1. Txhim kho qhov kev khaws cia dej ntawm cov mortar
Hydroxypropyl methylcellulose (HPMC) yog ib yam khoom siv uas khaws dej zoo heev uas nqus tau thiab khaws dej tau zoo los ntawm kev tsim cov qauv sib xws hauv cov mortar. Qhov kev khaws dej no tuaj yeem ua rau lub sijhawm evaporation ntawm cov dej hauv cov mortar ntev dua thiab txo qhov nrawm ntawm kev poob dej, yog li ntawd ncua qhov nrawm ntawm kev ua kom dej noo thiab txo qhov ntim ntawm cov kab nrib pleb uas tshwm sim los ntawm kev evaporation sai ntawm cov dej. Tib lub sijhawm, lub sijhawm qhib ntev dua thiab lub sijhawm tsim kho kuj pab txhim kho qhov zoo ntawm kev tsim kho thiab txo qhov ua tau ntawm kev tawg.
2. Txhim kho qhov ua haujlwm tau zoo thiab rheology ntawm mortar
HPMC tuaj yeem kho qhov viscosity ntawm cov mortar, ua rau nws yooj yim dua rau kev khiav lag luam. Qhov kev txhim kho no tsis yog tsuas yog txhim kho qhov fluidity thiab workability ntawm mortar, tab sis kuj txhim kho nws cov adhesion thiab kev npog ntawm lub substrate. Tsis tas li ntawd, AnxinCel®HPMC kuj tseem tuaj yeem txo qhov kev sib cais thiab dej ntws hauv mortar, ua rau cov khoom ntawm mortar faib sib npaug zos, zam kev ntxhov siab hauv zos, thiab txo qhov tshwm sim ntawm kev tawg.
3. Txhim kho qhov nplaum thiab tawg ntawm cov mortar
Cov zaj duab xis viscoelastic uas tsim los ntawm HPMC hauv cov mortar tuaj yeem sau cov qhov hauv cov mortar, txhim kho qhov ceev ntawm cov mortar, thiab txhim kho qhov lo rau ntawm cov mortar rau lub substrate. Kev tsim cov zaj duab xis no tsis yog tsuas yog ua kom lub zog ntawm cov mortar tag nrho muaj zog xwb, tab sis kuj muaj cov nyhuv thaiv kev nthuav dav ntawm cov kab nrib pleb me me, yog li txhim kho qhov tsis kam ntawm cov mortar. Tsis tas li ntawd, cov qauv polymer ntawm HPMC tuaj yeem faib kev ntxhov siab thaum lub sijhawm kho ntawm cov mortar, txo qhov kev ntxhov siab los ntawm cov khoom thauj sab nraud lossis kev hloov pauv ntawm cov substrate, thiab pab tiv thaiv kev loj hlob ntawm cov kab nrib pleb ntxiv.
4. Tswj qhov shrinkage thiab yas shrinkage ntawm mortar
Cov mortar feem ntau yuav tawg vim dej evaporation thaum lub sijhawm ziab, thiab cov khoom khaws dej ntawm HPMC tuaj yeem ncua kev poob dej thiab txo qhov ntim shrinkage los ntawm shrinkage. Tsis tas li ntawd, HPMC kuj tseem tuaj yeem txo qhov kev pheej hmoo ntawm cov yas shrinkage tawg, tshwj xeeb tshaj yog nyob rau theem pib teeb tsa ntawm cov mortar. Nws tswj qhov ceev ntawm kev tsiv teb tsaws chaw thiab kev faib tawm ntawm cov dej, txo cov capillary tension thiab kev ntxhov siab ntawm qhov chaw, thiab txo qhov tshwm sim ntawm kev tawg ntawm qhov chaw mortar.
5. Txhim kho qhov khov-thaw tsis kam ntawm cov mortar
Qhov ntxiv ntawm HPMC kuj tseem tuaj yeem ua kom lub zog khov-thaw ntawm cov mortar tsis kam. Nws cov dej khaws cia thiab lub peev xwm tsim zaj duab xis pab txo qhov ceev ntawm dej hauv mortar nyob rau hauv qhov kub qis, zam kev puas tsuaj rau cov qauv mortar vim qhov ntim ntawm cov dej khov siv lead ua. Tsis tas li ntawd, kev ua kom zoo dua ntawm cov qauv pore ntawm mortar los ntawm HPMC kuj tseem tuaj yeem txo qhov cuam tshuam ntawm cov voj voog khov-thaw rau qhov tawg tsis kam ntawm mortar.
6. Ua kom lub sijhawm ua kom cov dej noo ntev dua thiab ua kom cov qauv me me zoo dua
HPMC ua rau lub sijhawm ua kom cov tshuaj mortar ntev dua, ua rau cov khoom siv cement hydration puv cov qhov hws ntawm cov tshuaj mortar kom sib npaug thiab txhim kho qhov ceev ntawm cov tshuaj mortar. Qhov kev ua kom zoo ntawm cov qauv me me no tuaj yeem txo qhov tshwm sim ntawm cov qhov tsis zoo sab hauv, yog li txhim kho qhov kev tiv thaiv kab nrib pleb ntawm cov tshuaj mortar. Tsis tas li ntawd, cov saw polymer ntawm HPMC tuaj yeem tsim kev sib cuam tshuam nrog cov khoom siv hydration, txhim kho lub zog thiab kev tiv thaiv kab nrib pleb ntawm cov tshuaj mortar.
7. Txhim kho qhov tsis kam hloov pauv thiab cov yam ntxwv ntawm kev nqus hluav taws xob
AnxinCel®HPMC muab qee qhov kev ywj pheej thiab kev tiv thaiv kev hloov pauv rau cov pob zeb mortar, yog li nws tuaj yeem hloov kho tau zoo dua rau qhov chaw sab nraud thaum raug rau lub zog sab nraud lossis kev hloov pauv kub. Lub zog nqus no yog qhov tseem ceeb rau kev tiv thaiv kev tawg, uas tuaj yeem txo qhov kev tsim thiab nthuav dav ntawm cov kab nrib pleb thiab txhim kho lub zog ntev ntawm cov pob zeb mortar.
HPMC txhim kho qhov tawg tsis kam ntawm cov mortar los ntawm ntau yam los ntawm nws qhov tshwj xeeb dej tuav, adhesion thiab zaj duab xis tsim muaj peev xwm, suav nrog kev ua kom zoo dua ntawm mortar ua haujlwm tau zoo, txo qhov shrinkage thiab yas shrinkage tawg, txhim kho adhesion, ntev lub sijhawm qhib thiab tiv thaiv-freeze-thaw muaj peev xwm. Hauv cov ntaub ntawv tsim kho niaj hnub, HPMC tau dhau los ua ib qho tseem ceeb admixture los txhim kho qhov tawg tsis kam ntawm mortar, thiab nws cov kev cia siab ntawm daim ntawv thov yog dav heev.
Lub sijhawm tshaj tawm: Lub Ib Hlis-08-2025