Gypsum sib txuas ua ke, tseem hu ua cov av qhuav av lossis sib txuas ua ke, yog cov khoom siv tsim kho hauv kev tsim kho thiab kho ntawm lub tshuab ziab khaub ncaws. Nws yog feem ntau tsim ntawm gypsum hmoov, ib qho muag muag muag roj sulfate uas tau sib xyaw nrog dej los ua cov tshuaj txhuam. Qhov no muab tshuaj txhuam rau cov nqaws, fab, thiab cov khoob ntawm cov tshuab ziab khaub ncaws wrougwall los tsim ib qho du, seamless nto.
HydroxyPropyyl methylcellose (HPMC) yog lub cellulose ether uas feem ntau ntxiv rau plaster cov ntaub ntawv rau ntau qhov laj thawj. HPMC yog muab tau los ntawm cellulose, lub ntuj polymer pom hauv tsob ntoo cell phab ntsa. Ntawm no yog qee qhov tseem ceeb ntawm kev siv HPMC nyob rau hauv plaster sib txuas:
Dej khaws cia: HPMC yog paub rau nws cov khoom siv dej zoo. Thaum ntxiv rau plaster cov compound compound, nws pab tiv thaiv kom tiv thaiv qhov sib xyaw los ntawm kev ziab tawm sai sai. Lub sijhawm ua haujlwm txuas ntxiv ua rau nws yooj yim rau kev thov thiab ua tiav cov khoom sib koom ua ke.
Txhim kho cov txheej txheem ua tiav: qhov sib ntxiv ntawm HPMC txhim kho cov txheej txheem ntawm cov sib txuas ua ke. Nws muab cov smoother sib xws, ua rau nws yooj yim rau kev thov thiab siv rau cov chaw ntub dej. Qhov no yog qhov tshwj xeeb tshaj yog qhov tseem ceeb rau kev ua tiav kev txawj ntse.
Adhesion: HPMC pab cov sib txuas ua ke ua raws li lub tsev so qhuav. Nws pab kom muaj kev sib xyaw ua ke rau cov nqaws thiab pob qij txha, kom ntseeg tau tias muaj zog thiab ntev ntev ib zaug cov khoom dries.
Txo cov shrinkage: gypsum cov ntaub ntawv cov ntaub ntawv zoo li yuav ntsws thaum lawv qhuav. Qhov kev sib txuas ntawm HPMC pab txo cov shrinkage thiab txo qhov ntxim nyiam ntawm cov kab nrib pleb tshwm sim ntawm qhov chaw tiav. Qhov no yog qhov tseem ceeb kom tau txais txiaj ntsig zoo thiab ntev ntev.
Huab cua Entraining Tus Neeg Sawv Cev: HPMC kuj ua raws li huab cua Entraining tus neeg sawv cev. Qhov no txhais tau tias nws pab ua ke me me microscopic air npuas rau hauv cov noob cov khoom, txhim kho nws cov kev ua tau zoo thiab ua tiav tag nrho.
Kev tswj raws li kev tswj: HPMC muab ntau dua kev tswj ntau dua li kev sib txuas ntawm cov sib txuas ua ke. Qhov no ua tiav cov kev xav tau cov ntawv nyeem xav tau thiab tuab thaum thov.
Nws yog ib qho tseem ceeb kom nco ntsoov tias cov qauv tshwj xeeb ntawm Gypsum cov ntaub ntawv yuav txawv ntawm HPMC yuav siv nyob ntawm cov khoom uas xav tau ntawm cov khoom kawg. Tsis tas li ntawd, lwm yam ntxiv xws li thickeners, binders thiab reararders tuaj yeem suav nrog kev ua tau zoo ntxiv.
HydroxyPropylenCellulose (HPMC) Cellulose Cellulose lub luag haujlwm tseem ceeb hauv kev txhim kho lub luag haujlwm tseem ceeb hauv kev txhim kho kev tsim kho thiab kho. Nws cov khoom muaj ntau yam kev pab ua tiav txoj kev du thiab ruaj ntawm cov chaw ntub dej.
Lub Sijhawm Post: Jan-29-2024