Cov tshuaj ntxuav ua kua noj yog ib hom khoom uas nquag siv hauv kev tu tsev. Lawv yog dej-ua raws thiab tuaj yeem tshem tawm cov av, roj thiab lwm yam tsis txaus ntseeg. Txhawm rau txhim kho lawv cov kev siv, lawv feem ntau yuav tsum tau hloov kho kom zoo rau viscosity. Lub piscosity ntawm cov xab npum yuav tsum tsis txhob qis dhau, txwv tsis pub nws yuav ntws nrawm, thiab nws yuav hnov "nyias" thaum siv; Tab sis nws yuav tsum tsis txhob siab dhau, raws li nws yuav dhau viscous thiab nyuaj rau muab faib thiab huv. Thickeners tau yog li dhau los ua ib qho ntawm cov khoom xyaw tseem ceeb hauv kev ua kua ua kom huv.
1. Sodium Carboxymethyl cellulose (CMC)
Sodium Carboxymethyl cellulose yog cov tuab tuab siv hauv cov xab npum. Nws yog dej-soluble cellulose cellulose derivative uas tuaj yeem ua kom muaj zog ua rau viscosity ntawm cov kua. CMC muaj cov txiaj ntsig zoo hauv qab no:
Cov dej zoo solubility: CMC tuaj yeem yaj tawm sai sai hauv dej thiab ua ib qho kev sib tw, pob tshab hauv cov tshuaj aqueous.
Cov khoom siv me thiab tsis muaj kev txob taus: CMC yog ib qho khoom siv polymer uas tsis muaj kev phom sij rau kev tiv thaiv ib puag ncig thiab kev noj qab haus huv.
Kev sib xyaw zoo: CMC tau sib xws nrog lwm cov khoom xyaw ua cov qauv tshuaj ntxuav, yam tsis muaj teeb meem xws li stratification lossis decomposition lossis decomposition, thiab yuav cuam tshuam rau kev ntxuav cov kev ntxuav.
2. Xanthan hniav
Xanthan ntawm cov pos hniav yog lub ntuj polysaccharide compound los ntawm cov kab mob fermentation, siv tau hauv cov zaub mov, tshuaj pleev ib ce thiab xab npum. Daim ntawv thov xanthan ntawm cov pos hniav hauv cov tshuaj ntxuav cov hauv qab no:
Cov nyhuv zoo heev: txawm tias ntawm tus nqi qis, xanthan ntawm cov pos hniav tuaj yeem ua kom muaj viscosity ntawm cov kua.
Anti-shear dmution kev ua tau zoo: xanthan ntawm cov pos hniav muaj cov shear diluting tej thaj chaw. Thaum stirred lossis nyem, lub piscosity ntawm cov xab npum yuav ib ntus tsawg, uas yooj yim rau kev xa tawm thiab siv; Tab sis cov viscosity tuaj yeem rov qab sai tom qab siv kom tsis txhob muaj floty.
Lub zog kub tsis kam: xanthhan ntawm cov pos hniav tuaj yeem nyob ruaj khov nyob rau hauv cov pa lossis qis dua, thiab yog cov tuab tuab uas tseem ua tau zoo nyob rau hauv cov xwm txheej huab.
3. Polyacrylate thickeners
Polyacrylate thickeners (xws li carbomer) yog cov khoom siv hluav taws xob nrog cov khoom siv hluav taws xob muaj zog, tshwj xeeb tshaj yog tsim nyog rau thickening pob tshab tshuaj ntxuav tes. Nws cov yam ntxwv tseem ceeb muaj:
High Transparency: Polyacrylate tuaj yeem tsim cov kev daws teeb meem heev, ua rau nws cov ntaub tuab zoo tshaj plaws rau cov tshuaj ntxuav pob tshab.
Kev siv taus ua rau muaj peev xwm ua kom muaj peev xwm ua kom muaj peev xwm ua kom muaj cov teebmeem bowening tseem ceeb dua thiab muaj kev tswj hwm ntau dua.
Phiv kev vam khom: cov nyhuv tuab ntawm cov tuab tuab no muaj feem cuam tshuam nrog cov kev daws teeb meem, thiab feem ntau ua tau zoo tshaj plaws ntawm cov qauv ntawm lub cev tsis muaj zog, yog li yuav tsum tau hloov kho thaum siv kom tau txais cov nyhuv zoo tshaj plaws.
4. Ntsev thickeners
Cov ntsev (xws li sodium chloride, sodium sulfate, thiab lwm yam) kuj yog cov tshuaj ntxuav ua kua, tshwj xeeb hauv cov tshuaj ntxuav kom muaj surfactants. Nws ua kev ua haujlwm yog hloov kho cov kev npaj ntawm surfactant molecules los ntawm kev kho lub khoos phis tawm ionic ntawm lub kaw lus, yog li cuam tshuam lub viscosity. Qhov zoo ntawm cov ntsev tuab xws li:
Tus nqi qis: ntsev thickeners yog pheej yig thiab tau yooj yim kom tau, yog li lawv tau nqi txiaj ntsig zoo ntau lawm.
Synergistic nyhuv nrog surfactants: ntsev tuab tuaj yeem txhim kho lub kaw lus ntawm cov qauv viscorosity ntawm cov qauv nrog cov ntsiab lus siab surfactant.
Feem ntau ntawm cov kev siv: Cov thickening yog siv nyob rau hauv ntau kev xab npum, tshwj xeeb yog nyob rau hauv kev lag luam tshuaj ntxuav.
Txawm li cas los xij, kev siv cov ntsev tuab 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 cov solubility ntawm cov tshuaj ntxuav kom txo qis lossis nag lossis daus. Ib qho ntxiv, lub viscosity kev kho qhov tseeb ntawm cov ntsev tuab tsis zoo raws li lwm cov thickeners.
5. Epoxylated Fatty Cawv (xws li sodium c12-14 cawv ether sulfate)
Ntxiv rau nws lub ntsiab tu kev ua haujlwm zoo, Erdhoxylated Fatty Cawv Surfactants kuj muaj qee yam cuam tshuam. Los ntawm kho cov feem sib piv ntawm cov surfactants, qee cov nyhuv tuab tuaj yeem ua tiav. Nws cov txiaj ntsig yog:
Versatility: Hom surfactant tsis tuaj yeem tsuas yog ua rau lub luag haujlwm ua kom tuab, tab sis kuj txhim kho cov xab xaub ntawm xab npum.
Kev sib xyaw zoo nrog lwm cov khoom xyaw: Ethojranysated Fatty Cawv 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 cov kev xav tau rau lwm cov thickeners: vim tias nws muaj kev tu thiab thickening cov muaj zog, kev siv cov ntshiab cov ntshiab thoov muaj peev xwm txo nyob rau hauv cov mis, yog li cov nqi kho kom zoo.
6. Acrylate Copolymers
Acrylate copolymers yog ib chav qhia hluavtaws polymer thickeners uas feem ntau siv nyob rau hauv high-end lossis tshwj xeeb-ua detergents. Lawv cov yam ntxwv tseem ceeb muaj xws li:
Txheeb xyuas viscosity tswj: los kho cov qauv ntawm copolymer, lub viscosity ntawm cov khoom tuaj yeem tswj tau meej kom ua tiav cov nyhuv yam xav tau.
Cov khoom ruaj khov zoo: Qhov tuab no muaj cov tshuaj zoo thiab muaj peev xwm tswj lub cev zoo thiab muaj peev xwm tswj tau zoo nyob rau ntau qhov kub, p tus nqi thiab surfactant systems.
Tsis yooj yim rau Delaminate: Acrylate copolymer ua kom pom zoo anti-ensamination muaj peev xwm ua kua dej, ua kom muaj kev ruaj ntseg ntawm cov khoom lag luam ntev cia.
Qhov kev xaiv ntawm cov tuab hauv cov xab npum ua kua nyob ntawm ntau yam, nrog rau cov hom surfactant nyob rau hauv cov qauv, transparency yuav tsum tau siv tus nqi tswj hwm thiab cov neeg siv kev paub. Sodium carboxymethyl cellulose thiab xanthan ntawm cov pos hniav yog feem ntau cov kev coj ua ntawm tsev neeg vim lawv cov dej dawb huv thiab ua kom huv. Rau pob tshab tshuaj ntxuav, polyacrylate thickeners yog nyiam. Cov ntsev kom huv tau tus nqi zoo thiab tsim nyog rau kev tsim khoom loj ntawm kev lag luam kev lag luam.
Lub Sijhawm Post: Oct-18-2024