Waterborne (WB) UV kemisi ua faʻaalia le tuputupu aʻe taua i totonu o fale gaosi oloa faʻatau laupapa aua o le tekinolosi e maua ai le faʻatinoga sili ona lelei, faʻaitiitia le faʻafefe ma faʻateleina le gaosiga lelei. O faiga fa'apipi'i UV e ofoina atu i le tagata fa'ai'uga fa'amanuiaga o vaila'au mata'ina ma le maosi, tete'e poloka sili, VOCs maualalo ma se tulagavae meafaigaluega e itiiti le avanoa e teu ai e mana'omia. O nei faiga e iai meatotino e fa'atusatusa lelei i le lua-vaega urethane system e aunoa ma ni fa'alavelave o feso'ota'iga mata'utia ma popolega i le ola o le ulo. O le faiga atoa e taugofie ona o le faateleina o le saoasaoa o le gaosiga ma le maualalo o tau o le malosi. O nei lava tulaga lelei e mafai ona aoga mo faʻaoga faʻaoga i fafo e aofia ai faʻamalama ma faitotoʻa faʻavaa, siding ma isi millwork. O nei vaega o maketi e masani ona fa'aogaina fa'ama'i emulsions ma polyurethane dispersions ona o lo'o lelei le iila ma le fa'atumauina o lanu, ma fa'aalia ai le sili atu le tumau. I totonu o lenei suʻesuʻega, polyurethane-acrylic resins faʻatasi ai ma galuega a le UV ua iloiloina e tusa ai ma faʻamatalaga faʻapitoa mo faʻaoga laupapa i totonu ma fafo.
E tolu ituaiga o faʻapipiʻi faʻavae e faʻaaogaina e masani ona faʻaaogaina i faʻaoga laupapa faʻapisinisi. O le lacquer Nitrocellulose e masani lava o se faʻafefiloi maualalo o le nitrocellulose ma suauʻu poʻo alkyds faʻavae suauu. O nei paluga e vave fa'agogo ma e maualuga le malosi o le iila. E masani ona fa'aaogaina i meaafale nofomau. E i ai le fa'aletonu o le samasama i le taimi ma e mafai ona pala. E leaga fo'i a latou fa'ama'i. Nitrocellulose lacquers e maualuga tele VOC, e masani lava ile 500 g/L pe maualuga. Lacquers muai catalyzed o fefiloi o nitrocellulose, suauu po o alkyds faavae suauu, plasticizers ma urea-formaldehyde. Latou te faʻaaogaina se faʻamaʻi vaivai vaivai e pei ole butyl acid phosphate. O nei fa'alavalava e iai lona ola e tusa ma le fa masina. E faʻaaogaina i ofisa, faʻalapotopotoga ma meafale nofomau. Lacquers muamua catalyzed e sili atu le tetee atu vailaau nai lo le nitrocellulose lacquers. E maualuga tele foi a latou VOC. Varnishes liua o faʻafefiloi o alkyds faʻavae suauu, urea formaldehyde ma melamine. Latou te fa'aogaina se fa'amalama malosi e pei ole p-toluene sulfonic acid. O lo'o i ai le ola o le ipu e 24 i le 48 itula. O lo'o fa'aaogaina i totonu o le umukuka kapoti, meafale a le ofisa ma meaafale nofomau. O varnishes liua e i ai mea sili ona lelei o ituaiga e tolu o faʻapipiʻi faʻavae e masani ona faʻaaogaina mo fafie faʻapisinisi. E maualuga tele a latou VOC ma formaldehyde.
Emulsions emulsions acrylic e faavae i luga o le tagata lava ia-crosslinking ma polyurethane dispersions e mafai ona avea ma filifiliga sili ona lelei i mea solvent-faavae mo talosaga laau alamanuia. Emulsions Acrylic ofoina atu vailaau sili ona lelei ma poloka tetee, tulaga maualuga maaa, tulaga ese le tumau ma le tau, ma faaleleia le pipii i luga e le porous. E vave ona latou taimi mago, e mafai ai e le kapeneta, meafale po'o fale gaosi oloa ona taulimaina vaega i le taimi lava e uma ai le faʻaogaina. O PUD e ofoina atu le malosi o le abrasion resistance, fetuutuunai, ma le maosi ma faʻaleagaina. O i latou o pa'aga fa'afefiloi lelei ma emulsions acrylic e fa'aleleia ai mea fa'ainisinia. O emulsions acrylic uma ma PUD e mafai ona tali atu i vailaʻau faʻafesoʻotaʻi e pei o polyisocyanates, polyaziridine poʻo carbodiimides e fausia ai le 2K coatings ma faʻaleleia meatotino.
O pa'u vai e mafai ona fa'amaloloina le UV ua avea ma filifiliga lauiloa mo fa'aoga laupapa fa'apisinisi. O le kapoti umukuka ma le au fai meaafale e filifilia nei mea faʻapipiʻi aua e lelei tele a latou teteʻe ma mea faʻainisinia, faʻaoga lelei mea faʻaoga ma faʻaitiitia le faʻafefe o le solvent. WB UV coatings e sili ona lelei poloka poloka i le taimi lava e maeʻa ai le fofo, lea e mafai ai ona faʻaputu, afifi ma lafo saʻo vaega o loʻo ufiufi mai le laina gaosiga e aunoa ma se taimi e nofo ai mo le faʻamalosia o le atinaʻeina. O le atinaʻeina o le maaa i le WB UV coating e mataʻina ma e tupu ile sekone. O le vaila'au ma le pisia o le WB UV coatings e sili atu nai lo varnish liliu mai solvent.
WB UV coatings e tele fa'amanuiaga fa'apitoa. E ui o le 100%-solid UV oligomers e masani lava ona maualuga i le viscosity ma e tatau ona faʻafefeteina i mea faʻafefete, WB UV PUDs e maualalo i le viscosity, ma e mafai ona fetuunai le viscosity faʻatasi ma suiga masani WB rheology. WB UV PUD e iai le mamafa muamua mole mole ma e le fausia le mamafa mole mole a'o latou fa'amaloloina e pei o le 100% pa'u malosi UV. Talu ai e laʻititi pe leai foi a latou faʻafefe aʻo latou togafitia, o le WB UV PUDs e sili ona lelei le pipii i le tele o mea'ai. O le iila o nei fa'alavalava e faigofie ona fa'atonutonuina i so'o fa'asolo fa'asolo. O nei polymers e mafai ona matua'i ma'a'a ae e matua fetuutuuna'i fo'i, ma avea ai i latou ma sui fa'ata'ita'i mo fa'alava fafie i fafo.
Taimi meli: Mati-07-2024
