Qhov ntawd yog ib qho tshwm sim heev thiab zoo - nkag siab qhov tshwm sim nrog UV LED teeb. Cov ntshiab polycarbonate (PC) los yog acrylic npog tig dawb los yog pos huab yog tshwm sim los ntawmUV-induced photodegradation(tshwj xeeb,duab -oxidation).
Nov yog cov ncauj lus kom ntxaws:
1. Lub hauv paus ua rau: Photodegradation ntawm Polymers
Polycarbonate thiab ntau lwm yam yas yogtsis yog UV- ruaj khov. Thaum lawv tuaj yeem pom meej meej, qhov siab -zog photons los ntawm UV lub teeb (tshwj xeeb yog UVA ntawm 365–405 nm) rhuav tshem cov tshuaj sib txuas hauv cov saw hlau polymer.
Bond Scission:UV hluav taws xob muaj zog txaus los rhuav tshem C-C, C-H, thiab C-O daim ntawv cog lus hauv cov yas.
Tsim cov dawb radicals:Qhov no tsim cov chaw reactive ntawm cov saw hlau polymer.
Oxidation:Cov radicals no hnov mob nrog oxygen atmospheric (duab-oxidation), tsim cov tshuaj tshiab xws li carbonyls, peroxides, thiab hydroxyl uas tawg lub teeb.
2. Vim Li Cas Nws Thiaj Hloov Dawb / Daj?
Cov tshuaj hloov pauv tsim:
Micro- tawg & vwmntawm qhov chaw (vim embrittlement).
Kev hloov pauv hauv qhov ntsuas refractivenyob rau hauv ib cheeb tsam degraded.
Tsim kom muaj lub teeb- tawg chaw(cov voids me me, oxidized hais).
Qhov notawg ntawm lub teebua rau lub npog ntsej muag pom tsis pom, tsaus muag, lossis xim dawb - txawm tias cov khoom siv loj yuav tseem pob tshab me ntsis yog tias koj saib ntawm ntug. UV npog ua dawb npog tom qab siv 2 lub lis piam, vim nws siv PC npog, zoo li hauv qab daim duab
3. Kev Pabcuam
Lub wavelength:Qhov luv luv wavelengths (UVC, UVB) ua rau kev puas tsuaj sai dua li UVA, tab sis txawm tias 395-405 nm UV LEDs ua rau qeeb degradation.
Thaum tshav kub kub:UV LEDs ua kom sov, thiab thermal cycling accelerates polymer aging.
Tsis muaj UV Stabilizers:Pheej yig los yog generic PC npog feem ntau tsis txaus UV stabilizers, absorbers, los yog coatings uas yuav tiv thaiv qhov no.
Moisture & Environmental Exposure:Cov av noo thiab cov pa phem tuaj yeem ua kom cov txheej txheem.
4. Yuav tiv thaiv lossis qeeb li cas
Cov neeg tsim khoom tuaj yeem:
SivUV-stabilized polycarbonate(muaj cov additives uas nqus UV thiab dissipate lub zog li cua sov yam tsis muaj degrading).
Thovtiv thaiv txheej(piv txwv li, silicone hardcoat, UV-resistant acrylic top txheej).
Siv lwm cov ntaub ntawv xws liUV-qib quartz iav, borosilicate iav, los yogsapphire npograu siab -lub zog UV tshuab (ntau dua tab sis tiv thaiv UV yellowing).
Xyuas kom txauskub dab dejkom txo tau thermal stress ntawm lub hau.
peb tuaj yeem siv UV-Qib quartz iav, zoo li hauv qab Hloov Kho UV LED Teeb
5. Koj Yuav Ua Li Cas Tam Sim No
Yog hais tias lub npog twb whitened:
Hloov nwsnrog rau UV- tiv thaiv npog.
Lightly polishing nrog yas polishmuaj peev xwmtshem tawm cov nplaim taws kub hnyiab yog tias degradation yog ntiav, tab sis feem ntau, qhov kev puas tsuaj yog los ntawm cov khoom nyob ze ntawm qhov chaw, yog li kev hloov pauv yog qhov kho tiag tiag.
Hauv luv luv:Lub hau yas ntshiab tsis yog tsim los tiv thaiv UV ntev ntev. Nws yog tshuaj lom neeg vim UV photons tawm tsam cov polymer - qhov tseem ceeb "sunburn" rau yas. koj tuaj yeem pom ntau cov ntaub ntawv UV ntawmhttp://www.benweilight.com
