Hydroxypropyl methylcellulose (HPMC)yog ib qho tseem ceeb nonionic cellulose ether siv dav hauv ntau yam lag luam, suav nrog kev tsim kho, tshuaj, khoom noj, thiab tshuaj pleev ib ce. Muaj ntau tus neeg txhawj xeeb txog qhov kev siv HPMC. Txawm li cas los xij, qhov ntau npaum li cas tsis ruaj khov; nws txawv nyob ntawm kev lag luam, hom khoom, kev ua tau zoo, thiab cov qauv.
1. Tus nqi siv HPMC hauv kev lag luam tsim kho
Kev lag luam kev tsim kho yog ib qho ntawm cov ntawv thov tseem ceeb ntawm HPMC, tshwj xeeb tshaj yog hauv cov tshuaj sib xyaw qhuav, cov nplaum pobzeb, hmoov putty, cov tshuaj sib xyaw tus kheej, thiab cov tshuaj rwb thaiv tsev thermal. HPMC feem ntau ua haujlwm los khaws dej, ua kom tuab, thiab txhim kho kev ua haujlwm. Nws tus nqi siv feem ntau yog txij li 0.2% txog 0.8%, raws li hauv qab no:
Cov nplaum rau pobzeb: Cov tshuaj HPMC feem ntau yog nruab nrab ntawm 0.3% thiab 0.5%, kho raws li qhov nqus dej ntawm pobzeb, ib puag ncig kev tsim kho, thiab qib nplaum.
Cov tshuaj pleev rau phab ntsa: Cov tshuaj ib txwm siv yog 0.2% txog 0.4% kom ntseeg tau tias cov tshuaj pleev du thiab tsis tawg. Cov tshuaj pleev uas ua rau nws tus kheej sib npaug: Cov tshuaj feem ntau yog 0.1% txog 0.3%, thiab yuav tsum tswj qhov viscosity kom tswj tau qhov fluidity.
Cov tshuaj mortar rwb thaiv tsev: Cov koob tshuaj ntawm HPMC feem ntau yog 0.3% txog 0.6% los txhim kho kev khaws dej thiab kev nplaum, thiab tiv thaiv kev hollowing thiab tawg.
Cov yam tseem ceeb uas cuam tshuam rau qhov ntau npaum li cas suav nrog qib viscosity ntawm HPMC (qib feem ntau suav nrog 40,000 mPa · s, 75,000 mPa · s, thiab 100,000 mPa · s), cov qauv khoom, qhov kub ntawm daim ntawv thov, thiab cov khoom cement.
2. Kev Siv HPMC hauv Kev Lag Luam Tshuaj
Hauv kev lag luam tshuaj, HPMC siv tsawg tsawg ua cov khoom siv rau cov tshuaj pleev xim rau cov ntsiav tshuaj, cov tshuaj tso tawm tas mus li, thiab cov plhaub tshuaj ntsiav, tab sis xav tau kev huv siab thiab kev nyab xeeb heev.
Txheej ntsiav tshuaj: Feem ntau 2% txog 5% ntawm qhov hnyav ntawm ntsiav tshuaj yog siv los tswj tus nqi yaj thiab txhim kho qhov zoo nkauj.
Cov ntsiav tshuaj uas tso tawm tas mus li: Cov ntsiab lus HPMC yuav ncav cuag 10% txog 40%, ua haujlwm ua cov khoom siv matrix los ncua kev tso tshuaj. Cov tshuaj ntsiav khoob: HPMC yuav luag yog cov khoom xyaw tseem ceeb hauv cov tshuaj ntsiav, suav txog ntau dua 50%.
3. Kev Siv HPMC Hauv Kev Lag Luam Khoom Noj
HPMC siv ua cov khoom ua kom tuab, emulsifier, thiab stabilizer hauv cov khoom noj, thiab feem ntau siv rau hauv cov khoom ci, dej haus, thiab cov khoom noj mis nyuj uas muaj roj tsawg. Feem ntau cov nqi siv yog txij li 0.1% txog 0.5%. Piv txwv li:
Ice cream: Ntxiv kwv yees li 0.2% kom saj zoo dua thiab tiv thaiv kev tsim cov dej khov.
Cov khoom ci: Ntxiv kwv yees li 0.3% los txhim kho kev khaws cia noo noo thiab mos.
4. Kev Siv HPMC Hauv Kev Lag Luam Tshuaj Txhua Hnub
HPMC siv ua cov khoom ua kom tuab thiab noo noo hauv cov tshuaj zawv plaub hau, cov tshuaj da dej, thiab cov khoom siv tu tawv nqaij, feem ntau ntawm kev siv ntawm 0.3% txog 1.0%. Ntawm cov no:
Tshuaj zawv plaub hau: Ntxiv 0.3% txog 0.6% los txhim kho cov khoom rheological thiab kev xav.
Cov tshuaj pleev tawv nqaij: Ntxiv kwv yees li 0.5% txog 1.0% kom txhim kho kev nthuav dav thiab tsim cov zaj duab xis noo.
5. Cov Yam Tseem Ceeb Uas Cuam Tshuam Rau Tus Nqi Siv HPMC
Hom Khoom: Cov kab ke sib txawv muaj cov kev xav tau sib txawv, piv txwv li, mortar > zaub mov.
HPMC Viscosity: Cov HPMC uas muaj viscosity siab xav tau cov tshuaj tsawg tsawg, tab sis ua rau pom kev khaws dej zoo dua.
Kub thiab Ib puag ncig: Cov ntawv thov kub siab xav tau kev khaws dej ntau dua, uas ua rau kev siv HPMC ntau ntxiv.
Kev Sib Koom Tes Ua Qauv: Kev siv HPMC tuaj yeem txo qis yog tias RDP lossis hmoov txhuv nplej siab ether siv los ua tus pabcuam.
Tsis muaj tus qauv ruaj khov rau kev siv HPMC; nws yuav tsum tau ua raws li kev lag luam tshwj xeeb thiab cov qauv tsim. Feem ntau, tus nqi siv rau kev lag luam kev tsim kho yog 0.2% -0.6%, rau kev lag luam tshuaj nws tuaj yeem siab txog 40%, rau kev lag luam zaub mov nws yog kwv yees li 0.1% -0.5%, thiab rau cov khoom siv tshuaj txhua hnub nws yog 0.3% -1.0%.Xaiv hom HPMC zoothiab cov tshuaj tsis yog tsuas yog txhim kho kev ua tau zoo ntawm cov khoom xwb tab sis kuj tswj tau cov nqi zoo.
Lub sijhawm tshaj tawm: Lub Yim Hli-05-2025