Daim ntawv thov qhia ntawm cellule thickener

Cov xim looj xwb yog kev sib xyaw ntawm cov pigments, muab faib ua ke thiab cov tshuaj ntxiv kom haum rau txhua theem ntawm kev tsim khoom, chaw khaws khoom thiab kev tsim kho. Xws li ntxiv yog feem ntau hu ua cov thickeners, uas tuaj yeem ua kom muaj viscosity ntawm cov khoom siv ntawm cov txheej txheem ntawm cov txheej txheem, yog li lawv tseem hu ua cov tuab tuab, yog li ntawd lawv kuj tau hu ua tuab tuab, yog li lawv tseem hu ua cov tuab yaj.

Cov hauv qab no tsuas qhia cov yam ntxwv tseem ceeb ntawm cov siv cellule uas ib txwm siv thiab lawv daim ntawv thov hauv cov xim tsev zoo.
Cellulosic cov khoom uas tuaj yeem siv rau cov tsho loj ua ke suav nrog methyl cellulose, hydroxyethyl cellulose, thiab hydroxypropal metheny cellulose. Qhov loj tshaj plaws ntawm cov cellule thickener yog tias cov nyhuv tuab yog qhov zoo kawg nkaus, thiab tseem ua kom cov xim qhuav lub sijhawm, thiab tseem ua kom cov xim qhuav, tiv thaiv cov xim los ntawm ziab. Nag lossis Stratification thaum lub sijhawm cia, txawm li cas los xij, xws li cov tuab neeg no kuj muaj qhov tsis zoo ntawm cov xim tha xim, tshwj xeeb tshaj yog thaum siv qib viscosity siab.

Cellulose yog cov khoom noj khoom haus rau cov microorganisms, yog li tiv thaiv cov kev ntsuas me me yuav tsum tau dag thaum siv nws. Cellulosic thickeners tsuas tuaj yeem ua rau cov xim dej ntawm cov xim, yog li lawv tuaj yeem tuaj yeem hloov kho cov xim ntawm cov xim dej ntawm cov xim tsawg thiab nruab nrab (feem ntau hu ua ku viscosity).

1. Hydroxyethyl cellulose

Cov kev qhia tshwj xeeb thiab qauv ntawm hydroxyethyl cellulose cov khoom lag luam yog tsuas yog muaj kev sib txawv raws li cov degree ntawm hloov chaw thiab viscosity. Ntxiv nrog rau qhov sib txawv hauv viscosity, ntau yam ntawm hydroxyethyl cellulose tuaj yeem faib ua ib txwm muaj thiab hom kev hloov kho ntawm kev hloov kho hauv cov txheej txheem ntau lawm. Raws li cov txheej txheem ntawm kev siv yog kev txhawj xeeb, hydroxyethyl cellulose tuaj yeem raug ntxiv ntawm cov txheej txheem ntau lawm. Cov hom nrawm-dispersing tuaj yeem txuas ncaj qha rau hauv daim ntawv ntawm cov hmoov av tsis muaj txiaj ntsig, thiab tom qab ntawd nce tus nqi pyl kom ua rau nws yaj sai. Cov kauj ruam sib xws kuj tseem siv tau los npaj qee qhov kev xav ntawm cov kua nplaum thiab ntxiv rau cov xim pleev xim.

2. HydroxyPropYthyl Cellulose

Lub thickening nyhuv ntawm hydroxypropylenchlcellulose yog ib qho zoo ib yam li uas yog, kom nce viscosity ntawm cov nqi viscosity ntawm tsawg thiab nruab nrab cov nqi sib zog. HydroxyPropyyl methylulose yog tiv taus enzymatic degradation, tab sis nws cov dej solubility tsis zoo li tias ntawm hydroxyethyl cellulose, thiab nws muaj qhov tsis zoo ntawm kev ua haujlwm thaum rhuab. Rau cov npoo npoo hydroxypropyl methylcellulose, nws tuaj yeem txuas ncaj qha rau dej thaum siv, ntxiv cov dej tsis zoo li 8-9, thiab do kom txog rau thaum tag nrho cov yaj. Rau hydroxypropyl methylulose tsis muaj kev kho deg, nws tuaj yeem ua kom sov nrog chav dej kub, thiab tom qab ntawd txias nrog dej txias lossis dej khov kom yaj nws.

3. Methyl Cellulose

Methylcellulose muaj cov khoom zoo sib xws rau hydroxyprropyloostrose, tab sis tsis tshua ruaj khov nyob rau hauv viscosity nrog kub.

Hydroxyethyl cellulose yog cov tuab tshaj plaws siv thickener nyob rau hauv looj cov xim tsev, thiab nws yog siv nyob rau hauv cov xim tsev siab, nruab nrab thiab tuab tsim cov xim pleev xim yas. Dav siv nyob rau hauv lub thickening ntawm downex xim zoo ib txwm, thiab lwm yam yog hydroxypropylulose, uas tseem siv nyob rau hauv qee yam nqi vim yog kev txhawb nqa cov tuam ntxhab. Methyl cellulose tau siv tsis yog siv nyob rau hauv looj cov xim tsev, tab sis nws yog dav siv nyob rau hauv hmoov sab nrauv thiab sab nrauv sab nrauv vim tias nws cov kev sib cais zoo thiab cov dej ua kom zoo. High-viscosity meylosity cellulose tau xaus lub putty nrog zoo tshaj plaws thixotropy thiab dej khaws cia, ua nws muaj cov khoom siv scraping zoo.