Hauv kev tshawb fawb dyeing thiab engineering xyaum, ntau pawg ntawm dyes qhia qhov sib txawv ntawm cov qauv tshuaj, xim kev tsim kho, siv cov substrates, thiab kev ua haujlwm. Kev nthuav qhia qhov sib txawv no pab ua kom tiav cov kev xaiv meej, kev ua kom zoo dua qub, thiab txhim kho cov khoom zoo hauv cov txheej txheem tsim khoom thiab kev thov, thiab tseem muab cov txheej txheem meej meej rau kev sib koom tes thiab kev tsim kho tshiab.
Los ntawm txoj kev xav ntawm cov qauv tshuaj thiab cov xim kev loj hlob mechanism, qhov sib txawv ntawm dyes yog feem ntau xav txog nyob rau hauv hom chromophore thiab cov yam ntxwv ntawm lawv conjugated systems. Azo dyes, tus cwj pwm los ntawm -N=N- chromophores, muaj cov qauv molecular hloov tau yooj yim, yooj yim tsim ntau yam xim xws li daj, txiv kab ntxwv, liab, thiab xim av. Lawv txoj kev sib txawv hluavtaws ua rau lawv muaj ntau yam hauv kev siv hauv kev lag luam. Anthraquinone dyes, nrog rau lawv cov pob txha pob txha pob txha pob txha, dav hauv hluav taws xob hloov pauv lub zog, cov xim muaj zog, thiab lub teeb zoo heev thiab ntxuav, feem ntau yog siv rau hauv siab -kawg textiles thiab cov khoom tshwj xeeb. Phthalocyanine dyes, nrog rau lawv cov hlau-coated cores, ua kom muaj xim xiav thiab ntsuab xim zoo nkauj, nthuav tawm cov huab cua zoo thiab tiv thaiv tshav kub, thiab nquag pom hauv cov yas, inks, thiab automotive coatings. Indigo dyes, muab tau los ntawm ntuj indigo thiab nws cov derivatives, muaj cov xim sib sib zog nqus thiab ib qho tshwj xeeb vintage xav, feem ntau siv hauv cov khoom lag luam iconic xws li denim.
Qhov sib txawv ntawm hydrophilicity thiab reactivity yog qhov tseem ceeb tshwj xeeb tshaj yog thaum categorizing dyes los ntawm lawv cov substrate thiab bonding txoj kev. Reactive dyes muaj cov pab pawg nquag uas tuaj yeem tsim cov ntawv cog lus nrog cellulose, proteins, thiab lwm yam, nthuav tawm cov xim nrawm thiab tshwj xeeb yog siv rau dyeing thiab luam ntawv hydrophilic fibers xws li paj rwb, linen, thiab txhob lo lo ntxhuav. Cov kua qaub dyes muaj nyob rau hauv daim ntawv anionic nyob rau hauv aqueous daws, muaj affinity zoo rau cov amino- muaj substrates xws li ntaub plaub, txhob lo lo ntxhuav, thiab nylon, uas ua rau ci xim. Direct dyes tuaj yeem siv ncaj qha rau cov fibers xws li paj rwb thiab viscose yam tsis muaj mordant, ua kom cov txheej txheem yooj yim tab sis muab kev txwv tsis pub ntxuav. Disperse dyes yog hydrophobic me me molecules uas xav tau qhov kub thiab txias los yog cov cab kuj nkag mus rau hauv hydrophobic fibers xws li polyester, ua rau lawv cov qeb tseem ceeb rau dyeing hluavtaws fibers. Basic dyes thiab hnyav dyes yog haum rau colouring polyacrylonitrile fibers thiab non-aqueous media, ntsig txog, nthuav daim ntawv thov ciam teb ntawm dyes.
Qhov txawv ntawm keeb kwm kuj yog ib qho tseem ceeb sib txawv. Ntuj dyes feem ntau yog muab los ntawm cov nroj tsuag, tsiaj txhu, los yog minerals, muab cov xim mos thiab zoo ecological compatibility, tab sis lawv cov chromatogram yog txwv, extraction tus nqi tsawg, thiab huab cua kuj tsis muaj zog, ua rau lawv feem ntau siv rau siab - kawg kev cai los yog eco- phooj ywg textiles. Txij li thaum lawv tuaj txog, cov xim hluavtaws tau ua tus thawj coj hauv kev lag luam vim lawv cov chromatogram ua tiav, kev ua haujlwm ruaj khov, thiab tus nqi qis, txhawb nqa loj - nplai xim xav tau ntawm niaj hnub textile thiab kev lag luam tsim khoom.
Tsis tas li ntawd, dyes kuj sib txawv nyob rau hauv ntau pawg ntawm cov xim ceev ceev, leveling zog, thiab ib puag ncig compatibility. Anthraquinone dyes pom zoo lightfastness dua li ib co azo dyes; reactive dyes, vim lawv cov kev sib raug zoo, muaj kev ntxuav ntau dua -tiv taus dua cov dyes ncaj qha; Niaj hnub nimno hluavtaws dyes, txhim kho los ntawm molecular tsim thiab cov txheej txheem ntsuab, yog qhov zoo tshaj plaws rau ntau yam ua ntej ntawm cov tshuaj toxicity thiab biodegradability, ua tau raws li cov kev cai nruj thiab kev lag luam xav tau.
Zuag qhia tag nrho, qhov sib txawv ntawm cov dyes encompass ntau qhov ntev, nrog rau cov qauv tshuaj, kev tsim cov xim, substrate compatibility, cov cwj pwm, thiab cov ntsuas kev ua tau zoo. Cov kev sib txawv no txiav txim siab txog lawv qhov kev thov thiab kev txhim kho kev coj ua. Hauv cov ntsiab lus ntawm kev txhim kho kev lag luam thiab kev txhim kho kom ruaj khov, kev txheeb xyuas thiab siv qhov sib txawv ntawm cov dyes yuav muab lub hauv paus ruaj khov rau kev ua tau zoo, meej, thiab cov ntawv siv xim ntsuab.
