1. Stught Hmoov Dries sai
Teb: Qhov no yog feem ntau cuam tshuam nrog ntxiv ntawm cov tshuaj calcium thiab dej rov ua dua ntawm cov fiber, thiab tseem muaj feem xyuam rau cov dryness ntawm phab ntsa.
2. Lub hmoov putty hmoov peels thiab rolls
Teb: Qhov no cuam tshuam rau cov dej khaws cia, uas yooj yim tshwm sim thaum lub viscosity ntawm cellulose yog tsawg lossis tus nqi ntawm kev ntxiv me me.
3. Stety Hmoov Duav Hmoov Hmoov
Teb: Qhov no cuam tshuam nrog tus nqi ntawm cov av calcium ntxiv ntxiv, thiab nws tseem muaj feem xyuam rau tus nqi thiab kev yeem ntawm cellulose ntxiv. Nws tau xav txog hauv cov dej tswj cov khoom lag luam. Cov dej tuav cia qis dua yog tsawg thiab dej hiav txwv ntawm cov hmoov tshauv calcium tsis txaus.
4. Putty hmoov foaming
Teb: Qhov no muaj feem xyuam rau cov av noo thiab tiaj tus ntawm phab ntsa, thiab nws tseem muaj feem xyuam rau kev tsim kho.
5. Pinpots tshwm sim hauv cov hmoov putty
Teb: Qhov no muaj feem xyuam rau cellulose, uas muaj kev ua yeeb yaj kiab ua yeeb yam, thiab kuj impurities nyob rau hauv cellulose kev tshwm sim me ntsis nrog cov tshauv calcium. Yog tias cov tshuaj tiv thaiv yog qhov hnyav, cov hmoov puty yuav nyob rau 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 cov pab pawg carboxyl ntxiv rau lub cellulose.
6. Lub dav hlau qhov tsua thiab pinholes tshwm sim
Teb: Qhov no yog sib hais hais txog cov dej saum npoo Lub rooj dej nro ntawm hydroxyethyl aque kua tsis pom tseeb. Nws yuav zoo rau ua kev kho tiav.
7. Tom qab lub putty dries, nws yog ib qho yooj yim kom tawg thiab tig daj
Teb: Qhov no muaj feem xyuam rau kev sib ntxiv ntawm cov nyiaj calcium loj loj. Yog tias tus nqi ntawm grey calcium ntxiv ntau dhau, lub hardness ntxiv, lub hardness ntau dhau ntawm cov hmoov putty yuav nce ntxiv tom qab ziab. Tsuas yog lub hardness thiab tsis muaj kev hloov pauv yuav yooj yim tawg, tshwj xeeb tshaj yog thaum nws raug rau sab nraud. Nws tseem muaj feem xyuam rau cov ntsiab lus siab ntawm calcium oxide hauv grey calcium, uas tau qhia ua ntej.
8. Vim li cas cov hmoov zaub putty ua thinner tom qab ntxiv dej?
Teb: Cellulose yog siv los ua cov tuab thiab dej-khaws cov 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 sib xyaw ua ke ntawm cov khoom sib xyaw ua ke hauv cov hmoov noj. 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.
9. Vim li cas thiaj li ua kom hnyav rau hauv cov txheej txheem scraping?
Teb: 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. Cov hmoov uas pom zoo rau cov hmoov nplej sab hauv yog 3-5 kg, thiab viscosity yog 80,00000,000.
10. Vim li cas cov putty thiab coll ua ntawm cellulose nrog tib viscosity muaj kev sib txawv nyob rau lub caij ntuj no thiab lub caij ntuj sov?
Teb: Vim tias lub thermal gelation ntawm cov khoom, lub viscosity ntawm cov khoom yuav maj mam poob 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 raug nquahu kom xaiv cov khoom lag luam nrog cov tshuaj muaj zog dua thaum ua rau cov khoom lag luam qib siab, sim siv cov khoom lag luam qib siab dua, thiab kub ntawm cov khoom lag luam no yog qhov nruab nrab 70 degrees. Sim tsis txhob siv methyl cellulose nyob rau lub caij ntuj sov, nws qhov kub thiab txias li 55 degrees,
Lub Sijhawm Post: Feb-14-2023