Feem ntau ntawm cov xim ntuj yog muab los ntawm cov nroj tsuag: cag, berries, tawv ntoo, nplooj, ntoo, fungi thiab lichens. Nyob rau hauv lub xyoo pua 21st, feem ntau dyes yog hluavtaws, piv txwv li, yog tib neeg tsim los ntawm petrochemicals.
lub teb chaws twg yog hluavtaws dye los ntawm?
Los ntawm kev tshawb fawb thiab kev txhim kho ntxiv, thee tar tau tshawb pom los ua kom muaj txiaj ntsig zoo dua. Los ntawm 1900, ntau tshaj 50 lub tebchaw tau raug cais tawm ntawm cov thee tar, feem ntau yog siv rau kev lag luam tshuaj German. Kev lag luam hluavtaws dye tau ruaj khov nyob rau hauv Lub Tebchaws Yelemees hauv xyoo 1914.
tshuaj dyes tuaj qhov twg?
Synthetic dyes yog tsim los ntawm organic molecules. Ua ntej hluavtaws dyes tau pom nyob rau hauv 1856, dyestuffs tau tsim los ntawm tej yam ntuj tso khoom xws li paj, cag, zaub, kab, minerals, ntoo, thiab mollusks.
Thaum twg dyeing invented?
Thawj sau tseg ntawm cov ntaub dyeing hnub tag nrho rov qab mus rau 2600 BC. Keeb kwm, dyes tau ua nrog cov xim ntuj sib xyaw nrog dej thiab roj siv los kho cov tawv nqaij, hniav nyiaj hniav kub thiab khaub ncaws. Tom qab ntawd, cov xim ntuj tau siv rau hauv qhov tsua hauv qhov chaw xws li Spain. Niaj hnub no, 90% ntawm cov khaub ncaws yog dyed synthetically.
dyestuffs siv rau dab tsi?
Dye, tshuaj siv muab xim rau textiles, ntawv, tawv, thiab lwm yam ntaub ntawvxws li cov xim tsis tuaj yeem hloov pauv los ntawm kev ntxuav, cua sov, lub teeb, lossis lwm yam.uas cov khoom yuav raug nthuav tawm.
