Kev tsim kho-meej Holdroxypropylropen cov khoom yog dav siv los txhim kho kev ua tau zoo ntawm cov ntaub ntawv hauv tsev, xws li cement thiab gypsum. Hauv cov centary-raws li kev nplua nuj, nws txhim kho cov dej khaws cia, ncua kev kho kom zoo thiab qhib lub sijhawm, thiab txo sagging.
1. Dej khaws cia.
Kev tsim kho-meej hydroxypropyf methylcellulose tiv thaiv ya raws los ntawm kev nkag mus rau hauv phab ntsa. Tus nqi uas tsim nyog ntawm cov dej nyob hauv lub tshuaj khib, tso cai rau cov cement rau hydrate ntev dua. Cov dej rov qab ua haujlwm yog ib qho sib xws ntawm cov viscosity ntawm cellulose ether daws nyob rau hauv lub tshuaj khib. Qhov siab dua viscosity, qhov zoo dua cov dej khaws cia. Thaum cov dej lwg me me ntxiv, cov dej rov qab ua kom tsawg dua. Vim tias rau tib tus nqi ntawm lub tsev-tshwj xeeb hydroxypropyl metyrcellulose tshuaj, nce ntxiv hauv dej txhais tau tias tsawg hauv viscosity. Cov dej rov qab nce ntxiv yuav ua rau lub sijhawm kho lub sijhawm ntev dua ntawm cov tshuaj khib ua tsim.
2. Txhim kho kev ua haujlwm.
Daim ntawv thov ntawm hydroxypropyl methylcellose HPMC tuaj yeem txhim kho qhov ua haujlwm ntawm cug.
3. Lub peev txheej.
Txhua tus neeg sawv cev huab cua-Entraining ua raws li kev ntub dej los ntawm kev txo cov hmoov kom nruj thiab pab cov hmoov zoo hauv lub colle thaum sib xyaw nrog dej.
4. Anti-Sag
Ib qho zoo anti-sag cug txhais tau tias muaj tsis muaj kev phom sij ntawm sagging lossis qis dua ntws thaum ua ntawv thov txheej txheej tuab. Lub sag tiv thaiv tuaj yeem txhim kho los ntawm kev tsim kho-tshwj xeeb hydroxypropyl methylulose. Tshwj xeeb, cov tshiab tsim kev tsim kho-tshwj xeeb hydroxypropylropen tuaj yeem muab tshuaj cug nrog zoo dua los tiv thaiv cov khoom siv.
5. Cov ntsiab lus npuas
Cov ntsiab lus npuas siab tau ua rau zoo cug cov lus pom thiab ua haujlwm, txo kev nruam. Nws tseem yuav txo tus nqi muaj zog thiab ua rau "liquefaction" tshwm sim. Cov npuas cov ntsiab lus feem ntau yog nyob ntawm lub sijhawm sib xyaw.
