Hydroxypropylmethylcellulose (HPMC) yog ib qho tseem ceeb thiab ntau yam khoom xyaw siv hauv ntau yam lag luam suav nrog cov plaster ntau yam. HPMC yog ib qho cellulose ether uas tau los ntawm cellulose thiab yog ib qho nonionic, dej-soluble polymer. Nws feem ntau siv ua thickener, stabilizer thiab emulsifier hauv kev lag luam ntub thiab qhuav. Hauv kev lag luam gypsum, HPMC yog siv ua dispersant thiab thickener. Tsab xov xwm no piav qhia txog cov txiaj ntsig ntawm kev siv HPMC hauv kev tsim gypsum.
Gypsum yog ib yam khoom siv ntuj tsim uas feem ntau siv rau hauv kev lag luam kev tsim kho los tsim cov cement thiab gypsum. Yuav kom tsim tau cov khoom gypsum, gypsum yuav tsum tau ua kom tiav ua hmoov ua ntej. Cov txheej txheem ua hmoov gypsum suav nrog kev tsoo thiab sib tsoo cov khoom siv, tom qab ntawd ua kom sov rau qhov kub siab kom tshem tawm cov dej ntau dhau. Cov hmoov qhuav uas tau los tom qab ntawd yuav tsum tau sib xyaw nrog dej kom ua ib qho nplaum lossis slurry.
Ib qho ntawm cov yam ntxwv tseem ceeb tshaj plaws ntawm HPMC hauv kev lag luam gypsum yog nws lub peev xwm dispersing. Hauv cov khoom gypsum, HPMC ua haujlwm ua tus dispersant, rhuav cov pawg ntawm cov khoom me me thiab xyuas kom meej tias lawv sib npaug thoob plaws hauv cov slurry. Qhov no ua rau muaj cov nplaum du thiab sib xws dua uas yooj yim dua rau kev ua haujlwm nrog.
Ntxiv rau qhov ua ib qho dispersant, HPMC kuj yog ib qho thickener. Nws pab ua kom cov viscosity ntawm gypsum slurry nce ntxiv, ua rau nws yooj yim dua rau kev tswj hwm thiab siv. Qhov no tseem ceeb heev rau cov khoom uas xav tau cov tuab dua, xws li cov khoom sib koom ua ke lossis plaster.
Lwm qhov zoo ntawm HPMC hauv kev lag luam gypsum yog nws txoj kev ua haujlwm tau zoo dua. Ntxiv HPMC rau gypsum slurries ua rau cov khoom kis tau yooj yim dua thiab ua haujlwm ntev dua. Qhov no txhais tau tias cov neeg cog lus thiab cov tib neeg muaj sijhawm ntau dua los ua haujlwm rau cov khoom ua ntej nws teeb tsa.
HPMC kuj tseem ua kom zoo dua qub thiab ruaj khov ntawm cov khoom kawg. Los ntawm kev ua haujlwm ua tus neeg tawg, HPMC ua kom ntseeg tau tias cov khoom gypsum tau faib sib npaug thoob plaws cov khoom. Qhov no ua rau cov khoom ruaj khov dua, sib xws thiab tsis tshua muaj kev tawg thiab tawg.
HPMC yog ib yam khoom xyaw uas zoo rau ib puag ncig. Nws tsis muaj tshuaj lom, lwj tau thiab tsis ua rau muaj kuab paug rau huab cua. Qhov no ua rau nws yog ib qho kev xaiv zoo heev rau cov lag luam uas txhawj xeeb txog kev cuam tshuam rau ib puag ncig ntawm lawv cov khoom.
HPMC yog ib qho khoom xyaw tseem ceeb hauv tsev neeg gypsum nrog ntau yam txiaj ntsig. Nws lub peev xwm los tawg, ua kom tuab, txhim kho kev ua haujlwm thiab qhov zoo ntawm cov khoom kawg tau ua rau nws yog ib feem tseem ceeb ntawm kev lag luam. Nws txoj kev phooj ywg ib puag ncig kuj yog ib qho txiaj ntsig zoo hauv lub ntiaj teb uas ntau lub lag luam tab tom nrhiav kev txo lawv cov kev cuam tshuam rau ib puag ncig.
xaus lus
Hydroxypropylmethylcellulose (HPMC) yog ib qho khoom xyaw tseem ceeb hauv cov khoom siv plaster. Nws lub peev xwm los tawg, ua kom tuab, txhim kho kev ua haujlwm thiab qhov zoo ntawm cov khoom kawg tau ua rau nws yog ib feem tseem ceeb ntawm kev lag luam. Ntxiv mus, nws txoj kev phooj ywg ib puag ncig yog qhov zoo dua hauv lub ntiaj teb uas ntau lub lag luam xav txo lawv cov kev cuam tshuam rau ib puag ncig. Zuag qhia tag nrho, HPMC yog qhov kev xaiv zoo heev rau txhua qhov kev lag luam uas tab tom nrhiav kev txhim kho qhov zoo ntawm lawv cov khoom thaum tseem paub txog lawv cov kev cuam tshuam rau ib puag ncig.
Lub sijhawm tshaj tawm: Cuaj hlis-05-2023