'Dual Cure' ua rau qhov hloov mus rau UV LED du dua

Yuav luag kaum xyoo tom qab lawv tau qhia tawm, cov kua nplaum UV LED kho tau tau raug siv sai sai los ntawm cov neeg hloov daim ntawv lo. Cov txiaj ntsig ntawm cov kua nplaum dua li cov kua nplaum mercury UV 'ib txwm muaj' - kho tau zoo dua thiab sai dua, txhim kho kev ruaj khov thiab txo cov nqi khiav lag luam - tau nkag siab ntau dua. Tsis tas li ntawd, cov thev naus laus zis tau yooj yim nkag mus tau vim tias cov tuam txhab tsim ntawv xov xwm muab ntau yam teeb pom kev zoo uas siv tau ntev rau ntawm lawv cov kab.
Ntxiv mus, muaj kev txhawb siab ntau dua rau cov neeg hloov pauv kom xav txog kev hloov mus rau LED, vim tias qhov kev pheej hmoo thiab cov nqi ntawm kev ua li ntawd tau txo qis. Qhov no tau raug pab txhawb los ntawm kev tuaj txog ntawm tiam tshiab ntawm 'dual cure' inks thiab coatings uas tuaj yeem khiav hauv qab LED thiab mercury teeb, tso cai rau cov neeg hloov pauv kom txais yuav cov thev naus laus zis ua cov kauj ruam, es tsis txhob ua sai sai.
Qhov txawv tseem ceeb ntawm lub teeb mercury ib txwm muaj thiab lub teeb LED yog qhov ntev ntawm cov hluav taws xob uas tso tawm rau kev kho kom qhuav. Lub teeb mercury-vapor ci lub zog hla lub spectrum ntawm 220 thiab 400 nanometers (nm), thaum lub teeb LED muaj qhov ntev ntawm cov hluav taws xob nqaim dua ntawm kwv yees li 375nm thiab 410nm thiab nce mus txog 395nm.
Cov kua xim UV LED raug kho kom zoo ib yam li cov kua xim UV ib txwm muaj, tab sis lawv rhiab rau qhov ntev ntawm lub teeb. Yog li ntawd, lawv txawv ntawm ib leeg los ntawm pawg ntawm cov photoinitiators siv los pib qhov kev kho kom zoo; cov pigments, oligomers thiab monomers siv yog tib yam.
Kev kho UV LED muaj cov txiaj ntsig zoo rau ib puag ncig, zoo, thiab kev nyab xeeb dua li kev kho ib txwm muaj. Cov txheej txheem no tsis siv mercury lossis ozone, yog li tsis tas yuav muaj lub tshuab rho tawm los tshem tawm ozone ntawm ib puag ncig lub tshuab luam ntawv.
Nws kuj muaj kev ua haujlwm ntev thiab. Lub teeb LED tuaj yeem qhib thiab kaw yam tsis tas yuav tsum tau sov lossis txias, muab kev ua haujlwm zoo tshaj plaws txij thaum nws qhib. Tsis tas yuav tsum muaj cov ntaub thaiv qhov rai los tiv thaiv lub substrate yog tias lub teeb raug kaw.