Dab tsi yog qhov tseem ceeb siv ntawm hydroxypropyl methylulose?
- HPMC tau siv dav hauv cov khoom tsim kho, cov khoom siv hluavtaws, cov tshuaj, cov khoom noj, tshuaj ua liaj ua teb, luam yeeb thiab lwm yam tshuaj lom neeg. HPMC tuaj yeem sib faib ua qib kev tsim kho, khoom noj thiab cov qib tshuaj raws li lub hom phiaj. Tam sim no, feem ntau ntawm cov khoom lag luam yog cov qib kev tsim kho. Hauv cov hmoov tsim kho, ua kom muaj hmoov rau hauv cov nyiaj ntau, kwv yees li 90% yog siv rau cov hmoov ua kom muaj hmoov, thiab cov so yog siv rau cov txiv kab ntxwv xis thiab lo kua nplaum.
Yuav ua li cas paub qhov txawv ntawm HPMC tsuas yog thiab intuitively?
- Guiteness: (1) whiteness: tsis tuaj yeem txiav txim siab vim HPMC yooj yim siv, thiab yog cov neeg ua kom huv si ntxiv rau hauv cov txheej txheem ntau lawm, nws yuav cuam tshuam nws zoo. Txawm li cas los xij, feem ntau ntawm cov khoom lag luam zoo muaj zoo dawb. (2) Fineness: lub txiaj ntsig ntawm HPMC feem ntau muaj 80 mesh thiab 100 mesh, thiab 120 mesh tsawg dua. Feem ntau HPMC tsim hauv Hebei yog 80 mesh. Tus finer lub fineness, feem ntau hais lus, zoo dua. (3) Kev Hloov Teeb Hloov: Muab HydroxyPropropy (Holmc) mus rau hauv cov dej los ua ib qho kev hloov pauv ntawm colloid, thiab saib nws cov kev pauv teeb meem. Qhov ntau dua qhov kev hloov tsheb loj dua, qhov zoo dua, qhia tias muaj tsawg dua insolubles hauv nws. Cov. Lub permeability ntawm cov neeg ntsug feem ntau zoo, thiab nws tsis txhais tau tias yog qhov zoo dua li tias ntawm kab rov tav reactors, thiab khoom lag luam zoo yog txiav txim siab los ntawm ntau yam. (4) Qhov Loj Tshaj Plaws: Qhov loj dua qhov sib tsoo tshwj xeeb, qhov hnyav dua qhov zoo dua. Qhov tshwj xeeb yog qhov loj, feem ntau vim tias cov ntsiab lus ntawm hydroxypropyl group hauv nws yog siab, thiab cov ntsiab lus ntawm hydroxyproproutyl yog qhov siab, cov dej khaws cia zoo dua. (5) Kev hlawv: Nqa ib qho me me ntawm cov qauv thiab zes nws nrog hluav taws, thiab cov kab mob dawb yog cov ntoo tshauv yog ntoo tshauv yog cov ntoo tshauv yog ntoo tshauv yog cov ntoo tshauv Yam khoom dawb ntxiv, qhov tsis zoo ua tau zoo, thiab yuav luag tsis muaj qhov seem ntawm cov khoom ntshiab.
Dab tsi yog tus nqi ntawm hydroxypropyl methylulose?
--Anwer; Tus nqi ntawm hydroxyprropylmetyl nyob ntawm nws cov kev coj dawb huv thiab cov ntoo tshauv. Qhov siab dua cov kev coj dawb huv, tsawg dua cov hmoov tshauv cov ntsiab lus, tus nqi siab dua. Txwv tsis pub, qhov qis dua lub purity, cov ntau cov hmoov tshauv ntau, qis dua tus nqi. Nyoos rau 17,000 Yuan ib tuj. 17,000 Yuan yog cov khoom ntshiab nrog yuav luag tsis muaj impurities. Yog tias tus nqi hauv chav nyob siab dua 17,000 yuan, qhov nyiaj tau ntawm cov chaw tsim khoom tau nce ntxiv. Nws yog qhov yooj yim kom pom tias qhov zoo yog qhov zoo lossis tsis zoo raws li tus nqi ntawm cov hmoov tshauv hauv hydroxyprropyf methylculose.
Dab tsi viscosity ntawm hydroxypropylencellulose yog qhov haum rau cov hmoov putty thiab tshuaj khib?
--Anwer; Putty hmoov feem ntau yog 100,000 yuan, thiab qhov yuav tsum tau ua tshuaj khib tau ntau dua, thiab yuan yuav tsum tau siv tau yooj yim. Ntxiv mus, qhov tseem ceeb tshaj plaws ntawm hydroxypropyl methylcellulose yog dej ua kom rov qab, ua raws li thickening. Hauv cov hmoov putty, tsuav li lub taub dej ceev yog qhov zoo thiab lub viscosity yog tsawg (70,000-80,000), nws tseem ua tau. Ntawm chav kawm, lub viscosity hauv qab 100,000 yog siab dua, thiab cov txheeb ze cov dej rov qab yog qhov zoo dua. Thaum lub viscosity tshaj 100,000, lub viscosity muaj kev cuam tshuam rau dej ua kom muaj kev cuam tshuam tsis zoo.
Lub Sijhawm Post: Lub Tsib Hlis-20-2023