Koj Paub Dab Tsi Txog Sulfur Dyes (1)?

sulfur dyes yog dyes uas yaj nyob rau hauv alkali sulfur. Lawv tsuas yog siv rau dyeing paj rwb fibers thiab tuaj yeem siv rau paj rwb / vitamin blended fabrics. Tus nqi qis, cov zas xim feem ntau tuaj yeem ntxuav thiab ceev, tab sis cov xim tsis ci txaus. Feem ntau siv ntau yam yogSulfur Blue 7,Sulfur Liab 14 Sulfur Dub Bluishandyog li ntawd. Soluble sulfur dyes tam sim no muaj. Ib qho zas xim tsim los ntawm vulcanization cov tshuaj tiv thaiv ntawm amines, phenols, los yog nitro compounds ntawm aromatic hydrocarbons nrog sulfur los yog sodium polysulphur,

peculiarity

sulfur dyes yog insoluble nyob rau hauv dej, thiab sodium sulfur los yog lwm yam uas txo tus neeg sawv cev yog siv los txo cov dyes rau soluble leucochromes. Nws muaj affinity rau fiber ntau thiab stains lub fiber, thiab ces rov qab nws insoluble lub xeev los ntawm oxidation thiab fixation ntawm fiber. Yog li sulfur dye kuj yog VAT dye. Vulcanized dyes tuaj yeem siv rau dyeing paj rwb, hemp, viscose thiab lwm yam fibers, nws cov txheej txheem tsim yog yooj yim, tsis tshua muaj nqi, tuaj yeem dyed monochrome, tab sis kuj tuaj yeem ua xim sib xyaw, zoo yoog rau hnub ci, tsis yooj yim rau hnav. Chromatographic tsis muaj xim liab, ntshav, tsaus xim, haum rau dyeing muaj zog xim.

xaiv

Raws li qhov sib txawv dyeing tej yam kev mob, sulfur dyes yuav muab faib ua sulfur dyes nrog sodium sulfur li txo tus neeg sawv cev thiab sulfur VAT dyes nrog sodium disulfite raws li txo tus neeg sawv cev. Yuav kom siv tau yooj yim, pawg sulfonic acid yog hloov nrog sodium metabisulfite lossis sodium formaldehyde bisulfite (ib lub npe) kom tau cov dej-soluble sulfur dye, uas tuaj yeem siv ncaj qha rau dyeing yam tsis muaj tus neeg sawv cev txo.

(1) sulfur dyes siv sodium sulfur ua tus neeg sawv cev txo qis;

(2) sulfur txo dyes (tseem hu ua Haichang dyes) nrog kev tuav pov hwm hmoov raws li tus neeg sawv cev txo;

(3) Cov kua sulfur dye yog ib yam tshiab ntawm sulfur dye tsim thiab tsim kom yooj yim ua.

Kev siv cov dyes zoo ib yam li cov xim VAT uas muaj kuab heev, uas tuaj yeem diluted ncaj qha nrog dej hauv kev faib ua feem rau kev teeb tsa, tsis ntxiv cov tshuaj txo qis, thiab qee qhov sodium sulfur yuav tsum tau ntxiv thaum tsuas yog ib feem ntawm cov xim yog lub teeb. Hom dye chromatography no kuj dav, muaj xim liab, ntshav xim av, Hu ntsuab.

Muab yug rau

Muaj ob txoj hauv kev tsim cov sulfur dyes: ① ci txoj kev, cov khoom siv raw khoom muaj ntxhiab amines, phenols los yog nitro teeb meem thiab leej faj los yog sodium polysulphur ntawm kub kub ci, thiaj li yuav ua daj, txiv kab ntxwv, xim av sulfur dyes. ② Boiling txoj kev, cov amines, phenols los yog nitro tshuaj ntawm raw cov ntaub ntawv uas muaj ntxhiab hydrocarbons thiab sodium polysulphur yog rhuab thiab boiled nyob rau hauv dej los yog organic solvents kom tau dub, xiav thiab ntsuab vulcanization dyeing.

xwm

1, zoo ib yam li dyes ncaj qha

(1) ntsev tuaj yeem siv los txhawb dyeing.

(2), cationic xim kho tus neeg saib xyuas thiab hlau ntsev xim kho tus neeg saib xyuas kom txhim kho ceev.

2, zoo ib yam li VAT dyes

(1), cov dye yuav tsum tau txo kom leachite nrog ib tug txo tus neeg sawv cev rau dye lub fiber thiab oxidize ntawm fiber. Es tsis txhob muaj zog txo tus neeg sawv cev, sodium sulfur yog ib qho tsis muaj zog txo tus neeg sawv cev. Txawm li cas los xij, cov cuab yeej ncaj qha ntawm leaches rau fibers tom qab txo qis qis dua li VAT dyes, thiab qhov nyiam ntawm cov xim sib xyaw yog ntau dua.

(2) Cov tshuaj tiv thaiv nrog cov kua qaub tuaj yeem tsim cov roj H2S, thiab cov tshuaj tiv thaiv nrog txhuas acetate tuaj yeem tsim dub txhuas sulfur nag lossis daus.

3, qhov kub thiab txias tuaj yeem siv los txhim kho qhov sib txawv ntawm cov dyes thiab txhim kho qhov kev nkag mus.