Polyester fabrics yog siv ntau dua thiab dav siv hauv cov khaub ncaws, yog li txhua tus neeg them nyiaj ntau dua rau dyeing thiab xim ceev ntawm polyester. Cov hauv qab no yog ib phau ntawm polyester dyeing txheej txheem, cia's saib!
Polyester yog ib qho tseem ceeb ntawm ntau yam hluavtaws fibers, thiab nws yog lub npe lag luam ntawm polyester fiber hauv kuv lub teb chaws. Nws yog fiber ntau-forming polymer ua los ntawm purified terephthalic acid (PTA) los yog dimethyl terephthalate (DMT) thiab ethylene glycol (EG) los ntawm esterification los yog transesterification thiab polycondensation cov tshuaj tiv thaiv - -Polyethylene terephthalate (PET), fiber ntau ua los ntawm spinning thiab post- ua.
Polyester dyeing txheej txheem Yuav dye polyester ntaub
Dyeing tshuab
Stained
Nyob rau hauv qhov kub thiab txias siab dyeing, dyeing txheej txheem ntawm disperse dyes ntawm polyester fibers yuav muab faib ua cov theem hauv qab no:
(1) Cov dyes disperse maj mam mus rau fiber ntau interface nrog cov ndlwg ntawm dyeing tov nyob rau hauv cov tshuaj dyeing. Nyob rau theem no, qhov xwm txheej thiab lub xeev ntawm disperse dyes yog qhov tseem ceeb tsis cuam tshuam. Cov yaj dye molecules thiab cov dye suspended particles yog tib yam nrog cov tshuaj dyeing thiab kev hloov ceev txiav txim siab los ntawm cov kua dej ntws.
(2) Vim hais tias muaj ib tug dynamic ciam txheej uas tsis yooj yim rau ntws ntawm lub fiber, thaum disperse dye nkag mus rau hauv lub dynamic ciam teb txheej thiab mus txog lub fiber interface, nws tsuas yog tso siab rau nws tus kheej diffusion mus rau lub fiber. Kev hloov ceev ntawm theem no tsis yog tsuas yog cuam tshuam nrog tus nqi ntws ntawm cov tshuaj, tab sis kuj tseem cuam tshuam rau qhov nrawm nrawm ntawm cov xim disperse. Yog li ntawd, cov yaj dye molecules diffuse sai npaum li qhov kev ncua thiab aggregates. Lub solubility thiab dispersion lub xeev ntawm disperse dye cuam tshuam rau kev hloov ceev ntawm theem no. Muaj kev cuam tshuam ntau dua.
(3) Thaum cov xim disperse nyob ze rau ntawm fiber ntau interface thiab lub zog molecular ntawm lawv loj txaus, disperse dye yog sai sai adsorbed ntawm fiber ntau. Kev hloov ceev ntawm theem no yog txiav txim siab los ntawm cov qauv thiab cov khoom ntawm cov fibers thiab dyes molecules, thiab tseem muaj feem xyuam rau qhov xwm txheej ntawm kev daws teeb meem. Ntawm lawv, solubility thiab dispersion lub xeev ntawm cov dye muaj kev cuam tshuam ntau dua. Qhov siab dua qhov solubility ntawm cov dye thiab ntau dua kev sib cuam tshuam ntawm cov dye molecule thiab fiber ntau, lub adsorption ceev ceev.
(4) Tom qab cov dyes disperse yog adsorbed rau ntawm fiber ntau, qhov sib txawv ntawm qhov sib txawv los yog cov dyes sab hauv thiab sab nrauv dye chemical txoj hauj lwm sib txawv tshwm sim nyob rau hauv fiber, thiab cov xim yuav diffuse rau hauv fiber. Lub diffusion ceev ntawm no yog txiav txim siab los ntawm fiber ntau chemistry thiab microstructure, nrog rau cov xim molecules. Cov qauv thiab cov concentration yog cuam tshuam. Cov fiber ntau muaj cov ntsiab lus siab dua ntawm cov cheeb tsam amorphous, qhov pores loj lossis ntau qhov ntim dawb, cov xim muaj kuab heev, thiab nrawm nrawm. Yog li ntawd, qhov dye diffusion tus nqi ntawm cov theem no yog ncaj qha ntsig txog cov degree ntawm o los yog plasticization ntawm fiber ntau thiab cov concentration ntawm disperse dye nyob rau hauv fiber. . Lub degree ntawm o los yog plasticization yog siab, thiab cov concentration ntawm disperse dye nyob rau hauv lub txheej txheej ntawm fiber yog siab, thiab lub diffusion yog ceev.
Nws tuaj yeem pom los ntawm cov saum toj no tias qhov ceev dyeing tsis yog tsuas yog txiav txim siab los ntawm cov qauv ntawm cov dyeing thiab fiber, tab sis kuj muaj feem xyuam rau cov solubility ntawm cov dyeing nyob rau hauv cov tshuaj thiab cov degree ntawm o los yog plasticization ntawm fiber thaum dyeing.
Polyester fiber yog hydrophobic hluavtaws fiber. Cov qauv molecular ntawm polyester tsis muaj cov pab pawg ua haujlwm uas tuaj yeem khi nrog cov xim zoo li cellulose lossis protein fibers. Polyester molecules yog txheej txheem nruj, thiab tsuas muaj cov voids me me hauv fiber ntau. Thaum nws qis, lub molecular thermal zog hloov nws txoj hauj lwm mus rau ib qho me me. Nyob rau hauv cov huab cua ntub, polyester fiber yuav tsis ua rau kom qhov sib txawv los ntawm nruj o zoo li paj rwb fiber, thiab nws yog ib qho nyuaj rau dye molecules rau nkag mus rau hauv lub fiber. Yog li ntawd, nce qib ntawm plasticization ntawm fiber ntau yuav pab txoj kev dyeing. Tsis tas li ntawd, solubility ntawm disperse dyes nyob rau hauv dej yog tsawg heev, thiab cov dyes nyob rau hauv lub dyeing tov yuav tsum tau dispersed nyob rau hauv lub dyeing da dej nyob rau hauv ncua kev kawm ntawv los ntawm ib tug loj npaum li cas ntawm dispersant. Thaum dyeing polyester fiber, thiaj li yuav ua tau zoo dyeing nyhuv, nws yog feem ntau yuav tsum tau ntxiv ib tug npaum li cas ntawm dyeing auxiliaries. Cov haujlwm ntawm cov dyeing auxiliaries nyob rau hauv cov txheej txheem dyeing yog multifaceted, feem ntau suav nrog:
(1) Tsim nyog nce lub solubility ntawm disperse dyes;
(2) Txhawb cov adsorption ntawm disperse dyes ntawm fiber ntau;
(3) Plasticize cov fiber ntau los yog nce qib ntawm o kom ceev cov diffusion ntawm disperse dyes nyob rau hauv lub fiber;
(4) Txhim kho qhov dispersion stability ntawm cov xim.
Feem ntau, cov auxiliaries siv nyob rau hauv high-tamp thiab high-pressure dyeing ntawm polyester fibers muaj ib tug cab kuj uas plasticizes lub fiber, ib tug surfactant uas solubilizes disperse dyes los yog stabilizes lub dye suspension, thiab lwm yam. Dyeing auxiliaries polyester fiber dyeing plays lub luag haujlwm tseem ceeb heev.
counterstain
Polyester fibers thiab filament fabrics muaj zog hydrophobicity. Cov dyes ib txwm thiab dyeing txoj kev tsis tuaj yeem dyed, thiab lawv tsuas tuaj yeem dyed nrog disperse dyes. Txawm li cas los xij, tag nrho cov txheej txheem ntawm xws li dyeing tsuas yog ua tiav nyob rau hauv qhov kub thiab txias.