HydroxyPropyyl methylcellose (HPMC) yog ib qho khoom siv tsis zoo siv siv hauv kev tsim kho, tshuaj, khoom noj khoom haus, khoom noj khoom haus, khoom noj. Txhawm rau txiav txim siab qhov zoo ntawm HPMC cov khoom lag luam, nws yog qhov tsim nyog los ua kev tshuaj xyuas ntau yam xws li nws lub cev thiab tshuaj lom neeg, cov yam ntxwv zoo thiab cov txiaj ntsig tshwj xeeb.
1. Cov yam ntxwv zoo
Xim thiab Xeev: Cov hmoov HPMC zoo feem ntau yog xim dawb lossis tawv nqaij dawb lossis cov xim dawb, muaj cov xim tsis zoo, muaj cov xim tsis zoo rau saum npoo. Cov xim tsaus heev lossis cov pob me me tuaj yeem qhia tias cov khoom siv raw tsis zoo lossis cov txheej txheem tsim khoom tsis zoo.
Cov ntxhiab: Cov Khoom Hwm HPMC muaj ntxhiab tsis muaj ntxhiab tsw. Yog tias muaj tsw ntxhiab, nws yuav qhia tau tias muaj cov impurities lossis tshuaj seem hauv cov txheej txheem ntau lawm.
2. Lub cev thiab tshuaj lom neeg ua tau
Viscosity: Viscosity yog ib qho tseem ceeb ntawm HPMC, uas cuam tshuam ncaj qha cuam tshuam nws cov kev ua tau zoo hauv kev thov. Nws yog feem ntau kuaj los ntawm cov viscometer partoreter lossis brookfield vis. Lub viscosity ntawm cov zoo HPMC yuav tsum ruaj khov, thiab qhov kev ua yuam kev ntawm cov nqi xeem thiab tus nqi nominal yog me (feem ntau tsis ntau tshaj li ± 10%).
Degree ntawm hloov chaw: Kev ua yeeb yam ntawm HPMC yog ze ze rau cov qib ntawm metoxy thiab hydroxypropny hloov chaw. Cov ntsiab lus methoxy feem ntau yog 19-30%, thiab hydroxypropyl cov ntsiab lus yog 4-12%. Tsawg heev lossis dhau dhau qhov kev hloov pauv siab yuav cuam tshuam rau solubility thiab viscosity stabability ntawm cov khoom.
Cov ntsiab lus noo noo: cov ntsiab lus noo noo yog feem ntau tsis muaj ntau tshaj 5%. Cov ntsiab lus heev noo yuav cuam tshuam rau kev tso khoom ruaj khov thiab daim ntawv thov nyhuv HPMC.
Cov tshauv cov ntsiab lus: Cov hmoov tshauv tsuas yog qhia cov ntsiab lus ntawm inorganic impurities nyob HPMC. Cov hmoov tshauv cov khoom lag luam zoo yuav tsum muaj tsawg dua 1%.
Solubility: HPMC yuav tsum muaj kev ua kom zoo solubility, yuav yooj yim rau tawg nyob rau hauv dej txias, thiab tsim lub pob tshab thiab kev sib dhos colloidal tov. Yog tias pom tseeb los yog flocculent nag los tshwm sim thaum lub sij hawm xaus, nws txhais tau tias cov khoom lag luam zoo tsis zoo.
3. Kev ua haujlwm zoo
Dej khaws cia: hauv kev siv daim ntawv thov, cov dej tuav tseg ntawm HPMC ncaj qha cuam tshuam rau kev ua haujlwm zoo. Cov dej tswj kav hauv xis mas mortab los yog gypsum yog txiav txim siab sim (feem ntau yuav tsum tau ua siab dua 90%) los txiav txim nws qhov zoo.
Thickening kev ua tau zoo: HPMC tuaj yeem ua kom cov kab mob viscosity ntawm kev daws teeb meem, thiab cov nyhuv tuab yuav tsum muaj cov khoom sib txawv thiab ruaj khov. Yog tias stratification lossis viscosity txo, nws yuav qhia cov khoom lag luam tsis muaj zog.
Zaj duab xis-ua cov khoom: HPMC muaj cov yeeb yaj kiab zoo-tsim thiab yuav tsum muaj qee yam hloov pauv thiab pob tshab tom qab zaj duab xis tsim. Tsis ncaj lossis yooj yim zaj duab xis qhia tias tsis zoo cov khoom lag luam zoo.
Thermal Stability: Zoo-Zoo HPMC yuav tsum ua kom muaj kev ua tau zoo thaum siab dua qhov kub thiab tsis muaj kev txiav txim siab lossis poob qis hauv viscosposity.
4. Kev soj ntsuam txoj kev thiab cov qauv
Kev kuaj xyuas: Siv cov kev tshawb nrhiav, spectrometers, cov tshuaj tua hluavtaws thiab lwm yam kom paub tseeb tias HPMC kom ntseeg tau tias cov khoom ua tau raws cov qauv.
Kev Kuaj Thov: Ntxiv HPMC rau ib qho kev thov tshwj xeeb (xws li Cug Cug lossis pleev xim rau nws cov dej tsis sib xws, ua kom muaj lwm yam khoom los ntawm kev siv simulating.
Cov Qauv Txheej Txheem Thoob Ntiaj Teb: Cov khoom lag luam HPMC zoo feem ntau ua tau raws li ISO, USP, EP, ESC, ETC, ETC, ETC, ETC, ETC, ETC, ETCE.
5. Cov khoom ruaj khov
Lub sij hawm ntev cia: Zoo-zoo HPMC yuav tsum muaj peev xwm tswj tau lub cev thiab tshuaj siv tshuaj tau ruaj thiab thov kev ua tau zoo thaum lub sijhawm khaws cia. Nrov cov kev sim ua kom nrawm yog siv los ntsuas nws qhov kev ua tau zoo hloov raws li qhov kub thiab huab cua siab ib puag ncig.
Cov ntsev tsis kam: ntsev tshuaj yuav muaj nyob hauv qee qhov chaw thov. Siab HPMC yuav tsum muaj peev xwm tswj tau zoo solubility thiab viscosity hauv cov ntsev daws.
6. Tus xa khoom cov txheej txheem ntau lawm thiab kev tswjhwm zoo
Cov khoom siv raw: kev tsim cov HPMC zoo yuav tsum tau muaj cov ntaub ntawv raw siab muaj qhov cuam tshuam tseem ceeb rau cov khoom kawg.
Cov Txheej Txheem Ntau Lawm: Cov txheej txheem ua haujlwm niaj hnub thiab nruj tswj tau zoo yog kev lees paub HPMC zoo. Cov khoom lag luam zoo yuav tsum muaj cov kab ntau lawm thiab ua tiav cov khoom siv sim.
Batch Stability: Los piv cov kev ua tau zoo ntawm cov khoom sib txawv ntawm cov khoom, nws tuaj yeem txiav txim seb tus neeg xa khoom yog ruaj khov.
7. Tus neeg siv tswv yim thiab kev ua lag luam lub koob npe
Kev Ntsuas Cov Neeg Siv: Qhov tseeb daim ntawv thov cov txiaj ntsig thiab cov tswv yim ntawm cov neeg siv yog cov lus tseem ceeb rau kev txiav txim siab ntawm HPMC cov khoom lag luam zoo.
Kev Tsim Kho Kev Lag Luam: HPMC cov khoom lag luam ntawm cov hom muaj npe zoo lossis siv dav hauv ntau yam kev lag luam feem ntau muaj feem xyuam zoo.
8. Kev ceev faj
Thaum kev yuav HPMC, cov kev xav tau tshwj xeeb yuav tsum tau qhia meej thiab cov khoom lag luam tsim nyog tau raug xaiv. Nyob rau tib lub sijhawm, kev siv tau ntawm cov khoom tuaj yeem lees paub ntxiv los ntawm kev ntsuas me me kom tsis txhob poob los ntawm kev ua tau kev ua tau zoo.
Lub sijhawm Post: Feb-15-2025