Raws li ib tug multifunctional chemical raw khoom,sulfamic acidplays lub luag haujlwm tseem ceeb hauv kev lag luam dyeing. Nws cov khoom siv tshuaj tshwj xeeb ua rau nws siv dav hauv dye synthesis thiab dyeing txheej txheem. Nws tuaj yeem tsis tsuas yog siv los ua ib qho kev pabcuam catalyst los txhim kho kev ua haujlwm ntawm dye synthesis, tab sis kuj tuaj yeem siv los kho cov pH tus nqi ntawm cov txheej txheem dyeing kom ua kom zoo dua cov dye uptake thiab xim ceev. Kab lus no tshawb txog lub luag haujlwm tseem ceeb ntawm sulfamic acid ua haujlwm hauv kev tsim cov dyeing thiab nws cov txiaj ntsig rau kev lag luam.
1. Tshem tawm cov nitrite ntau dhau
Hauv kev sib xyaw dyeing, diazotization cov tshuaj tiv thaiv yog ib kauj ruam tseem ceeb hauv kev tsim cov azo dyes. Cov tshuaj tiv thaiv feem ntau siv sodium nitrite thiab hydrochloric acid los tsim nitrous acid, uas reacts nrog aromatic amines los tsim diazonium ntsev. Txawm li cas los xij, yog tias ntau tshaj nitrite tsis raug kho raws sijhawm, nws yuav ua rau ib puag ncig muaj kuab paug, thiab ntau tshaj nitrite tuaj yeem cuam tshuam nrog cov xim molecules, cuam tshuam rau xim thiab lub teeb ruaj khov ntawm cov xim. Yog li ntawd, aminosulfonic acid yog dav siv nyob rau hauv kev lag luam dyeing raws li ib tug npaum thiab nyab xeeb nitrite tshem tawm. Lub ntsiab lus teb yog raws li nram no:
NaNO₂ + H₃NSO₃ → N₂ + NaHSO₄ + H₂O
Aminosulfonic acidreacts sai sai nrog nitrite thiab tuaj yeem hloov cov nitrite ntau dhau mus rau cov pa roj nitrogen tsis muaj teeb meem.
- Cov ntawv thov tshwj xeeb
Tom qab kho diazotization cov tshuaj tiv thaiv: Tom qab cov tshuaj tiv thaiv diazotization tiav, ntxiv cov tshuaj aminosulfonic acid uas tsim nyog thiab do cov tshuaj tiv thaiv rau lub sijhawm kom tshem tawm cov nitrite ntau dhau.
Dye intermediate purification: Nyob rau hauv cov txheej txheem ntawm dye intermediates, aminosulfonic acid yuav siv tau los tshem tawm cov seem nitrite thiab txhim kho cov purity ntawm cov khoom.
Kev kho dej khib nyiab: Rau cov dej khib nyiab uas muaj nitrite, aminosulfonic acid tuaj yeem siv los kho kom txo cov nitrite concentration hauv cov dej khib nyiab thiab txo cov pa phem rau ib puag ncig.
2. Stabilization ntawm Dye Solutions
Hauv kev lag luam dyeing, kev ruaj ntseg ntawm cov tshuaj zas xim yog qhov tseem ceeb rau kev ua kom cov xim zoo ib yam thiab zoo ib yam. Sulfamic acid ua raws li tus neeg sawv cev stabilizing, tiv thaiv hydrolysis ntxov ntxov thiab degradation ntawm dye molecules thaum khaws cia thiab siv. Cov yam ntxwv no tseem ceeb tshwj xeeb tshaj yog nyob rau hauv reactive dyes, qhov uas tswj cov tshuaj lom neeg ncaj ncees yog qhov tseem ceeb rau kev ua tiav cov xim vibrant thiab kav ntev.
3. pH tswj
Kev ua tau zoo ntawm ntau cov dyes nyob ntawm kev tswj hwm qib pH. Sulfamic acid, paub txog nws cov acidity me me, ua hauj lwm raws li pH adjuster hauv da dej dye. Los ntawm kev tswj cov pH kom meej, nws ua kom pom cov xwm txheej zoo rau dye fixation rau fibers, txhim kho tag nrho cov dyeing efficiency thiab txo qhov kev pheej hmoo ntawm cov xim tsis sib xws los yog tsis xws luag.
4. Descaling thiab ntxuav cov khoom siv zas xim
Dye ntau lawm thiab daim ntawv thov feem ntau ua rau tsub zuj zuj ntawm scale thiab residues nyob rau hauv cov khoom. Sulfamic acid lub zog descaling zog ua rau nws yog ib tug zoo heev tu tus neeg saib xyuas rau tshem tawm cov deposits tsis ua puas lub machinery. Kev tu tsis tu ncua nrog sulfamic acid tsis tsuas yog txhim kho cov cuab yeej siv lub neej tab sis kuj ua kom cov txheej txheem dyeing tseem tsis muaj paug, ua rau cov khoom zoo dua.
5. Txhim kho Dyeing Zoo ntawm Fibers
Sulfamic acid txhim khu kev nkag mus thiab kho cov dyes ntawm fibers xws li paj rwb, ntaub plaub, thiab cov khoom siv hluavtaws. Los ntawm kev tsim kom muaj ib puag ncig acidic, nws ua kom zoo dua nqus thiab sib txuas ntawm cov xim molecules rau fiber ntau, ua rau cov xim muaj zog dua thiab ruaj khov. Qhov no yog tshwj xeeb tshaj yog pab tau nyob rau hauv textile kev lag luam uas yuav tsum tau high-zoo finishes.
Sulfamic acid lub luag haujlwm hauv kev lag luam dyeing yog ntau yam, nthuav tawm los ntawm kev ruaj ntseg dye cov kev daws teeb meem los txhim kho cov xim zoo nkauj, cov khoom siv tu, thiab kho cov dej khib nyiab. Nws cov khoom tshwj xeeb thiab cov yam ntxwv zoo ib puag ncig ua rau nws muaj txiaj ntsig zoo rau cov tuam txhab nrhiav kev ua haujlwm tau zoo thiab kev ruaj khov.
Post lub sij hawm: Dec-31-2024