HydroxyPropyyl methylcellose (HPMC) yog qhov tseem ceeb ntxiv hauv cov khoom lag luam tsis zoo, txhim kho cov chaw xws li kev ua haujlwm, kom dej ua haujlwm, thiab cov nplaum. Ntsuas lub viscosity ntawm HPMC hauv cov khoom noj muaj sib xyaw qhuav yog qhov tseem ceeb rau kev ua kom zoo ib yam thiab ua tau zoo. Viscosity cuam tshuam qhov yooj yim ntawm daim ntawv thov, teeb sijhawm, thiab zaum kawg ntawm lub tshuaj khib.
Yam cuam tshuam rau viscosity ntsuas
1. Sib xyaw ntawm qhuav-cug
Qhov muaj pes tsawg leeg ntawm cov coluted qhuav suav nrog cov cement, aggregates, additives zoo li HPMC, thiab qee zaum lwm cov polymers. Qhov kev faib ua feem ntawm cov cheebtsam cuam tshuam rau viscosity. Ib qho kev xav ntau dua ntawm HPMC feem ntau nce viscosity vim nws cov khoom siv thickening. Tsis tas li ntawd, hom thiab kev teeb tsa ntawm cov mlom tuaj yeem cuam tshuam cov neeg ntws ntawm lub tshuaj khib.
2. Cov txheej txheem sib xyaw
Cov txheej txheem thiab lub sijhawm sib xyaw muaj kev cuam tshuam tseem ceeb ntawm kev ntsuas viscosity. Tsis txaus sib xyaw tuaj yeem ua rau muaj kev sib xyaw ua kom sib xyaw, ua rau muaj qhov tsis raug cov neeg viscirecosity nyeem. Kev sib xyaw ua ke kom ua kom muaj txiaj ntsig uas HPMC tau tawg tag nrho hauv cov tshuaj khib, muab cov txiaj ntsig zoo ib yam. Sib tov sib xyaw, lub sijhawm, thiab cov cuab yeej hom yuav tsum tau ua qauv rau kev txhim khu kev ntsuas.
3. Dej-rau-khoom sib piv
Cov dej-rau-khoom sib piv (w / s piv) yog qhov tseem ceeb hauv kev txiav txim siab ntawm lub vortcosity ntawm lub tshuaj khib. Cov dej siab dua feem ntau txo cov viscosity, ua cov tshuaj khib ntau cov kua dej. Hloov siab, cov ntsiab lus dej qis dua hauv cov tuab tuab, ntau viscous sib tov. Kev sib xws nyob rau hauv w / s piv yog qhov tseem ceeb rau reprecible ntsuas.
4. Kub
Qhov kub thiab txias cuam tshuam cov tshuaj volfosity ntawm HPMC daws tau ntau. Raws li kub nce ntxiv, lub viscosity ntawm HPMC txo qis vim qhov txo qis hauv kev sib txuam molecular. Yog li ntawd, nws yog qhov tseem ceeb rau kev ua yeeb yam viscosity ntsuas ntawm kev tswj hwm thiab muaj zog siv kom tsis txhob muaj kev hloov pauv tau.
5. PHEM
Phx qib ntawm cov tshuaj khib sib xyaw tuaj yeem cuam tshuam cov viscosity ntawm HPMC. HPMC cov chaw ua yeeb yam sib txawv ntawm cov hom viscosities sib txawv ntawm ntau theem qib, nrog cov txiaj ntsig heev p. Tswj kev nruab nrab mus rau me ntsis alkaline p yog qhov zoo tagnrho rau ruaj khov viscosity.
6. Lub hnub nyoog ntawm lub cug
Lub hnub nyoog lossis lub sijhawm dhau los tom qab sib xyaw ua ke tuaj yeem cuam tshuam cov viscosity ntawm lub tshuaj khib. HPMC cov txheej txheem hydration tuaj yeem txuas mus txuas ntxiv mus dhau lub sijhawm, maj mam hloov cov viscosity. Kev ntsuas yuav tsum tau ua raws li lub sijhawm sib nrug tom qab sib xyaw ua ke kom ntseeg tau.
7. Kev Ntsuas Cov Cuab Yeej
Qhov kev xaiv ntawm ntsuas rau kev ntsuas viscosity yog qhov tseem ceeb heev. Cov twj paj nruag muaj xws li kev siv cov visi tsev, cov visi lub zog musiccometers, thiab rheometers. Txhua qhov kev ntsuas muaj nws cov qauv ua haujlwm thiab kev haum raws li qhov viscosity ntau thiab cov ntaub ntawv tshwj xeeb ntawm lub cug raug kuaj. Kev ntsuas tshuaj thiab kev saib xyuas ntawm cov twj paj nruag no tsim nyog rau kev ntsuas yog qhov tseeb.
Ntsuas qhov viscosity ntawm qhuav-mixed-mixed-mixed-multifaceted txheej txheem los ntawm ntau yam, cov txheej txheem dej, rau qib, thiab lub hnub nyoog ntawm lub cug. Cov qauv kev cai thiab kev saib xyuas zoo ntawm cov txheej txheem no yog qhov tseem ceeb kom tau txais kev txhim khu kev qha thiab cov ntsuas viscosity. Los ntawm kev daws cov kev cov nyom thiab siv cov kev coj ua zoo tshaj plaws, kev ua tau zoo viscosity ntsuas tuaj yeem ua tiav, kom muaj kev ua tau zoo ntawm cov khoom siv hauv kev tsim kho.
Lub Sijhawm Post: Feb-18-2025