HydroxyPropyyl methylulose (HPMC) yog qhov tsis muaj ionic cellulose siv nyob rau hauv cov ntaub ntawv hauv tsev, khoom noj khoom haus thiab tshuaj lom txhua hnub. Hauv kev ua vaj tse, HPMC, raws li kev ntxiv, muaj ntau txoj haujlwm tshwj xeeb thiab muaj peev xwm txhim kho kev ua tau zoo ntawm cov pob zeb ua.
Lub luag haujlwm ntawm HPMC hauv kev ua vaj tse
1. Txhim kho cov haujlwm ntawm cov pob zeb ua
Ib qho ntawm cov haujlwm tseem ceeb ntawm HPMC yog txhawm rau txhim kho kev ua haujlwm ntawm cov pob zeb ua, uas yog, yooj yim ntawm kev ua haujlwm thiab fellity. HPMC muaj cov nyhuv zoo heev thiab tuaj yeem nce viscosity ntawm pob zeb ua pob zeb tawg, ua kom yooj yim dua thiab cov duab thaum kev tsim kho. Tsis tas li ntawd, HPMC tuaj yeem txhim kho cov dej khaws cia ntawm pob zeb surrry, tiv thaiv cov dej evaporate hauv qab kev kub siab lossis huab cua-qhuav mob, thiab tswj cov yas ntawm cov pob zeb.
2. Txhim khu cov dej khaws cia ntawm cov pob zeb
HPMC tuaj yeem txhim kho cov dej khaws cia ntawm cov pob zeb. Qhov no vim tias cov pab pawg hydroxy hauv HPMC muaj cov peev txheej ntawm HPMC muaj cov peev txheej dej nqus dej, uas tuaj yeem nqus thiab khaws dej thiab txo cov dej poob. Qhov txheej txheem tswj kav dej kom muaj txiaj ntsig yog qhov tseem ceeb rau cov txheej txheem tawv, kom tiv thaiv cov kab nrib pleb, tshwj xeeb tshaj yog nyob rau hauv cov pob zeb ua kom qhuav thiab ua kom muaj kev sib tsoo ntawm cov pob zeb.
3. Txhim kho qhov tawg tsis kam ntawm cov pob zeb ua
HPMC tuaj yeem txhim kho cov dej khaws cia thiab tiv thaiv kom txhob muaj dej los ntawm evaporating sai heev, yog li txo shrinkage tawg los ntawm dej poob. Ib qho ntxiv, cov nyhuv tuab yuav pab tau kev cais thiab los ntshav ntawm cov pob zeb tawg, ntxiv txo qhov tshwm sim ntawm cov kab nrib pleb. Tshwj xeeb tshaj yog nyob rau hauv loj-ntim ua vaj tse lossis huab cua kub ib puag ncig, cov tiv thaiv kev tawm tsam ntawm HPMC yog qhov tseem ceeb tshaj plaws.
4. Txhim kho cov nplaum ntawm cov pob zeb
HPMC tuaj yeem txhim kho txoj kev sib raug zoo ntawm cov pob zeb thiab sib txawv substrates. Qhov no yog vim tias cov tshuaj colloidal tsim los ntawm HPMC yaj hauv dej tuaj yeem ua ib zaj duab xis nyias nyob rau ntawm sab pob zeb ua kom txhim kho cov pob zeb sib cuam tshuam ntawm kev ua vaj tse thiab lwm yam khoom siv. Qhov no yog qhov tshwj xeeb tshaj yog rau cov ntawv thov xws li cov plas plack thiab cov nplaum nplaum, uas tuaj yeem txhim kho kev tsim kho zoo thiab kav ntev.
5. Kho lub sijhawm ua haujlwm ntawm cov pob zeb ua
HPMC muaj qee yam ua haujlwm ntawm kev tswj hluav taws xob kev tswj hwm lub sijhawm. Raws li cov kev xav tau, los kho tus nqi HPMC ntxiv, lub sijhawm teeb tsa ntawm cov pob zeb ua tau txuas ntxiv lossis ua kom tiav kev tsim kho thiab kev tswj hwm. Qhov no yog qhov tshwj xeeb tshaj yog thaum kev tsim kho yuav tsum siv sijhawm ntev lossis hauv qab cov xwm txheej kub. Nws tuaj yeem tiv thaiv cov pob zeb ua los ntawm kev ncaj nrawm dhau thiab ua kom tsim txiaj.
6. Txhim kho lub khov-thaw tawm tsam ntawm cov pob zeb ua
Cov dej khaws cia thiab cov nyhuv tuab ntawm HPMC tuaj yeem txhim kho cov qauv sab hauv ntawm cov pob zeb ua kom zoo thiab ua kom zoo dua qub-thaws ntawm cov pob zeb khov. Hauv thaj chaw txias lossis cov phiaj xwm uas yuav tsum tau tiv thaiv kom khov, ntxiv HPMC tuaj yeem tiv thaiv cov pob zeb khov kho los ntawm cov pob zeb khov-thaws mus thiab txuas ntxiv rau nws lub neej pabcuam.
Daim ntawv thov HPMC hauv kev ua vaj tse
HPMC tau siv dav hauv kev ua vaj tse, tshwj xeeb tshaj yog nyob rau hauv cov hauv qab no:
1. Qhuav xyaw cug
Nyob rau hauv qhuav-mixel cug, HPMC tuaj yeem txhim kho cov dej tuav thiab ua haujlwm ntawm cov tshuaj khib, thiab tiv thaiv kev ua haujlwm zoo thiab ua tau zoo. Tsis tas li ntawd, HPMC kuj tseem tuaj yeem txhim kho qhov tawg tsis kam thiab cov nplaum ntawm cug cov khoom sib xyaw thiab nce nws lub neej pabcuam.
2. Pobzeb Adhesive
Ntxiv HPMC mus rau Pobzeb Adhesive tuaj yeem txhim kho nws cov viscosity thiab sib txuas lus tias cov vuas tsis yooj yim rau xaub thiab poob thaum lub sijhawm pw. HPMC kuj tseem tuaj yeem txhim kho cov dej khaws cia thiab tawg tsis kam ntawm ceramic pobzeb nplaum, tiv thaiv cov vuas ceramic los ntawm cov dej poob lossis qhuav shrinkage.
3. Plastering cug
Hauv plastering cug, hpmc tuaj yeem txhim kho cov dej hauv qab thiab ua kom nws siv tau yooj yim thiab cov duab txo cov kev tsim kho thiab kev siv zog. Nyob rau tib lub sijhawm, HPMC tseem tuaj yeem txhim kho cov tawg kom tsis kam thiab kev sib sau ua kom huv cov tshuaj khib kom ua kom cov txheej txheej thiab khov kho txheej.
4. Kev ua tus kheej theem
Ntawm cov ntaub ntawv hauv pem teb hauv pem teb, HPMC tuaj yeem txhim kho nws cov kua dej thiab dej hauv av tuaj yeem ua rau tus txheej txheem ua haujlwm, thiab txo cov txheej txheem kev tsim kho thiab qhov chaw sib txawv. Tsis tas li ntawd, HPMC tseem tuaj yeem txhim kho cov tawg tsis kam thiab hnav tsis kam ntawm cov khoom hauv pem teb, txhim kho lawv cov kev pabcuam lub neej thiab kev ua kom zoo nkauj.
Daim ntawv thov ntawm hydroxypropylencellulose (HPMC) hauv cov pob zeb muaj ntau qhov zoo, ua kom muaj kev tiv thaiv, cov nplaum thiab khov-thau. Los ntawm kev siv HPMC, siv HPMC, cov kev ua haujlwm zoo thiab ua kom tau zoo dua los tau txhim kho kom tau raws li cov kev xav tau kev lag luam engineering. Nyob rau hauv lub neej yav tom ntej, nrog kev nce qib nruam ntawm thev naus laus zis thiab kev nce qib kev txhawb nqa yuav muaj txiaj ntsig ntau dua, coj cov txiaj ntsig ntau dua thiab cov txiaj ntsig.
Lub Sijhawm Post: Jul-23-2024