HPMC (HydroxyPropyyl methylcellulose) yog lub cap tseem ceeb admixture siv nyob rau hauv cov ntaub ntawv hauv tsev. Nws lub luag haujlwm tseem ceeb suav nrog kev txhim kho cov dej rov qab los ntawm cug, txhim kho kev ua haujlwm thiab ua kom muaj kev tawg ua thiab ua kom zoo dua. Lub txiaj ntsig ntawm kev txhawj xeeb ntawm kev ntxhov siab ntawm nws cov kev ua tau zoo, uas cuam tshuam ncaj qha rau nws cov kev txhim kho hauv cov khoom ntawm cug.
1. Cov lus txhais ntawm HPMC fineness
HPMC fineness feem ntau yog qhia raws li qhov nruab nrab me me ntawm nws cov lus lossis qhov feem pua hla los ntawm ib sab. HPMC hais nrog lub siab siab me me yog me dua thiab muaj thaj chaw loj loj; HPMC hais nrog qhov qis qis yog qhov loj dua thiab muaj qhov chaw me me tshwj xeeb. Fineness muaj qhov cuam tshuam tseem ceeb ntawm kev sib cais, faib cov kev faib tawm thiab kev sib cuam tshuam ntawm HPMC nrog Maas hais.
2. Cov nyhuv rau dej tuav tseg
Dej khaws cia yog qhov taw qhia tseem ceeb ntawm tshuaj khib lav, uas cuam tshuam ncaj qha cuam tshuam rau kev tsim kho kev ua haujlwm thiab zoo tom qab ua kom tawv. Qhov siab dua ntawm HPMC, cov neeg mob siab tshaj tawm cov khoom siv hluav taws xob yog nyob rau hauv cov kav dej ceev, yog li txhim kho cov dej ua kom huv ntawm lub tshuaj khib. Ib qho ntxiv, nplua-grained hpmc dissolves sai dua thiab tuaj yeem khaws cov dej ua ntej, uas yog qhov tshwj xeeb tau zoo dua nyob rau hauv high-kub los yog cov dej siab-nqus dej tsim.
Txawm li cas los xij, kev lom zem ntau dhau yuav ua rau HPMC rau agglomerate thaum nws tau faib rau nws txawm tias kev faib tawm hauv cov nyhuv retention tiag tiag. Yog li, cov ntawv thov yuav tsum xav tau kev txiav txim siab txiav txim siab thaum xaiv HPMC zoo heev.
3. Kev cuam tshuam rau kev ua haujlwm
Kev ua haujlwm ua haujlwm yog hais txog kev tsim kho ntawm cug, uas yog feem ntau cuam tshuam nrog fluidity thiab thixotropy ntawm cug. HPMC hais nrog qhov sib xyaw siab dua tuaj yeem tsim cov khoom siv colloid hauv colle thiab lub zog ntawm lub tshuaj khib, yog li txhim kho cov haujlwm ua haujlwm. Tshwj xeeb tshaj yog hauv kev kho tshuab kev tsim kho, muaj siab HPMC tuaj yeem txo cov tshuaj tsuag tsuag thiab txhim kho kev ua tau zoo.
Ntawm qhov tsis sib xws, vim kev sib cais qeeb ntawm HPMC nrog qis dua viscosity, lub cug yuav muaj cov kab viscosity qis hauv kev sib xyaw, cuam tshuam rau kev ua haujlwm kev ua haujlwm. Tsis tas li ntawd, HPMC nrog cov khoom loj dua tuaj yeem hloov pauv ntawm cov tshuaj khib, cuam tshuam rau tag nrho cov haujlwm.
4. Cov nyhuv rau kev tawg
Nthuav tawm yog tsuas yog cuam tshuam los ntawm kev ziab shrinkage thiab sab hauv kev faib tawm sab hauv ntawm lub cug. HPMC nrog kev sib xyaw siab dua tuaj yeem faib cov dej sib tov thiab txo cov ziab khaub ncaws ntawm cov tshuaj khib nyiab ntawm lub cellule ntawm lub cellulorage ntawm lub colpulorage ntawm lub colle, yog li txhim kho zoo dua cov catching tsis kam.
Ntawm qhov tod tes, HPMC nrog qis dua cov chaw hauv cheeb tsam sab hauv lub cug cug sab hauv lub cap
5. Cov nyhuv rau lub zog
Lub fineness ntawm HPMC muaj cov nyhuv ntawm lub zog ntawm lub zog cug. HPMC nrog kev lom zem siab feem ntau pab ua kom cov dej khov ntau dua vim yog cov dej rov qab zoo dua qub vim tias ua kom zoo dua qub ntawm lub zog ntawm cug. Kev txhawj xeeb ®
Nws yuav tsum raug sau tseg tias ntau dhau HPMC cov ntsiab lus lossis kev cuam tshuam tsis zoo rau lub zog ntawm lub zog, thiab ntau dhau yuav ua rau muaj kev sib sau ua ke thiab cement.
6. Kev lag luam thiab kev tsim kho kev tsim kho
Hauv cov txheej txheem tiag tiag, High-finess HPMC feem ntau yog kim dua, tab sis nws haum rau lub sijhawm ua haujlwm ntawm kev ua kom dej siab thiab tawg tsis kam. Txog kev tsim kho kev tsim kho, nruab nrab HPMC fineness feem ntau tuaj yeem ua tiav qhov sib npaug ntawm kev ua tau zoo thiab kev lag luam.
HPMC Nrog cov sib txawv sib txawv muaj qhov cuam tshuam tseem ceeb ntawm cov yam ntxwv ntawm cug. High-finess hpmc feem ntau muaj kev ua haujlwm zoo dua qub, kev ua haujlwm tau zoo thiab yuav ua rau muaj kev pheej hmoo ntawm agglomeration thaum lub sijhawm ua tiav; Low-fineness HPMC yog qis dua nyob rau hauv tus nqi, tab sis muaj kev txwv hauv kev txhim kho kev ua tau zoo. Cov. Cov kev xaiv tsim nyog ntawm kev ntxhov siab muaj kev ntxhov siab raws li cov kev tsim kho tshwj xeeb yog qhov tseem ceeb rau cov kab cig kev ua haujlwm thiab cov nqi tswj.
Lub Sijhawm Post: Jan-08-2025