Nyob rau hauv xyoo tsis ntev los no, kev siv ntawm hydroxypropylulose (HPMC) hauv kev tsim kho kev tsim kho tau dhau los ua nws cov kev sib txawv. HPMC yog cov tsis-ionic cellulose Eteting feem ntau siv los ua cov khoom ntxiv hauv cov khoom lag luam gypsum los txhim kho lawv cov khoom.
Gypsum tau dhau los ua cov khoom siv dav siv hauv kev tsim kho vim nws cov hluav taws kub tiv thaiv kev tiv thaiv hluav taws kub, lub suab rwb thaiv tsev, thiab cua sov. Txawm li cas los xij, gypsum cov khoom lag luam muaj feem ntau rau shrinkage, tawg, thiab xav tau lub sijhawm ntev teeb tsa. Nov yog qhov chaw HPMC los ua si, raws li nws tuaj yeem pab txhim kho cov khoom ntawm plaster cov khoom lag luam, xws li txhim kho lawv cov haujlwm, qhov chaw zoo thiab ua tau zoo.
Lub luag haujlwm tseem ceeb ntawm HPMC hauv Gypsum yog los ua tus neeg saib xyuas tuab. Yog li ntawd, nws txhim kho cov haujlwm ntawm cov khoom lag luam gypsum, ua kom yooj yim dua rau cov neeg ua haujlwm thov nws rau phab ntsa, nthab lossis plag tsev. HPMC ua cov txheej tiv thaiv ib ncig ntawm txhua hom gypsum particle, uas txhais tau tias nws nce viscosity ntawm cov khoom thiab txo cov kev nyiam ntawm clumping. Tsis tas li ntawd, HPMC kuj nce ntxiv cov txiaj ntsig kev ntxhov siab, ua rau cov khoom lag luam gypsum tsis tshua muaj kev txiav tawm thaum siv.
Lwm qhov txiaj ntsig zoo ntawm kev siv hpmc hauv plaster yog nws lub peev xwm khiav tau zoo. Kev siv HPMC nce peev muaj peev xwm ua kom muaj peev xwm kav dej ntawm Gypsum cov khoom lag luam thiab tuaj yeem siv los tswj lub sijhawm teem sijhawm ntawm cov khoom. HPMC ua ib qho gel-zoo li network uas cuab cov dej sib xyaw nyob rau hauv cov khoom siv plaster, yog li maj mam muab cov neeg ua haujlwm ntxiv rau cov khoom ua ntej nws ua rau tawv tawv. Qhov no muab cov kev teeb tsa ntau dua thiab tseem muaj tseeb dua thiab tseem faib khoom ntawm cov chaw sib txawv, txhim kho qhov pom ntawm daim ntawv thov sib txawv.
HPMC kuj ua raws li tus neeg sawv cev ntawm Coalescing, pab kom nce kev sib xws ntawm cov khoom gypsum. HPMC molecules Coalesce los ua tus qauv tuab uas tuav cov khoom ntawm gypsum ua ke, txo txoj kev pheej hmoo ntawm kev tawg lossis shrinkage. Qhov no tseem ceeb heev kom paub meej txog qhov ntev ntawm koj cov txheej txheem plaster, raws li lawv yuav muaj cov qauv muaj zog uas hloov sijhawm dhau los, xws li kev hloov pauv ntawm qhov kub thiab cua noo.
Lwm cov cuab yeej ntawm HPMC uas ua rau nws haum rau siv nyob rau hauv lub plaster kev lag luam yog nws cov adhesion zoo. HPMC cov foos yuav muaj kev sib raug zoo ntawm Gypsum cov khoom lag luam thiab cov txheej txheem, kom ua kom muaj txiaj ntsig yuav tsis tev lossis txuas los ntawm qhov chaw uas nws tau thov. HPMC cov nplaum siab tseem tso cai rau qhov zoo dua saum npoo ntawm gypsum khoom raws li nws tuav cov khoom hauv qhov chaw lossis tsis sib xws ntawm qhov chaw.
Txij li thaum HPMC yog tsis muaj tshuaj lom, nws siv nyob rau hauv plaster cov ntawv thov yog qhov pom zoo heev. HPMC yog muab tau los ntawm cov ntoo ntoo ntuj thiab tsis muaj tshuaj puas, ua rau nws muaj kev phom sij rau kev teeb tsa ntawm gypsum.
HPMC tau tshaj tawm ntau yam ntawm lwm cov ntaub ntawv hauv tsev, lub ntsiab lus nws tuaj yeem siv ua ke nrog lwm cov khoom lag luam sib ntxiv thiab cov tsim khoom tsim cov khoom lag luam customized uas tau raws li cov kev xav tau. Siv kom zoo dua ntawm cov cuab yeej no, cov chaw tsim khoom tuaj yeem tsim ntau hom kev sib txawv ntawm cov khoom lag luam gypsum nrog cov khoom siv sib txawv, cov sijhawm tsim nyog rau ntau yam kev siv thiab ib puag ncig cov kev cai.
HydroxyPropyyl methylcellose (HPMC) yog qhov tseem ceeb ntxiv hauv kev tsim kho, ua rau muaj txiaj ntsig zoo rau kev ua haujlwm, kav dej ntawm plaster cov ntawv thov. Nws lub peev xwm los ua tuab, tuav tseg dej, txhim kho kev sib txawv, thiab muab cov khoom sib txawv, thiab cov khoom sib txawv nrog kev xaiv rau cov khoom lag luam zoo plaster. Kev siv HPMC kuj tau txhawb kev tsim kho los ntawm kev nce qib ntxiv los ntawm kev nce qib ntxiv thiab ua haujlwm, txuag lub sijhawm thiab txo qhov xav tau kev saib xyuas nquag.
Lub Sijhawm Post: Feb-19-2025