Cov tshuaj ntxuav tes ua kua yog ib hom khoom siv hauv tsev tu. Lawv yog cov dej-raws li thiab tuaj yeem tshem tawm cov av, roj thiab lwm yam impurities. Txhawm rau txhim kho lawv cov kev paub siv, lawv feem ntau yuav tsum tau hloov kho kom haum rau viscosity. Lub viscosity ntawm cov tshuaj ntxuav tes yuav tsum tsis txhob qis dhau, txwv tsis pub nws yuav ntws sai, ua rau nws nyuaj rau tswj tus nqi, thiab nws yuav hnov "nyias" thaum siv; tab sis nws yuav tsum tsis txhob siab dhau, vim nws yuav khov heev thiab nyuaj rau kev faib thiab ntxuav. Yog li ntawd, cov thickeners tau dhau los ua ib qho ntawm cov khoom xyaw tseem ceeb hauv cov tshuaj detergent kua.
1. Sodium carboxymethyl cellulose (CMC)
Sodium carboxymethyl cellulose yog cov thickener dav siv hauv cov tshuaj ntxuav tes. Nws yog cov dej-soluble cellulose derivative uas tuaj yeem ua kom cov viscosity ntawm cov kua ua tau zoo. CMC muaj qhov zoo hauv qab no:
Cov dej zoo solubility: CMC tuaj yeem yaj sai sai hauv dej thiab tsim cov dej sib xws, pob tshab hauv cov kua dej.
Mob me me thiab tsis ua rau khaus: CMC yog cov khoom siv los ntawm cov khoom siv polymer uas tsis muaj kev phom sij rau ntawm daim tawv nqaij lossis ib puag ncig, ua tau raws li cov neeg siv khoom niaj hnub no rau kev tiv thaiv ib puag ncig thiab kev noj qab haus huv.
Kev sib raug zoo: CMC zoo sib xws nrog lwm cov khoom xyaw hauv cov qauv tshuaj ntxuav tes, tsis muaj teeb meem xws li stratification lossis decomposition, thiab yuav tsis cuam tshuam rau kev ntxuav.
2. Xanthan cov pos hniav
Xanthan cov pos hniav yog lub ntuj polysaccharide compound tsim los ntawm cov kab mob fermentation, feem ntau siv hauv cov khoom noj, tshuaj pleev ib ce thiab tshuaj ntxuav tes. Daim ntawv thov ntawm xanthan cov pos hniav hauv detergents muaj cov yam ntxwv hauv qab no:
Cov nyhuv thickening zoo heev: Txawm tias muaj qhov sib ntxiv qis, xanthan cov pos hniav tuaj yeem ua rau kom cov viscosity ntawm cov kua.
Anti-shear dilution kev ua tau zoo: Xanthan cov pos hniav muaj zoo shear dilution zog. Thaum nplawm lossis nyem, viscosity ntawm cov tshuaj ntxuav tes yuav txo qis ib ntus, uas yooj yim rau kev faib thiab siv; tab sis cov viscosity tuaj yeem rov qab sai sai tom qab siv kom tsis txhob muaj dej ntau dhau.
Qhov kub thiab txias tsis kam: Xanthan cov pos hniav tuaj yeem nyob ruaj khov ntawm qhov kub siab dua lossis qis dua, tsis yooj yim rau degradation lossis viscosity txo, thiab yog cov thickener uas tseem ua tau zoo nyob rau hauv huab cua txias.
3. Polyacrylate thickeners
Polyacrylate thickeners (xws li Carbomer) yog cov khoom siv hluavtaws polymer uas muaj peev xwm thickening heev, tshwj xeeb tshaj yog tsim rau thickening pob tshab detergents. Nws cov yam ntxwv tseem ceeb suav nrog:
Siab pob tshab: Polyacrylate tuaj yeem tsim cov kev daws teeb meem meej heev, ua rau nws yog qhov zoo tshaj plaws kev xaiv cov tshuaj pleev xim rau pob tshab.
Muaj peev xwm thickening: Polyacrylate tuaj yeem ua tiav cov teebmeem thickening ntawm qhov qis dua thiab muaj kev tswj xyuas meej heev ntawm viscosity.
pH dependence: Lub thickening nyhuv ntawm no thickener yog ze ze rau pH tus nqi ntawm cov tshuaj, thiab feem ntau ua tau zoo nyob rau hauv tsis muaj zog alkaline tej yam kev mob, yog li cov pH ntawm cov mis nyuj yuav tsum tau kho thaum siv kom tau qhov zoo tshaj plaws nyhuv.
4. Ntsev thickeners
Cov ntsev (xws li sodium chloride, sodium sulfate, thiab lwm yam) kuj yog cov thickeners nyob rau hauv cov kua detergents, tshwj xeeb tshaj yog nyob rau hauv detergents uas muaj surfactants. Nws lub hauv paus ntsiab lus ua haujlwm yog los hloov cov txheej txheem ntawm surfactant molecules los ntawm kev kho lub zog ionic ntawm lub cev, yog li cuam tshuam rau viscosity. Qhov zoo ntawm ntsev thickeners muaj xws li:
Tus nqi qis: Cov ntsev thickeners kuj pheej yig thiab yooj yim kom tau, yog li lawv muaj nqi zoo hauv kev tsim khoom loj.
Synergistic nyhuv nrog surfactants: ntsev thickeners tuaj yeem txhim kho cov viscosity ntawm lub cev hauv cov qauv nrog cov ntsiab lus siab surfactant.
Kev siv ntau yam: Cov txheej txheem ntawm thickening no yog siv nyob rau hauv ntau lub lag luam detergents, tshwj xeeb tshaj yog nyob rau hauv industrial detergents.
Txawm li cas los xij, kev siv ntsev thickeners kuj muaj qee qhov kev txwv. Piv txwv li, tus nqi ntxiv yuav tsum tsis txhob ntau dhau, txwv tsis pub nws yuav ua rau lub solubility ntawm cov tshuaj ntxuav tes kom txo qis lossis txawm tias nag lossis daus. Tsis tas li ntawd, qhov viscosity hloov qhov tseeb ntawm cov ntsev thickeners tsis zoo li lwm cov thickeners.
5. Ethoxylated fatty alcohols (xws li sodium C12-14 cawv ether sulfate)
Ntxiv nrog rau nws txoj haujlwm tseem ceeb tu, ethoxylated fatty cawv surfactants kuj muaj cov nyhuv thickening. Los ntawm kev kho qhov sib piv ntawm cov surfactants, cov nyhuv thickening tuaj yeem ua tiav. Nws qhov zoo yog:
Versatility: Hom surfactant no tuaj yeem ua tsis tau tsuas yog ua lub luag haujlwm thickening, tab sis kuj txhim kho cov tshuaj detergents.
Kev sib raug zoo nrog lwm cov khoom xyaw: Ethoxylated fatty alcohols yog sib xws nrog cov surfactants, flavors, pigments thiab lwm yam khoom xyaw, thiab yuav tsis cuam tshuam rau kev ua tau zoo ntawm cov khoom kawg.
Txo qhov xav tau rau lwm cov thickeners: Vim nws muaj ob qho tib si tu thiab thickening zog, kev siv cov ntshiab thickeners yuav raug txo nyob rau hauv cov mis nyuj, yog li optimizing tus nqi.
6. Acrylate copolymers
Acrylate copolymer yog ib chav kawm ntawm hluavtaws polymer thickeners uas feem ntau siv rau hauv high-end los yog tshwj xeeb-function detergents. Lawv lub ntsiab nta muaj xws li:
Precise viscosity control: Los ntawm kev kho cov qauv ntawm cov copolymer, viscosity ntawm cov khoom tuaj yeem raug tswj kom ua tiav cov txiaj ntsig xav tau.
Kev ruaj ntseg zoo: Cov thickener no muaj cov tshuaj zoo thiab lub cev ruaj khov thiab tuaj yeem tswj tau cov viscosity zoo nyob rau hauv ntau qhov kub thiab txias, pH qhov tseem ceeb thiab surfactant systems.
Tsis yooj yim rau delaminate: Acrylate copolymer thickeners qhia zoo los tiv thaiv delamination muaj peev xwm nyob rau hauv cov kua detergents, ua kom ruaj khov ntawm cov khoom nyob rau hauv lub sij hawm ntev cia.
Kev xaiv ntawm thickener nyob rau hauv cov kua detergents nyob ntawm ntau yam, nrog rau hom surfactant nyob rau hauv cov mis, pob tshab yuav tsum, tus nqi tswj thiab cov neeg siv kev paub. Sodium carboxymethyl cellulose thiab xanthan cov pos hniav feem ntau yog cov kev xaiv zoo tshaj plaws hauv cov khoom siv hauv tsev vim lawv cov dej zoo solubility, me ntsis thiab thickening nyhuv. Rau pob tshab detergents, polyacrylate thickeners yog nyiam. Ntsev thickeners muaj tus nqi zoo thiab tsim nyog rau kev tsim khoom loj ntawm cov tshuaj detergents.
Post lub sij hawm: Oct-18-2024