Muaj ntau tus neeg siv tsis tshua them sai sai rau cov teeb meem ntawm cov pa taws kub ntawm hydroxypropyl methylulose. Tam sim no, HydroxyPropyyl methylcellulose feem ntau yog qhov txawv raws li cov chaw viscosity, tab sis rau qee qhov chaw tshwj xeeb, tsuas yog cov khoom lag luam yog xav. Tsis txaus, hauv qab no qhia luv luv qhia txog qhov kub ntawm hydroxypropyl methylulose.
Cov ntsiab lus ntawm methyl acid yog hais txog qhov kev tsim tawm ntawm cov cellulose ntawm cellulose, thiab cov ntsiab lus ntawm kev tswj hwm cov qauv, cov tshuaj tiv thaiv kub. Nyob rau tib lub sijhawm, qib ntawm ether cov tshuaj cuam tshuam rau cov ntsiab lus ntawm hydroxyethyl lossis hydroxyapatite. Yog li ntawd, cellulose hais tau ua neeg tau hais txog feem ntau rau qhov kub ntawm cov gel yuav tsis tshua ntub. Cov txheej txheem kev tsim qauv no tau ua kom pom tseeb, yog li hloov qis me me ntawm methodides, cov cellulose muaj neeg muaj kev hais ua ke yuav siab me ntsis nyob rau hauv nqe.
Gel kub tau txiav txim siab nrog methoxide thiab hydroxypam nrog hydroxyProxin. Tsuas yog peb pawg tuaj yeem hloov pauv ntawm cellulose. Nrhiav qhov ntsuas kub yog qhov kub thiab ntsuas kom muaj cov av noo, thiab txiav txim siab lub pulp qauv. Qhov kub ntawm lub gel yog qhov tseem ceeb rau kev siv cov cellulose ether. Thaum pawg neeg kub tshaj qhov kub tshaj qhov kub thiab txias, ether ether yuav tso tawm ntawm dej. Qhov ntsuas kub ntawm lub sam thiaj ntawm kev ua lag luam yog feem ntau yog kom tau raws li cov kev xav tau ntawm kev daws teeb meem hauv ib puag ncig (tshwj tsis yog cov mob tshwj xeeb). Nws ntseeg tau tias thaum ua ntawv thov kev daws, nws tsis tas yuav them nyiaj tshwj xeeb rau cov ntsuas kev ua haujlwm thaum siv cov gel. Tau kawg, cov chaw tsim khoom ntawm cellulose ether yuav tsum coj mus rau hauv tus account qhov ntsuas no.
Lub Sijhawm Post: Apr-21-2023