1. Reactive dyes yog dab tsi?
Reactive dyes, tseem hu ua reactive dyes, yog ib hom tshiab ntawm cov dej-soluble dyes uas tau tshwm sim hauv xyoo 1950. Reactive dye molecules muaj cov pab pawg nquag uas tuaj yeem hnov mob nrog hydroxyl pawg hauv cellulose thiab amino pawg hauv cov protein fibers. Thaum dyeing, lawv tsim covalent bonds nrog fibers los ua "dye-fiber" compounds. Reactive dyes muaj cov yam ntxwv ntawm cov xim ci, zoo dyeing uniformity, yooj yim dyeing txoj kev, siab dyeing ceev ceev, tiav xim spectrum thiab tsawg tus nqi. Lawv tsuas yog siv rau dyeing thiab luam ntawv ntawm paj rwb, linen, viscose, txhob lo lo ntxhuav, ntaub plaub thiab lwm yam fibers thiab lawv blended fabrics.
2. Qhov zoo ntawm reactive dyes
Reactive dyes yog tsim los ntawm niam txiv dyes, sib txuas cov pab pawg thiab cov pab pawg nquag, kom lawv tuaj yeem tsim cov ntawv cog lus muaj zog nrog cov fibers thaum siv, thiab muaj cov yam ntxwv uas lwm cov cellulose fiber dyes tsis tuaj yeem sib xws, uas tsim lawv txoj haujlwm raws li lub hom phiaj ntawm txoj kev loj hlob thiab siv cellulose fiber dyes, uas yog prominently reflected nyob rau hauv plaub yam nram qab no:
- Reactive dyes yog ib qho kev xaiv zoo tshaj plaws los hloov cov xim uas txwv tsis pub thiab lwm hom cellulose dyes xws li sulfur dyes, ice dyes thiab vat dyes.
- Reactive dyes tuaj yeem ua tiav qhov nrawm nrawm, tshwj xeeb yog ntub nrawm, nrog cov txheej txheem dyeing kev lag luam thiab kev ua haujlwm yooj yim dyeing.
- Reactive dyes muaj cov xim dav dav, cov xim ci, kev ua haujlwm zoo, thiab muaj zog siv tau. Lawv cov xim thiab kev ua tau zoo yog qhov tseem ceeb raws li kev lag luam cov kev xav tau ntawm fibers thiab khaub ncaws.
- Reactive dyes yog tsim rau kev luam ntawv thiab dyeing xav tau ntawm cov khoom siv cellulose tshiab xws li Lyocell fibers.
3, Qhov tsis zoo ntawm Reactive Dyes
- Kev siv tus nqi tsis siab txaus, feem ntau yog 60% ~ 70%, thiab ntau cov dej phwj tuaj xim yog tsim, chromaticity ntau tshaj li ob peb txhiab zaus, tus nqi COD feem ntau yog 8,000~30,{{5 }} ppm, thiab tus nqi COD ntawm cov dej khib nyiab ntau tshaj 50, 000 ppm.
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- Qee cov xim ceev ceev tsis tuaj yeem ua tau raws li kev lag luam, xws li hws ceev ceev, ntub dej nrawm nrawm, thiab lub teeb nrawm ntawm azo liab dyes thiab azo xiav dyes hauv cov xim teeb.
- Muaj ob peb hom tsaus nti uas tuaj yeem hloov cov khoom siv sulfide sulfide thiab vat dyes.
