Hydroxypropyl Methylcellulose (HPMC) ether feem ntau yog siv los ua ib qho ntxiv hauv cov tshuaj tsuag tshuaj mortar vim nws muaj txiaj ntsig zoo heev. Mechanical spraying mortar, tseem hu ua machine-applied mortar or sprayable mortar, yog siv rau kev siv xws li plastering, rendering, thiab nto txheej hauv kev tsim kho. Nov yog yuav ua li cas HPMC tau siv rau hauv cov tshuab txau tshuaj txau:

1. Kev tuav dej: HPMC txhim kho cov dej tuav lub peev xwm ntawm cov khoom siv tshuaj txau. Nws tsim cov yeeb yaj kiab tiv thaiv nyob ib puag ncig cov khoom cement, ua kom cov dej ntws qeeb qeeb thiab ncua sij hawm ua haujlwm ntawm cov mortar. Qhov no ua kom muaj dej txaus ntawm cov cement thiab txhawb kev teeb tsa kom zoo thiab adhesion ntawm cov tshuaj txau rau hauv substrate.
2. Kev Txhim Kho Kev Ua Haujlwm: HPMC ua raws li kev hloov kho rheology, txhim kho kev ua haujlwm tau zoo thiab cov khoom ntws ntawm cov khoom siv tshuaj txau. Nws txhim kho qhov sib kis tau thiab siv tau ntawm cov tshuaj khib nyiab sib xyaw, tso cai rau kev sib tw thiab sib xws los ntawm cov khoom siv tshuaj tsuag. Qhov no ua rau muaj kev tiv thaiv ib puag ncig thiab thickness ntawm cov tshuaj tsuag txheej txheej.
3. Adhesion: HPMC txhim kho cov adhesion ntawm cov neeg kho tshuab txau mortar rau ntau yam substrates, suav nrog pob zeb, masonry, cib, thiab hlau. Nws txhawb kev sib raug zoo ntawm cov mortar thiab substrate, txo qhov kev pheej hmoo ntawm delamination lossis detachment tom qab thov. Qhov no ua kom ruaj khov thiab kav ntev ntawm qhov chaw coatings thiab tiav.
4. Anti-Sagging Properties: HPMC pab tiv thaiv sagging los yog slumping ntawm txhua yam tshuaj tsuag mortar rau ntsug los yog overhead nto. Nws tsub kom lub viscosity thiab yield kev nyuaj siab ntawm mortar sib tov, cia nws mus ua raws li ntsug nto yam tsis muaj ntau deformation los yog hloov chaw thaum lub sij hawm thov.
5. Crack Resistance: HPMC txhim khu kev yooj yim thiab cohesion ntawm cov neeg kho tshuab txau mortar, txo qhov kev pheej hmoo ntawm tawg los yog shrinkage tom qab thov. Nws haum me ntsis txav thiab nthuav dav hauv lub substrate yam tsis muaj kev cuam tshuam rau kev ncaj ncees ntawm cov tshuaj tsuag txheej txheej, kom ntseeg tau tias muaj kev sib tw thiab tawg-dawb tiav.
6. Compatibility nrog Additives: HPMC yog sib xws nrog ntau yam additives uas feem ntau siv nyob rau hauv txhua yam tshuaj tsuag mortar formulations, xws li cua-entraining agents, plasticizers, thiab accelerators. Nws tso cai rau kev hloov kho ntawm cov khoom khib nyiab kom tau raws li cov kev xav tau tshwj xeeb thiab cov kev xav tau ntawm daim ntawv thov.
7. Yooj yim ntawm kev sib xyaw thiab tuav: HPMC muaj nyob rau hauv daim ntawv hmoov thiab tuaj yeem tawg tau yooj yim thiab sib xyaw nrog lwm cov khoom xyaw qhuav ua ntej ntxiv dej. Nws compatibility nrog dej-raws li systems simplifies lub mixing txheej txheem thiab xyuas kom meej uniform faib ntawm additives thoob plaws hauv lub mortar sib tov. Qhov no ua kom yooj yim rau kev npaj thiab tuav cov cuab yeej siv tshuaj txau rau ntawm qhov chaw tsim kho.
8. Kev txiav txim siab ib puag ncig: HPMC yog ib puag ncig tus phooj ywg thiab tsis muaj tshuaj lom, ua rau nws tsim nyog rau kev siv hauv kev tsim kho yam tsis muaj kev phom sij rau tib neeg kev noj qab haus huv lossis ib puag ncig.

HPMC ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm, kev ua haujlwm, adhesion, thiab ua haujlwm ntev ntawm cov khoom siv tshuaj tua kab, kom ntseeg tau tias muaj txiaj ntsig zoo thiab muaj txiaj ntsig zoo thiab ua tiav hauv cov haujlwm tsim kho.