1. Cov teeb meem tshwm sim hauv cov hmoov putty
qhuav sai
Qhov no feem ntau yog cuam tshuam nrog qhov ntau ntawm cov hmoov calcium tshauv ntxiv (loj dhau, qhov ntau ntawm cov hmoov calcium tshauv siv hauv cov mis putty tuaj yeem txo qis kom raug) thiab qhov ceev ntawm hydroxypropyl methylcellulose (HPMC), thiab nws kuj cuam tshuam nrog qhov qhuav ntawm phab ntsa cuam tshuam.
Tev thiab dov
Qhov no muaj feem cuam tshuam nrog tus nqi khaws dej, uas yooj yim tshwm sim thaum qhov viscosity ntawm hydroxypropyl methylcellulose (HPMC) qis lossis qhov nyiaj 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 (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 qhov ntau ntawm hydroxypropyl methyl. Qhov ntau ntawm cov cellulose hauv paus (HPMC) muaj feem cuam tshuam nrog qhov zoo, uas tau cuam tshuam rau hauv qhov ceev ntawm cov khoom. Qhov ceev ntawm cov dej khaws cia qis, thiab lub sijhawm rau cov hmoov tshauv calcium (calcium oxide hauv cov hmoov tshauv calcium tsis hloov pauv tag nrho rau calcium hydroxide) tsis txaus. ,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 hydroxypropyl methylcellulose (HPMC) ua rau me ntsis nrog cov tshauv calcium. Yog tias qhov kev ua haujlwm hnyav, cov hmoov putty yuav nyob rau 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, cov khoom xws li hydroxypropyl methylcellulose (HPMC) sib xyaw nrog carboxymethyl pawg kuj tshwm sim hauv qhov xwm txheej no.
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 chaw ntawm hydroxypropyl methylcellulose (HPMC) cov kua dej. Qhov dej ntawm lub rooj sib zog ntawm hydroxyethyl cov kua dej tsis pom tseeb. Nws yuav zoo rau kev kho kom tiav.
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.
2. Vim li cas cov hmoov putty thiaj li nyias dua tom qab ntxiv dej?
Hydroxypropyl methylcellulose (HPMC) yog siv los ua cov khoom siv thickener thiab cov dej-retaining agent hauv cov roj greasy. Vim yog lub thixotropy ntawm hydroxypropyl methylcellulose (HPMC), hydroxypropyl methylcellulose hauv putty hmoov. Ntxiv ntawm HPMC kuj ua rau thixotropy tom qab ntxiv dej rau hauv putty. Qhov thixotropy no yog tshwm sim los ntawm kev puas tsuaj ntawm cov qauv sib xyaw ua ke ntawm cov khoom hauv putty hmoov. Cov qauv no tshwm sim thaum so thiab tawg hauv qab kev ntxhov siab. Uas yog hais tias, qhov viscosity txo qis hauv qab kev nplawm, thiab qhov viscosity rov qab los thaum sawv ntsug.
3. Vim li cas cov putty thiaj hnyav heev thaum lub sijhawm khawb?
Hauv qhov no, qhov viscosity ntawm hydroxypropyl methylcellulose (HPMC) feem ntau siv yog siab dhau, thiab qee cov chaw tsim khoom siv 200,000 yuan los ua putty. Cov putty tsim tawm hauv txoj kev no muaj viscosity siab, yog li nws yuav tog thaum batch scraping. ib qho kev xav ntawm. Qhov ntau npaum li cas pom zoo ntawm putty rau sab hauv phab ntsa yog 3-5 kg, thiab viscosity yog 80,000-100,000.
4. Vim li cas koj thiaj xav tias qhov viscosity ntawm hydroxypropyl methylcellulose (HPMC) nrog tib viscosity txawv 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 qhov ntau ntawm hydroxypropyl methylcellulose (HPMC), thiab xaiv cov khoom uas muaj qhov kub ntawm cov gel siab dua.
Lub sijhawm tshaj tawm: Plaub Hlis-12-2023