Lub Viscosity Index of HydroxyPropyyl methylcellulose yog qhov ntsuas tseem ceeb heev. Lub viscosity tsis sawv cev txoj kev huv. Lub viscosity ntawm cellulose hpmc nyob ntawm cov txheej txheem ntau lawm. Hom kev siv sib txawv yuav tsum xaiv cellulose HPMC nrog cov viscosities sib txawv, tsis yog siab dua viscosge ntawm cellulose ntawm cellulose hpmc, zoo dua! Txoj cai yog txoj cai!
1. Viscosity tswj
High-viscosity HolroxyPropylenSylrose tsis tuaj yeem tsim cov cellulose heev tsuas yog los ntawm nqus thiab nitrogen hloov hauv kev tsim khoom. Feem ntau, zus tau tej yam ntawm high-viscosity cellulose hauv Suav teb tsis tau. Txawm li cas los xij, yog tias ib txoj kab kev oxygen tuaj yeem ntsia tau rau hauv lub hwj txwv, kev tsim tawm ntawm nws cov viscosity tuaj yeem tswj tau artificialially.
2. Siv tus neeg sawv cev
Ib qho ntxiv, xav txog kev hloov cov nitrogen ntawm nitrogen, nws yog ib qho yooj yim los tsim cov khoom lag luam high-viscosity tsis muaj teeb meem li cas airtight lub system yog. Ntawm chav kawm, qib ntawm polymerization ntawm refined paj rwb tseem yog qhov tseem ceeb. Yog tias qhov ntawd tsis ua haujlwm, ces ua nws nrog hydrophobic koom nrog. Muaj cov koom haum koom nrog hauv thaj chaw no hauv Suav teb. Dab tsi ntawm cov koom haum tus neeg sawv cev rau xaiv muaj qhov cuam tshuam zoo ntawm kev ua haujlwm ntawm cov khoom kawg.
3. Hydroxypropyl cov ntsiab lus
Cov tshuaj oxygen tseem ceeb nyob rau hauv tus reactor ua rau muaj kev cuam tshuam ntawm kev ua pa ntawm molecules tau txwv, nws tsis yog qhov nyuaj ua kom cov viscosity siab. Txawm li cas los xij, cov nqi salation muaj ntau yam yuav tau ua nrog cov ntsiab lus ntawm hydroxypropyl. Qee cov Hoobkas tsuas yog xav txo tus nqi thiab tus nqi, tab sis tsis kam nce cov ntsiab lus ntawm hydroxypropyl, yog li tsis muaj peev xwm mus txog qib zoo sib xws.
4. Lwm yam
Cov dej tuav cov khoom lag luam uas muaj kev sib raug zoo nrog cov txheej txheem ntawm methylropyl, tab sis rau tag nrho cov txheej txheem methylropyl ,, antio cov txheej txheem ntawm methylrops thiab propylene oxide, alkali concenterration thiab dej khaws cia. Tus piv rau cov paj rwb rov txiav txim qhov ua tau zoo ntawm cov khoom.
Lub Sijhawm Post: Apr-04-2023