qhuav sai
Qhov no feem ntau yog vim muaj ntau dhau ntawm cov hmoov calcium tshauv (qhov ntau ntawm cov hmoov calcium tshauv siv rau hauv cov mis putty tuaj yeem txo qis kom haum) muaj feem cuam tshuam nrog tus nqi khaws dej ntawm hydroxypropyl methylcellulose, thiab kuj muaj feem cuam tshuam nrog qhov qhuav ntawm phab ntsa.
Tev thiab dov
Qhov no muaj feem cuam tshuam nrog cov ntsiab lus siab ntawm cov tshauv calcium lossis qhov ceev ntawm hydroxypropyl methylcellulose khaws dej tsawg, uas kuj tseem yuav tshwm sim thaum qhov viscosity ntawm cellulose qis lossis qhov ntxiv me me.
Kev tshem tawm cov hmoov av ntawm phab ntsa sab hauv
Qhov no muaj feem cuam tshuam nrog qhov ntau ntawm cov hmoov tshauv calcium ntxiv (qhov ntau ntawm cov hmoov tshauv calcium hauv cov mis putty me dhau lossis qhov huv ntawm cov hmoov tshauv calcium qis dhau, thiab qhov ntau ntawm cov hmoov tshauv calcium hauv cov mis hmoov putty yuav tsum tau nce ntxiv kom tsim nyog), thiab nws kuj muaj feem cuam tshuam nrog kev ntxiv ntawm cellulose Muaj kev sib raug zoo ntawm qhov ntau thiab zoo, uas tau cuam tshuam rau hauv qhov dej khaws cia ntawm cov khoom. Qhov dej khaws cia qis, thiab lub sijhawm teb ntawm cov hmoov tshauv calcium (cov calcium oxide hauv cov hmoov tshauv calcium tsis hloov pauv tag nrho rau calcium hydroxide) tsis txaus, uas yog ua rau.
npuas dej
Qhov no muaj feem cuam tshuam nrog qhov av noo qhuav thiab qhov tiaj tiaj ntawm phab ntsa, thiab nws kuj muaj feem cuam tshuam nrog kev tsim kho.
qhov taw qhia
Qhov no muaj feem cuam tshuam nrog cellulose, uas muaj cov khoom tsis zoo uas tsim cov zaj duab xis. Tib lub sijhawm, cov khoom tsis huv hauv cellulose ua rau me ntsis nrog cov tshauv calcium. Yog tias qhov kev ua xua hnyav, cov hmoov putty yuav tshwm sim hauv lub xeev ntawm cov taum pauv curd residue. Nws tsis tuaj yeem muab tso rau ntawm phab ntsa, thiab nws tsis muaj lub zog sib koom ua ke tib lub sijhawm. Tsis tas li ntawd, qhov xwm txheej no kuj tshwm sim nrog cov khoom xws li carboxymethyl sib xyaw nrog cellulose.
Cov roob hluav taws thiab cov qhov me me tshwm sim
Qhov no pom tseeb tias muaj feem cuam tshuam nrog qhov dej ntawm qhov dej ntawm cov kua hydroxypropyl methylcellulose. Qhov dej ntawm lub rooj sib zog ntawm cov kua hydroxyethyl tsis pom tseeb. Nws yuav zoo rau kev kho kom tiav. Nws kuj tseem muaj feem cuam tshuam nrog qhov ntxiv ntau dhau ntawm hydroxypropyl methylcellulose.
Tom qab cov putty dries, nws yooj yim tawg thiab tig daj
Qhov no yog hais txog kev ntxiv ntau cov hmoov tshauv-calcium. Yog tias ntxiv ntau dhau cov hmoov tshauv-calcium, qhov nyuaj ntawm cov hmoov putty yuav nce ntxiv tom qab ziab. Yog tias cov hmoov putty tsis muaj kev ywj pheej, nws yuav tawg yooj yim, tshwj xeeb tshaj yog thaum nws raug lub zog sab nraud. Nws kuj yog hais txog cov ntsiab lus siab ntawm calcium oxide hauv cov hmoov tshauv calcium.
Vim li cas cov hmoov putty thiaj li nyias dua tom qab ntxiv dej?
Cellulose siv ua tus neeg ua kom tuab thiab khaws dej rau ntawm cov putty. Vim yog thixotropy ntawm cellulose nws tus kheej, qhov ntxiv ntawm cellulose hauv cov hmoov putty kuj ua rau thixotropy tom qab ntxiv dej rau hauv cov putty. Qhov thixotropy no yog tshwm sim los ntawm kev puas tsuaj ntawm cov qauv sib xyaw ua ke ntawm cov khoom hauv cov hmoov putty. Cov qauv no tshwm sim thaum so thiab tawg thaum muaj kev ntxhov siab. Uas yog hais tias, qhov viscosity txo qis thaum do, thiab qhov viscosity rov qab los thaum sawv ntsug.
Vim li cas ho ua rau cov putty hnyav dua hauv cov txheej txheem scraping?
Hauv qhov no, qhov viscosity ntawm cov cellulose feem ntau siv yog siab dhau. Qee cov chaw tsim khoom siv 200,000 cellulose los ua putty. Cov putty tsim tawm hauv txoj kev no muaj viscosity siab, yog li nws zoo li hnyav thaum khawb. Qhov ntau npaum li cas pom zoo ntawm putty rau phab ntsa sab hauv yog 3-5 kg, thiab viscosity yog 80,000-100,000.
Vim li cas qhov viscosity ntawm cellulose zoo li txawv thaum siv tib lub viscosity cellulose thaum lub caij ntuj no thiab lub caij ntuj sov?
Vim yog qhov kub ntawm cov khoom, qhov viscosity ntawm putty thiab mortar yuav maj mam txo qis nrog rau qhov kub nce. Thaum qhov kub tshaj qhov kub ntawm cov khoom gel, cov khoom yuav raug precipitated los ntawm dej thiab poob nws cov viscosity. Qhov kub hauv chav tsev feem ntau yog siab dua 30 degrees, uas txawv ntawm qhov kub hauv lub caij ntuj no, yog li qhov viscosity qis dua. Nws raug pom zoo kom xaiv cov khoom uas muaj viscosity siab dua thaum siv cov khoom thaum lub caij ntuj sov, lossis kom nce cov cellulose, thiab xaiv cov khoom uas muaj qhov kub ntawm cov gel siab dua.
Lub sijhawm tshaj tawm: Tsib Hlis-19-2023