Ua ntej, hnub ci ultraviolet rays raug thaiv thaum lawv irradiated rau cov yeeb yaj kiab tiv thaiv tawg nrog ultraviolet absorber. Lub luag haujlwm ntawm lub absorbent yog nqus lub zog ntawm ultraviolet rays.
Qhov thib ob, tag nrho cov UV absorbers yuav muaj lawv cov txiaj ntsig tau ploj zuj zus mus rau lub sijhawm. Cov qeb, kom muaj nuj nqis thiab qhov chaw ntawm UV absorbers txiav txim siab tus txheeb ze stability ntawm cov absorbers.
Thib peb, ntau lub chaw ua yeeb yaj kiab tawg tau ntxiv UV absorbers rau lub siab-rhiab nplaum nplaum uas lawv siv, thiab cov kev tshawb fawb tau pom tias qhov ruaj khov ntawm qhov absorber no tsawg dua li UV absorbers ntxiv rau hauv cov yeeb yaj kiab.
Plaub, ultraviolet absorber ntxiv rau lub hauv paus zaj duab xis siv yog nyob nruab nrab ntawm 280 thiab 380 nanometers, thiab cov yeeb yaj kiab tawg tuaj yeem thaiv 99 feem pua ntawm cov hluav taws xob ultraviolet.
Thib tsib, hauv qee qhov kev sim kev laus nrawm, cov ntaub ntawv pov thawj tawg tseem tuaj yeem thaiv 98 feem pua ntawm cov teeb meem ultraviolet hluav taws xob tom qab 2000 teev ntawm kev raug mob hauv Xenon teeb ua kom muaj kev laus hauv tsev. Qhov kev laus no yog qhov sib npaug rau kev laus ntawm sab nraum zoov tawg-pov thawj daim nyias nyias rau 3 txog 5 xyoos ntawm kev siv txhua hnub. Hauv kev sim nyob rau hauv tib yam kev mob, UV absorber yog ntxiv rau cov nplaum-rhiab heev. Thaum cov yeeb yaj kiab tawg tau raug teeb tsa, lub peev xwm tiv thaiv UV feem ntau yog 96 feem pua rau 98 feem pua , thiab lub peev xwm thaiv tau mus txog 93 feem pua tom qab 900 teev ntawm sab nraum zoov raug. Tom qab ob peb xyoos ntawm kev tawm sab nraum zoov, hom kev tawg-pov thawj zaj duab xis no muaj kev tiv thaiv UV tsawg heev. Cov yeeb yaj kiab tawg tuaj yeem tiv thaiv tib neeg kev noj qab haus huv tom qab kev tiv thaiv ultraviolet ploj hauv lwm cov khoom!
