HPMC (HydroxyPropy cellulose cellulose) hauv kev sib xyaw qhuav yog ib qho tseem ceeb hauv cov khoom siv hauv tsev los txhim kho lawv cov kev ua haujlwm. HPMC yog cov tsis-ionic cellulose eter ua los ntawm cov cellule hloov cellulose. Nws muaj cov dej ua kom zoo heev, lub sijhawm ua kom lub zog, lubrication thiab tsev pheeb suab ntaub, uas ua rau nws ua lub luag haujlwm tseem ceeb hauv kev sib xyaw qhuav.
1. Thickening nyhuv
HPMC muaj cov nyhuv zoo heev thiab tuaj yeem txhim kho lub viscosity thiab anti-sagging tej yam ntawm cug. Los ntawm kev ntxiv hpmc mus rau lub tshuaj khib, qhov sib xyaw ntawm cug ua haujlwm tau nce, tshwj xeeb yog thaum nws yog ntawm ib qho chaw ntsug, nws tsis yooj yim rau SAG. Qhov no yog qhov tseem ceeb heev los xyuas kom meej tias kev tsim kho zoo, tshwj xeeb tshaj yog thaum tsim nyob rau hauv ib puag ncig kub ntau, HPMC pab tswj kom ruaj khov thiab ua haujlwm ntawm lub cug.
2. Dej ceev ceev
Cov khoom siv dej khaws cia ntawm HPMC yog ib qho ntawm nws cov haujlwm tseem ceeb tshaj plaws hauv kev sib xyaw qhuav. Thaum lub sijhawm ua haujlwm ntawm cug, yog tias cov dej yaj sai heev, nws yog qhov yooj yim los ua kom muaj kev sib xyaw tsis txaus ntawm cov cement, yog li cuam tshuam lub zog thiab durability ntawm cug. HPMC muaj lub peev xwm ua kom muaj zog muaj zog thiab tuaj yeem tsim cov yeeb yaj kiab nyias nyias nyob hauv lub zog ua kom txo cov hmoov av, ua kom muaj zog txaus thiab lub zog cug tom qab ua kom tawv. Qhov kev tswj kav dej khaws cia yog pom tseeb tshwj xeeb hauv qhov kub thiab qhuav, uas tuaj yeem txhim kho lub coob tsis taus thiab kev sib khib ntawm cug.
3. Txhim kho kev tsim kho kev tsim kho
HPMC tuaj yeem txhim kho kev tsim kho kev tsim kho ntawm cov tshuaj nplaum qhuav qhuav. Nws tuaj yeem ua cug softer thiab yooj yim dua rau kev tsim, txo kev ua haujlwm tiv thaiv, thiab ua kom cov txheej txheem kev tsim kho smoother. Los ntawm kev txhim kho lubricity cug, HPMC kuj tseem tuaj yeem txo kev sib txhuam thaum tsim kho thiab txo qhov kev siv zog ua haujlwm ntawm cov neeg ua haujlwm tsim khoom. Tsis tas li ntawd, HPMC tuaj yeem txhim kho kev tshuaj khib thiab ua haujlwm ntawm cov neeg ua haujlwm tsim nyog tsis txhob txhawj txog cov tshuaj khib nrawm dhau.
4. Los tiv thaiv kev lom zem thiab tiv thaiv drooping
Hauv kev tsim kho, tshuaj khib yog ntau dhau mus sagging raws li kev txiav txim ntawm kev sib tsoo, tshwj xeeb tshaj yog thaum ua ntawv siv cov tuab tuab. Lub thickening thiab dej-khaws cov khoom ntawm HPMC tuaj yeem tiv thaiv lub cug ntawm sagging thiab drooping, kom nws tswj hwm tus qauv zoo thiab qauv. Cov yeeb yam no yog qhov tshwj xeeb tshaj yog rau cov ntawv thov xws li cov tshuab plaster thiab phab ntsa av, uas tuaj yeem ntseeg qhov kev zoo nkauj thiab kev ruaj ntseg ntawm kev tsim kho.
5. Adhesion
HPMC txhim kho cov nplaum ntawm lub cug txheej, yog li nce cov nplaum ntawm lub tshuaj khib thiab tiv thaiv kev txhim kho lossis poob qis tom qab kev tsim kho. Qhov no yog qhov tshwj xeeb tshaj yog rau cov ntawv thov uas yuav tsum muaj zog siab, xws li tiling cort, plastering cort thiab thermal rwb thaiv tsev cug. Tsis tas li ntawd, HPMC tseem tuaj yeem txhim kho lub zog thaum ntxov ntawm lub zog ntawm lub zog thaum pib ntawm kev ua kom tawv nqaij tawv, txo qhov teeb meem hauv cov teeb meem tom qab.
6. Kev tawg tawm tsam
Vim tias cov dej-khaws cov nyhuv ntawm HPMC, nws pab txo cov qhov tshwm sim hauv lub tshuaj khib nyiab hauv lub nkoj tawm ntawm lub cug. Hauv cov txheej txheem tawv ntawm cov xis qab zib, cov dej tsis zoo yog qhov tseem ceeb heev. Dej nrawm nrawm tuaj yeem ua rau qhov tsis huv, uas nyeg ua rau tawg. HPMC tuaj yeem hloov kho cov dej cug hauv cov tshuaj khib, tiv thaiv cov kab nrib pleb tshwm sim los ntawm cov dej ntau dhau ntawm cov npoo av, thiab yog li txhim kho lub durability thiab tawg ntawm cug.
7. Daim ntawv thov Thaj Chaw
HPMC ua si lub luag haujlwm tseem ceeb hauv ntau cov kev siv ntawm cov tshuaj khib qhuav, suav nrog tab sis tsis txwv rau:
Pobzeb nplaum: Cov dej khaws cia thiab cov nplaum ntawm HPMC yog qhov tseem ceeb los xyuas kom cov vuas luaj li, tshwj xeeb tshaj yog nyob rau hauv daim ntawv thov loj loj vuas thiab tsis-nqus dej.
Plastering Cug: Lub thickening thiab dej khaws cia ntawm HPMC ua kom haum cov tshuaj ntsuab muaj kev tsim kho zoo thiab tawg ua kom cov plastering txheej txheem smoother.
Kev siv tshuaj tua kab tus kheej
Kev tswj tshuaj khib: hauv cov rwb thaiv tsev, HPMC ua kom muaj kev ncaj ncees thiab ruaj khov ntawm cov adhesion thiab yooj ntawm lub tshuaj khib.
8. Kev Siv
Qhov ntau npaum ntawm HPMC hauv kev sib xyaw qhuav-qhuav feem ntau yog tsawg, feem ntau ntawm 0.1%, thiab 0.5% tshwj xeeb yog nyob ntawm lub tshuaj khib thiab qhov ua tau zoo. Txawm hais tias qhov ntau npaum li cas yog me me, nws nyhuv ntawm lub tshuaj khib yog qhov tseem ceeb, tshwj xeeb tshaj yog nyob rau hauv kev txhim kho lub sijhawm, thiab txhim kho lub zog uas muaj zog thiab tawg.
9. Ib puag ncig ua phooj ywg
HPMC yog qhov tsis muaj tshuaj lom thiab tsis muaj kuab lom thiab tsis muaj zog thaum siv thiab muaj kev nyab xeeb rau ib puag ncig thiab cov neeg ua haujlwm tsim khoom. Tsis tas li ntawd, vim nws txoj kev cia dej zoo heev thiab tawg tsis kam, nws tuaj yeem txo cov peev txheej thiab cov khoom siv ua haujlwm, yog li tsis ncaj ncees txuag cov peev txheej thiab txo cov khoom siv ib puag ncig.
HPMC yog qhov tseem ceeb indispensable ua hauj lwm ua ntxiv nyob rau hauv qhuav-mak cug. Nws txhim kho cov kev ua tau zoo ntawm lub tshuaj khib los ntawm kev txhim kho cov dej khaws cia, thickening thiab ua haujlwm ntawm lub tshuaj khib, ua kom zoo dua qub. Nyob rau tib lub sijhawm, cov versatility ntawm HPMC ua rau nws dav siv nyob rau hauv ntau daim teb tsim hauv tsev thiab dhau los ua cov khoom tseem ceeb rau kev txhim kho kev tshuaj khib kev ua haujlwm thiab kev tsim kho.
Lub Sijhawm Post: Feb-17-2025