I-'Dual Cure' itshintsha ibe yi-UV LED

Emva kweminyaka ephantse ibe lishumi yokwaziswa kwazo, ii-inki ze-UV LED ezinyangekayo ziyasetyenziswa ngesantya esikhawulezileyo ngabaguquli beeleyibhile. Iingenelo ze-inki kunee-inki ze-UV ze-mercury 'eziqhelekileyo' - ukunyanga okungcono nokukhawulezileyo, ukuphuculwa kozinzo kunye neendleko zokusebenza eziphantsi - ziya ziqondwa ngokubanzi. Ukongeza, ubuchwepheshe buya bufikeleleka lula njengoko abavelisi beendaba benikezela ngokubandakanya uluhlu olubanzi lwezibane ezihlala ixesha elide kwimigca yabo.
Ngaphezu koko, kukho inkuthazo enkulu kubaguquli ukuba bacinge ngokutshintshela kwi-LED, kuba iingozi kunye neendleko zokwenza njalo ziyancipha. Oku kuququzelelwa kukufika kwesizukulwana esitsha seenki kunye neengubo 'ezimbini' ezinokusebenza phantsi kwezibane ze-LED kunye neze-mercury, okuvumela abaguquli ukuba bamkele ubuchwepheshe ngamanyathelo, endaweni yokuba ngequbuliso.
Umahluko ophambili phakathi kwesibane se-mercury esiqhelekileyo kunye nesibane se-LED bubude be-wavelengths obukhutshwayo ukuze kucinywe. Isibane se-mercury-vapor sikhupha amandla kwi-spectrum ephakathi kwama-220 nama-400 nanometers (nm), ngelixa izibane ze-LED zinobude be-wavelength obuncinci phakathi kwama-375nm kunye nama-410nm kwaye zifikelela kwi-395nm.
Ii-inki ze-UV LED zinyangwa ngendlela efanayo nee-inki ze-UV eziqhelekileyo, kodwa ziyayiva i-wavelength encinci yokukhanya. Ngoko ke, zahlukile kwelinye nelinye kwiqela le-photoinitiators ezisetyenziselwa ukuqalisa i-curing reaction; ii-pigments, ii-oligomers kunye nee-monomers ezisetyenzisiweyo ziyafana.
Ukucoca nge-UV LED kunika iingenelo ezinamandla zokusingqongileyo, umgangatho, kunye nokhuseleko ngaphezu kokucoca okuqhelekileyo. Le nkqubo ayisebenzisi mercury okanye i-ozone, ngoko ke akukho nkqubo yokukhupha i-ozone efunekayo ukususa i-ozone kwindawo eprintayo.
Ikwabonelela ngokusebenza kakuhle kwexesha elide. Isibane se-LED singavulwa sivalwe ngaphandle kwemfuneko yokufudumeza okanye yokuphola, nto leyo enika ukusebenza okuphezulu ukususela ngexesha esivulwa ngalo. Akukho mfuneko yokuba izivalo zikhusele i-substrate ukuba isibane sicinyiwe.