Thaum ua thiab siv cov hmoov putty, peb yuav ntsib ntau yam teeb meem. Niaj hnub no, qhov peb tab tom tham txog yog tias thaum cov hmoov putty sib xyaw nrog dej, koj do ntau npaum li cas, cov putty yuav nyias dua, thiab qhov tshwm sim ntawm kev sib cais dej yuav loj heev.
Qhov ua rau muaj teeb meem no yog vim tias cov hydroxypropyl methylcellulose ntxiv rau hauv cov hmoov putty tsis haum. Cia peb saib cov hauv paus ntsiab lus ua haujlwm thiab peb yuav daws nws li cas.
Lub hauv paus ntsiab lus ntawm cov hmoov putty tau thinner thiab thinner:
1. Qhov viscosity ntawm hydroxypropyl methylcellulose tsis raug xaiv, qhov viscosity qis dhau, thiab qhov cuam tshuam tsis txaus. Lub sijhawm no, kev sib cais dej hnyav yuav tshwm sim, thiab qhov cuam tshuam tsis sib xws yuav tsis cuam tshuam;
2. Ntxiv cov tshuaj uas khaws dej rau hauv cov hmoov putty, uas muaj cov nyhuv khaws dej zoo. Thaum cov putty yaj nrog dej, nws yuav kaw ntau cov dej. Lub sijhawm no, ntau cov dej tau sib xyaw ua ke rau hauv cov dej sib xyaw. Thaum do, ntau cov dej raug sib cais, yog li qhov teeb meem feem ntau yog tias koj do ntau npaum li cas, nws yuav nyias dua. Muaj ntau tus neeg tau ntsib qhov teeb meem no, koj tuaj yeem txo cov cellulose ntxiv lossis txo cov dej ntxiv;
3. Nws muaj qee qhov kev sib raug zoo nrog cov qauv ntawm hydroxypropyl methylcellulose thiab muaj thixotropy. Yog li ntawd, tom qab ntxiv cellulose, tag nrho cov txheej muaj qee qhov thixotropy. Thaum cov putty raug do sai sai, nws cov qauv tag nrho yuav tawg thiab ua nyias dua thiab nyias dua, tab sis thaum nws tseem nyob twj ywm, nws yuav maj mam rov qab zoo.
Kev daws teeb meem: Thaum siv cov hmoov putty, feem ntau ntxiv dej thiab do kom txog qib uas tsim nyog, tab sis thaum ntxiv dej, koj yuav pom tias qhov ntxiv dej ntau npaum li cas, nws yuav nyias dua. Vim li cas ho ua li no?
1. Cellulose siv ua cov khoom ua kom tuab thiab khaws dej hauv cov hmoov putty, tab sis 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 hmoov putty;
2. 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 yog tsim tawm thaum so thiab rhuav tshem hauv qab kev ntxhov siab, uas yog hais tias, qhov viscosity txo qis thaum do, thiab qhov viscosity thaum so rov qab los, yog li yuav muaj qhov tshwm sim uas cov hmoov putty ua nyias dua thaum nws ntxiv nrog dej;
3. Ntxiv rau, thaum siv cov hmoov putty, nws qhuav sai dhau vim tias qhov ntxiv ntau dhau ntawm cov hmoov calcium tshauv muaj feem cuam tshuam rau qhov qhuav ntawm phab ntsa. Kev tev tawm thiab dov ntawm cov hmoov putty muaj feem cuam tshuam rau qhov ceev ntawm kev khaws dej;
4. Yog li ntawd, txhawm rau kom tsis txhob muaj tej xwm txheej tsis tsim nyog, peb yuav tsum tau them sai sai rau cov teeb meem no thaum siv nws.
Lub sijhawm tshaj tawm: Lub Rau Hli-02-2023