Muaj ntau homfluorescent whitening agents, thiab lawv tsim nyog rau ntau yam khoom siv fiber ntau thiab muaj ntau yam kev siv thiab ntau npaum li cas.Txawm hais tias cov qauv tshuaj thiab kev ua tau zoo ntawm ntau hom tshuaj fluorescent whitening agents txawv, cov txheej txheem ntxuav hniav dawb rau cov khoom xws li fibers yog tib yam.
Txij li thaum tus neeg sawv cev fluorescent whitening yog ib yam khoom siv dawb, vim li cas nws siv ntau dhau ntawm cov ntaub tsis tuaj yeem ua kom dawb thiab ua rau cov xim dawb txo?Lub molecule ntawm fluorescent whitening tus neeg saib xyuas muaj ib tug conjugated ob daim ntawv cog lus system, uas muaj zoo planarity.Cov qauv molecular tshwj xeeb no tuaj yeem nqus cov duab tsis pom ntawm ultraviolet rays nyob rau hauv tshav ntuj, yog li xav txog thiab emitting xiav-violet lub teeb, thiab thaum kawg ntawm cov ntaub fiber ntau.Ua ke nrog lub teeb daj, nws emits lub teeb dawb uas pom ntawm qhov muag liab qab, thiaj li ua tiav cov txiaj ntsig ntawm kev tshem tawm daj thiab dawb.
Lub ntsiab brightening txoj cai ntawm optical brighteners yogkho qhov muag brightening, tsis yog tshuaj bleaching uas tsim cov tshuaj tiv thaiv.Yog li ntawd, ua ntej siv optical brighteners nyob rau hauv fabrics, kom zoo tshuaj bleaching yuav ua rau cov optical brighteners ua hauj lwm.Cov nyhuv loj tshaj plaws.Cov ntsiab lus ntawm ultraviolet rays nyob rau hauv tshav ntuj irradiated ntawm cov ntaub thiab cov concentration ntawm fluorescent whitening tus neeg saib xyuas nyob rau hauv cov ntaub yog piav raws li lub hauv paus ntsiab lus ntawm whitening tus neeg sawv cev.Ob lub ntsiab lus saum toj no txiav txim siab cov nyhuv whitening ntawm optical brightening tus neeg sawv cev hauv cov ntaub.
Thaum UV cov ntsiab lus nyob rau hauv lub hnub ci txaus, qhov concentration ntawm fluorescent whitening tus neeg sawv cev nyob rau hauv cov ntaub yog nyob rau hauv lub feem ntau siv, thiab cov nyhuv whitening ntawm cov khoom yuav nce raws li cov concentration ntawm fluorescent whitening neeg sawv cev nce.Thaum cov concentration ntawm fluorescent whitening tus neeg sawv cev mus txog ib qho kev pom zoo nyob rau hauv cov ntaub, cov nyhuv whitening yog qhov zoo tshaj plaws, thiab lub siab tshaj plaws whiteness tus nqi uas cov khoom tam sim no tuaj yeem ua tiav.Thaum cov ntsiab lus ntawm cov fluorescent brightener tshaj qhov tseem ceeb ntawm cov khoom siv ntaub tam sim no, cov ntaub dawb yuav tig daj lossis txawm tias pom cov xim qub ntawm lub ci ci.Yog li qhov zoo tshaj plaws concentration siv nyob rau hauv cov ntaub yog hu ua yellowing point ntawm lub brightener.Yog li vim li cas qhov whiteness txo qis thaum tus nqi ntawm cov brightener siv hauv cov ntaub ntau dhau?
Thaum lub concentration ntawm cov fluorescent brightener ntawm cov khoom ntaub mus txog lub yellowing point ntawm lub brightener, qhov kev siv ntawm lub xiav-violet lub teeb tshwm sim los ntawm lub brightener thiab lub teeb daj ntawm cov ntaub ntxiv ib leeg, thiab cov brightening nyhuv yog qhov zoo tshaj plaws ntawm lub brightener. lub sijhawm no.Thiab thaum lub concentration ntau tshaj qhov yellowing point ntawm lub brightener, lub reflected xiav-violet lub teeb tshaj lub teeb daj ntawm cov ntaub, ua rau lub teeb xiav-violet ntau dhau, thiab qhov kawg qhov muag liab qab pom yog ib qho tseem ceeb txo qis hauv whiteness los yog txawm. daj daj.
Yog li ntawd, ua ntej ntxiv cov fluorescent brightener rau cov khoom, cov qauv nruam yuav tsum tau coj mus kuaj lub yellowing point ntawm tam sim no hom brightener nyob rau hauv fabrics thiab lwm yam khoom.Yog li los kho qhov pom zoo ntxiv kom ua kom cov nyhuv whitening.
Post lub sij hawm: Nov-10-2021