Cov nyhuv ntawm HPMC ntawm CUG QAUV

Hauv kev tsim kho kev tsim kho, tshuaj khib yog ib qho kev tsim kho lub tsev, siv nyob rau hauv masonry, plastering, tsev thiab lwm daim teb. Txhawm rau kom tau raws li kev tsim kho cov cai sib txawv thiab kev tsim kho cov cai tsim kho kom muaj kev tshuaj khib, cov tshuaj khib yuav tsum muaj kev tswj tau zoo. Kem tau hais txog tus kheej khiav ntawm kev tshuaj khib tsis muaj zog sab nraud, feem ntau qhia los ntawm fluidity lossis viscosity. Txhawm rau txhim kho kev tshuaj khib nyiab, txuas lub sijhawm tsim kho thiab txhim kho cov nyhuv kev tsim kho, cov kws tshawb nrhiav hloov kho cov tshuaj khib los ntawm admixtures sib txawv. HydroxyPropyyl methylcellueculose (HPMC), raws li ib qho dej-soluble polymer compound, tau siv dav hauv cov xim zoo thiab ua haujlwm ya raws thiab txhim kho kev ua haujlwm.

Cov Khoom Yooj Yim ntawm HPMC
HPMC yog ib qho kev sib xyaw organic polymer muab tau los ntawm cellulose nrog cov dej ua kua zoo, viscosity kev hloov kho thiab zaj duab xis-ua cov khoom. Nws cov qauv molecular muaj cov pab pawg hydrroxypropyl thiab methyl pawg. Cov kev qhia txog cov pab pawg no ua rau HPMC muaj cov solubility thiab ruaj khov, tshwj xeeb tshaj yog nyob rau hauv cov dej-raws li cov tshuab. Raws li ntxiv rau kev tshuaj khib, hpmc tsis tuaj yeem tsuas yog nce cov tshuaj tua hluav taws xob, tab sis kuj txhim kho cov tshuaj khib nyiab, li kev txhim kho kev tsim kho ntawm cug.

Cov nyhuv ntawm HPMC ntawm CUG QAUV
Txhim kho lub fluidity ntawm cug
Raws li cov dej-soluble polymer, HPMC tuaj yeem nce kev ruaj khov ntawm dej cug hauv kev txav mus los ntawm nws cov molecular chains. Tom qab HPMC yog yaj hauv dej, nws tsim lub siab-viscosity colloloal tov. Cov kev daws teeb meem no tuaj yeem ua rau muaj kev sib xyaw ua ke ntawm cov tshuaj khib, txo cov kev sib txhuam ntawm cov khoom, thiab yog li txhim kho lub fluidity ntawm cug. Tshwj xeeb, tom qab ntxiv HPMC, lub fluidity ntawm cug kev tshuaj khib yuav nce ntau, uas ua rau nws siv tau yooj yim, uas ua kom yooj yim dua rau cov haujlwm xws li plastering thiab nteg thaum lub sijhawm tsim.

Tswj qhov sib npaug ntawm fellity thiab viscosity
Qhov sib ntxiv ntawm HPMC tsis yog tsuas yog nce lub fluidity ntawm tshuaj khib, tab sis kuj ua tau zoo tswj cov viscosity ntawm cug. Lub viscos ntawm HPMC tuaj yeem hloov kho raws li nws cov kev ua haujlwm molecular, degree hloov chaw thiab lwm yam ntxwv. Yog li ntawd, nyob rau hauv kev cai sib txig sib txawv, qhov zoo tshaj plaws sib npaug ntawm fellity thiab viscosity tuaj yeem ua tiav los ntawm kev kho tus nqi HPMC siv. Yog hais tias cov fluidity dhau lawm, lub tshuaj khib nyiab yog qhov tsis txaus ntseeg thiab stratification teeb meem, thaum muaj lub piscosity ntau dhau yuav ua rau muaj teeb meem nyuaj. Yog li ntawd, tus nqi tsim nyog ntawm HPMC ntxiv yog qhov tseem ceeb los tswj kev tsim kho kev tsim kho ntawm lub tshuaj khib.

Txhim kho cov dej ceev ceev ntawm cug
Lwm txoj haujlwm tseem ceeb ua si los ntawm HPMC nyob rau hauv collple yog los txhim kho cov dej ceev ntawm cug. Nws tuaj yeem txo cov evaporation dej, txuas lub sijhawm ua haujlwm ntawm cug, thiab tsis txhob ua lub tshuaj khib ua rau nrawm dhau vim tias dhau evaporation ntawm dej. Kev txhim kho ntawm cov dej khaws cia tseem ua kom cug ua ke kom zoo dua nrog cov hauv paus kom zoo thaum lub sijhawm ua ntawv thov thiab Masonry cov txheej txheem los xyuas kom cov nyhuv tsim.

Txhim kho kev tsim kho kev tsim kho
Qhov kev sib txuas ntawm HPMC tuaj yeem ua rau lub tshuaj khib ntau ruaj khov thiab hnav khaub ncaws thaum lub sijhawm tsim kho. Tom qab lub tshuaj khib taub dej nce ntxiv, cov neeg ua haujlwm tsim kho tau yooj yim dua, du thiab kho lub cug, uas yog qhov tseem ceeb rau kev txhim kho cov khoom ua tau zoo. Tsis tas li ntawd, lub zoo ntawm cug yuav ua tau kuj yuav txo lub ces kaum kev sib cav thaum lub sijhawm kev tsim kho, thiab yog li txhim kho qhov zoo ntawm lub tsev zoo.

Cov nyhuv ntawm HPMC ntau npaum li cas ntawm coll fluidity

Tus nqi HPMC cuam tshuam ncaj qha cuam tshuam rau kev ua tau zoo ntawm cug, tshwj xeeb tshaj yog filmity thiab viscosity. Feem ntau hais lus, tus nqi HPMC ntxiv yuav tsum tau hloov kho raws li cov ntaub ntawv tshwj xeeb cortula thiab kev tsim kho. Nyob rau hauv collectional cap, tus nqi HPMC feem ntau yog 0.1% thiab 1%. Yog tias HPMC ntau heev, lub fluidity ntawm lub tshuaj khib yuav tsis txhim kho; Thaum yog tias tus nqi ntau dhau, lub tshuaj khib yuav ua rau tuab, cuam tshuam nws cov kev tsim kho. Yog li ntawd, hauv kev tsim ntawm kab cug cov kua mis, qhov zoo tshaj plaws ntawm HPMC yuav tsum tau hloov kho los ntawm kev sim.

Cov nyhuv ntawm HPMC rau lwm cov khoom ntawm cug
Ntxiv rau hauv Fluidity, HPMC kuj muaj qee qhov cuam tshuam rau lwm yam khoom ntawm cug. Piv txwv li, HPMC tuaj yeem txhim kho lub catch tawg tawm ntawm cug tshuaj cug, vim tias nws cov dej zoo nyob rau ntawm cov tshuaj khib thiab tiv thaiv cov kab nrib pleb tshwm sim los ntawm shrinkage. Tsis tas li ntawd, cov qauv colloidal tsim los ntawm HPMC hauv lub zog cug, tshwj xeeb tshaj yog hauv HPMC ua kom zoo dua cov nplaum ntawm cug thiab hauv paus nto.

Raws li kev sib sau ua ke zoo siab, HPMC tuaj yeem txhim kho kom muaj fiab, dej tuav thiab kho cov tshuaj khib, thiab ua kom ua kom ua haujlwm ntawm kev ua haujlwm cug. Hauv kev tsim kho, los ntawm kev tswj hwm kom zoo rau HPMC ntxiv, lub fluidity ntawm lub tshuaj khib yuav ua rau kom muaj kev txhim kho kom muaj kev txhim kho. Txawm li cas los xij, kev siv HPMC tseem yuav tsum tau hloov kho raws li lub tshuab tsim kho tshiab thiab tsim kev tsim kho kom tsis txhob muaj kev phiv los ntawm ntau dhau. Feem ntau, daim ntawv thov ntawm HPMC tau txhim kho kom zoo nkauj thiab kev tsim kho cov tshuaj khib, muab kev txhawb nqa zoo rau kev tswj hwm zoo thiab kev tsim kho hauv kev tsim kho kev tsim kho.