Ubuchwepheshe bokwelapha be-UV buye benza izinguquko embonini yokunyathelisa, banikeza izikhathi zokuphulukisa ngokushesha, ukwanda kokukhiqiza nokunciphisa ukusetshenziswa kwamandla.Kodwa-ke, ukuba khona komoyampilo phakathi nenqubo yokwelapha kungaba nomthelela omkhulu ekusebenzeni kwe-UV yokwelapha oyinki.
Ukuvinjelwa komoyampilo kwenzeka lapho amangqamuzana omoya-mpilo ephazamisa i-polymerization yamahhala ye-radical, okuholela ekwelapheni okungaphelele kanye nokusebenza kukayinki okusengozini.Lesi simo sivezwa kakhulu ngoyinki abancane futhi abanendawo ephezulu nesilinganiso sevolumu.
Uma ama-ink awelaphekayo e-UV evezwa emoyeni ozungezile, ama-molecule omoya-mpilo ancibilika ekwakhekeni kukayinki nomoya-mpilo osakazwa emoyeni ungaphazamisa inqubo yokwenza i-polymerization.Ukuhlushwa okuphansi kwe-oxygen encibilikile kudliwa kalula ama-radicals amahhala asebenzayo, okuholela esikhathini sokungeniswa kwe-polymerization.Ngakolunye uhlangothi, i-oxygen ehlala isakazeka kuyinki evela endaweni yangaphandle iba imbangela eyinhloko yokuvimbela.
Imiphumela yokuvimbela i-oxygen ingabandakanya izikhathi ezinde zokuphulukisa, ukunamathela kwendawo kanye nokwakheka kwezakhiwo ezine-oxidized endaweni eyinki.Le miphumela inganciphisa ubulukhuni, isicwebezelisi nokumelana nokuklwebheka kukayinki ophulukisiwe futhi kuthinte ukuzinza kwayo kwesikhathi eside.
Ukunqoba lezi zinselele, abacwaningi kanyeAbakhiqizi be-UV LEDbaye bahlola amasu ahlukahlukene.
Okokuqala ukushintsha indlela yokusabela.Ngokuthuthukisa isistimu ye-photoinitiator, ukuvinjelwa komoyampilo ongaphezulu kukayinki ophulukisiwe kungacindezelwa ngempumelelo.
Ukwandisa ukugxila kwama-photoinitiators kungenye indlela yokunciphisa imiphumela yokuvimbela umoya-mpilo.Ngokungeza ama-photoinitiators engeziwe, ukwakheka kwe-inki kumelana kakhulu nokuvinjwa komoyampilo.Lokhu kubangela ubulukhuni be-inki obuphezulu, ukunamathela okungcono kanye nokucwebezela okuphezulu ngemva kokwelapha.
Ngaphezu kwalokho, ukukhulisa ukuqina kwemishini yokwelapha ye-UV emshinini wokwelapha kusiza ukunciphisa imiphumela emibi yokuvinjwa komoyampilo.Ngokwandisa amandla omthombo wokukhanya we-UV, inqubo yokwelapha iba yimpumelelo futhi inxephezele ukusebenza okuncishisiwe okubangelwa ukuphazamiseka komoyampilo.Lesi sinyathelo kufanele silinganiswe ngokucophelela ukuze kuqinisekiswe ukwelashwa okufanele ngaphandle kokulimaza i-substrate noma ukubangela eminye imiphumela emibi.
Okokugcina, ukuvinjelwa komoyampilo kungancishiswa ngokungeza i-oxygen scavenger eyodwa noma ngaphezulu emishinini yokunyathelisa.Lawa ma-scavengers asabela nomoya-mpilo ukunciphisa ukugxila kwawo, kanye nenhlanganisela yokuqina okuphezuluIsistimu yokwelapha ye-UV ye-LEDkanye ne-oxygen scavenger inganciphisa umthelela we-oxygen enqubweni yokwelapha.Ngalezi zithuthukisi, abakhiqizi bangakwazi ukufeza ukusebenza okungcono kokuphulukisa futhi banqobe izinselele zokuvinjelwa kwe-oxygen.
Isikhathi sokuthumela: Jan-19-2024