Vim li cas UV LED emit xiav lossis violet teeb?
Ntau tus neeg xav paub heev, puas yog lub teeb pom kev tsis pom lub teeb ultraviolet? Yuav ua li cas UVLED curing teeb tseem pom lub teeb liab doog lossis xiav lub teeb thaum nws ua haujlwm? Puas muaj teeb meem nrog lub cuab yeej? Ntawm no peb yuav tham nrog koj txog lub teeb pom kev thiab pom tsis pom. Lub teeb pom kev uas tib neeg lub qhov muag pom tau muaj lub wavelength ntawm 780 thiab 400 nm. Yog tias nws tshaj qhov ntau, nws yog qhov pom tsis pom. Feem ntau, qhov pom tsis pom yuav tsis ua rau tib neeg lub ntsej muag teb, uas yog, pom tsis pom.
Yog li nws sawv rau qhov laj thawj tias uvled curing teeb emits lub teeb ultraviolet, uas yuav tsum yog lub teeb pom kev, yog li vim li cas peb thiaj li pom lub teeb liab liab lossis xiav lub teeb thaum siv uvled teeb?
Qhov laj thawj tseem ceeb yog vim tias lub teeb ci ultraviolet yog lub teeb tiag tiag hauv ultraviolet spectral ntau yam tawm los ntawm kev zoo siab thiab rov ua dua ntawm cov hluav taws xob thiab qhov hauv UVLEDs. Thaum emitting lub teeb ultraviolet, kuj tseem pom lub teeb nyob rau hauv cov kab uas nyob ib sab, yog li ntxiv rau lub teeb ultraviolet, pom lub teeb violet thiab lub teeb xiav kuj tuaj yeem pom. , yog li UVLED curing teeb tuaj yeem pom violet lossis xiav lub teeb.
Tsis tas li ntawd, lub teeb tawm tuaj yeem ceeb toom rau tib neeg tias lawv nyob hauv qab irradiation ntawm ultraviolet lub teeb. Yog tias tsis muaj kev xav tau tshwj xeeb, tsis txhob nyob ntev, vim tias lub teeb ultraviolet emissions los ntawm UVLED belongs rau UVA band, uas yog 320 ~ 420nm, vim nws lub wavelength ntev dua. , tuaj yeem nkag mus rau ntawm daim tawv nqaij thiab ua rau muaj kev phom sij rau tib neeg lub cev.
Lub teeb ultraviolet yog qhov pom tsis pom, thiab lub teeb ultraviolet tuaj yeem pom lub teeb violet vim tias photoinitiator (lossis photosensitizer) ntxiv rau cov khoom siv tshwj xeeb. Tom qab absorbing high-siv ultraviolet lub teeb nyob rau hauv ib tug ultraviolet (UV) lub teeb curing ntaus ntawv, active dawb radicals yog generated. los yog pawg ionic, yog li pib ua polymerization, hla kev sib txuas thiab grafting cov tshuaj tiv thaiv.
Hloov cov resins (UV txheej, inks, adhesives, thiab lwm yam) los ntawm cov kua rau cov khoom hauv vib nas this (vary). (Qhov kev hloov pauv no hu ua "UV curing"). Lub cev muaj zog ntawm UV hluav taws xob hluav taws xob zoo ib yam li pom lub teeb, thiab lawv yog cov kab, tab sis lawv lub zog nkag mus tau tsawg dua qhov pom lub teeb. Zoo sab hauv txheej curing.
