Hydroxypropyl methylcellulose (HPMC)yog ib qho polymer uas siv tau ntau yam hauv kev lag luam xws li tshuaj, kev tsim kho, tshuaj pleev ib ce, khoom noj, thiab kev saib xyuas tus kheej. Qhov viscosity ntawm HPMC ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab nws qhov kev haum rau ntau yam kev siv. Qhov viscosity yog cuam tshuam los ntawm qhov hnyav molecular, qib ntawm kev hloov pauv, thiab kev sib xyaw. Kev nkag siab txog qib viscosity tsim nyog yog qhov tseem ceeb rau kev xaiv HPMC zoo rau cov kev xav tau tshwj xeeb hauv kev lag luam.
Kev Ntsuas Viscosity
Qhov viscosity ntawm AnxinCel®HPMC feem ntau yog ntsuas hauv cov kua dej siv lub rotational lossis capillary viscometer. Qhov kub ntawm kev sim tus qauv yog 20 ° C, thiab qhov viscosity yog qhia hauv millipascal-seconds (mPa·s lossis cP, centipoise). Ntau qib ntawm HPMC muaj cov viscosities sib txawv nyob ntawm lawv daim ntawv thov.
Cov Qib Viscosity thiab Lawv Cov Ntawv Thov
Cov lus hauv qab no qhia txog cov qib viscosity ntawm HPMC thiab lawv cov ntawv thov sib xws:
| Qib Viscosity (mPa·s) | Kev Ntsuas Ib Txwm Muaj (%) | Daim Ntawv Thov |
| 5 – 100 | 2 | Cov tshuaj zawv qhov muag, cov khoom noj khoom haus ntxiv, cov tshuaj ncua |
| 100 – 400 | 2 | Cov tshuaj pleev xim rau ntsiav tshuaj, cov khoom khi, cov nplaum |
| 400 – 1,500 | 2 | Cov tshuaj emulsifiers, cov roj nplua nyeem, cov txheej txheem xa tshuaj |
| 1,500 – 4,000 | 2 | Cov neeg ua kom tuab, cov khoom siv tu tus kheej |
| 4,000 – 15,000 | 2 | Kev tsim kho (cov nplaum rau pobzeb, cov khoom siv cement) |
| 15,000 – 75,000 | 2 | Cov tshuaj tsim tawm uas tswj tau, cov grouts siv rau kev tsim kho |
| 75,000 – 200,000 | 2 | Cov nplaum uas muaj viscosity siab, cov cement txhawb zog |
Cov Yam Cuam Tshuam Rau Viscosity
Muaj ntau yam uas cuam tshuam rau qhov viscosity ntawm HPMC:
Qhov Hnyav Molecular:Qhov hnyav molecular siab dua ua rau muaj viscosity ntau dua.
Qib ntawm Kev Hloov Chaw:Qhov piv ntawm hydroxypropyl thiab methyl pawg cuam tshuam rau solubility thiab viscosity.
Kev Ntsuas Tshuaj:Cov concentration siab dua ua rau muaj viscosity ntau dua.
Kub:Viscosity txo qis nrog rau qhov kub thiab txias nce ntxiv.
Kev rhiab heev ntawm pH:Cov tshuaj HPMC ruaj khov nyob rau hauv pH ntau ntawm 3-11 tab sis tuaj yeem lwj sab nraum qhov ntau no.
Tus Nqi Txiav:HPMC ua rau pom cov yam ntxwv ntws tsis yog Newtonian, uas txhais tau tias viscosity txo qis hauv qab kev ntxhov siab shear.
Cov Kev Xav Txog Tshwj Xeeb rau Daim Ntawv Thov
Cov Tshuaj:HPMC siv rau hauv cov tshuaj tsim rau kev tswj kev tso tawm thiab ua cov khoom sib txuas hauv cov ntsiav tshuaj. Cov qib viscosity qis dua (100–400 mPa · s) yog qhov zoo dua rau cov txheej txheem, thaum cov qib siab dua (15,000+ mPa · s) yog siv rau cov tshuaj tsim tawm tas mus li.
Kev Tsim Kho:AnxinCel®HPMC ua haujlwm ua tus neeg sawv cev khaws dej thiab nplaum rau cov khoom siv cement. Cov qib viscosity siab (siab tshaj 4,000 mPa·s) yog qhov zoo tagnrho rau kev txhim kho kev ua haujlwm thiab kev sib txuas lub zog.
Tshuaj pleev ib ce thiab Kev Saib Xyuas Tus Kheej:Hauv cov tshuaj zawv plaub hau, tshuaj pleev, thiab tshuaj pleev, HPMC ua haujlwm ua cov khoom ua kom tuab thiab ruaj khov. Cov qib viscosity nruab nrab (400–1,500 mPa·s) muab qhov sib npaug zoo tshaj plaws ntawm cov qauv thiab cov khoom ntws.
Kev Lag Luam Khoom Noj:Ua ib yam khoom noj khoom haus ntxiv (E464), HPMC ua rau cov qauv zoo nkauj, ruaj khov, thiab khaws cov dej noo. Cov qib viscosity qis dua (5–100 mPa·s) ua kom muaj kev sib kis zoo yam tsis muaj tuab dhau.
Kev xaiv ntawmHPMCQib viscosity nyob ntawm seb daim ntawv thov twg xav tau, nrog rau qib viscosity qis dua uas haum rau cov kev daws teeb meem uas xav tau qhov tuab tsawg kawg nkaus thiab qib viscosity siab dua siv rau hauv cov qauv uas xav tau cov khoom nplaum thiab ruaj khov. Kev tswj viscosity kom zoo ua kom muaj kev ua tau zoo hauv kev lag luam tshuaj, kev tsim kho, zaub mov, thiab tshuaj pleev ib ce. Kev nkag siab txog cov yam ntxwv uas cuam tshuam rau viscosity pab txhawb kev siv HPMC rau ntau yam kev siv hauv kev lag luam.
Lub sijhawm tshaj tawm: Lub Ob Hlis-11-2025