melamine. Ka whakamahia e rātou he whakakōkī waikawa kaha pērā i te waikawa p-toluene sulfonic. E 24 ki te 48 hāora te roa o te ora o ēnei mea ki roto i te kohua. E whakamahia ana i roto i ngā kāpata o te kīhini, i ngā taonga tari me ngā taonga noho. Ko ngā paninga whakawhiti te āhuatanga pai rawa atu o ngā momo paninga whakarewa e toru e whakamahia ana mō te rakau ahumahi. He tino teitei ngā VOC me ngā tukunga formaldehyde.
He pai rawa atu ngā whakapūkara kiriaku honohono-ā-roto me ngā whakapūkara polyurethane hei whakakapi i ngā hua whakarewa mō ngā mahi rakau ahumahi. He tino pai te ātete matū me te poraka o ngā whakapūkara kiriaku, he pakari teitei, he pakari me te ātete ki te huarere, ā, he pai ake te piri ki ngā mata kore-pūwero. He tere te maroke, e āhei ai te kaihanga kāpata, tāonga whare, hanga rānei ki te whakahaere i ngā wāhanga i muri tata mai i te whakamahinga. He tino pai te ātete ki te pakū, te ngāwari, me te ātete ki te karawarawa me te paru o ngā PUD. He hoa whakaranu pai ēnei me ngā whakapūkara kiriaku hei whakapai ake i ngā āhuatanga miihini. Ka taea e ngā whakapūkara kiriaku me ngā PUD te tauhohe ki ngā matū honohono pērā i te polyisocyanates, te polyaziridine, te carbodiimides rānei hei hanga paninga 2K me ngā āhuatanga kua whakapaitia.
Kua rongonui ngā paninga UV-whakaora wai mō ngā mahi rakau ahumahi. Ka whiriwhiria ēnei paninga e ngā kaihanga kāpata me ngā kaihanga taonga kīhini nā te mea he tino ātete me ngā āhuatanga miihini, he tino pai ngā āhuatanga tono, ā, he iti rawa ngā tukunga whakarewa. He tino ātete poraka ngā paninga UV WB i muri tonu i te whakamaroketanga, e āhei ai te whakarārangi, te tākai me te tuku tika atu i ngā wāhanga paninga mai i te raina whakaputa me te kore e roa te wā e pāngia ai te pakeketanga. He tino kaha te whanaketanga pakeketanga o te paninga UV WB, ā, ka puta i roto i ngā hēkona. He pai ake te ātete matū me te paru o ngā paninga UV WB i ērā o ngā wanihi whakawhiti whakarewa.
He maha ngā painga o ngā paninga UV WB. Ahakoa he nui te matotoru o ngā oligomer UV 100%-totoka, me te waimeha ki ngā waimeha tauhohe, he iti te matotoru o ngā PUD UV WB, ā, ka taea te whakarite i te matotoru mā te whakamahi i ngā whakarerekētanga rheology WB tuku iho. He teitei te taumaha ngota o ngā PUD UV WB i te tīmatanga, ā, kāore e nui ake te taumaha ngota i te mea ka maroke tere pērā i ngā paninga UV totoka 100%. Nā te mea he iti, he kore rānei e mimiti i a rātou e maroke ana, he pai te piri o ngā PUD UV WB ki ngā papa maha. He ngāwari te whakahaere i te kanapa o ēnei paninga mā te whakamahi i ngā kaihoko whāriki tuku iho. Ka tino mārō ēnei polymer engari he tino ngāwari hoki, ā, he pai mō ngā paninga rakau o waho.
Wā tuku: Maehe-07-2024
