HPMC, lossis hydroxypropylulcellulose, yog ib hom dej-soluble polymer dav siv nyob rau hauv cov tshuaj pleev ib ce, khoom noj khoom haus thiab tshuaj ntxuav khoom noj. Hauv cov kua xab ua kua rau, HPMC muaj ntau txoj haujlwm.
1. Thickening
Ib qho ntawm qhov tseem ceeb tshaj plaws siv HPMC yog qhov tuab dua. Cov tshuaj ntxuav ua kua feem ntau yuav tsum muaj viscosity uas haum kom ntseeg tau tias lawv yooj yim ntawm kev siv thiab cov txiaj ntsig zoo. Tsawg dhau lub viscosity yuav ua rau cov xab npum ua kua thiab nyuaj rau kev tswj tau thaum siv; Thaum siab heev viscosity yuav cuam tshuam rau kev tawg thiab solubility ntawm cov khoom.
HPMC tuaj yeem tuav cov viscirecosity me ntsis rau cov tshuaj ntxuav ua kua los ntawm kev sib sau dej-soluble colloidal network qauv. Nws cov solubility hauv dej thiab cov viscoelastic nws ua kom nws pab tau cov tshuaj nyob ruaj khov uas tsis cuam tshuam nws cov khoom sib txawv. Qhov no thickening cov nyhuv tuab tsis tsuas yog siv kev xav thiab siv lwm yam khoom xyaw ntawm cov mis (xws li surfacive thiab cov ntxhiab) kom muaj tusyees me ntsis hauv cov kua.
2. Ncua Qiv Stabilizer
Hauv cov tshuaj ntxuav ua kua, muaj ntau yam khoom xyaw (xws li tshuaj dawb (enzymes, abrasivesives lossis lwm yam khoom xyaw nquag) yuav khom vim qhov sib txawv. Raws li tus neeg tsis yooj yim, HPMC tuaj yeem tiv thaiv cov sedimently ntawm cov khoom siv lossis tsis muaj peev xwm ua kom cov tshuaj ntxuav tes ua ke los ua cov khoom xyaw ua ke nyob thaum lub sijhawm khaws cia thiab siv. Qhov no yog qhov tshwj xeeb tshaj yog rau kev xab npum, tshuaj dawb lossis ua kom cov khoom noj kom zoo ntxiv rau cov khoom tu ntawm cov khoom.
Kev daws ntawm HPMC muaj Pseudoplastic ntws cov yam ntxwv, thaum lub siab viscosity (xws li muab cov tshuaj ntxuav), uas tso cai rau cov xab npum kom nyob hauv lub xeev zoo li qub , tab sis yooj yim ntws thaum siv.
3. Zaj duab xis-tsim thiab tiv thaiv cov teebmeem
HPMC muaj kev ua yeeb yaj kiab zoo-tsim cov khoom, uas ua rau nws ua yeeb yaj kiab tiv thaiv saum npoo ntawm cov khaub ncaws lossis khoom thaum lub sijhawm ntxuav. Zaj yeeb yaj kiab no tuaj yeem ua tau ntau lub luag haujlwm: ua ntej, nws tuaj yeem tiv thaiv cov khaub ncaws hnav los ntawm cov neeg kho tshuab hnav thaum lub sijhawm ntxuav; Thib ob, tom qab zaj duab xis tsim, nws pab txhawm rau saib xyuas lub sijhawm sib ze ntawm cov tshuaj lom neeg hauv cov xab npum thiab cov stains, li kev txhim kho kom huv. Rau cov tshuaj ntxuav tawm tshwj xeeb, xws li cov khoom muag lossis cov neeg sawv cev tawm tsam ntawm HPMC tuaj yeem ua rau cov khoom siv HPMC tuaj yeem ua rau cov khoom siv ntawm cov khoom siv no, ua khaub ncaws khaub ncaws hnav thiab ua kom huv.
4. Kev tswj cov khoom siv ua npuas ncauj
Ua npuas ncauj thiab kev tswj hwm yog ib qho ntawm cov ntsiab lus tseem ceeb hauv xab npum tsim qauv. HPMC tuaj yeem ua lub luag haujlwm hauv cov kev cai ua npuas dej hauv cov xab npum. Txawm hais tias HPMC nws tus kheej tsis tsim ua npuas dej, nws tuaj yeem tsis ncaj rau tiam thiab kev ruaj khov ntawm ua npuas ncauj los ntawm kev kho cov khoom siv rheological thiab solubility ntawm lub system. Rau qee cov ntawv thov uas yuav tsum tau ua npuas dej tsawg (xws li siv tshuab ntxuav tais diav tsis siv neeg tsis siv neeg HPMC tuaj yeem pab tswj qhov siab thiab xyuas kom haum ntawm lub tshuab. Rau cov qauv uas yuav tsum tau ua npuas dej nplua nuj, HPMC tuaj yeem pab tswj cov npo thiab txuas ntxiv nws lub sijhawm muaj.
5. Txhim kho cov khoom lag luam ruaj khov thiab lub txee txee
Cov tshuaj ntxuav ua kua yuav muaj ntau yam enzymes nquag ua haujlwm, oxidants lossis tshuaj dawb, uas yog qhov nyuaj rau kev ruaj ntseg ntawm cov qauv. Lub xub ntiag ntawm HPMC tuaj yeem txhim kho cov kev sib cais ntawm cov khoom xyaw tsis ruaj khov thiab tiv thaiv kev hloov pauv ntawm lub cev, ncua kev kawm ntawm cov tshuaj. Tsis tas li ntawd, HPMC kuj tseem tuaj yeem qeeb ntawm cov neeg muaj kev cuam tshuam qeeb ntawm cov khoom xyaw ua ke rau qee yam, yog li txuas cov txee lub neej ntawm cov khoom. Qhov no yog qhov tshwj xeeb tshaj plaws rau cov tshuaj tivthare uas muaj cov khoom xyaw muaj hluav taws xob muaj zog, uas tuaj yeem ua kom cov khoom siv ntxuav nws lub neej tsim.
6. Kev tiv thaiv ib puag ncig thiab biodegradability
HPMC yog ib qho derivative muab tau los ntawm ntuj cellulose nrog kev tiv thaiv zoo thiab kev tiv thaiv ib puag ncig. Piv nrog rau lwm cov synthesters thickeners lossis stabilizers, HPMC tuaj yeem tawm tsam los ntawm cov kab mob hauv aqueous, yog li txo qhov cuam tshuam rau ib puag ncig. Nrog kev txhim kho ntawm ib puag ncig kev paub txog ib puag ncig thiab saib xyuas kom muaj cov khoom siv raw khoom siv xws li HPMC los txo cov hneev taw kev sib tw ntawm lawv cov khoom lag luam.
7. Kho cov ntawv nyeem thiab siv cov kev paub ntawm cov xab npum
Lub thickening nyhuv ntawm HPMC tsis yog cuam tshuam rau cov khoom viscosity ntawm cov khoom, tab sis kuj txhim kho kev siv cov tshuaj ntxuav ua kua. Los ntawm kev tsim kho kom zoo nkauj thiab hnov ntawm cov xab npum, HPMC ua rau cov khoom lag luam zoo dua thiab yooj yim siv. Tshwj xeeb tshaj yog nyob rau hauv high-kawg xab-kawg xab npum ua qauv, kev siv HPMC tuaj yeem nqa cov smoother thiab ntau dua cov khoom siv nplua, yog li kev txhim kho cov neeg noj khoom haus txaus siab. Tsis tas li ntawd, cov dej solubility ntawm HPMC ua rau nws yooj yim yaug tom qab siv tsis tas yuav tawm ntawm cov khaub ncaws lossis chaw.
HPMC tau dav siv hauv cov kua dej ua kua, ua ke ntau lub zog xws li thickeners, niefers, thiab ua npuas ncauj regulators. Nws tsis tuaj yeem txhim kho kev ruaj khov thiab ua tau zoo ntawm cov neeg siv khoom noj kom tau cov khoom siv niaj hnub los ntawm kev tiv thaiv ib puag ncig thiab biodegradability. Hauv kev txhim kho yav tom ntej ntawm xab npum, HPMC yuav txuas ntxiv ua cov khoom lag luam tseem ceeb los pab cov khoom ua haujlwm thiab teb rau kev xav ua lag luam.
Lub Sijhawm Post: Oct-12-2024