1. Lub ntsiab ntawv thov ntawm cellulose ether HPMC?
HPMC tau dav siv hauv cov xim siv hluav taws xob, cov dej khov kho, khoom siv hluavtaws, cov tshuaj, cov khoom noj, tshuaj pleev ib ce, luam yeeb. Nws tau muab faib ua qib kev tsim kho, zaub mov qib, cov khoom siv tshuaj, kev kawm qib zus thiab qib tshuaj txhua hnub.
2. Dab tsi yog cov kev faib tawm ntawm cellulose?
Cov cellulos uas yog MC, HPMC, MHEC, CMC, HEC, EC
Ntawm lawv, HEC thiab CMC feem ntau yog siv nyob rau hauv cov dej ua cov txheej txheem;
CMC kuj tseem siv tau rau hauv Creamics, teb roj, khoom noj thiab lwm thaj teb;
EC feem ntau siv hauv cov tshuaj, hluav taws xob nyiaj ua ntej thiab lwm thaj teb;
HPMC tau muab faib ua ntau yam kev sib xyaw thiab siv hauv cov khoom lag luam, khoom noj khoom haus, kev lag luam muag khoom haus tshiab txhua hnub thiab lwm yam khoom siv.
3. Dab tsi yog qhov sib txawv ntawm HPMC thiab MHEC hauv kev thov?
Cov yam ntxwv ntawm ob hom cellulose yog ib qho zoo ib yam, tab sis qhov kub thiab txias zoo dua, thiab cov dej kom zoo dua li HPMC nyob rau hauv cov kev mob siab Cov.
4. Yuav ua li cas tsuas yog txiav txim siab qhov zoo HPMC?
1) Txawm hais tias qhov dawb tsis tuaj yeem txiav txim siab seb HPMC yooj yim siv tau yooj yim, thiab feem ntau ntawm cov khoom zoo muaj kev txiav txim siab zoo, uas tuaj yeem raug txiav txim siab zoo ntawm cov tsos.
2) Kev pauv hloov pauv: Tom qab dissolving HPMC hauv dej los ua ib qho kev hloov pauv coloid, saib nws cov kev pauv teeb meem. Qhov zoo dua qhov pom kev loj, cov teeb meem tsawg dua muaj yog, thiab qhov zoo yog qhov zoo.
Yog tias koj xav kom raug tus kws txiav txim siab kom raug qhov zoo ntawm cellulose, feem ntau txhim khu kev qha yog siv cov cuab yeej kev tshaj lij hauv cov kev ntsuam xyuas kev tshaj lij. Cov ntsuas ntsuas tseem ceeb suav nrog viscosity, dej tuav tseg, thiab cov ntsiab lus tshauv.
5. Yuav ua li cas ntsuas ntsuas qhov viscosity ntawm cellulose?
Cov neeg nquag vis hauv lub cellulose kev ua lag luam yog NDJ, tab sis hauv kev ua lag luam thoob ntiaj teb, cov tshuab sib txawv feem ntau siv cov qauv viscosity sib txawv. Cov nquag muaj tus brookfeild RV, Hoppller, thiab tseem muaj cov kev sib txawv tau cov kev daws teeb meem sib txawv, uas tau muab faib ua 1% kev daws teeb meem thiab 2% daws. Cov kev sib txawv ntawm cov kev sib txawv thiab cov qauv kuaj sib txawv feem ntau ua rau muaj kev sib txawv ntawm ob peb zaug lossis txawm tias muaj sijhawm ntau zaus hauv cov txiaj ntsig viscosity.
6. Dab tsi yog qhov sib txawv ntawm HPMC tam sim ntawd hom thiab kub qhuav hom?
HPMC cov khoom lag luam tam sim ntawd xa mus rau cov khoom uas nthuav dav hauv dej txias, tab sis nws yuav tsum tau sau tseg tias dispersion tsis txhais tau tias muaj kev tshem tawm. Cov khoom tseem ceeb yog kho nrog glyoxal ntawm qhov chaw thiab tawg hauv dej txias, tab sis lawv tsis pib yaj tam sim ntawd. , yog li ntawd lub viscosity tsis yog tsim tam sim ntawd tom qab dispersion. Qhov ntau dua qhov ntau ntawm glyoxal nto kev kho, nrawm dua dispersion, tab sis qeeb qeeb ntawm viscosity, tus me dua ntawm glyoxal, thiab vice versa, thiab vice versa, thiab vice versa, thiab vice versa, thiab vice versa, thiab vice versa, thiab vice versa, thiab vice versa, thiab vice versa, thiab vice versa.
7. Compound cellulose thiab hloov cellulose
Tam sim no muaj ntau lub cellulose thiab cov compound cellulose ntawm kev ua lag luam, yog li dab tsi yog hloov kho thiab sib xyaw?
Qhov no zoo ntawm cellulose feem ntau muaj cov khoom uas tus thawj cellulose tsis muaj lossis txhim kho thaj chaw kom txhim kho, thiab lwm yam, nws yuav tsum tau sau tseg tias ntau lub tuam txhab Kuj siv cov cellule pheej yig uas nws cov khoom ua kom txo cov nqi yog hu ua cellulose cellulose lossis hloov cellulose. Raws li cov neeg siv khoom, sim ua kom paub qhov txawv thiab tsis txhob dag. Nws yog qhov zoo tshaj plaws los xaiv cov khoom lag luam txhim khu kev qha los ntawm cov khoom lag luam loj thiab cov chaw tsim khoom loj.
Lub Sijhawm Post: Jan-09-2023