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Daim ntawv thov ntawm Dispersed Dye Leveling Agent hauv Dyeing thiab Polyester

Disperse dyes feem ntau yog siv rau dyeing hydrophobic fibers xws li polyester, spandex, nylon, thiab acetate fibers. Nrog kev nce qib txuas ntxiv ntawm fiber ntau dyeing tshuab, ntau yam ntawm cov neeg ua haujlwm qib tau ua tiav qhov tseem ceeb.

1, Leveling tus neeg sawv cev rau kub-kub dyeing

Thaum siv cov dyes dispersed rau high-temperature thiab high-pressure dyeing, tsis sib xws dyeing feem ntau tshwm sim los ntawm tej yam xws li tsis zoo dispersibility, uniformity, thiab kev hloov ntawm cov dyeing, raws li zoo raws li kev tswj tsis zoo ntawm cua sov. Tshwj xeeb tshaj yog rau cov polyester fibers zoo, cov linear ceev yog tsawg heev, qhov chaw nto nce, thiab dyeing ceev ntawm dyes accelerates. Tsis tas li ntawd, cov qauv ntaub ntom ntom ua rau nws nyuaj rau cov dyes nkag mus, ua rau muaj txiaj ntsig ntau dua dyeing unevenness dua li cov pa polyester fibers. Kev siv cov khoom kub kub dispersing leveling agents thaum lub sij hawm dyeing tuaj yeem txhim kho cov nyhuv ntawm cov ntaub thiab txhim kho cov khoom zoo.

Feem ntau, cov non-ionic surfactants tuaj yeem siv los ua cov neeg ua haujlwm rau cov uas tsis yog-ionic dispersed dyes, uas tuaj yeem tsim cov ntawv cog lus hydrophobic thiab ua kom qeeb ntawm dyeing ceev kom ua tiav qib. Ntawm cov non-ionic dispersing leveling agents, polyoxyethylene ester surfactants muaj kev ua haujlwm zoo dua li polyoxyethylene ether surfactants (ester cov qauv muaj kev sib raug zoo rau polyester ntau dua li cov qauv ether), thiab surfactants nrog benzene rings muaj kev ua haujlwm zoo dua li cov roj surfactants.

Txawm li cas los xij, tsis yog-ionic surfactants yog qhov ua rau lub cev qhuav dej thaum lub sijhawm kub kub dyeing ntawm polyester, thiab kev sib txuas ntawm ethylene oxide chains thiab hydroxyl, amino, thiab lwm pab pawg ua haujlwm hauv dye molecules yog lub cev xoob adsorption, tsis muaj ion sib cuam tshuam thiab tsis zoo dispersibility thiab solubilization. Thaum siv cov huab cua qis uas tsis yog-ionic surfactants, dye aggregation yog qhov yuav tshwm sim. Vim lub zog tsis zoo txheej txheej tsim los ntawm adsorption ntawm anionic surfactants rau ntawm qhov chaw dye hais, muaj zog hluav taws xob repulsion ntawm dye particles tsim ib tug ruaj khov dispersed lub xeev, uas muaj ib tug muaj zog dispersing muaj peev xwm ntawm agglomerates ntawm dispersed dyes, Li no txo ​​lawv cohesiveness thiab ua kom cov dye ruaj khov nyob rau hauv cov tshuaj dye. Qhov no tuaj yeem daws qhov teeb meem ntawm cov xim zas xim tshwm sim los ntawm cov huab cua qis ntawm nonionic surfactants.

Ib qho kev ua haujlwm siab kub-kub leveling tus neeg sawv cev yog tsim los ntawm kev siv cov synergistic thiab synergistic los ntawm non-ionic thiab anionic surfactants, qhov twg cov qauv sib txawv ntawm txhua qhov sib txawv muaj cov teebmeem sib txawv. Muaj ntau ntau yam khoom siv kub-kub tus neeg sawv cev (qee qhov kuj suav nrog qee tus neeg nqa khoom) tsim nrog anionic / noionic surfactants. Cov qauv sib txawv ntawm txhua qhov sib txawv muaj cov haujlwm sib txawv, feem ntau muab faib ua: 1) ethoxy qauv tuaj yeem ntes cov dyes dispersed, nce qhov chaw dyeing, thiab ncua dyeing thaum lub sij hawm dyeing; 2) Thaum lub dyeing kub ncav cuag ib tug tseem ceeb tus nqi, aromatic compounds sai sai ua plasticization thiab o ntawm polyester fibers, txo cov iav hloov kub ntawm polyester los ntawm 20-25 ℃, ho nce lub pores nyob rau hauv lub fibers, thiab cia dyes sai thiab concentratedly dye cov fibers. Nyob rau tib lub sijhawm, lawv tuaj yeem ua cov kuab tshuaj rau cov dyes kom tsis tu ncua desorb thiab tshem tawm ntawm cov fibers, uas ua rau muaj kev txav chaw tseem ceeb (hloov dyeing) kom ua tiav cov nyhuv dyeing.

Qee cov khoom lag luam ntawm cov khoom siv surfactants muaj cov khoom ua npuas siab, uas tuaj yeem ua rau muaj teeb meem hauv cov tshuab dyeing ceev thiab me me da dej dyeing. Yog li ntawd, tsawg foaming leveling agents yuav tsum tau. Qhov kev daws teeb meem yog ntxiv cov defoamers, tshwj xeeb tshaj yog organosilicon defoamers, uas muaj txiaj ntsig zoo ntawm qhov kub thiab txias; Cov khoom uas tsis tshua muaj foaming yog tau los ntawm copolymerizing ethylene oxide thiab propylene oxide.