HPMC (HydroxyPropyyl methylcellulose) ua lub luag hauj lwm tseem ceeb hauv kev txiav cov ntaub ntawv.
1. Thickening tus neeg sawv cev
Raws li cov tuab dua, HPMC tuaj yeem ua kom muaj kev cuam tshuam zoo tshaj plaws ntawm cov ntaub ntawv viscosity thiab tiv thaiv kev cais tawm thiab los ntshav thaum tsim kho. Cov yeeb yaj kiab no ua kom ntseeg tau tias cov ntaub ntawv grouting nyob ntawd tusyees sib xyaw thaum kev tsim kho, yog li txhim kho kev tsim kho zoo thiab kev ua haujlwm ntawm cov khoom kawg.
2. Dej ceev ceev
HPMC muaj kev txhawb nqa dej zoo heev thiab muaj peev xwm txo qis txoj kev npau taws tsis dhau ntawm cov txheej txheem tawv ntawm cov ntaub ntawv nyuaj. Los ntawm kev tswj cov av noo uas tsim nyog, hpmc ua kom cov dej haus ntawm cov cement, txhim kho cov khoom siv thaum ntxov thiab lub zog kawg.
3. Txhim Kho Kev Ua Haujlwm
Qhov kev sib txuas ntawm HPMC tuaj yeem txhim kho kev ua haujlwm ntawm cov khoom siv nyiaj, ua rau kom kis tau yooj yim dua thiab sau thaum lub sijhawm kev tsim kho. Qhov kev ua haujlwm ua haujlwm no pab cov neeg ua haujlwm ua cov haujlwm tsim kev tsim kho kom yooj yim thiab txhim kho kev ua haujlwm zoo thiab zoo.
4. Tawg tsis kam
Vim tias HPMC muaj peev xwm los tswj cov dej noo kom zoo ntawm cov grout cov khoom, kev pheej hmoo ntawm kev tawg vim kom qhuav. Ib qho ntxiv, cov nyhuv tuab dua ntawm HPMC tseem pab txhawb kom txhim kho txoj hlua khi ntawm cov khoom siv, ntxiv txo qhov tau ntawm cov kab nrib pleb.
5. Ncua lub sijhawm ua haujlwm
HPMC tuaj yeem txuas ntxiv lub sijhawm ua haujlwm ntawm cov ntaub ntawv cog lus, muab cov neeg ua haujlwm pabcuam ntxiv los kho thiab txheej txheem thaum lub sijhawm ua haujlwm. Cov yam ntxwv no tshwj xeeb yog qhov tseem ceeb hauv cov chaw ua haujlwm nyuaj.
6. Txhim Kho Kom Khib-Thaw Kuj
HPMC cov dej-khaws cov khoom thiab txhim kho sab hauv cov qauv ntawm cov khoom ua rau cov khoom lag luam grout ntau ruaj khov thaum khov-thaw mus. Thaum cov ntaub ntawv cog qoob loo tau siv hauv cov txheej txheem txias, lawv tsis tshua muaj kev puas tsuaj vim yog khov-thaw mus txog, txuas ntxiv rau lub neej pabcuam.
7. Kev tiv thaiv ib puag ncig thiab kev nyab xeeb
HPMC yog cov tshuaj uas tsis muaj tshuaj lom thiab tsis muaj zog uas tsis tso cov tshuaj ua kom zoo rau kev tsim kho thiab ib puag ncig. Nws ib puag ncig tus phooj ywg zoo ua rau nws dav siv hauv cov phiaj xwm kev tsim kho niaj hnub no.
HPMC ua si tau lub luag haujlwm zoo heev hauv lub luag haujlwm zoo hauv cov khoom siv grouting. Nws tsis tsuas yog txhim kho kev ua haujlwm thiab qhov kawg ntawm cov khoom, tab sis kuj txuas lub neej pabcuam ntawm cov khoom rau ib qho. Cov yam ntxwv ntawm HPMC xws li dej cia, thickening, tawg tsis kam thiab txuas kev ua haujlwm ntev ua rau nws tsis tseem ceeb thiab tseem ceeb ntawm cov khoom lag luam tsis muaj. Hauv txoj haujlwm tsim kho niaj hnub no, kev siv hluav taws xob ntawm HPMC tsis tuaj yeem txhim kho kev tsim kho, tab sis kuj tseem ua kom muaj kev txhim kho kom muaj kev loj hlob.
Lub Sijhawm Post: Feb-17-2025