Thaum tiv thaiv cov ntaub ntawv thiab cov khoom lag luam los ntawm cov teebmeem tsis zoo ntawm lub hnub ci, muaj ob qho khoom siv ntxiv uas siv ntau: UV absorbers thiabcov tshuaj stabilizer rau lub teebTxawm hais tias lawv suab zoo sib xws los, ob yam tshuaj no yeej txawv ntawm lawv txoj kev ua haujlwm thiab qib kev tiv thaiv uas lawv muab.

Raws li lub npe qhia, cov khoom nqus UV nqus tau cov hluav taws xob ultraviolet (UV) los ntawm lub hnub. Cov hluav taws xob UV paub tias ua rau muaj kev puas tsuaj ntawm ntau yam khoom, tshwj xeeb tshaj yog cov uas raug tshav ntuj ntev. Cov khoom nqus UV ua haujlwm los ntawm kev nqus cov hluav taws xob UV thiab hloov nws mus ua cua sov, uas tom qab ntawd ploj mus yam tsis muaj kev phom sij.

Cov photostabilizers, ntawm qhov tod tes, ua haujlwm los ntawm kev tiv thaiv cov khoom puas tsuaj los ntawm ultraviolet radiation thiab lub teeb pom kev. Cov khoom nqus UV tsuas yog tsom mus rau kev tiv thaiv los ntawm UV radiation, thaum cov photostabilizers muab kev tiv thaiv dav dua. Tsis yog lawv tsuas yog nqus cov UV radiation xwb, lawv kuj ntes cov free radicals uas tsim los ntawm kev raug lub teeb pom kev.

Lub luag haujlwm ntawmcov tshuaj stabilizer rau lub teebyog kom tshem tawm cov free radicals thiab tiv thaiv lawv kom tsis txhob ua rau cov khoom puas tsuaj. Qhov no ua rau lawv zoo tshwj xeeb hauv kev qeeb qeeb cov txheej txheem lwj ntawm cov khoom uas feem ntau raug rau sab nraum zoov. Los ntawm kev tiv thaiv kev tsim cov free radicals, cov khoom siv stabilizers pab txuas lub neej ntawm cov khoom thiab tswj nws cov qauv.

Tsis tas li ntawd xwb, cov stabilizers feem ntau yog ua ke nrogCov khoom nqus UVlos muab kev tiv thaiv tag nrho los ntawm kev puas tsuaj ntawm lub hnub. Thaum cov tshuaj nqus UV feem ntau daws cov teebmeem ntawm UV hluav taws xob, cov photostabilizers ntxiv ib txheej ntxiv ntawm kev tiv thaiv los ntawm kev tshem tawm cov dawb radicals tsim los ntawm lub teeb pom kev zoo. Los ntawm kev siv ob qho tib si additives ua ke, cov khoom siv tau tiv thaiv los ntawm ntau yam ntawm cov wavelengths phem.

Lwm qhov sib txawv ntawm UV absorbers thiabcov tshuaj stabilizer rau lub teebyog lawv daim ntawv thov thiab kev sib raug zoo nrog cov ntaub ntawv sib txawv. Cov tshuaj nqus UV feem ntau siv rau hauv cov txheej txheem pob tshab, cov yeeb yaj kiab thiab cov polymers vim tias lawv tau tsim los kom pob tshab thiab tsis cuam tshuam rau qhov tsos ntawm cov khoom. Cov tshuaj stabilizers, ntawm qhov tod tes, muaj ntau yam siv tau thiab tuaj yeem siv rau ntau yam kev siv, suav nrog cov yas, roj hmab, xim, thiab cov ntaub.

Xaus lus, txawm hais tias ob qho tib si UV absorbers thiab photostabilizers siv los tiv thaiv cov ntaub ntawv los ntawm kev puas tsuaj los ntawm lub hnub ci, lawv txawv hauv lawv cov txheej txheem ua haujlwm thiab qib kev tiv thaiv. UV absorbers nqus tau hluav taws xob UV, thaum photostabilizers tiv thaiv kev puas tsuaj los ntawm hluav taws xob UV thiab lub teeb pom kev los ntawm kev ua kom cov dawb radicals tsis muaj zog. Los ntawm kev nkag siab txog qhov sib txawv ntawm cov additives no, cov chaw tsim khoom tuaj yeem xaiv qhov kev xaiv tsim nyog tshaj plaws rau lawv daim ntawv thov tshwj xeeb thiab xyuas kom meej tias muaj kev tiv thaiv zoo tshaj plaws rau lawv cov ntaub ntawv.