Cov xim dyes ua li cas?
Cov xim dyes ua li cas?

Video: Cov xim dyes ua li cas?

Video: Cov xim dyes ua li cas?
Video: Ua li cas by DeathRhyme 2024, Kaum ib hlis
Anonim

Feem ntau ntawm ntuj dyes Nws yog muab los ntawm cov nroj tsuag: keeb kwm, berries, bark, nplooj, ntoo, fungi thiab lichens. Feem ntau dyes yog hluavtaws, i.e., yog txiv neej- ua los ntawm petrochemicals.

Raws li txoj cai, Dye tsim li cas?

Ntuj dyes yog ua los ntawm cov nroj tsuag thiab cov zaub mov, ces yog ua ke nrog starches thiab seaweed kom paub tseeb tias nws yuav siv sij hawm rau cov khoom. Synthetic dyes feem ntau yog ua los ntawm thee tar thiab roj av. Lawv sib txawv heev vim hais tias cov ntaub ntawv sib txawv xav tau cov tshuaj sib txawv los ua tus xim ua raws.

Tom qab ntawd, lo lus nug yog, vim li cas cov organic dyes muaj xim zoo nkauj? 4.6. Organic dyes feem ntau brighter thiab muaj zog tshaj inorganic colorants. Tsis zoo li feem ntau organic cov khoom xyaw, dyes muaj xim vim lawv (Abrahart, 1977): 1. nqus lub teeb nyob rau hauv qhov pom spectrum (400–700 nm);

Kuj paub, vim li cas cov dyes muaj xim?

Cov xim ntawm xim yog tshwm sim los ntawm absorbance ntawm electromagnetic hluav taws xob. Yog hais tias ib feem ntawm qhov nkhaus no yog nyob rau hauv qhov pom, qhov xim yuav tshwm xim . Lub teeb dawb yog qhov sib xyaw ntawm wavelengths. Ib txhia ntawm no muaj kev sib raug zoo rau lub zog nyob rau hauv lub delocalised electron huab ntawm lub xim molecule.

Cov dyes thiab pigments tuaj qhov twg?

Lawv yog cov khoom siv tsis sib xws uas yuav tsum tau muab sib xyaw nrog cov hlua khi lossis cov tsheb thauj mus rau hauv lub substrate. Pigments feem ntau tau los ntawm minerals, tab sis lawv kuj yuav ua tau synthetically. Pigments yog siv nyob rau hauv cov xim, inks, plastics, fabrics, tshuaj pleev ib ce, thiab zaub mov, rau npe ob peb yam piv txwv.

Pom zoo: