Yog vim li cas tus nqi ntawm Optical Brightening Agent ntau dhau lawm, hloov, Whiteness ntawm cov ntaub yuav txo qis?

Muaj ntau ntau hom tshuaj kho qhov muag pom kev, thiab muaj qee hom tshuaj pleev xim rau kev ua kom dawb ntawm ntau cov fibers.

Txawm hais tias cov qauv tshuaj thiab cov khoom ntawm ntau yam tshuaj ntxuav hniav dawb txawv, lub hauv paus ntsiab lus ntawm whitening fibers los yog fabrics yog tib yam.

Lub hauv paus ntsiab lus ntawm kev ntxuav hniav dawb yog feem ntau yog los ntawm kev sib koom ua ke ob daim ntawv cog lus hauv cov molecule ntawm tus neeg sawv cev dawb, uas muaj cov qauv zoo.Cov qauv molecular tshwj xeeb no tuaj yeem nqus cov kab hluav taws xob ultraviolet (wavelength 300-400nm) nyob rau hauv tshav ntuj nyob rau hauv tshav ntuj thiab emit.Lub teeb xiav-violet (wavelength 420-500 nm), lub teeb xiav-violet yog tov nrog lub teeb daj ntawm cov fiber ntau los yog cov ntaub los ua lub teeb dawb, kom cov fiber ntau los yog ntaub yog pom tseeb whitened.

Reflection nkhaus ntawm tus qauv uas muaj lub teeb ci

Cov nyhuv brightening ntawm fluorescent whitening tus neeg saib xyuas tsuas yog kho qhov muag brightening thiab xim supplementation, thiab nws tsis tuaj yeem hloov tshuaj bleaching.Vim li no, cov nyhuv whitening ntawm fluorescent whitening tus neeg sawv cev ntawm cov ntaub tsis muaj tshuaj dawb tsis yog qhov zoo tagnrho.Los ntawm lub hauv paus ntsiab lus ntawm fluorescent whitening tus neeg saib xyuas, cov nyhuv whitening ntawm tus neeg sawv cev whitening yog tsuas yog txiav txim los ntawm cov ntsiab lus ntawm ultraviolet rays nyob rau hauv tshav ntuj thiab cov concentration ntawm fluorescent whitening neeg sawv cev ntawm fiber los yog ntaub.

Thaum cov ntsiab lus ntawm ultraviolet lub teeb nyob rau hauv lub hnub ci txaus, thaum lub concentration ntawm fluorescent whitening tus neeg sawv cev ntawm cov ntaub hloov nyob rau hauv ib tug tej yam ntau yam, nws cov nyhuv whitening yog enhanced nrog rau cov concentration ntawm whitening tus neeg sawv cev ntawm cov ntaub;

Txawm li cas los xij, thaum lub concentration ntawm tus neeg sawv cev whitening yog nce mus rau ib tug zoo concentration, cov nyhuv whitening yog qhov zoo tshaj plaws thiab lub siab tshaj plaws whiteness tus nqi yuav tau.Yog hais tias tus nqi ntawm tus neeg sawv cev whitening ntau tshaj qhov zoo tshaj plaws concentration, tsis tsuas yog lub whitening nyhuv ntawm cov ntaub yog tsis yog nce, tab sis kuj txo me ntsis (uas yog, lub thiaj li hu ua yellowing ntawm ntaub, tab sis lub whiteness txo).Lub sijhawm no, qhov zoo tshaj plaws concentration ntawm brightener yog hu ua yellowing point ntawm brightener.

Lub yellowing point ntawm ntau yam fluorescent whitening agents txawv.Piv txwv li, fluorescent whitening tus neeg sawv cev DT (rau polyester) muaj qhov yellowing point ntawm 0.8%.Ntawd yog, thaum polyester yog whitened, thaum tus nqi ntawm DT whitening tus neeg sawv cev tshaj 0.8%, nws whiteness nqi txo nrog nce concentration.

                                                                Yellow point

Cov fluorescent whitening agent VBL (rau paj rwb ntaub) muaj ib tug yellowing point ntawm 0.5%, fluorescent whitening agent DCB (rau acrylic whitening) muaj ib tug yellowing point ntawm 0.8%, thiab fluorescent whitening agent CH (Rau acrylic nthuav xov paj) Nws yellowing. point yog 3.3%, Blankophor BBU (kua) (Bayer tuam txhab khoom, rau paj rwb fabrics) Nws yellowing point yog 1.26%, Uvitex (ERN-P CGY tuam txhab khoom, rau polyester fabrics) muaj ib tug yellowing point ntawm 0.8%, UvitexEBF 250% (paste) (CGY tuam txhab khoom, rau polyester fabrics) muaj ib tug yellowing point ntawm 3%.

Yog li, vim li cas cov nyhuv whitening tsis nce ntxiv nrog qhov nce ntawm cov concentration ntawm fluorescent brightener ntawm cov ntaub, lub ntsiab yog vim li cas: vim hais tias qhov siv ntawm lub teeb daj ntawm cov ntaub yog txwv, lub teeb daj raug tshem tawm (lub ntsiab wavelength. yog hais txog 570nm) Cov xim ntxiv ntawm lub teeb daj tawm los ntawm fluorescent whitening tus neeg sawv cev uas absorbs ultraviolet lub teeb thiab emits xiav-violet teeb kuj txwv.

Raws li qhov concentration ntawm fluorescent whitening tus neeg sawv cev ntawm cov ntaub nce, qhov kev siv ntawm lub teeb xiav-violet kuj nce ntxiv, yog li offsetting ib feem ntawm lub teeb daj ntawm cov ntaub, uas maj mam txo qhov kev siv ntawm lub teeb daj, thiab cov ntaub yuav dhau los ua. ntau thiab dawb.

Thaum cov concentration ntawm fluorescent whitening tus neeg sawv cev ntawm cov ntaub yog nce mus rau ib tug tsim nyog concentration (uas yog, yellowing point ntawm tus neeg sawv cev whitening), qhov kev siv ntawm xiav-violet lub teeb emission yog raws nraim sib npaug zos rau qhov siv ntawm lub teeb daj ntawm cov ntaub, uas raws nraim tshem tawm ib leeg.Thaum lub sij hawm no, cov ntaub Nws kuj yog whitest thiab muaj qhov zoo tshaj plaws whitening nyhuv.

Thaum qhov kev siv ntawm lub teeb xiav-violet ntau dua qhov kev siv ntawm lub teeb daj ntawm cov ntaub, lub teeb xiav-violet tshwm sim los ntawm qhov ci ci yog qhov pom tseeb heev.Tam sim no, vim muaj ntau pawg sib txawv ntawm cov brightener, Cov xim sib txawv (xws li lub teeb liab, liab lub teeb xiav, thiab lwm yam) kuj pom tseeb dua.Raws li qhov tshwm sim ntawm kev sib xyaw ua ke ntawm ob yam saum toj no, lub suab grey ntawm cov ntaub yog nce, thiab nws cov nyhuv yog ntxiv dag zog nrog qhov nce ntawm tus neeg sawv cev whitening concentration, yog li txo cov nyhuv whitening.Tsis muaj lub teeb daj ntawm cov ntaub, tab sis nws tsis zoo li dawb, ci thiab dazzling.

Vim li no, thaum xaiv tus neeg saib xyuas kom dawb, ntxiv rau kev txiav txim siab nws cov nyhuv whitening, nws yog ib qho tsim nyog yuav tsum tau xeem dhau ib qho kev sim kom pom cov xim daj ntawm cov xim sib txawv ntawm cov ntaub rau kev siv tsim nyog kom tau txais cov txiaj ntsig zoo tshaj plaws.