Koj Paub Dab Tsi Txog Sulfur Dyes (2)?

yug

Lub ntsiab ntau yam ntawm sulfur dyes yog sulfur dub (CI sulfur dub 1).Nws yog npaj los ntawm hydrolyzing 2, 4-dinitrochlorobenzene thiab sodium hydroxide tov rau hauv sodium dinitrophenol tov nyob ze boiling, ces cua sov thiab boiling nrog sodium polysulfide tov ntawm ib tug tej yam molecular ratio, thiab txo thiab sulfurizing cov tshuaj tiv thaiv nyob rau hauv siab los yog tsis muaj siab.Tom qab cov tshuaj tiv thaiv sulfurization tiav, nws tau qhuav ncaj qha nrog lub tshuab ziab khaub ncaws kom tau txais cov xim qub.Tom qab ntawd nws tau muab tso rau hauv kev lag luam dyes.Thaum lub sij hawm vulcanization, qhov sib piv molecular ntawm sodium phenol thiab sodium polysulfide, x (ie, sulfur index) nyob rau hauv sodium polysulfide Na2Sx thiab cov tshuaj tiv thaiv kub yog txawv, thiaj li hais tias lub teeb xim ntawm cov sulfur dub khoom muaj qhov sib txawv ntawm lub teeb ntsuab, ntsuab. lub teeb liab thiab lub teeb liab.Qhov loj tshaj qhov tsis zoo ntawm sulfur dub dye yog qhov tshwm sim ntawm daim ntaub nkig.Qhov no yog vim hais tias cov sulfide dub molecule muaj active sulfur nyob rau hauv daim ntawv ntawm polysulfide chains.Qhov muaj pes tsawg leeg ntawm leej faj no tsis ruaj khov, thiab thaum cov xim yog rhuab los yog muab tso rau hauv cov cua kub thiab av noo, nws yooj yim rau oxidize rau sulfuric acid, uas ua rau brittleness ntawm daim ntaub paj rwb.Nyob rau hauv xyoo tas los no, los ntawm kev txhim kho cov txheej txheem ntawm cov sulfur dub, qhov zoo tib yam sulfur dub yog txias txog li 100 ℃ tom qab ua, thiab formaldehyde thiab monochloroacetic acid ntxiv rau stabilize cov sulfur tsis ruaj khov nyob rau hauv cov xim, thiab ib tug anti-brittle sulfur dub. dyeing yog ua.

Siv

Sulfur dyes yog siv los txo qis rau cov dej-soluble leucosome nrog sodium sulfide lossis hmoov pov hwm, thiab tom qab ntawd hloov rov qab mus rau qhov qub xim tsis muaj xim tom qab absorbed los ntawm cov xim los ntawm oxidation los yog lwm yam teebmeem, yog li cov dye yog tsau ntawm cov xim. .

Thov

sulfur dyes yog dav siv nyob rau hauv dyeing ntawm cellulose fibers, tsuas yog siv nyob rau hauv yarns, duab thiab lwm yam industrial fabrics thiab hnyav fabrics.Feem ntau siv ntau hom yog sulfur Yuan, sulfur xiav,

Kev daws teeb meem

(1) Cov khoom ntawm cov tshuaj txo qis

1. Cov khoom ntawm Na2S

(1) Kuj tseem hu ua alkali sulfide, lub npe nrov tsw ntxhiab alkali, muaj txiaj ntsig zoo ntawm kev lag luam alkali sulfide feem ntau yog li 50%, thiab cov tsos yog daj-xim av.Nws yog ib tug txo tus neeg sawv cev, tab sis kuj muaj zog alkali tus neeg sawv cev, ruaj khov zog.Lub peev xwm txo qis ntawm sodium sulfide yog qis dua li cov ntawv pov hwm cov hmoov, cov alkalinity qis dua li cov dej qab zib caustic thiab ntau dua li cov dej qab ntsev, thiab nws muaj zog corrosion rau ntawm daim tawv nqaij.

(2) Sodium sulfide hydrolysis rau NaHS, NaHS ntawm kev txo cov dye, nws tuaj yeem pom tias sodium sulfide txo peev xwm cuam tshuam nrog nws cov hydrolysis.

(3) Sodium sulfide tsim H2S roj thaum nws ntsib cov kua qaub, yog li yuav tsum tau saib xyuas kom tsis txhob muab tso ua ke nrog kua qaub.

(4) Sodium sulfide raug nyob rau hauv cov huab cua yuav nqus dej, C02, 02, thiab lwm yam., yog li ntawd qhov zoo muaj pes tsawg leeg txo thiab maj mam poob.Yog li ntawd, nws yuav tsum tau muab kaw thaum khaws cia, thiab nws cov muaj pes tsawg leeg yuav tsum tau soj ntsuam thaum nws tsis rov qab siv lub sijhawm ntev.

(5) Sodium sulfide tov yuav tsum tsis txhob ntev, txwv tsis pub nws yuav oxidized los ntawm huab cua thiab txo nws cov hauj lwm zoo.

siv

Feem ntau siv rau paj rwb, hemp fiber dyeing

Peb lub tuam txhab tsuas yog tsimSulfur Dub Bluish,Sulfur Blue Brn 150%,Sulfur Liab 14,Sulfur Liab Dyesthiab lwm yam sulfur dyes feem ntau yog muag hauv tsev thiab txawv teb chaws, xws li Bangladesh, Pakistan, Qaib ntxhw, Is Nrias teb, Nyab Laj, Ltalis, thiab lwm yam. Nws tau raug lees paub thiab qhuas los ntawm cov neeg siv khoom feem ntau, vim tias peb muaj kev saib xyuas zoo thiab qis. tus nqi zoo.Peb kuj ua tsaug rau peb cov neeg siv khoom rau lawv txoj kev txhawb nqa thiab kev lees paub ntawm peb lub tuam txhab.