Hauv cov txheej txheem ntau lawm ntawm putty hmoov qhuav cho koob tshuaj no, lub piscosity xaiv ntawm hydroxypropylulose (HPMC) yog qhov tseem ceeb rau cov khoom lag luam. HPMC yog lub cellule tseem ceeb ether, feem ntau siv hauv cov yeeb yam hauv tsev, tshwj xeeb tshaj yog cov tshuaj xaub thiab ua kom zoo nkauj, dej tuav, dej ua haujlwm, thiab txhim kho kev tsim kho.
Cov haujlwm thiab cov teebmeem ntawm HPMC
Nyob rau hauv putty hmoov qhuav chot, hpmc feem ntau yog cov haujlwm hauv qab no:
Dej khaws cia: HPMC tuaj yeem nqus tau thiab khaws dej, kom tsis txhob txuas lub sijhawm ua haujlwm ntawm cov khoom siv ua haujlwm zoo.
Thickening: HPMC muab cov tshuaj vixosity thiab sib xws, yog li ntawd ua kom huv hmoov lossis cug qhuav tawg thaum sib tov, ua kom zoo nkauj thiab smoothness ntawm kev tsim kho.
Anti-plam: Lub viscos tuaj yeem txo cov khoom siv qeeb qeeb thaum tsim kho, tshwj xeeb tshaj yog thaum lub ntsa kev tsim kho.
Txhim kho kev tiv thaiv sagging: nce kev ruaj khov ntawm cov ntaub ntawv thaum lub sij hawm tsim kho kom tiv thaiv swb.
Xaiv HPMC viscosity
Lub viscos ntawm HPMC cuam tshuam ncaj qha cuam tshuam rau kev ua tau zoo thiab kev ua tiav ntawm putty cho koob tshuaj, yog li nws yog ib qho tseem ceeb los xaiv viscosity zoo. Nov yog qee qhov ntsiab cai thiab kev txiav txim siab rau xaiv viscosity:
1. Yuav tsum tsim nyog
Siab viscosity HPMC (100,000cps thiab saum toj):
Haum rau kev tsim kho nrog HIGHTION YUAV TSUM, xws li muaj hmoov stty rau ntawm phab ntsa siab.
Nws tuaj yeem txhim kho los tiv thaiv cov khoom uas npleem thiab txo cov dej ntws ntawm cov chaw ntsug.
Kev nce dej khaws cia, haum rau qhov kub thiab txias lossis qhuav huab cua tsis taus los tiv thaiv dej ntau dhau.
Muab cov nyhuv tuab tuab tuab uas muaj zog, uas yog qhov tseem ceeb rau kev tsim kho cov tuab ntawm cov txheej txheej tuab.
Nruab nrab viscosity HPMC (20,000cps mus rau 100,000cps):
Haum rau kev siv phab ntsa kev tsim kho thiab pem teb theem.
Nyuaj lub sijhawm ua haujlwm thiab kev siv fluidity, haum rau ntau yam ntawm huab cua huab cua.
Haum rau cov ntawv thov uas xav tau cov tshuaj tiv thaiv zoo tab sis tsis tas yuav muaj viscosity siab heev.
Tsis tshua muaj viscosity HPMC (10,000cps thiab hauv qab):
Siv rau cov hmoov putty uas yuav tsum muaj fluidity siab dua, xws li nyias nyias tsho.
Nws pab txhawm rau txhim kho kev vam meej thiab du ntawm cov khoom thiab haum rau kev kho zoo nkauj zoo.
Haum rau thaj chaw muaj cov chaw tsim chaw tsim.
2. Cov khoom siv muaj pes tsawg leeg thiab piv
Cov qauv nrog cov ntsiab lus sib xyaw cov ntsiab lus siab tshaj plaws feem ntau yuav tsum muaj siab viscosity HPMC los muab cov nyhuv txaus thiab ua kom cov khoom ruaj khov ntawm cov khoom.
Cov qauv uas muaj cov neeg sib xyaw ua ke zoo lossis xav tau cov xim loj tuaj yeem siv cov viscosity HPMC muaj peev xwm siv tau zoo thiab muaj qab hau ntawm cov khoom siv thaum lub sijhawm kev tsim kho.
Cov qauv nrog ntxiv cov polymers yuav xav tau cov viscosity hauv nruab nrab lossis qis qis HPMC kom tsis txhob cuam tshuam ntau dhau kev ua haujlwm.
3. Ib puag ncig cov xwm txheej
Kev kub siab thiab qhuav, xaiv siab visccosity HPMC kom txuas teeb meem qhib los ntawm kev tsim kho evaporation dej nrawm.
Tsis tshua muaj kub thiab vaum huab cua: xaiv qis lossis nruab nrab viscosity HPMC kom tsis txhob sib txawv ntawm cov khoom siv hauv av noo.
4. Kev tsim kho txheej txheem
Cov neeg kho tshuab txau feem ntau yuav tsum muaj cov tshuaj zoo ntawm cov khoom, yog li viscosity qis HPMC tau xaiv.
Rau kev tuav kev ntsuas, nruab nrab visccosity HPMC tuaj yeem raug xaiv kom ntseeg tau tias kev tsim kev tsim kho zoo.
Kev kuaj thiab tswj cov hpmc viscosity
Thaum xaiv HPMC, ntxiv rau ntawm viscity nqi, nws solubility, kev daws teeb meem, dej rov qab, thiab lwm yam. Lub sijhawm sib hloov feem ntau yog siv los ntsuas qhov viscosity ntawm kev ntsuas HPMC ntawm kev kub ntxhov thiab cov nqi shear kom ntseeg tau tias nws qhov kev ua tau zoo hauv cov ntawv thov tiag tiag.
Kuaj
Lub viscosity thiab kev ua tau zoo ntawm HPMC tuaj yeem kuaj hauv chav kuaj los ntawm cov kauj ruam hauv qab no:
Kev npaj dhau los npaj: yaj HPMC ntawm chav tsev kub thiab paub meej cov kev sib cais thiab tsis muaj cov lus.
Viscosity Ntsuas: Siv cov viscometer sib hloov ntsuas qhov viscosity ntawm ntau tus nqi tshee.
Dej Tuav Tseg Kev Kawm: Ntsuas Lub Peev Xwm Dej Tuav Haujlwm ntawm HPMC kom ntseeg tau tias nws tuaj yeem tswj cov dej noo txaus ntawm qhov kub.
Daim Ntawv Thov Thov: Simulate Tsim Kev Tsim Kho Kom Pom Cov nyhuv HPMC ntawm Kev Siv Ua Haujlwm ntawm Putty Cho iPad.
Kev Tswj Xyuas Zoo
Thaum lub sijhawm cov txheej txheem ntau lawm, txhua pob HPMC yuav tsum tau nruj me ntsis tswj hwm kom zoo, suav nrog kev soj ntsuam viscosity, thiab lwm yam khoom lag luam sib xws thiab ruaj khov.
Xaiv HPMC nrog cov viscosity tsim nyog yog qhov tseem ceeb rau kev tsim khoom ntawm putty xhp. High viscosity HPMC yog tsim nyog rau cov chaw tsim khoom uas xav tau siab rau cov kev siv visccity siab, thiab cov tshuaj tsis huv uas yuav tsum muaj flucitity. Cov tuam txhab tsim nyog yuav tsum ua kom zoo rau HPMC raws li cov kev thov ib puag ncig, thiab cov kev tsim kho, ua ke nrog kev kuaj cov khoom lag luam zoo thiab tsim kho.
Lub Sijhawm Post: Feb-17-2025