Sulfur Black Vs Reactive Black: Core Differences
Tso lus
Chemical Class thiab Dyeing Mechanism
Chemical Class: Sulfur Dye(tsim los ntawm fusing aromatic amines, phenols, thiab lwm yam., nrog sulfur / sodium sulfide; complex qauv uas muaj polysulfide bonds).
Dyeing Mechanism:
1. Kev txo qis: Txo kom soluble leuco daim ntawv los ntawm muaj zog alkali (Na₂S), uas adsorbs rau fiber.
2. Oxidation: Cov leuco compound re-oxidizes nyob rau hauv cov huab cua los yog nrog ib tug oxidant rau ib tug insoluble pigment, mechanically trapped nyob rau hauv lub fiber.
Chemical Class: Reactive Dye(dej-soluble dye uas muaj pawg reactive; pawg: monochlorotriazine, vinyl sulfone, thiab lwm yam).
Dyeing Mechanism:
1. Adsorption / Diffusion: Dye anions adsorb thiab diffuse rau hauv cellulose fiber nyob rau hauv ib qho nruab nrab aqueous.
2. Covalent Bonding: Nyob rau hauv alkaline tej yam kev mob, cov dye lub reactive pawg tsim muaj zogcovalent bondsnrog cov pawg hydroxyl (-OH) ntawm fiber.
Kev sib piv tseem ceeb
| Feature | Sulfur Dub | Reactive Dub |
|---|---|---|
| Haum Fibers | Feem ntau yog cellulose fibers(paj rwb, linen, viscose, thiab lwm yam). | Feem ntau yog cellulose fibers; Qee hom tuaj yeem siv rau ntawm cov ntaub plaub / silk (ntawm cov pab pawg sib txawv). |
| Xim yam ntxwv | Sib sib zog nqus, khaus dub, tab sis nrog ib tug reddish los yog yellowish cam khwb cia; tsawg puv, tsis muaj qhov ci / vibrancy. | Vibrant, tag nrho thiab dub; xim cam yog adjustable (xiav-dub, liab-dub, thiab lwm yam); zuag qhia tag nrho brighter thiab ntau vivid. |
| Xim ceev | Zoo ntxuav ceev(insoluble pigment), tab sisnruab nrab mus rau qhov tsis zoo rub nrawm(staining saum npoo). Nruab nrab lightfastness. |
Feem ntau zoo dua thiab sib npaug tag nrho ceev ceev, tshwj xeeb tshaj yog ntub dej nrawm nrawm (nto zas xim tuaj yeem tshem tawm los ntawm xab npum). Zoo lightfastness. |
| Txheej txheem & tuav | Cov txheej txheem ntev, kev siv hluav taws xob siab, yuav tsum muaj kev tswj hwm nruj ntawm kev txo qis thiab oxidation. Kev ua haujlwm ib puag ncig muajhydrogen sulfide tsw. | Cov txheej txheem yooj yim dua, hloov tau yooj yim (txias / sov dyeing ua tau), tswj tau yooj yim dua, huv si ua haujlwm. |
| Tus nqi -Kev ua tau zoo | Tus nqi qis heev, feem ntau kev lag luam dub dye, tshwj xeeb tshaj yog rau siab- ntim, qis- cov khoom siv tsaus nti. | Tus nqi siab dua (xim xim, yuav tsum muaj cov khoom siv hluav taws xob ntau, tsim kom tsawg-txog rau qhov ntxoov ntxoo tob heev). |
| Environmental Impact | Kev txhawj xeeb ib puag ncig tseem ceeb: 1. Effluent muajsiab sulfur, siab COD, nyuaj kho. 2. Muaj peev xwm tso tawm me me ntawmhydrogen sulfidegas. 3. Risk ntawmcia kev sib tw(acid tso tawm ua rau fiber ntau degradation). |
Tus phooj ywg environmentally: 1. Txo cov pa phem hauv cov dej ntws tawm (tsuas yog ntsev thiab tsis kho / hydrolyzed dye). 2. Tsis muaj cov pa phem tso tawm. 3. Tsis muaj teeb meem khaws cia. |
Tej thaj chaw thov
- Tus nqi - cov khoom lag luam tseem ceeb: Denim (tshwj xeeb tshaj yog rau overdyeing tom qab ib txwm indigo), dub paj rwb knits, canvas, workwear fabrics, qis dua - qib paj rwb yarns, thiab lwm yam.
- Tshwj xeeb tshaj yog haum rau fabrics xav tau ib tug "vintage" los yog cov nyhuv dull dub.
- Cov khoom yuav tsum tau ua kom zoo dua qub thiab ib puag ncig tus qauv: Nruab nrab-rau- siab- cov tsoos tsho kawg, cov ntaub hauv tsev (cov ntaub pua tsev, cov phuam da dej), cov khoom siv sab nraum zoov uas xav tau ceev ceev, cov khaub ncaws me nyuam mos, thiab lwm yam.
- Haum rau cov khoom uas xav tau vibrant dub los yog siab ceev ceev hauv qhov sib sib zog nqus ntxoov ntxoo.
