Hauv kev tsim kho niaj hnub, nrog kev nce qib nruam ntawm thev naus laus zis, cov ntaub ntawv tshiab txuas ntxiv tawm, ntxiv txhim kho kev ua tau zoo thiab ua tau zoo ntawm kev tsim kho. HydroxyPropy cellulose (HPMC), raws li lub tsev tseem ceeb ntxiv, yog siv dav hauv cov ntaub ntawv hauv tsev vim nws qhov kev ua tau zoo. HPMC tsuas yog siv nyob rau hauv cov ntaub ntawv ua haujlwm qhuav xws li mortars, tsho loj, thiab ua kom hmoov. Nws txhim kho qhov zoo thiab kev ua haujlwm ntawm cov ntaub ntawv tsim tsev los ntawm nws lub cev thiab tshuaj siv tshuaj lom neeg.
1. Cov khoom ntawm HPMC
HPMC yog cov tsis-iona cellulose ether nrog cov dej ua kom zoo thiab tshuaj lom neeg ruaj khov. Hauv cov ntaub ntawv hauv tsev, nws tuaj yeem nqus dej, swell, yaj thiab tsim cov tshuaj colloidal. Vim tias muaj cov qauv siv methyl thiab methyl thiab Hydroyl thiab HPMC muaj cov dej ua kom zoo, thickening thiab ua yeeb yam-ua yeeb yam khoom. Cov khoom no ua si lub luag haujlwm tseem ceeb hauv kev siv cov ntawv thov.
Dej ceev
HPMC tuaj yeem txhim kho cov dej ua kom ua tau zoo ntawm cov ntaub ntawv tsim tsev. Nyob rau hauv collab lossis putty hmoov, HPMC qeeb qeeb ntawm cov dej evaporation ntawm cov dej los ntawm kev nqus dej thiab tsim ib qho kev sib xyaw. Cov txiaj ntsig khaws cia hauv cov dej no yuav pab txhim kho cov khoom sib khi ntawm lub tshuaj khib thiab tiv thaiv kev tawg thiab ua kom qhuav los ntawm ziab ntxov. Tshwj xeeb tshaj yog nyob rau hauv cov kev kub-ib puag ncig, cov dej-khaws cia kev ua haujlwm ntawm HPMC tshwj xeeb yog ib qho tseem ceeb. Nws tuaj yeem xyuas kom cov ntaub ntawv tau tso dej txaus thaum kho thiab kho kom zoo, thiab txhim kho cov khoom lag luam zoo.
Sam xim
HPMC muaj cov nyhuv zoo heev thiab tuaj yeem nce cov viscosity ntawm cov ntaub ntawv hauv tsev, ua rau nws ua haujlwm yooj yim rau kev tsim kho. Hauv cov hmoov ua kom muaj hmoov lossis pleev xim, HPMC yog siv los ua cov tuab kom ua rau cov khoom siv muaj kev tsim kom haum thiab muaj zog yam tsis muaj dilute dhau los lossis nplaum. Nyob rau tib lub sijhawm, nws cov nyhuv tuab tuaj yeem txhim kho kev tiv thaiv kev ua haujlwm los tiv thaiv cov khoom. Thaum lub sij hawm coating kev tsim kho, nws tuaj yeem tiv thaiv kom tiv thaiv phab ntsa thiab txhim kho qhov smoothness ntawm txheej.
Zaj Duab Xis Taus Vaj Tsev
HPMC yuav tsim ib zaj yeeb yaj kiab yooj yim hauv kev daws teeb meem, uas tseem muaj qee qhov kev hloov zuj zus thiab cov nplaum tom qab ziab. Nyob rau hauv cov tsho me lossis neeg nplua nuj, zaj duab xis-tsim cov khoom ntawm HPMC tuaj yeem txhim kho cov khoom tsis kam thiab dej tsis kam thiab dej ntawm cov khoom. Hauv sab nrauv phab ntsa tsho tiv thaiv phab ntsa, zaj duab xis-tsim cov nyhuv ntawm HPMC kuj tseem tuaj yeem txhim kho cov huab cua tsis kam ntawm lub neej ntawm lub tsev.
2. Cov kev cuam tshuam tshwj xeeb ntawm HPMC ntawm kev ua tau zoo ntawm cov ntaub ntawv tsim tsev
Daim ntawv thov nyob rau hauv cug
HPMC feem ntau yog siv nyob rau hauv cov tshuaj khib kom txhim kho nws cov dej khaws cia thiab ua haujlwm. Cho tshuaj zoo heev yog nquag muaj teeb meem xws li kev tawg thiab poob thaum tsim kho vim tias nws cov dej yaj yooj yim. Tom qab ntxiv HPMC, cug tshuaj yuav ua kom muaj kev txuag dej zoo, yog li ua kom muaj dej txaus rau cov cement hauv ib puag ncig. Tsis tas li ntawd, HPMC tseem tuaj yeem txhim kho flucity thiab adhesion ntawm kev sib tov, ua kom yooj yim dua kom kis tau tusyees thaum tsim kho thiab txo qhov kev tsim kho thiab txo qis ntawm voids thiab tawg.
Daim ntawv thov nyob rau hauv putty hmoov
Putty hmoov yog ib qho khoom tseem ceeb rau phab ntsa leveling thiab feem ntau yuav tsum tau ua haujlwm zoo thiab cov khoom nplaum. Lub luag haujlwm ntawm HPMC hauv cov hmoov putty yog thawj zaug los ntawm kev tsim kho thiab tso cai rau lub sijhawm ua haujlwm ntev dua, ua kom yooj yim dua rau lub tsev ua kom haum. Tsis tas li ntawd, HPMC tseem tuaj yeem txhim kho cov nplaum ntawm putty hmoov kom nws yoog kom khov kho rau phab ntsa saum npoo av thiab txo qhov tau poob tawm tom qab.
Daim Ntawv Thov nyob rau hauv Pobzeb Adhesive
Nyob rau hauv ceramic pobzeb nplaum, HPMC ua si lub luag haujlwm ntawm thickening thiab dej khaws cia. Nws tuaj yeem xyuas kom meej tias cov nplais nplaum nplaum muaj cov qauv tsim kho thaum lub sijhawm tsim kho, ua kom yooj yim dua rau tus tsim kho cov vuas luaj ntawm cov vuas uas siv tau yooj yim. Ib qho ntxiv, vim nws cov dej zoo khaws cia, HPMC tuaj yeem ncua cov dej tsis muaj zog yog qhov ua kom cov txheej txheem tawv, thiab txhim kho nws lub zog kawg ntawm lub zog thiab kev ua haujlwm ntev.
Cov ntawv thov nyob rau hauv txheej
Raws li cov tuab tuab thiab ua haujlwm khov kho, HPMC tuaj yeem txhim kho cov kev sib txuam thiab kev tiv thaiv cov teeb meem xws li sagging thiab sagging tom qab tsim kho. Nyob rau tib lub sijhawm, cov yeeb yaj kiab ua yeeb yam ntawm HPMC pab cov txheej txheem los ua cov yeeb yaj kiab tuab tom qab ziab, txhim kho cov huab cua tsis kam thiab sib txuas ntawm cov txheej. Tsis tas li ntawd, cov dej-khaws cov khoom ntawm HPMC kuj pab ncua kev ziab ntawm txheej, tso cai rau cov khoom sib xyaw ua ke kom muaj kev faib tawm.
3. Qhov zoo thiab cov nyom ntawm HPMC hauv cov ntaub ntawv sib txawv hauv tsev
Qhov Zoo
Daim ntawv thov ntawm HPMC hauv cov ntaub ntawv tsim tsev muaj qhov tseem ceeb zoo. Nws cov dej zoo khaws cia thiab cov nyhuv tuab tuaj yeem txhim kho cov kev ua haujlwm ntawm cov khoom siv thiab txo cov teeb meem zoo xws li kev tawg thiab ua haujlwm. Tsis tas li ntawd, HPMC muaj cov tshuaj muaj zog ruaj khov thiab tuaj yeem hloov kho rau ntau qhov chaw tsim khoom tsis muaj kev txiav txim siab lossis tsis zoo, yog li ua kom muaj kev ntseeg tau ntawm cov khoom.
cav
Txawm li cas los xij, kev siv HPMC tseem ntsib qee yam kev cov nyom. Ua ntej, vim nws tus nqi siab, tshwj xeeb tshaj yog nyob rau hauv kev tsim khoom loj, kev siv HPMC yuav nce nqi. Qhov thib ob, siv ntau dhau ntawm HPMC tuaj yeem nthuav lub sijhawm kho tsev thiab cuam tshuam kev txhim kho kev ua haujlwm. Tsis tas li ntawd, kev ua tau zoo ntawm HPMC nyob rau hauv tshwj xeeb ib puag ncig (xws li huab cua txias heev lossis kub siab dua) yuav tsum tau ua kom zoo dua rau kev hloov kho ntau lub tsev.
Raws li ib qho tseem ceeb tsim Additive, HPMC ua si lub luag haujlwm tseem ceeb hauv kev txhim kho qhov zoo thiab kev tsim kho cov ntaub ntawv hauv tsev. Nws cov dej khaws cia, thickening thiab ua yeeb yam-ua yeeb yam tso cai rau HPMC kom ua tau zoo ntawm lub cev cug, pleev xim thiab txhim kho kev tsim kho zoo thiab cov khoom siv ruaj khov. Txawm li cas los xij, nrog kev txhim kho txuas ntxiv ntawm kev siv kev tsim kho, kev ua kom tau zoo ntawm HPMC thaum ua kom zoo tshaj yog ib qho tseem ceeb hauv kev tshawb fawb yav tom ntej thiab application.
Lub Sijhawm Post: Feb-17-2025