Tus nqi zoo tshaj plaws Vat Brown BR Rau Dyeing polyester-sib xyaw paj rwb ntaub

Cov yam ntxwv tseem ceeb ntawm Vat Brown BR suav nrog:
1.VAT dyes tsis muaj cov dej-soluble pawg, yog li lawv yog insoluble hauv dej.Cov qauv molecular ntawm cov dyes yog loj, lub nplhaib aromatic muaj coplanarity zoo, thiab affinity rau cellulose fibers yog loj.
2.Nws yog tsuas yog siv rau dyeing paj rwb, viscose thiab lwm yam fibers.Txoj kev dyeing feem ntau suav nrog chromophyte dyeing (immersion dyeing) thiab ncua kev dyeing (dov dyeing): dyed fabrics muaj zoo ntub ceev ceev, feem ntau dyes muaj siab ceev rau tshav ntuj, thiab chromatic acid yuav yaj nyob rau hauv alkaline tov thiab adsorbed los ntawm fibers;Lub cev cryptochromic (soluble sodium ntsev ntawm dyes) adsorbed ntawm cov fibers rov qab mus rau lub qub insoluble carbon puag (ligand los yog ketone lub cev) nyob rau hauv kev txiav txim ntawm acids thiab oxidants, thiab yog tsau nyob rau hauv cov fibers.
3.Cov cellulose fibers dyed nrog VAT dyes yog absorbed rau ntawm fiber nto nyob rau hauv daim ntawv ntawm anions los ntawm van der Waals quab yuam thiab hydrogen bond rog ntawm cov fibers, thiab ces diffused mus rau sab hauv ntawm lub fibers.