Kev siv cov tshuaj fluorescent whitening agents rau acetate fabrics
Acetate fiber yog ib qho thermoplastic fiber uas yooj yim deformed nyob rau hauv qhov kub thiab txias thiab high humidity tej yam kev mob, cuam tshuam nws gloss. Yog li ntawd, cov txheej txheem kub yuav tsum tsis txhob siab dhau. Los ntawm nws cov qauv tshuaj, nws yog ester ntawm cellulose. Yog tias muaj cov tshuaj tiv thaiv saponification tshwm sim, cov yam ntxwv ntawm acetate fiber yuav ploj mus thiab kev ua haujlwm dyeing kuj yuav hloov. Yog li ntawd, kev saib xyuas tshwj xeeb yuav tsum tau them thaum ua cov kua qaub thiab alkali da dej. Nyob rau tib lub sijhawm, vim lub zog tsis zoo ntawm acetate fiber ntau, qhov nro yuav tsum me me thaum lub sijhawm ua haujlwm los tiv thaiv kev tawg. Acetate ntaub yuav tsum tau desized ua ntej whitening, thiab tsuas yog yuav whitened tom qab ntxuav, txwv tsis pub cov nyhuv whitening yuav raug cuam tshuam.
Kev ua piv txwv 1:
Lub optical brightener Tinopal ET (CI Optical brightener 156) tuaj yeem siv los ua kom dawb acetate fibers los ntawm peb txoj kev: dip dyeing, pad dyeing thiab kub melting.
(1) Dyeing thiab whitening.
① Ib qho tshuaj dawb dawb:
Tinopal ET 0. 3% ~ 3% (omf)
Cov txheej txheem ntxuav hniav dawb:
Cov ntaub yog dyed ntawm 40-50 degree thiab kho rau 10-15min. Tom qab ntawd lub dyeing da dej yog rhuab mus rau 85-90 degree nyob rau hauv 30min, thiab dyeing yog khaws cia rau 30-60min. Tshem tawm, ntxuav thiab qhuav.
② Formula rau tib da dej nrog chlorite bleaching:
Tinopal ET 0. 3% ~ 3% (omf)
Sodium chlorite (80%) 1 ~ 3g / L
Oxalic acid (hloov pH=3 ~ 4) 1 ~ 2g / L
Sodium nitrate 3g / L
Txheej txheem whitening:
Cov ntaub yog dyed ntawm 40 degree, ces cov dye da dej yog rhuab mus rau 90 degree mus rau 90 degree nyob rau hauv 20 degree mus rau 30 degree, khaws dyed rau 45 degree mus rau 60 degree, tshem tawm, ntxuav thiab qhuav.
(2) Pad dyeing thiab whitening mis:
Tinopal ET 5-30g/L
Formic acid (85%) 2 ~ 3mL / L
Cov txheej txheem ntxuav hniav dawb:
Cov ntaub yog padded nrog 5-30g/L fluorescent whitening tus neeg saib xyuas (padding npaum li cas ntawm 50%) ntawm 20-40 degree tsis qhuav nyob rau hauv nruab nrab, thiab ces immersed nyob rau hauv ib tug 2-3mL / L formic acid (85%) da dej. Cov txheej txheem hauv lub xeev boiling rau 5 mus rau 15 feeb, tshem tawm, ntxuav thiab qhuav.
(3) Kub yaj whitening formula:
Tinopal ET 5-30g/L
Txheej txheem whitening:
Npog cov ntaub nrog 5-30g / L fluorescent whitening tus neeg sawv cev ntawm 20 mus rau 40 degrees Celsius (padding tus nqi yog li 50%), thiab kho nws li 18 vib nas this ntawm 210 txog 225 degrees Fahrenheit kom tau txais cov nyhuv whitening txaus siab .
Daim ntawv thov piv txwv 2:
Fluorescent brightener DCB (CI Fluorescent Whitening Agent 121) tuaj yeem tsim cov nyhuv whitening zoo ntawm acetate fiber, dyeing saum 40, thiab tsis cuam tshuam los ntawm tus nqi pH. Nws tuaj yeem siv nrog kev txhim kho acetate fiber Qhov saum npoo saponification tiav los txhim kho tes ntawm fiber ntau fabrics thiab txo electrostatic induction yog ua nyob rau tib lub sij hawm los yog ua raws li los ntawm whitening. Nws tuaj yeem siv rau dip dyeing lossis pad-steaming, thiab kuj tseem tsim nyog rau kev luam ntawv xim hauv av.
(1) Triacetate fiber ntau whitening.
① Dip dyeing formula:
Blankophor DCB Ultrafine los yog Blankophor DCB Ultrafine R pH (acetic acid hloov)
Cov txheej txheem ntxuav hniav dawb: txheej txheem ntawm 80 ~ 125 rau 30 feeb.
(2) Diacetate fiber ntau whitening.
① Dip dyeing thiab whitening mis:
Blankophor DCB Ultrafine los yog
Blankophor DCB Ultrafine R 0. 2% ~ 1% (omf)
pH tus nqi (acetic acid hloov) 4
Cov txheej txheem ntxuav hniav dawb:
ntawm 60 ~ 70, txheej txheem rau 30 feeb
Kev ua piv txwv 3:
Optical brightener Blankophor ACF (CI Optical brightener 101) Cov pa dyeing txoj kev tuaj yeem siv tau kom tau txais cov txiaj ntsig zoo nkauj ntawm diacetate fiber thiab triacetate fiber. Cov nyhuv whitening yuav raug kho kom zoo dua thaum siv chlorite bleach da dej. Nws tuaj yeem siv rau yuav luag txhua lub tshuab dyeing, xws li beam dyeing, pob high-pressure dyeing thiab pob dyeing tshuab.
(1) Ib qho tshuaj dawb dawb:
Blankophor ACF 0. 5% ~ 2% (omf)
Diadavin EWN 0. 5 ~ 1g / L
Acetic acid (60%) 1.5mL/L
pH tus nqi 4-5
Txheej txheem whitening:
diacetate fiber yog kho ntawm 70 ~ 80 rau 30 ~ 45min; triacetate fiber ntau
Cov txheej txheem ntawm qhov kub ntawm 80 mus rau 115 rau 20 feeb.
(2) Bleaching-whitening da dej formula:
Blankophor ACF 1% ~ 2% (omf)
Sodium chlorite (50%) 0. 5 ~ 2g/L
Complex phosphate 0. 3 g / L
Avolan IW 0. 3 g / L
Formic acid (85%) 1 mL / L
Los yog oxalic acid 0. 5g / L
pH tus nqi 3-4
Kev ua piv txwv 4:
Fluorescent whitening agent DT dip dyeing whitening. mis nyuj:
Nws yog ib qho nyuaj rau xav txog
Optical brightener DT 0. 7% (ntawm)
Leveling agent OP 0. 5g / L
Txheej txheem whitening:
cawv piv 1:30, 50-80, dip dyeing rau 25 feeb.
