Cov nplaum rau pobzeb feem ntau siv rau hauv kev lag luam kev tsim kho kom muaj kev sib txuas ruaj khov thiab kav ntev ntawm cov pobzeb thiab cov khoom siv hauv pem teb. Txawm li cas los xij, kev ua kom muaj kev sib txuas ruaj khov thiab kav ntev ntawm cov pobzeb thiab cov khoom siv hauv pem teb tuaj yeem nyuaj, tshwj xeeb tshaj yog tias qhov chaw ntawm cov khoom siv hauv pem teb tsis sib npaug, muaj kuab paug lossis muaj qhov dej ntws.
Nyob rau xyoo tas los no, kev siv hydroxypropyl methylcellulose (HPMC) hauv cov nplaum pobzeb tau nrov zuj zus vim nws cov khoom nplaum zoo heev. HPMC yog cov polymer ntau yam uas tau los ntawm cellulose feem ntau siv ua cov khoom ua kom tuab, ruaj khov thiab dai rau hauv kev lag luam tshuaj, tshuaj pleev ib ce thiab zaub mov. HPMC kuj tseem siv dav hauv kev lag luam kev tsim kho, tshwj xeeb tshaj yog hauv cov nplaum pobzeb, vim nws cov viscosity siab ua rau cov khoom sib txuas ntawm cov pobzeb zoo dua.
Txhim kho cov khoom siv sib txuas ntawm cov vuas ceramic siv cov HPMC viscosity siab
1. Txo qhov nqus dej
Ib qho ntawm cov teeb meem tseem ceeb hauv kev ua kom muaj kev sib txuas zoo ntawm cov vuas thiab cov khoom siv hauv pem teb yog cov khoom siv hauv pem teb nqus dej, ua rau cov nplaum tawg thiab ua tsis tau zoo. HPMC yog hydrophobic thiab pab txo qhov nqus dej los ntawm cov khoom siv hauv pem teb. Thaum ntxiv HPMC rau cov nplaum pobzeb, nws tsim ib txheej ntawm cov khoom siv hauv pem teb uas tiv thaiv dej nkag thiab txo qhov kev pheej hmoo ntawm kev tawg.
2. Txhim kho kev ua haujlwm tau zoo
Ntxiv HPMC uas muaj viscosity siab rau hauv cov nplaum pobzeb tuaj yeem txhim kho kev ua haujlwm ntawm cov nplaum. HPMC uas muaj viscosity siab ua haujlwm ua cov khoom ua kom tuab, ua rau cov nplaum du thiab sib xws. Qhov kev sib xws zoo dua no ua rau nws yooj yim dua los siv cov nplaum rau ntawm lub substrate, txo qhov kev pheej hmoo ntawm kev poob qis lossis dej ntws thiab tsim kom muaj kev sib txuas zoo ntawm cov pobzeb thiab lub substrate.
3. Txhim kho kev nplaum
HPMC uas muaj viscosity siab kuj tseem tuaj yeem txhim kho kev sib txuas ntawm cov vuas los ntawm kev txhim kho cov khoom sib txuas ntawm cov nplaum. HPMC uas muaj viscosity siab tsim cov tshuaj sib txuas muaj zog nrog cov nplaum pobzeb thiab cov khoom siv hauv pem teb, tsim kom muaj kev sib txuas muaj zog thiab txhim khu kev qha. Tsis tas li ntawd, cov khoom tuab ntawm HPMC muab cov nplaum nrog lub peev xwm thauj khoom ntau dua, yog li txhim kho kev ruaj khov ntawm kev sib txuas.
4. Txo qhov ntsws
Cov nplaum pobzeb tsis txaus tuaj yeem ua rau lub ntsej muag ntsws, ua rau muaj qhov sib txawv ntawm cov pobzeb thiab cov khoom siv hauv qab. Txawm li cas los xij, HPMC viscosity siab tuaj yeem pab txo qhov ntsws ntawm cov nplaum pobzeb los ntawm kev ua kom ruaj khov thiab sib xws thaum lub sijhawm siv. Kev ntsws tsawg dua ua rau lub zog sib txuas tag nrho nce ntxiv, ua kom cov nplaum ruaj khov ntev.
5. Txhim kho qhov tawg tsis kam
Cov vuas ceramic uas tsis sib txuas zoo rau lub substrate yuav yooj yim tawg thiab tawg. Cov viscosity siab HPMC muaj cov yam ntxwv zoo tiv thaiv kev tawg, pab tiv thaiv kev tawg thiab xyuas kom meej tias cov nplaum pobzeb siv tau ntev. HPMC faib kev ntxhov siab sib npaug, muab kev sib txuas zoo, thiab tiv taus kev tawg ntsug thiab kab rov tav.
xaus lus
HPMC uas muaj viscosity siab ua lub luag haujlwm tseem ceeb hauv kev txhim kho cov yam ntxwv ntawm kev sib txuas ntawm cov vuas, tshwj xeeb tshaj yog rau ntawm cov chaw nyuaj. Kev ntxiv HPMC rau cov nplaum pobzeb tuaj yeem txhim kho kev ua haujlwm, txo qhov nqus dej, txhim kho kev sib txuas ntawm cov khoom siv hauv paus thiab cov nplaum pobzeb, txo qhov ntsws, thiab txhim kho kev tiv thaiv kev tawg ntawm cov nplaum.
Nws tsim nyog hais tias HPMC yog tus phooj ywg ib puag ncig thiab tsis muaj tshuaj lom, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov phiaj xwm vuas vov hauv cov chaw uas muaj kev cuam tshuam rau ib puag ncig. Yog li ntawd, kev siv HPMC uas muaj viscosity siab hauv cov nplaum pobzeb tsis yog tsuas yog txhim kho qhov zoo ntawm cov nplaum xwb, tab sis kuj txhawb nqa kev ruaj khov thiab kev nyab xeeb ntawm ib puag ncig.
Kev lag luam kev tsim kho tuaj yeem tau txais txiaj ntsig zoo los ntawm kev siv cov HPMC uas muaj viscosity siab hauv cov nplaum pobzeb. Nws yog ib yam khoom muaj kev nyab xeeb, ua haujlwm tau zoo, yooj yim siv uas ua rau cov pobzeb thiab cov khoom siv sib txuas ua ke zoo dua, ua kom muaj kev ruaj khov ntev. Los ntawm kev siv cov khoom no, cov tib neeg tuaj yeem txaus siab rau kev ruaj khov dua, txo cov nqi kho, yooj yim siv, thiab kev phooj ywg ib puag ncig.
Lub sijhawm tshaj tawm: Lub Kaum Hli-07-2023