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SULFUR DYES

Sulphur dyes yog ib qho ntawm feem ntau siv dyes rau paj rwb.Cov zis ntawm sulphur dyes nyob rau hauv lub ntiaj teb no ncav cuag ntau pua txhiab tons, thiab qhov tseem ceeb tshaj plaws ntau yam yogSULFUR BLACK.Cov xim dub ntawm sulphur dub dyed paj rwb textiles yog tshwj xeeb thiab irreplaceable, tshwj xeeb tshaj yog nyob rau hauv mercerized paj rwb textiles.Kev xyaum tau ua pov thawj tias yog tias tag nrho cov txheej txheem dyeing ntawm ncaj qha dub, reactive dub thiab txawmua vat dub, uas feem ntau siv tam sim no, tsis nyob hauv qhov chaw, xim ceev thiab xim dub kuj nyuaj rau mus txog qib ntawmsulfur dub.Sulphur dub yog yooj yim nyob rau hauv synthesis, tsis tshua muaj nqi, zoo nyob rau hauv fastness thiab tsis carcinogenic.Nws yog nyiam los ntawm ntau yam luam ntawv thiab dyeing manufacturers thiab yog dav siv nyob rau hauv dyeing ntawm paj rwb thiab lwm yam cellulose fibers.

 

Xyoo 1893, R Vikal fused p-aminophenol nrog sodium sulfide thiab sulfur los uasulfurdub.Nws kuj pom tias ntau yam xim dub tuaj yeem ua los ntawm kev sib xyaw qee cov benzene thiab naphthalene derivatives nrog sulfur thiab sodium sulfide.Txij thaum ntawd los, tib neeg tau tsim xiav, liab thiab ntsuab sulphur dyes ntawm lub hauv paus no.Nyob rau tib lub sijhawm, txoj kev npaj thiab dyeing txheej txheem tau zoo heev.Qhov tshwm sim ntawm dej-soluble sulphur ua dyes, kua sulphur dyes thiab ib puag ncig tus phooj ywg sulphur dyes tau ua sulphur dyes vam meej.

 

Muaj ob txoj kev tsim khoom lag luam rau sulphur dyes.

  1. Txoj kev ci.The amine, phenol los yog nitro tebchaw ntawm raw aromatic hydrocarbons yog ci nrog sulfur los yog sodium polysulfide ntawm kub kub los npaj daj, txiv kab ntxwv thiab xim av sulfide dyes.
  2. Boiling txoj kev: amine, phenol los yog nitro compound ntawm raw aromatic hydrocarbon thiab sodium polysulfide yog rhuab thiab boiled nyob rau hauv dej los yog organic hnyav los npaj dub, xiav thiab ntsuab sulfide dyes.

 

Classification ntawm sulfur dyes.

  1. Hmoov sulfur dye. Feem ntau, nws xav tau sodium sulfide rau boil thiab siv tom qab dissolution.Cov xim zoo li no yog insoluble hauv dej.Cov xim tuaj yeem raug txo kom cryptochrome los ntawm alkaline txo tus neeg sawv cev thiab yaj hauv dej.Cov sodium ntsev ntawm cryptochrome tuaj yeem nqus tau los ntawm fiber ntau.
  2. Dej soluble sulphurxim.Cov dyes yog cov yam ntxwv ntawm cov dej-soluble pawg hauv lawv cov qauv molecular, zoo solubility thiab zoo levelness.Ordinary sulfur dyes yog reacted nrog sodium sulfide los yog sodium bisulfite los tsim thiosulfate ntawm cov dye, uas muaj ib tug solubility ntawm 150g / L ntawm 20.thiab yog siv rau dyeing tas li.Cov dej-soluble sulfur dye dissolves sai sai nyob rau hauv chav tsev kub, tsis muaj insoluble teeb meem, thiab saturated yaj tus nqi txaus kom tau raws li tag nrho cov dissolution yuav tsum tau ntawm cov dyeing nqi.Dej soluble sulfur dyes muaj qhov kub thiab txias tsis kam.Txawm li cas los xij, tsis muaj tus neeg sawv cev txo qis hauv cov dye thiab nws tsis muaj affinity rau fiber ntau.Alkali sulfide yuav tsum tau ntxiv thaum lub sij hawm dyeing, thiab nws hloov mus rau hauv ib lub xeev nrog affinity rau cellulose fiber los ntawm nucleophilic cov tshuaj tiv thaiv thiab txo cov tshuaj tiv thaiv.Suspension pad dyeing feem ntau yog siv rau textiles.
  3. Cov kua sulfur dye.Nrog ib tug npaum li cas ntawm sodium sulfide reductant, cov dye yog pre txo rau dej-soluble leuco.Feem ntau sulfide dyes raug txo rau cov dej-soluble leucosomes nrog cov tshuaj txo qis, thiab cov tshuaj txo qis ntau ntxiv yog cov tshuaj antioxidants.Cov kua dyes ua los ntawm kev ntxiv cov tshuaj tua kab mob, cov ntsev inorganic thiab cov dej muag muag tseem hu ua pre reduce dyes.Thaum siv, nws tuaj yeem siv ncaj qha tom qab diluted nrog dej.Cov xim no muaj cov sulfur, xws li sodium sulfide, tab sis kuj tsis muaj lossis muaj cov sulfur me me.Tsis muaj sulfur-muaj dej khib nyiab thaum dyeing.
  4. Environmental tus phooj ywg sulphurxim.Nyob rau hauv cov txheej txheem ntau lawm, nws yog refined rau hauv dyeing cryptochrome, tab sis cov ntsiab lus leej faj thiab cov ntsiab lus polysulfide yog deb tshaj li cov sulfide dyes zoo tib yam.Cov xim no muaj purity siab, ruaj khov reducibility thiab zoo permeability.Nyob rau tib lub sijhawm, cov piam thaj thiab cov hmoov tuav pov hwm yog siv los ua binary txo cov neeg ua haujlwm hauv cov dyeing da dej, uas tuaj yeem txo qis sulfide dyes, tab sis kuj ua lub luag haujlwm ib puag ncig.
  5. Sulphurvaj dye.Nws feem ntau ua rau hmoov, nplua, ultra-nplua hmoov los yog kua dye.Nws yog tsim rau dyeing ntawm polyester paj rwb blended fabrics nrog disperse dyes nyob rau hauv tib da dej.Nws tuaj yeem siv tau rau kev txo cov dej qab zib caustic, hmoov pov hwm (lossis sulfur dioxide urea) es tsis txhob txo qis thiab tawg ntawm sodium sulfide.
  6. Disperse sulphurxim.Disperse sulfur dyes yog tsim los ntawm sulfur dyes thiab sulfur vat dyes raws li kev lag luam ua cov txheej txheem ntawm disperse dyes.Lawv feem ntau yog siv rau pad dyeing ntawm polyester viscose los yog polyester paj rwb blended fabrics nrog disperse dyes nyob rau hauv tib da dej.

Post lub sij hawm: Aug-19-2022