Reactive dyeing yog ib txoj kev nrov ntawm cov xim ntaub uas tau siv dav hauv kev lag luam textile. Cov txheej txheem suav nrog kev siv ntau tus pab cuam uas ua lub luag haujlwm tseem ceeb hauv kev ua tiav cov xim uas xav tau thiab cov nyhuv. Nov yog qee qhov kev pabcuam uas siv rau hauv reactive dyeing:
1. Alkali: Reactive dyes xav tau ib puag ncig alkaline heev rau cov xim kom zoo nrog cov ntaub. Sodium carbonate los yog sodium hydroxide feem ntau yog siv los tswj qhov xav tau alkaline pH.
2. Ntsev: Ntsev yog siv los ua ib qho catalyst hauv cov txheej txheem dyeing. Qhov sib ntxiv ntawm ntsev pab txo cov solubility ntawm cov dyeing nyob rau hauv dej thiab txhim kho nws affinity rau ntaub.
3. Cov tshuaj txo qis: Cov no yog siv los txo cov oxidized daim ntawv ntawm cov xim molecule rau nws daim ntawv leuco. Cov txheej txheem no yog tsim nyog rau cov dye rau daim ntawv cog lus nrog cov ntaub thiab ua tiav qhov siab tshaj plaws xim qhov tob thiab ceev ceev.
4. Anti-foaming agents: Cov no tau ntxiv rau hauv da dej dyeing los tiv thaiv kev ua npuas dej ntau dhau, uas tuaj yeem ua rau tsis sib xws dyeing thiab staining.
5. Sequestering agents: Cov no yog siv los tswj lub hardness ntawm cov dej thiab tiv thaiv kev tsim ntawm mineral deposits, uas yuav cuam tshuam rau cov txheej txheem dyeing.
6. Leveling agents: Cov no yog siv los xyuas kom meej txawm thiab uniform dyeing ntawm cov ntaub. Lawv pab tiv thaiv cov dyeing los ntawm kev xaiv kev sib txuas nrog qee qhov chaw ntawm cov ntaub thiab ua rau cov xim tsis sib xws.
7. Kho cov neeg ua haujlwm: Cov no yog siv los kho cov zas xim rau ntawm cov ntaub thiab txhim kho nws txoj kev nrawm. Lawv kuj pab tiv thaiv los ntshav thiab fading ntawm cov xim thaum lub sij hawm.
Hauv kev xaus, kev siv cov auxiliaries hauv reactive dyeing plays lub luag haujlwm tseem ceeb hauv kev ua tiav cov xim uas xav tau thiab cov nyhuv. Lawv pab xyuas kom meej tias cov dye bonds nrog cov ntaub thiab muab qhov tsim nyog ceev ceev thiab xim qhov tob. Kev siv cov auxiliaries kom zoo tuaj yeem ua rau cov khoom zoo dyed fabrics uas ruaj thiab txaus nyiam.