Kev siv cov ntawv polycarbonate rau vov tsev tau yuav luag ua ke nrog
tiv thaiv los ntawm UV hluav taws xob. Tab sis qhov kev tiv thaiv no txhais li cas tiag? Thiab yog dab tsi
kev tiv thaiv zoo rau?
Dab tsi yog ultraviolet hluav taws xob?
Ultraviolet (UV) hluav taws xob yog ib hom hluav taws xob hluav taws xob hluav taws xob uas muaj cov yam ntxwv ntawm nws cov zaus ntau dua thiab luv wavelength piv rau pom lub teeb. Nws ntog sab nraum qhov ntau ntawm pom lub teeb ntawm lub electromagnetic spectrum. UV hluav taws xob yog tawm los ntawm lub hnub thiab ntau yam khoom tsim, xws li tanning teeb thiab vuam arcs.
Muaj peb yam tseem ceeb ntawm UV hluav taws xob, txhua qhov sib txawv wavelengths thiab zog:
UVA ({0}} nm): UVA muaj qhov ntev wavelength ntawm peb hom UV hluav taws xob. Nws feem ntau hu ua "ntev-yoj" UV thiab yog qhov muaj zog tshaj plaws. UVA rays tuaj yeem nkag mus rau ntawm daim tawv nqaij tob thiab muaj lub luag haujlwm ua rau cov tawv nqaij laus ntxov ntxov, wrinkles, thiab tuaj yeem ua rau mob qog noj ntshav.
UVB ({0}} nm): UVB yog nruab nrab wavelength thiab feem ntau hu ua "nruab nrab-yoj" UV. Nws muaj zog ntau dua li UVA thiab tuaj yeem ua rau tshav ntuj, DNA puas, thiab pab txhawb kev loj hlob ntawm daim tawv nqaij. Txawm li cas los xij, UVB rays kuj tsim nyog rau kev tsim cov vitamin D hauv daim tawv nqaij.
UVC ({0}} nm): UVC muaj qhov luv tshaj wavelength thiab yog lub zog tshaj plaws ntawm peb hom. Hmoov zoo, yuav luag tag nrho UVC hluav taws xob tau nqus los ntawm lub ntiaj teb huab cua thiab tsis ncav cuag qhov chaw. UVC yog qhov tsis zoo rau cov kab mob uas muaj sia nyob thiab feem ntau siv rau kev tua kab mob hauv qhov chaw tswj hwm.
Kev raug UV hluav taws xob, tshwj xeeb tshaj yog ntau dhau thiab tsis muaj kev tiv thaiv, tuaj yeem ua rau muaj kev phom sij rau cov kab mob nyob. Hauv tib neeg, nws tuaj yeem ua rau cov tawv nqaij puas, teeb meem ntawm qhov muag (xws li cataracts), thiab muaj kev pheej hmoo ntau dua ntawm daim tawv nqaij. UV hluav taws xob kuj yog ib qho tseem ceeb ntawm kev degradation ntawm cov ntaub ntawv thiab qhov chaw raug tshav ntuj, xws li ntaub, plastics, thiab xim.
Txhawm rau tiv thaiv koj tus kheej los ntawm kev phom sij ntawm UV hluav taws xob, nws yog ib qho tseem ceeb uas yuav tsum siv tshuaj pleev thaiv hnub nrog kev tiv thaiv dav dav, hnav khaub ncaws tiv thaiv thiab looj tsom iav dub, thiab tsis txhob raug tshav ntuj ntau dhau, tshwj xeeb tshaj yog thaum lub hnub ci siab tshaj.
Puas yog polycarbonate thaiv UV hluav taws xob?
Yog lawm, polycarbonate paub txog nws lub peev xwm los thaiv UV hluav taws xob rau qee yam. Cov nplooj ntawv polycarbonate feem ntau yog siv rau hauv cov ntawv thov uas tiv thaiv UV yog qhov tseem ceeb, xws li hauv awnings, skylights, tsev cog khoom vaj huam sib luag, thiab cov iav tiv thaiv. Txawm li cas los xij, qib ntawm UV tiv thaiv los ntawm polycarbonate tuaj yeem sib txawv raws li cov qauv tsim tshwj xeeb ntawm cov khoom siv thiab cov txheej txheem ntxiv uas yuav siv tau.
Cov ntawv txheeb polycarbonate ib txwm muaj qee qhov kev tiv thaiv UV-thaiv, feem ntau hauv UVB ntau yam. Qhov no txhais tau tias lawv tuaj yeem muab kev tiv thaiv tiv thaiv UVB rays, uas yog lub luag haujlwm ua rau lub hnub ci thiab ua rau cov tawv nqaij puas. Txawm li cas los xij, lawv yuav tsis muaj txiaj ntsig zoo ntawm kev thaiv UVA rays, uas nkag mus rau ntawm daim tawv nqaij ntau dua thiab cuam tshuam nrog kev laus ntawm daim tawv nqaij mus ntev thiab muaj kev pheej hmoo siab ntawm daim tawv nqaij.
Cov neeg tsim khoom feem ntau txhim kho kev tiv thaiv UV ntawm cov nplooj ntawv polycarbonate los ntawm kev ntxiv UV stabilizers lossis coatings thaum lub sijhawm tsim khoom. Cov additives no pab kom ntev lub neej ntawm cov khoom los ntawm kev txo qis degradation thiab yellowing los ntawm UV raug. Lawv kuj tuaj yeem muab kev tiv thaiv zoo dua rau UVA thiab UVB rays.
Yog tias koj tab tom txiav txim siab siv polycarbonate rau cov ntawv thov uas xav tau kev tiv thaiv UV tseem ceeb, xws li awnings lossis vaj tsev cog khoom, nws yog ib lub tswv yim zoo los xaiv cov ntawv polycarbonate uas tau tsim tshwj xeeb los muab kev tiv thaiv UV. Cov nplooj ntawv no tau sau tias "UV-tiv thaiv" lossis "UV-coated" thiab raug tsim los muab kev ua haujlwm zoo nyob rau hauv ib puag ncig sab nraum zoov.
Thaum kawg, yog tias kev tiv thaiv UV yog qhov kev txhawj xeeb tseem ceeb, nws raug nquahu kom sab laj nrog cov chaw tsim khoom lossis cov chaw muag khoom kom ntseeg tau tias koj xaiv cov
Xaus
Hauv cov ntsiab lus ntawm polycarbonate thiab nws lub luag haujlwm hauv kev tiv thaiv hluav taws xob ultraviolet, nws yog ib qho tseem ceeb kom paub txog ob hom kev tiv thaiv. Thawj txheej ntawm kev tiv thaiv kev txhawj xeeb txog cov hauv qab lub ru tsev polycarbonate - ob leeg tib neeg thiab cov khoom. Txawm hais tias cov yam ntxwv tshwj xeeb xws li cov duab, tuab, lossis xim, txhua daim ntawv polycarbonate inherently muab qhov kev tiv thaiv no tiv thaiv UV rays. Qhov kom zoo dua ntawm polycarbonate dua lwm cov ntaub ntawv translucent yog qhov tseem ceeb. Qhov thib ob lub ntsej muag ntawm kev tiv thaiv muaj feem xyuam rau kev khaws cia ntawm daim ntawv nws tus kheej, kom ntseeg tau nws cov txiaj ntsig zoo thiab cov khoom muaj txiaj ntsig. Thaum xaiv los nruab cov nplooj ntawv no sab nraum zoov, nws yog ib qho tseem ceeb uas yuav tsum tau ua qhov tseem ceeb rau kev kho kom zoo UV tiv thaiv kom tiv thaiv lawv lub neej ntev.
UNQkuaj cov ntawv polycarbonate hauv qhov chaw uas simulates ntev raug rau UV, hu ua Accelerated Weathering Tester. Qhov chaw no tso cai rau peb los ntsuas qhov kev ua tau zoo yav tom ntej ntawm peb cov khoom thaum nruab rau hauv ntau qhov chaw ntawm lub ntiaj teb, thiab txhim kho cov txheej txheem tsim nyog rau txhua daim ntawv thov.
