Hydroxypropylmethylrubicin (HPMC) yog cov khoom siv cellulosic, pulp lossis paj rwb uas tuaj yeem siv los ua kom zoo nkauj ntoo. Ua ntej alkalization lossis alkalization txheej txheem yuav tsum raug rhuav tshem. Kev puas tsuaj tuaj yeem rhuav tshem cov qauv ntawm cov ntaub ntawv cellulose, yog li txo cov polymerization thiab crystallinity, ua rau nws qhov chaw tshwj xeeb, yog li ua kom cov matrix tuaj yeem ua macromolecular ternary thiab cellulose.
Hydroxymethylcellulose yog siv los ua cov substrate hauv kev tsim roj. Cov qauv siv hluav taws xob tuaj yeem ua tiav kev siv cov suab thaj, txhim kho kev siv cov khoom siv, txo cov seem ntawm cov substrate hauv cov kua fermentation, thiab txo cov nqi kho dej khib nyiab. Cov yam ntxwv ntawm qhov sib tov yog qhov tsim nyog rau kev ua kom zoo ntawm batch, pub-batch thiab cov txheej txheem fermentation tas li, zam kev tswj hwm ntawm cov khoom nruab nrab thiab cov nqi dilution, thiab tseem txhawb kev hloov kho ntawm cov txheej txheem fermentation. Txij li thaum HPMC muaj qhov ua haujlwm zoo ib yam li lwm cov dej-soluble ethers, nws tuaj yeem siv los ua tus neeg sawv cev ua yeeb yaj kiab, thickener, emulsifier thiab stabilizer rau latex xim thiab dej-soluble resin xim, nrog zoo heev hnav tsis kam, txheej txheej thiab adhesion tsom rau. Txhim kho qhov nro saum npoo, acid-base stability thiab compatibility nrog cov xim hlau xim.
Kev sib xyaw ntawm hydroxypropylmethylcellulose (HPMC) tsis zoo, tab sis nyob rau hauv txoj cai, tab sis substrate poob, base..etherification, dissolution
Tus neeg sawv cev rov qab los ntawm centrifugation, ntxuav, ziab thiab kov txhua qhov chaw yog qhov muaj txiaj ntsig zoo hauv kev txawj ntse thiab kev paub.
Cov cuab yeej pabcuam thiab kev tswj xyuas los ntawm kev saib xyuas yuav pab ua kom cov khoom zoo thiab txhim khu kev qha ntau lawm. Muaj feem xyuam rau cov dej hauv hypromellose qhuav-mix mortar's water-retaining hydroxypropyl methylcellulose ether mortar los txhawb kev nruam dej ntawm cov cement, mortar thiab substrate kom lub sij hawm adhesion.
Muaj cov nyhuv tseem ceeb ntawm kev tuav dej, dej tuav, kev tuav dej noo yog putty hmoov, adhesion thiab lubrication zog. Siv dav hauv kev tsim kho kev lag luam, kev lag luam xim thiab ntau lwm yam lag luam, hydroxypropyl methylcellulose yog qhov tseem ceeb rau kev lag luam.Kev tsim cov hydroxypropyl methylcellulose. Lub thermal gelation kub yog siab dua li ntawm methylcellulose. Txiv qaub thiab dej qab zib muaj me ntsis cuam tshuam rau kev ua tau zoo, tab sis tuaj yeem ua kom nrawm nrawm ntawm cov matrix thiab ua kom cov viscosity. Thaum polyvinyl cawv, hmoov txhuv nplej siab ether, zaub pos hniav thiab hydroxypropyl methylcellulose xim, thiab lwm yam., cov khoom lag luam ntawm cov qauv saum toj no. Thaum siv mortar, gypsum, putty hmoov los yog lwm yam ntaub ntawv ua nplaum, nws tuaj yeem txhim kho kev ua haujlwm thiab ua haujlwm ntev. Yuav siv tau rau kev kho kom zoo nkauj, muab tshuaj txhuam cov vuas, marble, yas thiab txo kev siv cov cement cuav qia. Cov dej khaws cia slurry tom qab ziab yuav tsis tawg sai heev, thiab lub zog tom qab kho tau zoo dua.
Post lub sij hawm: Dec-20-2022