Hydroxypropyl methylcellulose (HPMC) yog cov khoom siv polymer dav siv hauv cov khoom siv hauv tsev. Raws li ib qho tseem ceeb ntxiv, HPMC plays lub luag haujlwm tseem ceeb hauv mortar zoo tib yam. Nws tuaj yeem tsis tsuas yog txhim kho kev ua tau zoo ntawm mortar, tab sis kuj muaj ntau yam zoo xws li kev tiv thaiv ib puag ncig thiab kev lag luam.
1. Txhim kho cov dej tuav ntawm mortar
HPMC muaj cov khoom tuav dej zoo heev thiab tuaj yeem txhim kho cov dej tuav tus nqi ntawm mortar. Qhov no yog qhov tseem ceeb heev rau kev tsim kho thiab kho cov mortar. Cov khib nyiab nrog cov dej tuav zoo yuav tsis poob dej sai sai thaum tsim kho, yog li tsis txhob muaj teeb meem xws li tawg thiab hmoov los ntawm kev poob dej sai. Tsis tas li ntawd, kev tuav dej zoo tuaj yeem txuas ntxiv lub sijhawm ua haujlwm ntawm cov mortar, ua rau kev tsim kho yooj yim dua.
2. Txhim kho qhov kev sib txuas ntawm mortar
HPMC tuaj yeem txhim kho lub zog sib txuas ntawm mortar. Qhov no yog vim hais tias cov tshuaj viscosity siab tsim tom qab HPMC yaj hauv dej tuaj yeem sau cov pores hauv cov tshuaj khib nyiab, yog li ua kom cov compactness thiab kev sib raug zoo ntawm cov mortar. Qhov nce hauv kev sib txuas ntawm lub zog tuaj yeem txhim kho qhov adhesion ntawm mortar thiab cov khoom siv hauv paus, txo qhov hollowing thiab shedding, thiab txhim kho kev tsim kho kom zoo.
3. Txhim kho kev ua haujlwm ntawm mortar
HPMC tuaj yeem txhim kho kev ua haujlwm ntawm mortar. Nws cov nyhuv lubrication ua rau cov mortar smoother thiab yooj yim rau kev thov, txo cov kev ua haujlwm thiab kev siv zog thaum siv. Nyob rau tib lub sijhawm, cov khoom thixotropic ntawm HPMC ua rau cov mortar nthuav tawm ntau dua viscosity thaum nyob ruaj ruaj, tiv thaiv cov mortar los ntawm sagging ntawm ntsug nto, yog li txhim kho kev tsim kho thiab zoo.
4. Txhim kho qhov tawg tsis kam ntawm mortar
HPMC txhim kho qhov tawg tsis kam ntawm mortar los ntawm kev txhim kho nws cov dej tuav thiab kev sib txuas lub zog. Kev tuav dej zoo tuaj yeem tiv thaiv cov mortar los ntawm cov kab nrib pleb vim kev poob dej sai; thaum lub zog ntawm kev sib raug zoo tuaj yeem ua rau kom muaj zog ntawm cov mortar thiab txo qhov tshwm sim ntawm shrinkage tawg. Tsis tas li ntawd, HPMC tau muab faib ua tusyees nyob rau hauv lub mortar los tsim ib lub network qauv, uas tuaj yeem txo cov kev ntxhov siab thiab txo qis kev tsim cov kab nrib pleb.
5. Txhim kho qhov kav ntev ntawm mortar
HPMC tuaj yeem txhim kho qhov ruaj khov ntawm cov tshuaj khib nyiab. Vim tias HPMC tuaj yeem txhim kho qhov kev sib cog lus thiab kev sib txuas ntawm cov tshuaj khib nyiab, qhov khov-thaw tsis kam, impermeability thiab tshuaj tiv thaiv corrosion ntawm mortar yog txhim kho. Tshwj xeeb tshaj yog thaum siv nyob rau hauv ib puag ncig hnyav, HPMC tuaj yeem txuas ntxiv lub neej kev pab cuam ntawm mortar thiab txo cov nqi kho thiab kho.
6. Txhawb kev tiv thaiv ib puag ncig ntsuab
HPMC yog cov khoom siv ib puag ncig, thiab nws daim ntawv thov nyob rau hauv mortar yog raws li lub tswv yim ntawm lub tsev ntsuab. Ua ntej tshaj plaws, HPMC tuaj yeem txhim kho kev ua haujlwm ntawm mortar thiab txo cov khoom pov tseg thiab kev siv peev txheej. Qhov thib ob, HPMC tsis muaj tshuaj lom thiab tsis muaj mob thiab yuav tsis ua rau muaj kuab paug rau ib puag ncig. Tsis tas li ntawd, HPMC tseem tuaj yeem txo qhov kev cuam tshuam ib puag ncig ntawm kev tsim vaj tsev los ntawm kev txhim kho kev ua haujlwm ntawm mortar thiab txo qis kev rov ua dua thiab kho dua los ntawm cov teeb meem zoo.
7. Kev txheeb xyuas nyiaj txiag
Txawm hais tias tus nqi ntawm HPMC ntxiv rau hauv mortar yog me me, kev txhim kho kev ua haujlwm thiab cov txiaj ntsig zoo uas nws nqa tau yog qhov tseem ceeb. HPMC tuaj yeem txo cov teeb meem zoo xws li kev tawg thiab tawg ntawm mortar, thiab txo cov nqi kho thiab kho. Tib lub sijhawm, HPMC txhim kho kev tsim kho, txhim kho kev tsim kho kom zoo, ua kom lub sijhawm tsim kho, thiab txuag nqi zog thiab sijhawm. Yog li ntawd, daim ntawv thov ntawm HPMC hauv mortar muaj txiaj ntsig kev lag luam siab.
HPMC muaj qhov zoo tshaj qhov zoo tib yam mortar. Nws tuaj yeem tsis tsuas yog txhim kho cov dej tuav, kev sib txuas lub zog thiab kev ua haujlwm ntawm mortar, tab sis kuj txhim kho qhov tawg tsis kam thiab ua haujlwm ntev ntawm mortar. Tsis tas li ntawd, HPMC ua raws li lub tswv yim ntawm kev tiv thaiv ib puag ncig ntsuab thiab muaj txiaj ntsig zoo rau kev lag luam. Yog li ntawd, HPMC, raws li ib qho tseem ceeb mortar additive, muaj dav daim ntawv thov prospects. Nyob rau yav tom ntej ntawm cov khoom siv hauv tsev, nrog kev nce qib ntawm kev siv thev naus laus zis, kev thov ntawm HPMC yuav ua kom dav thiab tob, ua kom muaj txiaj ntsig ntau dua rau kev txhim kho qhov zoo thiab kev ua haujlwm ntawm kev tsim kho.
Post lub sij hawm: Lub Xya hli ntuj-25-2024