Thaum peb siv cov hmoov putty, feem ntau yuav muaj qee qhov teeb meem, yog li peb tsis paub qhov laj thawj. Kuv xav tias yuav tsum muaj xya hom teeb meem uas feem ntau tshwm sim hauv cov hmoov putty!
Ib: Ua sai sai. Qhov no feem ntau yog cuam tshuam nrog kev ntxiv cov tshauv calcium thiab qhov ceev ntawm cov fiber, thiab kuj cuam tshuam nrog qhov qhuav ntawm phab ntsa.
Ob: tev thiab dov. Qhov no muaj feem cuam tshuam nrog tus nqi khaws dej, uas yooj yim tshwm sim thaum qhov viscosity ntawm cellulose qis lossis qhov ntau ntxiv yog me me.
Peb: tshem tawm hmoov. Qhov no muaj feem cuam tshuam nrog qhov ntau ntawm cov tshauv calcium ntxiv, thiab nws kuj muaj feem cuam tshuam nrog qhov ntau thiab zoo ntawm cellulose ntxiv. Nws yog qhov cuam tshuam rau hauv qhov ceev ntawm cov khoom. Qhov ceev ntawm cov dej khaws cia yog qis thiab lub sijhawm hydration ntawm tshauv calcium tsis txaus.
Plaub: Ua pob. Qhov no muaj feem cuam tshuam nrog qhov qhuav av noo thiab qhov tiaj tiaj ntawm phab ntsa, thiab nws kuj muaj feem cuam tshuam nrog kev tsim kho.
Tsib: Ib qho pin point tshwm sim. Qhov no yog cuam tshuam nrog cellulose, uas muaj cov khoom tsis zoo ua zaj duab xis. Tib lub sijhawm, cov khoom tsis huv hauv cellulose react me ntsis nrog tshauv calcium. Yog tias qhov kev tshuaj tiv thaiv 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 carboxyl pawg ntxiv rau cellulose.
Rau: Cov qhov tsua roob hluav taws thiab cov qhov me me tshwm sim. Qhov no pom tseeb tias muaj feem cuam tshuam nrog qhov dej ntawm hydroxypropyl methylcellulose aqueous solution, tab sis qhov dej ntawm hydroxyethyl aqueous solution tsis pom tseeb. Nws yuav zoo dua los ua kev kho lub teeb.
Xya: Tom qab cov putty qhuav lawm, nws yooj yim tawg thiab tig daj. Qhov no yog cuam tshuam nrog kev ntxiv ntau ntawm cov calcium grey. Yog tias ntxiv ntau dhau ntawm cov calcium grey, qhov nyuaj ntawm cov hmoov putty yuav nce ntxiv tom qab ziab. Tsuas yog qhov nyuaj thiab tsis muaj kev ywj pheej yuav yooj yim tawg, tshwj xeeb tshaj yog thaum nws raug lub zog sab nraud. Nws kuj tseem cuam tshuam nrog cov ntsiab lus siab ntawm calcium oxide hauv cov calcium grey.
1. Vim li cas cov hmoov putty thiaj li nyias dua tom qab ntxiv dej?
Cellulose ether yog siv los ua cov khoom ua kom tuab thiab khaws dej hauv 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 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.
2. Vim li cas cov putty thiaj hnyav heev thaum lub sijhawm khawb?
Hauv qhov no, qhov viscosity ntawm 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.
3. Vim li cas cov putty thiab mortar ua los ntawm cellulose nrog tib viscosity zoo li txawv thaum lub caij ntuj no thiab lub caij ntuj sov?
Vim yog qhov kub ntawm cov khoom, qhov viscosity ntawm cov khoom yuav maj mam txo qis nrog rau qhov kub nce. Thaum qhov kub tshaj qhov kub ntawm cov khoom gel, cov khoom yuav raug dej nag 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 nce cov cellulose, thiab xaiv cov khoom uas muaj qhov kub ntawm cov gel siab dua.
Lub sijhawm tshaj tawm: Plaub Hlis-26-2024