Phab ntsa stucco yog ib qho tseem ceeb ntawm niaj hnub architecture, muab qhov zoo tshaj plaws thiab zoo nkauj tiav rau phab ntsa. Cov khoom no feem ntau muaj ntau yam khoom xyaw xws li cement, xuab zeb thiab dej. Txawm li cas los xij, qhov sib ntxiv ntawm cellulose ether tau txais koob meej vim nws cov khoom tshwj xeeb, uas txhim kho kev ua haujlwm ntawm phab ntsa plasters hauv ntau txoj hauv kev. Cellulose ethers yog hydrocolloids muab los ntawm cov ntaub ntawv cog qoob loo uas tau siv dav los ua cov khoom siv ntxiv rau ntau yam kev siv, suav nrog cov txheej txheem phab ntsa plaster. Nyob rau hauv tsab xov xwm no, peb tham txog lub luag hauj lwm ntawm cellulose ether nyob rau hauv phab ntsa plaster formulations thiab yuav ua li cas nws yuav ua tau kom zoo ntawm phab ntsa plaster.
Txhim kho cov txheej txheem thiab ntub adhesion
Ib qho ntawm cov haujlwm tseem ceeb tshaj plaws ntawm cellulose ethers hauv phab ntsa plaster formulation yog tias nws txhim kho kev ua haujlwm ntawm plaster sib tov. Cellulose ethers yog heev soluble nyob rau hauv dej thiab thaum ntxiv rau lub phab ntsa plaster sib tov lawv tsim ib homogeneous thiab ruaj khov sib tov. Ntxiv cellulose ethers rau stucco mix txhim kho ntub adhesion, ua kom yooj yim rau siv cov stucco rau phab ntsa.
Txij li thaum cellulose ether yog cov dej-soluble polymer, nws ncua cov dej nqus ntawm cov phab ntsa plaster thiab yog li qeeb cov txheej txheem ziab. Cov cuab yeej no tso cai rau cov plaster kom nyob twj ywm ua haujlwm tau ntev dua, tso cai rau cov neeg tsim kom ua tiav cov npoo du. Qhov kev ncua sij hawm ntawm kev nqus dej no tseem yuav pab txo qis kev tawg thiab txhim kho tag nrho cov phab ntsa plaster zoo.
txo shrinkage
Phab ntsa plaster zoo li ntsws thaum nws qhuav, uas tuaj yeem ua rau tawg thiab lwm yam tsis xws luag. Kev siv cov cellulose ethers hauv stucco formulations yuav txo tau shrinkage ntawm phab ntsa plaster. Cellulose ether tsim ib homogeneous thiab ruaj khov sib xyaw nrog lwm cov khoom ntawm gypsum, uas yuav pab txo cov dej uas xav tau hauv qhov sib tov.
Txij li cov dej yog lub hauv paus ua rau shrinkage nyob rau hauv phab ntsa plaster, txo cov dej ntsiab lus yuav pab txo shrinkage. Qhov sib ntxiv ntawm cellulose ethers pab khaws noo noo nyob rau hauv lub stucco sib tov, yog li txo tag nrho shrinkage ntawm phab ntsa stucco.
Txhim kho cohesion thiab yooj
Cellulose ether tuaj yeem txhim kho qhov adhesion thiab yooj ntawm phab ntsa plaster. Cellulose ethers ua rau kom tag nrho cov cohesion ntawm gypsum sib tov los ntawm kev tsim ib tug ruaj khov thiab homogeneous sib tov. Lub xub ntiag ntawm cellulose ether kuj ua rau cov plaster sib tov hloov tau yooj yim, txo qhov kev pheej hmoo ntawm kev tawg thiab lwm yam tsis xws luag. Tsis tas li ntawd, cellulose ethers impart ib qho elasticity rau phab ntsa plasters, ua rau lawv muaj kev cuam tshuam ntau dua.
Txhim kho sag kuj
Sagging yog ib qho teeb meem tshwm sim thaum lub sij hawm tsim kho ntawm phab ntsa plasters, tshwj xeeb tshaj yog nyob rau hauv ntsug. Ntxiv cellulose ether rau qhov sib tov ntawm stucco tuaj yeem txhim kho sag kuj thiab ua rau cov stucco ruaj khov thaum siv. Cellulose ethers tsim ib qho sib xyaw, ruaj khov sib xyaw uas pab tiv thaiv plaster los ntawm zawv zawg ntawm phab ntsa. Cov cuab yeej no kuj ua rau plaster ntau resistant rau tawg thiab lwm yam tsis xws luag los ntawm sagging.
Txhim kho dej tsis kam
Cellulose ethers tuaj yeem txhim kho cov dej tsis kam ntawm phab ntsa plasters. Txij li thaum cellulose ether tsim ib homogeneous thiab ruaj khov sib xyaw nrog dej, nws tiv thaiv dej los ntawm kev nkag mus rau plaster. Cov cuab yeej no ua rau phab ntsa plaster ntau dua dej-resistant, uas yog qhov tseem ceeb rau cov chaw raug dej, xws li chav dej thiab chav ua noj.
txo lub sij hawm kom qhuav
Lub xub ntiag ntawm cellulose ethers nyob rau hauv phab ntsa plaster formulations kuj yuav txo tau lub sij hawm ziab ntawm plaster. Txij li thaum cellulose ether ncua kev nqus dej ntawm gypsum, nws ua rau qeeb ntawm cov txheej txheem ziab, cia cov gypsum qhuav ntawm tus nqi tswj ntau dua. Kev txo lub sij hawm ziab yog qhov zoo, tshwj xeeb tshaj yog nyob rau hauv qhov chaw ntub dej uas plaster yuav siv sij hawm ntev dua kom qhuav.
nyob rau hauv xaus
Hauv kev xaus, cellulose ethers yog ib qho tseem ceeb additives nyob rau hauv phab ntsa plaster formulations. Nws txhim khu kev ua haujlwm, ntub adhesion, cohesion, yooj, sag kuj, dej tsis kam thiab ziab lub sij hawm ntawm phab ntsa plasters. Kev siv cov cellulose ethers hauv phab ntsa plaster formulations yog ib qho kev daws teeb meem zoo rau ntau qhov kev sib tw uas tau ntsib thaum daim ntawv thov phab ntsa plaster. Raws li kev tsim kho kev lag luam txuas ntxiv mus ntxiv, kev siv cellulose ethers hauv phab ntsa plaster formulations yuav tsum nce ntxiv vim lawv cov khoom tshwj xeeb thiab cov txiaj ntsig.
Post lub sij hawm: Aug-04-2023