Cov yam ntxwv ntawm disperse dyes:
Tsis zoo li ntau lwm hom dyes, disperse dyes yog dej-soluble ntau dua li lwm yam dyes xws li acid dyes. Yog li ntawd, disperse dyes yog feem ntau siv nyob rau hauv dyeing da dej daws.Tamol NNua haujlwm zoo tshaj plaws thaum cov txheej txheem dyeing yog nqa tawm ntawm qhov kub thiab txias. Tshwj xeeb, cov kev daws teeb meem nyob ib puag ncig 120 ° C txog 130 ° C muab qhov ua tau zoo tshaj plaws rau kev tawg dyes, ua rau lawv sib npaug ntau dua thiab pom qhov muag, thaumTamol NNtej zaum yuav ua rau cov xim tsis sib xws thiab tsis tshua muaj xim ntawm qhov kub thiab txias.
Dab tsi yog kev siv cov dyes disperse?Tamol NN
Vim tias lawv cov khoom siv tshuaj lom neeg thiab cov cwj pwm piav qhia saum toj no, disperse dyes feem ntau yog siv los zas cov hluavtaws fibers, xws li polyester, nylon, acrylic, thiab acetate. Feem ntau cov ntaub ntawv ntawm polyester yog hydrophobic thiab tsis muaj ionic zog, ua rau lawv yuav luag tsis yooj yim rau xim nrog lwm yam tshaj li disperse dyes.
Tsis tas li ntawd, polyester fibers tsis nthuav dav ntawm qhov kub thiab txias txawm tias thaum muab tso rau hauv da dej zas xim, ua rau nws nyuaj rau dye molecules los cuam tshuam nrog cov khoom. Txawm tias kub kub (100 ° C), dyeing ntawm polyester muaj teeb meem.
Yog li ntawd, thaum dyeing polyester, disperse dyes yog siv nyob rau hauv dyeing da dej tov ntawm kub 20 mus rau 30 degrees siab tshaj lub boiling point ntawm dyeing da dej tov. Disperse dyes paub tias tswj lawv cov molecular kev ncaj ncees ntawm qhov kub thiab txias uas yuav tsum tau rau xim polyesters. Rau tib yam vim li cas disperse dyes yog siv los zas polyesters, lawv kuj siv los dye lwm yam khoom uas tsis yog-ionic hluavtaws. Lub fact tias disperse dyes tsis muaj cationic los yog anionic nyiam yog tej zaum cov feem ntau categorizable khoom ntawm disperse dyes.
Disperse dyes kuj tseem siv tau rau hauv cov resins thiab plastics rau saum npoo thiab xim xim.
Post lub sij hawm: May-30-2022