Cov hmoov txhuv nplej siab ether feem ntau yog siv hauv kev tsim mortar, uas tuaj yeem cuam tshuam qhov sib xws ntawm mortar raws li gypsum, cement thiab txiv qaub, thiab hloov kev tsim kho thiab sag kuj ntawm mortar. Cov hmoov txhuv nplej siab ethers feem ntau yog siv ua ke nrog cov tsis hloov pauv thiab hloov kho cellulose ethers. Nws yog haum rau ob qho tib si nruab nrab thiab alkaline systems, thiab yog sib xws nrog feem ntau additives nyob rau hauv gypsum thiab cement khoom (xws li surfactants, MC, starch thiab polyvinyl acetate thiab lwm yam dej-soluble polymers).
Cov yam ntxwv tseem ceeb:
(1) Cov hmoov txhuv nplej siab ether feem ntau yog siv ua ke nrog methyl cellulose ether, uas qhia tau hais tias muaj txiaj ntsig zoo ntawm ob qho tib si. Ntxiv qhov tsim nyog ntawm cov hmoov txhuv nplej siab ether rau methyl cellulose ether tuaj yeem txhim kho qhov sag kuj thiab plam tsis kam ntawm mortar, nrog rau cov txiaj ntsig siab.
(2) Ntxiv qhov tsim nyog ntawm cov hmoov txhuv nplej siab ether rau hauv cov tshuaj khib nyiab uas muaj methyl cellulose ether tuaj yeem ua rau muaj qhov sib xws ntawm cov mortar thiab txhim kho cov dej ntws zoo, ua rau kev tsim kho smoother thiab scraping smoother.
(3) Ntxiv qhov tsim nyog ntawm cov hmoov txhuv nplej siab ether rau hauv mortar uas muaj methyl cellulose ether tuaj yeem ua rau kom cov dej tuav ntawm cov tshuaj khib thiab ua kom lub sijhawm qhib.
(4) Cov hmoov txhuv nplej siab ether yog cov tshuaj hloov pauv cov hmoov txhuv nplej siab ether soluble hauv dej, sib xws nrog lwm cov khoom ntxiv hauv cov hmoov qhuav mortar, dav siv hauv cov pobzeb nplaum, kho cov mortar, plaster plaster, sab hauv thiab sab nrauv phab ntsa putty, gypsum-based embedded Joints thiab sau cov ntaub ntawv. , interface agents, masonry mortar.
Cov yam ntxwv ntawm cov hmoov txhuv nplej siab ether feem ntau nyob hauv: (a) txhim kho sag kuj; (b) txhim kho kev ua haujlwm; (c) txhim kho cov dej tuav tus nqi ntawm mortar.
Kev siv ntau yam:
Cov hmoov txhuv nplej siab ether yog tsim rau txhua yam ntawm (cement, gypsum, txiv qaub-calcium) sab hauv thiab sab nrauv phab ntsa putty, thiab txhua yam ntawm mortar thiab plastering mortar.
Nws tuaj yeem siv los ua cov khoom sib xyaw rau cov khoom siv cement, cov khoom siv gypsum thiab cov khoom txiv qaub-calcium. Cov hmoov txhuv nplej siab ether muaj kev sib raug zoo nrog lwm cov kev tsim kho thiab cov khoom sib xyaw; nws yog qhov tshwj xeeb tshaj yog tsim rau kev tsim cov khoom sib xyaw qhuav xws li tshuaj khib, nplaum, plastering thiab dov cov ntaub ntawv. Cov hmoov txhuv nplej siab ethers thiab methyl cellulose ethers (Tylose MC qib) yog siv ua ke hauv kev tsim kho cov khoom sib xyaw kom pom cov thickening ntau dua, cov qauv muaj zog, sag kuj thiab yooj yim ntawm kev tuav. Lub viscosity ntawm mortars, adhesives, plasters thiab yob renders uas muaj ntau dua methyl cellulose ethers yuav txo tau los ntawm kev ntxiv ntawm starch ethers.
Post lub sij hawm: Jun-13-2023