Acid Dyes

Hermeta Acid Dyes feem ntau siv rau textile ntawm pH qis.Lawv feem ntau yog siv los dye wool, tsis yog paj rwb fabrics.

Acid dyes yog anionic, soluble hauv dej thiab yog siv los ntawm acidic da dej.Cov dyes muaj cov acidic pawg, xws li SO3H thiab COOH thiab yog siv rau ntaub plaub, txhob lo lo ntxhuav thiab nylon thaum ionic daim ntawv cog lus yog tsim los ntawm protonated -NH2 pab pawg neeg fiber thiab acid pawg dye.Zuag qhia tag nrho ntxuav ceev yog tsis zoo txawm hais tias lightfastness yog zoo heev.Raws li zas xim thiab fiber ntau muaj qhov cuam tshuam hluav taws xob, kev tawm tsam thiab kev siv cov kua qaub ntawm cov fibers sai dua;electrolyte ntawm ntau dua concentration yog ntxiv rau retard dye uptake thiab tsim leveled ntxoov.Acid generates cation ntawm fiber ntau thiab kub pab hloov qhov tsis zoo ntawm cov kua qaub nrog anionic dye molecules.