1. Cov teeb meem uas muaj nyob hauv Putty hmoov
Qhuav nrawm:
Lub ntsiab yog tias tus nqi ntawm cov hmoov tshauv calcium hmoov ntxiv (ntau dhau, tus nqi ntawm cov dej ua kom raug rau cov roj ntsha, thiab tseem muaj feem xyuam rau cov dryness ntawm phab ntsa.
Tev thiab dov:
Nws muaj feem xyuam rau dej khaws cia, thiab qhov viscosity ntawm cellulose yog nquag rau qhov xwm txheej no lossis qhov ntau ntawm kev ntxiv me me.
De-hmoov ntawm sab hauv phab ntsa putty hmoov:
Tus nqi ntawm cov hmoov av calcium hmoov ntxiv (tus nqi ntawm cov hmoov tshauv calcium muaj hmoov tsawg dhau, thiab cov nyiaj ntawm cov hmoov av, thiab cov hmoov tshauv tsawg dhau lawm, thiab cov hmoov tshauv ntshav qab zib yuav tsum tau nce siab) , thiab nws tseem tseem muaj feem xyuam rau tus nqi ntawm cellulose thiab qhov zoo yog cuam tshuam, uas tau cuam tshuam hauv dej khaws cia ntawm cov khoom. Tus kav dej tswj tsis tau yog tsawg, thiab cov tshuaj ntsuab calcium hmoov (cov tshuaj ntsuab calcium hmoov tsis tau hloov tshiab rau cov dej) yog tsis muaj sijhawm txaus, uas yog tshwm sim.
Foaming:
Lub qhov ntub noo ntawm phab ntsa yog cuam tshuam nrog lub tiaj tiaj, thiab nws tseem muaj feem xyuam rau kev tsim kho.
Lub pinpoint tshwm:
Nws muaj feem xyuam rau cellulose, nws zaj duab xis-ua cov cuab yeej tsis zoo, thiab tib lub sijhawm, lub impurities hauv cellulose me ntsis nrog cov tshauv calcium. Yog tias cov tshuaj tiv thaiv yog qhov hnyav, cov hmoov puty yuav tshwm sim hauv lub xeev ntawm taum curd residue. Nws tsis tuaj yeem muab tso rau ntawm phab ntsa, thiab nws tsis muaj cohesive quab yuam nyob rau tib lub sijhawm. Tsis tas li ntawd, qhov xwm txheej no tseem muaj tshwm sim nrog cov khoom lag luam xws li Carboxymethyl mixed nrog cellulose.
Tom qab cov putty dries, nws yog ib qho yooj yim kom tawg thiab tig daj:
Nws muaj feem xyuam rau kev sib ntxiv ntawm cov nyiaj ntau ntawm cov hmoov tshauv. Yog tias cov nyiaj ntawm cov hmoov tshauv tshauv yog ntxiv ntau dhau, lub hardness ntau dhau, lub hardness ntawm cov hmoov putty yuav nce tom qab ziab. Yog tias cov hmoov putty tsis muaj kev hloov pauv tau, nws yuav yooj yim rau tawg, tshwj xeeb tshaj yog thaum nws raug rau sab nraud. Nws tseem muaj feem xyuam rau cov ntsiab lus ntau ntawm calcium oxide hauv cov hmoov tshauv calcium hmoov.
2. Vim li cas cov hmoov zaub putty ua thinner tom qab ntxiv dej?
Cellulose yog siv los ua cov tuab thiab dej-khaws tus neeg sawv cev ntawm putty. Vim yog thixotrotropy ntawm cellulose ntawm cellulose hauv putty cov hmoov ntau kuj ua rau thixotropy tom qab ntxiv dej rau lub putty. Qhov no thixotropy yog tshwm sim los ntawm kev puas tsuaj ntawm cov qauv uas xoob ntawm cov hmoov ua kom muaj sia. Tus qauv no tshwm sim ntawm so thiab tawg poob qis hauv kev ntxhov siab. Uas yog hais, viscosity txo hauv qab nplawm, thiab viscosity rov qab thaum sawv twj ywm.
3. Dab tsi yog vim li cas vim li cas lub putty yog tus hnyav hauv cov txheej txheem scraping?
Hauv qhov no, lub viscosity ntawm cellulose feem ntau siv yog siab heev. Qee cov tuam ntxhab siv 200,000 cellulose los ua kom muaj. Lub putty tsim nyob rau hauv txoj kev no muaj siab viscosity, yog li nws pom hnyav thaum scraping. Qhov pom zoo ntawm PUTTY rau phab ntsa sab hauv yog 3-5 kg, thiab viscosity yog 80,000-100,000.
4. Vim li cas tib lub viscosity cellulose xav txawv nyob rau lub caij ntuj no thiab lub caij ntuj sov?
Vim yog lub thermal gelation ntawm cov khoom, lub viscosity ntawm lub putty thiab tshuaj khib yuav maj mam txo qis nrog qhov ntsuas kub. Thaum qhov kub tshaj qhov kub tshaj ntawm cov khoom, cov khoom yuav tau precipitated los ntawm dej thiab poob nws viscosity. Chav nyob kub nyob rau lub caij ntuj sov feem ntau yog tshaj 30 degrees, uas yog ntau txawv ntawm qhov kub nyob rau lub caij ntuj no, yog li cov viscosity yog qis dua. Nws tau pom zoo tias nyob rau lub caij ntuj sov, sim xaiv cov khoom lag luam nrog cov viscosity ntau dua thaum thov cov khoom, lossis nce tus nqi ntawm cellulose.
Lub Sijhawm Post: NOV-30-2022