Ncaj Grey Dyes
Kev zas xim ncaj yog nyob hauv nruab nrab thiab tsis muaj zog tseem ceeb theem nruab nrab kub kom lub rwj, yam tsis muaj kev pab mordant zas, nws yog nrog cov paj rwb ua ke ntawm kev sib koom ua ke ntawm hydrogen sib txuas ntawm van der Waals quab yuam, mas siv nyob rau hauv fiber, silk, paj rwb, tawv thiab lwm yam kev lag luam, tseem muaj cov ntawv thov hauv papermaking kev lag luam, thiab lwm yam. Nws tuaj yeem faib ua azo, stilbene thiab lwm yam raws li lawv cov qauv.
Cov tsoos ncaj qha muaj cov pab pawg soluble xws li sulfonic acid pawg (-so 3 h) lossis carboxyl pawg (-cooh) tau teeb tsa hauv cov qauv qauv molecular. Lub nplhaib uas muaj ntxhiab zoo nyob hauv tib lub dav hlau, Vim tias nws muaj qhov sib txuam loj rau cov cellulose fiber ntau, xim ncaj qha hauv nruab nrab nruab nrab, xav kom yaj tsis qhuav tsuas yog qhuav dej, tuaj yeem zas xim.
Lub stainer yog nqus mus rau saum npoo los ntawm fiber ntau hauv kev daws, thiab tom qab ntawd txuas ntxiv mus rau thaj tsam amorphous ntawm lub fiber, sib sau hydrogen ua ke nrog cov fiber macromolecules thiab sib txuas nrog van der Waals rog.
Cim npe nrov: ncaj qha zas xim, Tuam Tshoj, tuam ntxhab, cov chaw muag khoom, lub Hoobkas, pheej yig, luv nqi, quotation, tus nqi qis, dawb qauv
