Hydroxypropylmethylcellulose (HPMC) yog ib qho tshuaj siv dav hauv kev lag luam kev tsim kho. Nws lub luag haujlwm tseem ceeb yog txhim kho cov khoom siv ua haujlwm ntawm cov ntaub ntawv xws li mortar thiab concrete. Ib qho ntawm cov ntawv thov ntawm HPMC yog gypsum-based self-leveling, uas tau muaj kev cuam tshuam loj heev rau kev lag luam kev tsim kho.
Cov plaster uas nws tus kheej leveling yog cov khoom siv hauv pem teb zoo uas yooj yim rau kev teeb tsa thiab tuaj yeem siv rau ntawm cov pob zeb lossis cov plag tsev qub. Nws yog qhov kev xaiv nrov rau kev tsim kho lag luam thiab vaj tse vim nws muaj kev ua tau zoo thiab ruaj khov. Qhov teeb meem tseem ceeb hauv kev siv plaster uas nws tus kheej leveling yog kev tswj hwm qhov zoo thiab kev sib xws ntawm cov khoom siv thaum lub sijhawm npaj thiab teeb tsa. Qhov no yog qhov uas HPMC los ua si.
Hydroxypropyl methylcellulose yog ib yam khoom siv ua kom tuab uas ntxiv rau hauv cov khoom sib xyaw ua ke gypsum kom ntseeg tau tias muaj kev sib faib sib npaug. Nws kuj pab tswj qhov viscosity thiab tswj qhov zoo ntawm cov khoom siv. HPMC yog ib qho khoom xyaw tseem ceeb hauv cov khoom sib xyaw ua ke gypsum vim nws ua kom cov khoom sib xyaw ruaj khov, kom ntseeg tau tias kev sib cais tsis tshwm sim thiab txhim kho lub zog sib txuas ntawm cov khoom sib xyaw.
Cov txheej txheem thov ntawm gypsum tus kheej leveling suav nrog kev sib tov gypsum nrog HPMC thiab dej. Dej ua haujlwm ua tus nqa rau HPMC, kom ntseeg tau tias nws sib npaug hauv qhov sib tov. HPMC raug ntxiv rau qhov sib tov ntawm tus nqi ntawm 1-5% ntawm qhov hnyav qhuav ntawm gypsum, nyob ntawm qhov sib xws xav tau thiab kev siv kawg ntawm cov khoom siv.
Muaj ntau yam zoo ntawm kev ntxiv HPMC rau hauv cov plaster sib tov uas nws tus kheej leveling. Nws ua rau cov khoom siv ruaj khov dua los ntawm kev ua kom nws lub zog thiab tiv taus dej, tshuaj lom neeg thiab kev sib txhuam. Tsis tas li ntawd, HPMC ua rau cov khoom siv yooj ywm dua, ua rau nws hloov kho tau raws li qhov kub thiab txias thiab av noo. Qhov no tiv thaiv kev tawg, txo cov khib nyiab thiab txhim kho qhov zoo nkauj ntawm koj lub plag tsev.
Hydroxypropyl methylcellulose kuj tseem tuaj yeem ua haujlwm ua tus txhawb nqa kev nplaum los ntawm kev ua kom lub zog sib txuas ntawm cov gypsum uas nws tus kheej-leveling rau lub substrate. Thaum cov khoom sib xyaw raug siv, HPMC ua kom ntseeg tau tias cov khoom sib xyaw lo rau lub substrate, tsim kom muaj kev sib txuas ruaj khov thiab ruaj khov. Qhov no tshem tawm qhov xav tau cov khoom siv kho tshuab, txuag lub sijhawm thiab nyiaj txiag thaum lub sijhawm teeb tsa.
Lwm qhov txiaj ntsig ntawm HPMC hauv gypsum-based self-leveling yog nws qhov kev pab txhawb rau kev ruaj khov ib puag ncig hauv kev lag luam kev tsim kho. HPMC yog tus phooj ywg ib puag ncig thiab yooj yim pov tseg, ua rau nws yog lwm txoj hauv kev nyab xeeb thiab ruaj khov rau lwm cov tshuaj lom neeg.
Hydroxypropyl methylcellulose (HPMC) tau ua pov thawj tias yog ib qho khoom xyaw tseem ceeb hauv kev siv gypsum-based self-leveling applications. Los ntawm kev pab txhawb rau qhov sib xws, zoo thiab kev sib xws ntawm cov khoom sib xyaw, HPMC txhim kho qhov ruaj khov thiab kev zoo nkauj ntawm cov khoom siv. Nws cov txiaj ntsig ntawm kev txhim kho cov khoom siv sib txuas pab txuag lub sijhawm thiab nyiaj txiag hauv kev lag luam. Tsis tas li ntawd, kev siv HPMC txhawb kev ruaj khov ib puag ncig, ua rau nws yog qhov kev xaiv nyiam hauv kev lag luam kev tsim kho.
Lub sijhawm tshaj tawm: Cuaj hlis-14-2023