Cov cellulose ethers feem ntau yog siv ua cov khoom ntxiv rau hauv cov gypsum-based mortars los txhim kho ntau yam khoom thiab kev ua tau zoo. Cov hauv qab no yog qee qhov kev siv tshwj xeeb ntawm cellulose ethers hauv gypsum mortar:
Kev khaws dej:
Cellulose ethers yog cov polymers hydrophilic, txhais tau tias lawv muaj kev sib raug zoo rau dej. Thaum ntxiv rau hauv cov plaster mortars, lawv khaws cov dej noo thiab tiv thaiv cov khoom sib xyaw kom tsis txhob qhuav sai dhau. Qhov no yog qhov tseem ceeb kom ntseeg tau tias cov plaster muaj sijhawm txaus los hydrate kom zoo thiab txhim kho kev ua haujlwm.
Kev ua tau yooj yim thiab yooj yim ntawm kev siv:
Cov khoom siv khaws dej ntawm cellulose ethers pab txhim kho kev ua haujlwm ntawm gypsum mortar. Mortar yooj yim dua rau kev sib tov, nthuav dav thiab siv, ua rau cov txheej txheem kev tsim kho du thiab ua haujlwm tau zoo dua.
Txo qhov ntsws:
Cov cellulose ethers pab tswj qhov qhuav ntawm cov gypsum mortars. Los ntawm kev tswj cov dej txaus thaum lub sijhawm teeb tsa thiab ziab, cellulose ethers pab txo qhov tawg ntawm qhov ntsws thiab xyuas kom meej qhov ruaj khov ntawm cov khoom tiav.
Txhim kho kev sib txuas:
Cov cellulose ethers ua rau kom cov gypsum mortar lo rau ntau yam substrates, suav nrog phab ntsa thiab qab nthab. Qhov no tseem ceeb heev rau cov ntawv thov xws li plastering thiab rendering, qhov twg kev sib txuas ruaj khov yog qhov tseem ceeb rau kev ruaj khov thiab lub neej ntev ntawm qhov chaw tiav.
Kev tiv thaiv tawg:
Ntxiv cov cellulose ether tuaj yeem txhim kho qhov kev tiv thaiv kab nrib pleb ntawm cov mortar. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv cov cheeb tsam uas muaj kev txav mus los ntawm cov qauv lossis qhov twg cov mortar yuav raug kev nyuaj siab, xws li cov khoom sib koom ua ke thiab cov txheej putty.
Tiv thaiv kev qaug zog:
Hauv kev siv ntsug, xws li cov plasters phab ntsa, cellulose ethers ua haujlwm ua cov khoom ua kom tuab, txo qhov sag thiab slumping ntawm cov mortar. Qhov feature no pab tswj kom tuab sib npaug ntawm cov nto ntsug, txhim kho qhov zoo nkauj thiab kev ua tau zoo ntawm daim ntawv thov kawg.
Txhim kho kev sib koom ua ke:
Cov cellulose ethers pab txhawb rau kev sib koom ua ke ntawm cov khoom sib xyaw ua ke, txhim kho nws cov qauv kev ua kom zoo. Qhov no yog qhov tseem ceeb hauv cov ntawv thov uas cov khoom sib xyaw ua ke yuav tsum tiv taus cov zog sab nraud lossis kev ntxhov siab.
Kev ruaj khov thiab yaj:
Cov cellulose ethers tuaj yeem ua kom lub zog khov-thaw ntawm cov gypsum mortars txhim kho, ua rau lawv tiv taus kev puas tsuaj ntau dua hauv cov chaw uas muaj qhov kub thiab txias hloov pauv. Qhov no tseem ceeb heev rau cov ntawv thov kev tsim kho uas raug rau huab cua hnyav.
Ntev lub sijhawm teeb tsa:
Siv cov cellulose ethers tuaj yeem ua rau lub sijhawm teeb tsa ntawm cov plaster mortar ntev dua, ua rau muaj kev ywj pheej ntau dua hauv kev siv thiab kev ua tiav. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej uas xav tau sijhawm ua haujlwm ntev dua.
Cov khoom rheological zoo dua:
Cov cellulose ethers pab txhawb rau cov khoom rheological ntawm cov mortar, cuam tshuam rau nws cov yam ntxwv ntws thiab deformation. Qhov no pab ua tiav qhov sib xws thiab kev ua haujlwm ntawm daim ntawv thov.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias hom thiab koob tshuaj ntawm cellulose ether siv thiab cov qauv ntawm cov gypsum mortar yuav tsum tau txiav txim siab zoo kom ua tiav cov txiaj ntsig xav tau hauv ib daim ntawv thov. Cov chaw tsim khoom feem ntau ua qhov kev sim thiab kev ua kom zoo dua los txiav txim siab cov ntsiab lus cellulose ether zoo tshaj plaws rau lawv cov khoom tshwj xeeb thiab kev siv.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-24-2023