Cov khoom siv xis mas raws siv dav siv hauv kev tsim kho, txoj kev, txuas hniav, tunnels thiab lwm yam dej num. Vim yog lawv cov ntaub ntawv ntau, tus nqi tsim nyog thiab kev tsim kho tsawg, lawv tau dhau los ua cov ntaub ntawv hauv tsev tseem ceeb. Txawm li cas los xij, cov khoom siv cov cement tseem ntsib qee qhov teeb meem hauv kev siv cov dej tsis zoo, cov dej tsis zoo thiab cov tshuaj tsis zoo rau cov tshuaj pleev ib ce ntawm kev tsim kho. Txhawm rau daws cov teeb meem no, cov kws tshawb nrhiav tau sim ua kom muaj ntau cov ntaub ntawv ua haujlwm polymer rau cov khoom noj kom txhim kho lawv cov kev ua tau zoo.HydroxyPropyyl methylcellulose (HPMC), raws li ib feem siv dej-soluble cov khoom siv, tau siv dav los txhim kho ntau yam khoom noj kom zoo, cov nyhuv ua kom tuab, dej tsis kam.
1. Cov teeb meem yooj yim ntawm hydroxypropyl methylcellose
Kimacell ®ydrepropal methylropen yog cov polymer kev hloov kho ntawm cov cellubity, nrog cov dej solubulity, thickening, dej tuav thiab siab stability. Nws tuaj yeem hloov kho lub piscosity, cov tshuaj tiv thaiv thiab kev tawm tsam cov ntaub ntawv casent, thiab tseem muaj qee cov pa hluav taws xob, tiv thaiv kev laus. HPMC feem ntau yog siv hauv cov ntaub ntawv hauv tsev xws li cug, cov tshuaj xis, cov tshuaj nplaum, thiab ua cov khoom siv tseem ceeb hauv kev kho cov khoom sib dhos ntawm cov khoom noj.
2. Kev txhim kho ntawm cov khoom sib dhos ntawm cov khoom siv xiss-basent los ntawm hydroxypropyl methylencelulose
Cov khoom siv rheological ntawm cov khoom siv xiss-basy yog qhov tseem ceeb rau kev tsim kho, tshwj xeeb yog cov txheej txheem kev nqus, thiab txheej saum npoo av, thiab txheej saum npoo av. Cov khoom zoo rheological tuaj yeem txhim kho kev siv tau zoo thiab xyuas kom zoo. Qhov kev sib txuas ntawm HPMC tuaj yeem txhim kho cov kua dej ntawm cov khoom noj kom zoo. Tshwj xeeb, HPMC nce viscosity ntawm cov cement muab tshuaj txhuam, ua rau cov sib xyaw kom ruaj khov thiab txo qhov tshwm sim ntawm kev cais. Nyob rau hauv dej tsawgasas piv cov kev mob, HPMC muaj peev xwm txhim kho kev ua haujlwm ntawm cov pob zeb thiab tshuaj khib nyiab, thaum tseem yuav txo lub sijhawm tsim kho.
3. Kev txhim kho ntawm kev tawg tsis kam ntawm Maas-raws cov khoom siv los ntawm HPMC
Cov khoom siv xissib yog nquag nquag thaum cov txheej txheem tawv me, feem ntau yog vim muaj qhov kom qhuav shrinkage, ntsuas kub hloov, thiab cov khoom siv sab nraud. Qhov kev sib txuas ntawm HPMC tuaj yeem txhim kho qhov tawg tsis kam ntawm cov khoom siv Maas-raws. Qhov no yog feem ntau vim yog cov dej ua kom zoo thiab ua haujlwm tuab ntawm HPMC. Thaum HPMC ntxiv rau cov ntaub ntawv tso cai, nws tuaj yeem txo cov dej ntshiab thiab ua kom txo qis cov dej khov los ntawm cov dej tsis sib haum. Tsis tas li ntawd, HPMC kuj tseem tuaj yeem txhim kho cov qauv sab hauv ntawm cov ntaub ntawv caas-raws li cov ntaub ntawv, nce ntxiv lawv cov kev nruj thiab tawg.
4. Txhim kho cov dej tsis taus thiab kav ntev ntawm cov ntaub ntawv casent-based
Cov dej tsis dhau thiab ruaj khov ntawm cov khoom siv khov mas yog ib qho ntawm cov ntsuas tseem ceeb ntawm lawv daim ntawv thov hauv kev tsim kho cov haujlwm. Raws li cov molecular molecular polymer, HPMC tuaj yeem txhim kho cov dej tsis kam ntawm cov khoom siv cov paj ntaub. HPMC lwg me muaj muaj zog hydrophilicity thiab tuaj yeem tsim cov dej num ruaj khov txheej hauv cov maas paste kom txo qis cov dej nkag. Nyob rau tib lub sijhawm, Kimacell®Spmc kuj tseem tuaj yeem txhim kho cov microstructure cov khoom siv, txo cov porosity, thiab yog li txhim kho cov khoom siv los tiv thaiv thiab dej tsis kam. Hauv qee qhov chaw tshwj xeeb, xws li cov chaw muaj huab cua sov lossis ntev nrog HPMC tuaj yeem txhim kho cov khoom siv khov kho cov khoom noj.
5. HPMC Thickening cov nyhuv rau CAs-based cov ntaub ntawv
Cov nyhuv tuab ntawm HPMC ntawm cov khoom siv Maa-raws yog ib qho ntawm cov ntsiab lus tseem ceeb rau nws qhov kev thov dav. Nyob rau hauv cov cement muab tshuaj txhuam, HPMC tuaj yeem tsim cov qauv sib tw sib txawv los ntawm kev hloov pauv ntawm nws cov qauv molecular, yog li tseem ceeb tshaj plaws viscosity ntawm cov tshuaj txhuam. Qhov no ua cov nyhuv tuab tsis tuaj yeem tsuas yog cov khoom siv ua kom xis nyob ruaj khov, tab sis kuj tseem txhim kho cov nyhuv ntawm cov tshuaj pleev ib ce thiab cov smoothness ntawm kev siv saum npoo rau ib qho. Kev tshuaj khib thiab lwm cov khoom siv caas-based, cov nyhuv tuab ntawm HPMC tuaj yeem txhim kho qhov kev ua haujlwm thiab kev yoog tau ntawm cov ntaub ntawv.
6. HPMC txhim kho cov kev ua tau zoo ntawm cov khoom siv Maas
Cov nyhuv muaj txhij txhua ntawmHPMCHauv cov ntawv tso cai ua ke, tshwj xeeb tshaj yog cov nyhuv snergistic, tawg tsis kam, dej tsis kam txhim kho kev ua tau zoo ntawm cov khoom siv Maas. Piv txwv li, HPMC tuaj yeem ua kom cov kua dej ntawm cov ntxhib cov ntaub ntawv thaum txhim kho lawv cov dej tsis kam tiv taus tom qab kev tsim kho. Rau ntau hom Maas-based cov ntaub ntawv, kev sib ntxiv ntawm HPMC tuaj yeem hloov kho lawv qhov kev ua tau zoo raws li xav tau kev ua haujlwm zoo thiab ua haujlwm ntev ntawm cov khoom siv xis mas.
HydroxyPropyyl Metylcellulose (HPMC), raws li cov khoom siv caas-soluble, tshwj xeeb tshaj yog nyob rau hauv cov pa roj av, tshwj xeeb tshaj yog cov dej tsis kam, dej tsis kam thiab ua kom zoo. Nws cov kev ua tau zoo ua rau HPMC dav siv hauv kev ua haujlwm cov ntaub ntawv hauv tsev, tshwj xeeb tshaj yog cov khoom siv caas. Nyob rau yav tom ntej, nrog kev txhim kho txuas ntxiv ntawm kev ua tau zoo ntawm Caas-based cov ntaub ntawv, daim ntawv thov tau ntawm Kimacell®, nws cov nyiaj tseem yuav tsum tau tshawb fawb ntxiv thiab tsim.
Lub Sijhawm Post: Jan-27-2025