Thaum nws los txog rau pobzeb adhesives, daim ntawv cog lus ntawm cov nplaum thiab cov pobzeb yog qhov tseem ceeb. Yog tias tsis muaj kev ruaj khov, ua haujlwm ntev, cov vuas tuaj yeem xoob lossis txawm poob, ua rau raug mob thiab puas. Ib qho tseem ceeb ntawm kev ua tiav kev sib raug zoo ntawm cov pobzeb thiab cov nplaum yog kev siv hydroxypropyl methylcellulose (HPMC).
1. Txhim kho fluidity thiab buildability
HPMC txhim kho qhov ntws thiab ua haujlwm ntawm cov nplais nplaum. Los ntawm kev ntxiv HPMC rau cov nplaum, nws yooj yim dua rau kev sib kis thiab thov, muab cov nplaum ua kom zoo dua thiab zoo dua qub. Qhov kev ua haujlwm tau zoo dua no txhais tau tias yog adhesion zoo dua, vim tias cov nplaum tuaj yeem siv tau ntau qhov sib npaug, kom ntseeg tau tias txhua cov pobzeb yog sib txuas kom raug rau lub substrate. Yog li ntawd, cov vuas yuav tsis nqa lossis loosen txawm tias siv hnyav.
2. Kev tuav dej
Lwm qhov txiaj ntsig tseem ceeb ntawm HPMC yog tias nws txhim kho cov dej tuav ntawm cov nplais nplaum. HPMC khaws cov dej molecules, uas pab cov nplaum nplaum nyob ruaj khov thiab ua haujlwm tau ntev dua. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas muaj cov av noo siab lossis kub hloov pauv, vim tias cov nplaum tuaj yeem qhuav sai sai. Los ntawm kev khaws cov dej noo, HPMC ua kom cov nplaum nplaum nyob twj ywm ntev dua, muab sij hawm ntxiv rau daim ntawv cog lus rau pobzeb nto.
3. Ua kom adhesion
Qhov txiaj ntsig tseem ceeb tshaj plaws ntawm kev siv HPMC hauv cov nplais nplaum yog tias nws ua rau kom muaj kev sib raug zoo ntawm cov nplaum thiab cov nplais pobzeb. HPMC ua raws li cov nplaum ntawm ob qhov chaw, ua kom lawv sib raug zoo thiab ua haujlwm zoo. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog thaum txhim kho cov vuas nyob rau hauv qhov chaw raug dej los yog lwm yam dej noo, vim nws tuaj yeem tiv thaiv cov vuas los ntawm kev sib cais los yog xoob. Kev txhim kho adhesion muab los ntawm HPMC kom ntseeg tau tias cov vuas nyob ruaj ntseg hauv qhov chaw txawm tias siv hnyav.
4. Ua kom yooj yim dua
Pobzeb nplaum yuav tsum muaj peev xwm flex thiab txav nrog lub substrate yam tsis muaj cracking los yog sib cais los ntawm cov pobzeb. HPMC nce qhov yooj ntawm cov pobzeb nplaum, tso cai rau nws kom tiv taus kev txav thiab siab. Qhov kev hloov pauv no yog qhov tseem ceeb tshwj xeeb hauv cov cheeb tsam uas lub substrate yuav nthuav dav lossis cog lus vim qhov kub thiab txias hloov los yog hnyav hnyav. Los ntawm kev ua kom yooj yim ntawm cov nplaum, HPMC ua kom cov vuas nyob ruaj khov txawm tias nyob rau hauv cov xwm txheej nyuaj.
5. Txo shrinkage
Thaum kawg, siv HPMC hauv cov nplais nplaum tuaj yeem txo qhov shrinkage uas tuaj yeem tshwm sim raws li cov nplaum dries. Qhov shrinkage no tuaj yeem ua rau cov kab nrib pleb thiab qhov khoob ntawm cov pobzeb thiab cov substrate, ua rau tsis muaj zog ntawm kev sib raug zoo ntawm ob qhov chaw. Los ntawm kev txo qis qis, HPMC ua kom ntseeg tau tias cov nplais nplaum tseem nyob ruaj khov rau hauv substrate yam tsis muaj qhov tawg lossis qhov khoob. Qhov no ua kom cov vuas tau tuav ruaj ntseg hauv qhov chaw, tiv thaiv lawv los ntawm kev swb lossis xoob.
Muaj ntau yam txiaj ntsig los siv HPMC hauv cov nplaum nplaum. Los ntawm kev txhim kho kev ua haujlwm mus rau kev txhim kho adhesion, kev yooj yim dua thiab txo qis, HPMC yog ib qho tseem ceeb hauv kev ua tiav kev sib raug zoo ntawm cov pobzeb thiab cov nplaum. Los ntawm kev xaiv cov nplais nplaum nplaum uas muaj HPMC, koj tuaj yeem ua kom koj cov pobzeb txhim kho kom ruaj khov, kav ntev thiab nyab xeeb rau xyoo tom ntej.
Kev koom ua ke HPMC rau hauv cov nplais nplaum nplaum muaj ntau yam zoo. Xws li kev sib raug zoo muaj zog, ncua sij hawm qhib, txhim kho kev ua haujlwm thiab ua haujlwm zoo dua sag. Thiab, tsis txhob hnov qab tias nws tso cai rau kev khaws dej kom zoo thiab txhim khu kev ruaj ntseg. Nrog rau ntau yam txiaj ntsig nws muaj, HPMC yog ib qho khoom muaj txiaj ntsig zoo rau cov kws tshaj lij nrhiav kom ua tiav cov khoom zoo, pom kev zoo nkauj thiab siv tau ntev-ntev ceramic pobzeb.
Post lub sij hawm: Oct-24-2023