Txoj Cai ntawm Stripping

Stripping yog siv cov tshuaj tua kab mob los rhuav tshem cov xim ntawm cov fiber ntau thiab ua rau nws poob xim.
Muaj ob yam tseem ceeb ntawm cov tshuaj tua kab mob. Ib qho yog txo cov stripping agents, uas ua tiav lub hom phiaj ntawm fading lossis decoloring los ntawm kev rhuav tshem cov xim hauv cov qauv molecular ntawm cov xim. Piv txwv li, dyes nrog cov qauv azo muaj ib pab pawg azo. Tej zaum nws yuav raug txo mus rau ib pawg amino thiab poob nws cov xim. Txawm li cas los xij, kev puas tsuaj ntawm tus neeg sawv cev txo qis rau cov xim ntawm cov xim ntawm cov xim yog thim rov qab, yog li cov fading tuaj yeem rov qab los, xws li cov xim ntawm cov qauv anthraquinone. Sodium sulfonate thiab hmoov dawb yog feem ntau siv cov tshuaj tua kab mob. Lwm qhov yog oxidative stripping agents, uas feem ntau siv yog hydrogen peroxide thiab sodium hypochlorite. Hauv qee qhov xwm txheej, oxidants tuaj yeem ua rau muaj kev puas tsuaj rau qee pawg uas tsim cov xim molecular xim, xws li decomposition ntawm azo pawg, oxidation ntawm amino pawg, methylation ntawm hydroxy pawg, thiab sib cais ntawm complex hlau ions. Cov kev hloov pauv tsis hloov pauv no ua rau fading lossis decolorization ntawm cov xim, yog li theoretically, oxidative stripping tus neeg sawv cev tuaj yeem siv rau kev kho kom tiav stripping. Txoj kev no yog tshwj xeeb tshaj yog rau dyes nrog anthraquinone qauv.

Feem ntau dye stripping

2.1 Stripping ntawm reactive dyes

Txhua cov tshuaj pleev xim uas muaj cov hlau ua haujlwm yuav tsum xub muab rhaub rau hauv cov tshuaj ntawm cov hlau polyvalent chelating tus neeg sawv cev (2 g / L EDTA). Tom qab ntawd ntxuav kom huv si nrog dej ua ntej alkaline txo lossis oxidation stripping kho. Qhov ua tiav stripping feem ntau yog kho ntawm qhov kub thiab txias rau 30 feeb hauv alkali thiab sodium hydroxide. Tom qab tev tawm, ntxuav kom huv si. Tom qab ntawd nws yog txias bleached nyob rau hauv sodium hypochlorite tov. Txheej txheem piv txwv:
Piv txwv ntawm kev nruam stripping txheej txheem:
Cov ntaub dyeing → padding txo cov tshuaj (caustic soda 20 g / l, soluene 30 g / l) → 703 txo steamer steaming (100 ℃) → ntxuav → ziab

Piv txwv ntawm dyeing vat peeling txheej txheem:

Cov ntaub tsis muaj xim → reel → 2 dej kub → 2 caustic soda (20g / l) → 8 tev xim (sodium sulfide 15g / l, 60 ℃) 4 dej kub → 2 dej txias scroll → sodium hypochlorite theem bleaching txheej txheem (NaClO 2.5 g / l, stacked rau 45 feeb).

2.2 Stripping ntawm sulfur dyes

Sulfur dye-dyed fabrics feem ntau yog kho los ntawm kev kho lawv nyob rau hauv ib qho kev daws teeb meem ntawm kev txo tus neeg sawv cev (6 g / L tag nrho-lub zog sodium sulfide) ntawm qhov kub siab tshaj plaws kom ua tiav ib feem ntawm cov ntaub dyed ua ntej rov dyeing. xim. Hauv cov xwm txheej hnyav, sodium hypochlorite lossis sodium hypochlorite yuav tsum tau siv.
Txheej txheem piv txwv
Lub teeb xim piv txwv:
Rau hauv daim ntaub → soaking ntau dua thiab dov (sodium hypochlorite 5-6 grams liters, 50 ℃) → 703 steamer (2 feeb) → dej puv → ziab.

Tsaus piv txwv:
Xim tsis zoo → dov oxalic acid (15 g / l ntawm 40 ° C) → ziab → dov sodium hypochlorite (6 g / l, 30 ° C rau 15 vib nas this) → ntxuav thiab ziab kom qhuav

Piv txwv ntawm cov txheej txheem batch:
55% crystalline sodium sulfide: 5-10 g / l; soda tshauv: 2-5 g / l (los yog 36 ° BéNaOH 2-5 ml / l);
Kub 80-100, sij hawm 15-30, da dej piv 1:30-40.

2.3 Tshem tawm cov kua qaub dyes

Boil rau 30 mus rau 45 feeb nrog dej ammonia (2O rau 30 g / L) thiab anionic wetting agent (1 mus rau 2 g / L). Ua ntej kho ammonia, siv sodium sulfonate (10 mus rau 20 g / L) ntawm 70 ° C los pab ua kom tiav tev. Thaum kawg, txoj kev oxidation stripping kuj siv tau.
Nyob rau hauv acidic tej yam kev mob, ntxiv ib tug tshwj xeeb surfactant kuj muaj ib tug zoo peeling nyhuv. Kuj tseem muaj cov uas siv cov kab mob alkaline kom tshem tawm cov xim.

Txheej txheem piv txwv:
Piv txwv ntawm tiag tiag silk tev txheej txheem:

Txo, stripping thiab bleaching (soda tshauv 1g / L, tiaj tus ntxiv ntawm O 2g / L, sulfur hmoov 2-3g / L, kub 60 ℃, lub sij hawm 30-45min, da dej piv 1:30) → pre-media kho (ferrous) sulfate heptahydrate) 10g / L, 50% hypophosphorous acid 2g / L, formic acid kho pH 3-3.5, 80 ° C rau 60min) → yaug (80 ° C ntxuav rau 20min) → oxidation stripping thiab bleaching (35% hydrogen peroxide 10mL /L, pentacrystalline sodium silicate 3-5g / L, kub 70-8O ℃, sij hawm 45-90min, pH nqi 8-10) → huv

Piv txwv ntawm wool stripping txheej txheem:

Nifanidin AN: 4; Oxalic acid 2%; Tshav kub kom npau npau li 30 feeb thiab khaws cia ntawm qhov kub kub rau 20-30 feeb; ces ntxuav nws.

Piv txwv ntawm cov txheej txheem nylon stripping:

36 ° BéNaOH: 1% -3%; tiaj tus ntxiv O: 15% -20%; cov khoom siv hluavtaws: 5% -8%; da dej piv: 1:25-1:30; kub: 98-100 ° C; Lub sij hawm: 20-30min (kom txog rau thaum tag nrho cov decolorization).

Tom qab tag nrho cov xim yog tev tawm, qhov kub thiab txias yog maj mam txo, thiab ntxuav kom huv si nrog dej, thiab tom qab ntawd cov alkali seem ntawm nylon yog tag nrho neutralized nrog 0.5mL / L acetic acid ntawm 30 ° C rau 10min, thiab ces ntxuav. nrog dej.

2.4 Tshem tawm vat dyes

Feem ntau, nyob rau hauv ib qho kev sib xyaw ntawm sodium hydroxide thiab sodium hydroxide, cov ntaub dye raug txo dua ntawm qhov kub thiab txias. Qee zaum nws yuav tsum tau ntxiv cov tshuaj polyvinylpyrrolidine, xws li BASF's Albigen A.

Piv txwv ntawm kev nruam stripping txheej txheem:

Cov ntaub dyeing → padding txo cov tshuaj (caustic soda 20 g / l, soluene 30 g / l) → 703 txo steamer steaming (100 ℃) → ntxuav → ziab

Piv txwv ntawm kev sib tshuam tev txheej txheem:

Pingping ntxiv O: 2-4g / L; 36 ° BéNaOH: 12-15ml / L; Sodium hydroxide: 5-6g / L;

Thaum lub sij hawm stripping kho, qhov kub yog 70-80 ℃, lub sij hawm yog 30-60 feeb, thiab da dej piv yog 1: 30-40.

2.5 Stripping ntawm disperse dyes

Cov hauv qab no feem ntau yog siv los strip disperse dyes ntawm polyester:

Txoj Kev 1: Sodium formaldehyde sulfoxylate thiab cov cab kuj, kho ntawm 100 ° C thiab pH4-5; Cov nyhuv kho yog qhov tseem ceeb ntawm 130 ° C.

Txoj Kev 2: Sodium chlorite thiab formic acid yog ua tiav ntawm 100 ° C thiab pH 3.5.

Qhov txiaj ntsig zoo tshaj plaws yog thawj qhov kev kho mob tom qab kev kho thib ob. Kom deb li deb tau tshaj-dye dub tom qab kho.

2.6 Tshem tawm cationic dyes

Kev stripping ntawm disperse dyes ntawm polyester feem ntau siv cov hauv qab no:

Nyob rau hauv ib da dej uas muaj 5 ml / liter monoethanolamine thiab 5 g / liter sodium chloride, kho ntawm boiling point rau 1 teev. Tom qab ntawd ntxuav nws, thiab tom qab ntawd tshuaj dawb hauv ib da dej uas muaj 5 ml / L sodium hypochlorite (150 g / L muaj chlorine), 5 g / L sodium nitrate (corrosion inhibitor), thiab kho cov pH rau 4 txog 4.5 nrog acidic acid. 30 feeb. Thaum kawg, cov ntaub yog kho nrog sodium chloride sulfite (3 g / L) ntawm 60 ° C rau 15 feeb, lossis 1-1.5 g / L ntawm sodium hydroxide ntawm 85 ° C rau 20 mus rau 30 feeb. Thiab thaum kawg ntxuav nws.

Siv cov tshuaj detergent (0.5 mus rau 1 g / L) thiab cov kua dej npau npau ntawm acetic acid los kho cov ntaub dyed ntawm pH 4 rau 1-2 teev kuj tuaj yeem ua tiav ib feem ntawm kev tshem tawm.
Txheej txheem piv txwv:
Thov xa mus rau 5.1 acrylic knitted npuag xim ua piv txwv.

2.7 Stripping ntawm insoluble azo dyes

5 mus rau 10 ml / liter ntawm 38 ° Bé caustic soda, 1 mus rau 2 ml / liter ntawm tshav kub-ruaj khov dispersant, thiab 3 mus rau 5 g / liter ntawm sodium hydroxide, ntxiv rau 0.5 mus rau 1 g / liter ntawm anthraquinone hmoov. Yog tias muaj sodium hydroxide txaus thiab dej qab zib caustic, anthraquinone yuav ua rau cov kua dej liab liab. Yog hais tias nws hloov daj los yog xim av, caustic soda los yog sodium hydroxide yuav tsum tau ntxiv. Cov ntaub stripped yuav tsum tau ntxuav kom huv si.

2.8 Tshem tawm cov xim

Cov xim tsis yooj yim rau tev tawm, feem ntau siv cov poov tshuaj permanganate tev tawm.

Txheej txheem piv txwv:

Dyeing cov ntaub → dov poov tshuaj permanganate (18 g / l) → ntxuav nrog dej → dov oxalic acid (20 g / l, 40 ° C) → ntxuav nrog dej → ziab.

Stripping ntawm cov khoom siv feem ntau siv

3.1 Stripping ntawm fixing agent

Txhim kho tus neeg sawv cev Y tuaj yeem raug tshem tawm nrog me me ntawm dej qab zib tshauv thiab ntxiv O; polyamine cationic fixing tus neeg sawv cev tuaj yeem raug tshem tawm los ntawm kev npau npau nrog acetic acid.

3.2 Tshem tawm cov roj silicone thiab softener

Feem ntau, softeners tuaj yeem raug tshem tawm los ntawm kev ntxuav nrog xab npum, thiab qee zaum siv cov dej qab zib thiab cov tshuaj ntxuav tes; Qee cov softeners yuav tsum tau muab tshem tawm los ntawm formic acid thiab surfactant. Txoj kev tshem tawm thiab cov txheej txheem txheej txheem yog raug rau cov qauv kuaj.

Silicone roj yog qhov nyuaj rau tshem tawm, tab sis nrog ib qho tshwj xeeb surfactant, nyob rau hauv muaj zog alkaline tej yam kev mob, boiling yuav siv tau los tshem tawm feem ntau ntawm cov roj silicone. Tau kawg, cov no yog cov qauv kev xeem.

3.3 Tshem tawm cov khoom ua kom tiav

Tus neeg sawv cev ua tiav feem ntau yog tshem tawm los ntawm txoj kev ntawm cov kua qaub steaming thiab ntxuav. Cov txheej txheem raug yog: padding acid tov (hydrochloric acid concentration ntawm 1.6 g / l) → stacking (85 ℃ 10 feeb) → dej kub ntxuav → dej txias ntxuav → ziab kom qhuav. Nrog rau cov txheej txheem no, cov resin ntawm cov ntaub tuaj yeem raug stripped ntawm qhov nruam ncaj nraim scouring thiab bleaching tshuab.

Txoj cai kho qhov ntxoov ntxoo thiab tshuab

4.1 Txoj Cai thiab thev naus laus zis ntawm kev kho xim lub teeb
Thaum qhov ntxoov ntxoo ntawm cov ntaub dyed tsis tau raws li qhov yuav tsum tau ua, nws yuav tsum tau kho. Lub hauv paus ntsiab lus ntawm shading kho yog lub hauv paus ntsiab lus ntawm residual xim. Lub thiaj li hu ua residual xim, uas yog, ob xim muaj cov yam ntxwv ntawm kev sib nrig sib rho. Cov xim tseem ceeb yog: liab thiab ntsuab, txiv kab ntxwv thiab xiav, thiab daj thiab ntshav. Piv txwv li, yog tias lub teeb liab hnyav dhau, koj tuaj yeem ntxiv me me ntawm cov xim ntsuab kom txo tau nws. Txawm li cas los xij, cov xim residual tsuas yog siv los kho lub teeb xim hauv me me. Yog tias qhov nyiaj ntau dhau, nws yuav cuam tshuam rau xim qhov tob thiab vividness, thiab qhov ntau npaum li cas yog li ntawm lg / L.

Feem ntau hais lus, reactive dyes dyed fabrics yog qhov nyuaj rau kho, thiab vat dyes dyed fabrics yog yooj yim kho; thaum kho cov sulfur dyes, qhov ntxoov ntxoo yog qhov nyuaj rau kev tswj, feem ntau siv vat dyes ntxiv thiab rho tawm xim; Cov dyes ncaj qha tuaj yeem siv rau kev kho ntxiv, tab sis tus nqi yuav tsum tsawg dua 1 g / L.

Cov kev siv ntau ntawm kev kho qhov ntxoov ntxoo suav nrog kev ntxuav dej (tsim rau dyeing tiav cov ntaub nrog cov xim tsaus, ntau cov xim ntab, thiab kho cov ntaub nrog tsis zoo ntxuav thiab soaping ceev), lub teeb stripping (xa mus rau cov txheej txheem dye stripping, tej yam kev mob nws yog sib dua li lub ib txwm stripping txheej txheem), padding alkali steaming (muaj feem xyuam rau alkali-sensitive dyes, feem ntau yog siv rau reactive dyes; xws li reactive dub KNB xim-matched dyeing ntaub xws li xiav lub teeb, koj muaj peev xwm yob ib tug tsim nyog tus nqi ntawm caustic soda, Ntxiv los ntawm steaming thiab pav ca ntxhua kom ua tiav lub hom phiaj ntawm lightening xiav lub teeb), pad whitening tus neeg saib xyuas (muaj feem xyuam rau lub teeb liab ntawm dyed tiav fabrics, tshwj xeeb tshaj yog rau tiav fabrics dyed nrog vat dyes, xim yog ntau dua thaum xim nruab nrab los yog lub teeb. Siv tau rau cov xim fading ib txwm, rov bleaching tuaj yeem txiav txim siab, tab sis hydrogen peroxide bleaching yuav tsum yog txoj hauv kev tseem ceeb kom tsis txhob hloov xim tsis tsim nyog.), xim overcoloring, thiab lwm yam.
4.2 Cov txheej txheem kho qhov ntxoov ntxoo piv txwv: cov txheej txheem rho tawm ntawm reactive dyeing

4.2.1 Nyob rau hauv thawj tsib-daim phiaj tiaj tus ntxhua khaub ncaws ntawm lub tshuab soaping txo qis, ntxiv 1 g / L tiaj tiaj tiaj thiab ntxiv O kom boil, thiab tom qab ntawd nqa tawm lub tiaj tus ntxhua, feem ntau 15% ntiav.

4.2.2 Hauv thawj tsib lub tsev ntxhua khaub ncaws ntawm lub tshuab soaping txo qis, ntxiv lg / L tiaj tus thiab tiaj tus O, 1mL / L glacial acetic acid, thiab overrun lub tshuab ntawm chav tsev kub kom cov txiv kab ntxwv teeb li 10% sib zog.

4.2.3 Padding 0.6mL / L ntawm bleaching dej nyob rau hauv lub rolling tank ntawm lub tshuab txo, thiab lub steaming lub thawv nyob rau hauv chav tsev kub, thawj ob compartments ntawm lub tank ntxhua khaub ncaws tsis ntws dej, lub xeem ob compartments yog ntxuav nrog dej txias. , ib chav nrog dej kub, thiab ces soaped. Lub bleaching dej concentration yog txawv, thiab tev qhov tob kuj txawv, thiab cov bleaching peeling xim yog me ntsis faint.

4.2.4 Siv 10L ntawm 27.5% hydrogen peroxide, 3L ntawm hydrogen peroxide stabilizer, 2L ntawm 36 ° Bé caustic soda, 1L ntawm 209 detergent rau 500L dej, steam nws nyob rau hauv lub tshuab txo, thiab ces ntxiv O rau boil, xab npum thiab ua noj. Nyuaj 15%.

4.2.5 Siv 5-10g / L ntawm baking soda, chav rau strip xim, ntxuav thiab boil nrog xab npum, nws yuav ua tau 10-20% sib dua, thiab xim yuav bluish tom qab stripping.

4.2.6 Siv 10g/L caustic soda, chav stripping, ntxuav thiab soaping, nws yuav ua tau 20% -30% sib dua, thiab xim lub teeb yog tsaus me ntsis.

4.2.7 Siv sodium perborate 20g / L chav los txhuam cov xim, uas tuaj yeem sib dua los ntawm 10-15%.

4.2.8 Siv 27.5% hydrogen peroxide 1-5L hauv lub tshuab jig dyeing, khiav 2 hla ntawm 70 ℃, coj mus kuaj, thiab tswj cov concentration ntawm hydrogen peroxide thiab tus naj npawb ntawm kis raws li xim qhov tob. Piv txwv li, yog tias qhov tsaus ntsuab dhau 2 dhau, nws tuaj yeem ua rau qis li ib nrab mus rau ib nrab. Txog 10%, qhov ntxoov ntxoo hloov me ntsis.

4.2.9 Muab 250mL ntawm bleaching dej nyob rau hauv 250L dej nyob rau hauv lub jig dyeing tshuab, taug kev 2 kab ntawm chav tsev kub, thiab nws yuav tsum tau stripped li ntiav li 10-15%.

4.2.1O tuaj yeem muab ntxiv rau hauv lub tshuab jig dyeing, ntxiv O thiab dej qab zib tshauv tev.

Piv txwv ntawm dyeing defect kho txheej txheem

5.1 Piv txwv ntawm acrylic ntaub xim ua

5.1.1 Paj Dawb

5.1.1.1 Txheej txheem khiav:

Npuag, surfactant 1227, acetic acid → 30 feeb mus rau 100 ° C, txuag hluav taws xob rau 30 feeb → 60 ° C dej kub ntxuav → dej txias → sov txog 60 ° C, tso rau hauv dyes thiab acetic acid tuav rau 10 feeb → maj mam ua kom sov li 98 ° C, ua kom sov li 40 feeb → maj mam txias mus rau 60 ° C los tsim cov ntaub.

5.1.1.2 Stripping formula:

Surfactant 1227: 2%; acetic acid 2.5% yog '; da dej ratio 1:10

5.1.1.3 Counter-dyeing formula:

Cationic dyes (hloov mus rau cov qauv txheej txheem qub) 2O%; acetic acid yog 3%; da dej ratio 1:20

5.1.2 Tsaus xim paj

5.1.2.1 Txheej txheem txoj kev:

Npuag, sodium hypochlorite, acetic acid → cua sov txog 100 ° C, 30 feeb → txias dej ntxuav → sodium bisulfite → 60 ° C, 20 feeb → dej sov → ntxuav dej txias → 60 ° C, muab tso rau hauv dyeing thiab acetic acid → maj mam nce mus rau 100 ° C, ua kom sov li 4O feeb → Maj mam txo qhov kub ntawm 60 ° C rau daim ntaub.

5.1.2.2 Stripping formula:

Sodium hypochlorite: 2O%; acetic acid yog 10%;

Da dej ratio 1:20

5.1.2.3 Chlorine formula:

Sodium bisulfite 15%

Da dej ratio 1:20

5.1.2.4 Counter-dyeing formula

Cationic dyes (hloov mus rau cov qauv txheej txheem qub) 120%

Acetic acid 3%

Da dej ratio 1:20

5.2 Piv txwv ntawm dyeing kho ntawm nylon ntaub

5.2.1 Paj me ntsis xim

Thaum qhov sib txawv ntawm cov xim qhov tob yog 20% ​​-30% ntawm qhov tob ntawm dyeing nws tus kheej, feem ntau 5% -10% ntawm qib ntxiv O tuaj yeem siv, qhov sib piv ntawm da dej yog tib yam li dyeing, thiab qhov kub ntawm 80. ℃ thiab 85 ℃. Thaum qhov tob txog li 20% ntawm qhov dyeing qhov tob, maj mam nce qhov kub mus rau 100 ° C thiab ua kom sov kom txog thaum cov xim yog absorbed los ntawm fiber ntau li ntau tau.

5.2.2 Xim paj yeeb

Rau nruab nrab ntxoov ntxoo, ib feem ntawm kev rho tawm tuaj yeem siv los ntxiv zas xim rau qhov qub qhov tob.

Na2CO3 5% -10%

Ntxiv O 1O%-l5% ncaj nraim

Da dej piv 1:20-1:25

Kub kub 98 ℃ - 100 ℃

Lub sij hawm 90 min-120min

Tom qab cov xim raug txo, cov ntaub yog ntxuav nrog dej kub ua ntej, ces ntxuav nrog dej txias, thiab thaum kawg dyed.

5.2.3 Kev hloov xim loj heev

Txheej txheem:

36 ° BéNaOH: 1% -3%

Flat ntxiv O: 15% ~ 20%

Synthetic detergent: 5% -8%

Da dej piv 1:25-1:30

Kub kub 98 ℃ - 100 ℃

Lub sij hawm 20min-30min (kom txog rau thaum tag nrho cov decolorization)
Tom qab tag nrho cov xim yog tev tawm, qhov kub thiab txias yog maj mam txo, thiab ces yaug kom huv si nrog 0.5 mL ntawm acetic acid ntawm 30 ° C rau 10 feeb kom tag nrho neutralize cov residual alkali, thiab ces yaug nrog dej kom rov dye. Qee cov xim yuav tsum tsis txhob dyed nrog thawj xim tom qab lawv tau tev tawm. Vim tias cov ntaub hauv paus xim dhau los ua lub teeb daj tom qab nws tau tev tawm. Hauv qhov no, cov xim yuav tsum tau hloov. Piv txwv li: Tom qab cov ntxhuav xim yog tag nrho stripped, xim tom qab yuav daj daj. Yog hais tias cov ntxhuav xim yog dyed dua, qhov ntxoov ntxoo yuav grey. Yog tias koj siv Pura Red 10B, kho nws nrog ib qho me me ntawm lub teeb daj thiab hloov nws mus rau ib tug concubine xim kom qhov ntxoov ntxoo ci.

duab

5.3 Piv txwv ntawm dyeing kho ntawm polyester ntaub

5.3.1 Cov paj me me,

Strip paj kho tus neeg saib xyuas lossis tus neeg saib xyuas qhov kub thiab txias 1-2 g / L, rov ua kom sov rau 135 ° C rau 30 feeb. Qhov ntxiv dye yog 10% -20% ntawm thawj koob tshuaj, thiab tus nqi pH yog 5, uas tuaj yeem tshem tawm cov xim xim, stain, ntxoov ntxoo sib txawv thiab xim qhov tob, thiab cov nyhuv yog qhov zoo ib yam li cov ntaub ntau lawm. swatch.

5.3.2 Cov teeb meem loj

Sodium chlorite 2-5 g / L, acetic acid 2-3 g / L, methyl naphthalene 1-2 g / L;

Pib kho ntawm 30 ° C, kub ntawm 2 ° C / min mus rau 100 ° C rau 60 min, tom qab ntawd ntxuav cov ntaub nrog dej.

5.4 Piv txwv ntawm kev kho cov teeb meem loj hauv paj rwb ntaub dyeing nrog reactive dyes

Txheej txheem khiav: stripping → oxidation → counter-dyeing

5.4.1 Xim peeling

5.4.1.1 Txheej txheem tshuaj:

Insurance hmoov 5 g / L-6 g / L

Ping Ping nrog O 2 g / L-4 g / L

38 ° Bé caustic soda 12 mL/L-15 mL/L

Kub kub 60 ℃ -70 ℃

Bath ratio l: lO

Lub sijhawm 30 min

5.4.1.2 Txoj kev ua haujlwm thiab cov kauj ruam

Ntxiv dej raws li qhov sib piv ntawm da dej, ntxiv cov uas twb tau hnyav O, caustic soda, sodium hydroxide, thiab ntaub ntawm lub tshuab, tig rau ntawm chav thiab nce qhov kub ntawm 70 ° C, thiab tev tawm cov xim rau 30 feeb. Tom qab tev tawm, ntws cov kua uas seem, ntxuav ob zaug nrog dej huv, thiab tom qab ntawd ntws cov kua.

5.4.2 oxidation

5.4.2.1 Txheej txheem tshuaj

3O%H2O2 3 mL/L

38 ° Bé caustic soda l mL/L

Stabilizer 0.2 mL / L

Kub 95 ℃

Da dej ratio 1:10

Lub sijhawm 60 min

5.4.2.2 Txoj kev ua haujlwm thiab cov kauj ruam

Ntxiv dej raws li tus da dej sib piv, ntxiv stabilizers, caustic soda, hydrogen peroxide thiab lwm yam additives, tig rau lub chav thiab nce qhov kub ntawm 95 ° C, khaws cia rau 60 feeb, ces txo qhov kub kom txog 75 ° C, ntws cov dej. kua thiab ntxiv dej, ntxiv 0.2 soda, ntxuav rau 20 feeb, ntws cov kua; Siv Ntxuav hauv dej kub ntawm 80 ° C rau 20 feeb; ntxuav hauv dej kub ntawm 60 ° C rau 20 feeb, thiab ntxuav nrog dej txias kom txog thaum daim ntaub txias tag.

5.4.3 Kev sib tw

5.4.3.1 Txheej txheem tshuaj

Reactive dyes: 30% x% ntawm cov txheej txheem thawj siv

Yuanming hmoov: 50% Y% ntawm thawj txheej txheem kev siv

Soda tshauv: 50% z% ntawm cov txheej txheem qub siv

Bath ratio l: lO

Kub raws li tus txheej txheem qub

5.4.3.2 Txoj kev ua haujlwm thiab cov kauj ruam
Ua raws li txoj kev dyeing ib txwm thiab cov kauj ruam.

Luv luv qhia txog xim stripping txheej txheem ntawm blended ntaub

Disperse thiab acid dyes tuaj yeem raug tshem tawm ib nrab ntawm diacetate / wool blended fabric nrog 3 mus rau 5% alkylamine polyoxyethylene ntawm 80 txog 85 ° C thiab pH 5 txog 6 rau 30 mus rau 60 feeb. Qhov kev kho no tseem tuaj yeem tshem tawm ib nrab ntawm cov xim disperse los ntawm acetate tivthaiv ntawm diacetate / nylon thiab diacetate / polyacrylonitrile fiber ntau. Ib nrab stripping ntawm disperse dyes los ntawm polyester / polyacrylonitrile los yog polyester / ntaub plaub yuav tsum tau boiling nrog ib tug cab kuj mus txog 2 teev. Ntxiv 5 mus rau 10 grams / liter ntawm non-ionic detergent thiab 1 mus rau 2 grams / liter ntawm cov hmoov dawb feem ntau tuaj yeem txhim kho cov tev ntawm polyester / polyacrylonitrile fibers.

1 g / L anionic xab npum; 3 g / L cationic dye retardant; thiab 4 g / L sodium sulfate kev kho mob ntawm boiling point thiab pH 10 rau 45 feeb. Nws tuaj yeem ua ib nrab strip cov alkaline thiab acid dyes ntawm nylon / alkaline dyeable polyester blended ntaub.

1% tsis-ionic xab npum; 2% cationic dye retardant; thiab 10% mus rau 15% sodium sulfate kho ntawm boiling point thiab pH 5 rau 90 mus rau 120 feeb. Nws yog feem ntau siv rau stripping wool / polyacrylonitrile fiber.

Siv 2 mus rau 5 grams / liter ntawm caustic soda, thiab 2 mus rau 5 grams / liter ntawm sodium hydroxide, txo kev ntxuav ntawm 80 mus rau 85 ° C, los yog nruab nrab alkaline tov ntawm hmoov dawb ntawm 120 ° C, uas tuaj yeem tau los ntawm polyester / cellulose Ntau cov dyes ncaj qha thiab reactive raug tshem tawm los ntawm kev sib xyaw.

Siv 3% mus rau 5% hmoov dawb thiab cov tshuaj anionic los kho rau 4O-6O feeb ntawm 80 ℃ thiab pH4. Disperse thiab acid dyes tuaj yeem raug stripped los ntawm diacetate / polypropylene fiber, diacetate / wool, diacetate / nylon, nylon / polyurethane, thiab acid dyeable nylon textured yarn.

Siv 1-2 g / L sodium chlorite, boil rau 1 teev ntawm pH 3.5, kom strip disperse, cationic, direct lossis reactive dyes los ntawm cellulose / polyacrylonitrile fiber ntau blended ntaub. Thaum stripping triacetate / polyacrylonitrile, polyester / polyacrylonitrile, thiab polyester / cellulose blended fabrics, yuav tsum tau ntxiv cov cab kuj tsim nyog thiab tsis-ionic detergent.

Kev xav txog kev tsim khoom

7.1 Cov ntaub yuav tsum tau kuaj xyuas ua ntej tev lossis kho qhov ntxoov ntxoo.
7.2 Ntxuav (txias los yog dej kub) yuav tsum muaj zog tom qab cov ntaub yog tev tawm.
7.3 Stripping yuav tsum yog luv luv thiab yuav tsum rov qab yog tias tsim nyog.
7.4 Thaum stripping, tej yam kev mob ntawm kub thiab additives yuav tsum nruj me ntsis tswj raws li cov khoom ntawm cov xim nws tus kheej, xws li oxidation kuj, alkali tsis kam, thiab chlorine bleaching kuj. Txhawm rau tiv thaiv cov khoom siv ntau dhau los yog kev tswj qhov kub tsis zoo, ua rau ntau dhau los yog tev tawm. Thaum tsim nyog, cov txheej txheem yuav tsum tau txiav txim siab los ntawm stakeout.
7.5 Thaum cov ntaub raug tshem tawm ib nrab, cov xwm txheej hauv qab no yuav tshwm sim:
7.5.1 Rau kev kho xim qhov tob ntawm cov xim, qhov ntxoov ntxoo ntawm cov xim yuav tsis hloov ntau, tsuas yog xim qhov tob yuav hloov. Yog hais tias cov xim stripping tej yam kev mob yog mastered, nws muaj peev xwm ua tau raws li qhov yuav tsum tau ntawm cov qauv xim;
7.5.2 Thaum cov ntaub dyed nrog ob los yog ntau dua dyes nrog tib qhov kev ua tau zoo yog ib nrab stripped, qhov ntxoov ntxoo hloov me me. Vim tias cov xim tsuas yog stripped mus rau tib theem, cov ntaub stripped tsuas yog tshwm sim hloov qhov tob.
7.5.3 Rau kev kho mob ntawm dyeing fabrics nrog txawv dyes nyob rau hauv cov xim qhov tob, nws yog feem ntau yuav tsum tau strip lub dyes thiab rov dyed.