Dzina lachi China la HPMC ndi hydroxypypyl. Siyopanda ionic ndipo nthawi zambiri imagwiritsidwa ntchito ngati wothandizira madzi osakanikirana. Ndi zinthu zomwe zimagwiritsidwa ntchito kwambiri kumatope.
Kupanga kwa HPMC kumakhala kofunikira kwambiri polysaccharide yopangidwa ndi ma alkirization ndi kumayambiriro kwa fiber thonje (nyumba zapakhomo). Palibe woyang'anira, sachita ndi ma iyo olipiritsa mu zinthu zowonda, ndipo amakhala ndi zingwe. Mtengo wake umakhalanso wotsika kuposa mitundu ina ya cellose et, motero amagwiritsidwa ntchito kwambiri matope osakaniza.
Ntchito ya hydroxypypyl methylcellulose (imatha kukulira matope osakanizika kuti akhale ndi mafayilo ena onyowa komanso kupewa tsankho. . .
Makutu apamwamba a hydroxypropyll methylcellulose ether, abwinopo omwe amasunga madzi. Makulidwe ndi gawo lofunikira la hpmc. Pakadali pano, opanga anzawo osiyanasiyana amagwiritsa ntchito njira zosiyanasiyana zoyezera mafayilo a HPMC. Njira zazikuluzikulu ndi Habertovisko, Huspler, UBBEELOHde ndi Brookfield.
Pazinthu zomwezo, chidwi cha mafayilo omwe chimayesedwa ndi njira zosiyanasiyana ndizosiyana kwambiri, ndipo ena amakhala ndi kusiyana pang'ono. Chifukwa chake, poyerekeza mawonekedwe, ziyenera kuchitika pakati pa njira zomwezi, kuphatikizapo kutentha, rotor, ndi zina. Zitafika zambiri za ma cellulose ether ether amalumikizana ndi madzi, malowo amasungunuka ndipo amapanga gel kuti mukulungitse mamolekyulu amadzi kuti asalowe pansi. Nthawi zina sizingafanane mosiyanasiyana ndikusungunuka ngakhale poyambitsa kwa nthawi yayitali, ndikupanga njira yopingasa kapena yovuta. Imakhudza kwambiri kusungira kwamadzi kwa maselo a cellulose, ndipo solobose ndi imodzi mwazinthu zomwe zimasankha cellulose ether ether ether ether.
Ubwino ndi mndandanda wofunikira wa methyl cellulose ether. MC yogwiritsa ntchito matope a ufa imafunikira kuti ikhale ufa, wokhala ndi madzi ochepa, ndipo zabwino zimafunikiranso 20% ~ 60% ya kukula kwa tinthu tochepa 63um. Ubwino umakhudza kusungunuka kwa hydroxypropyll methylcellulose ether. Coarsing MC nthawi zambiri amakhala granular, ndipo ndikosavuta kusungunuka m'madzi popanda kuphatikizika, koma kuchuluka kwa chilengedwe ndiodekha kwambiri, kotero sioyenera kugwiritsa ntchito matope a ufa wa ufa.
Mu matope a ufa wa ufa, MC imabalalitsidwa pakati pa zida zophatikizira monga kuphatikizika, fillet yabwino kwambiri ndi simenti, ndipo ufa wokwanira umatha kupewa methyl celluuse posakanikirana ndi madzi. MC ikawonjezeredwa ndi madzi kuti isungunuke, ndizovuta kwambiri kufalitsa ndikusungunuka. Kuchita bwino kwa MC sikungowononga kokha, komanso kumachepetsa mphamvu zakomweko kwa matope. Pamene matope owuma a ufa amaziika pamalo akuluakulu, liwiro la matope owuma a ufa lidzachepetsedwa kwambiri, ndipo ming'alu imawoneka chifukwa cha nthawi zosiyanasiyana. Chifukwa cha matope owombera ndi ntchito yomanga makina, kufunikira kwa kukoma bwino kumakhala kokwera chifukwa cha nthawi yofupikira. Nthawi zambiri, mafakiti apamwamba, abwinobwino amadzisungira madzi. Komabe, mafayilo apamwamba komanso okwera kwambiri olemera a MC, kutsika kolingana mu kusungunuka kwake kumabweretsa zovuta pa mphamvu ndi matope omanga matope.
Maonekedwe ake, zoonekeratu kuti zimakula kwambiri patavala matope, koma siyofanana mwachindunji. Matope owoneka bwino, ndiye kuti, pomanga, amawonetsedwa ngati kumamatira ku starpiper ndi kutsatira kwakukulu kwa gawo lapansi. Koma sizothandiza kukulitsa mphamvu ya matonthozo onyowa. Ndiye kuti, pomanga, magwiridwe antchito a Anti-Anti-A Anti-Shag sichidziwika. M'malo mwake, sing'anga zina zapakati komanso zochepa koma kusinthidwa methyl cellose celluse kukhala ndi ntchito yabwino kwambiri pokonzanso mphamvu ya matope onyowa.
Kusunga kwamadzi kwa HPMC kumakhudzananso ndi kutentha komwe kumagwiritsidwa ntchito, ndipo madzi osungira madzi a methyl cellulose ethel ethel amachepetsa ndi kuchuluka kwa kutentha. Komabe, pamalingaliro enieni, matope owuma nthawi zambiri amagwiritsidwa ntchito kutentha kwambiri (malo oposa 40) m'malo ambiri, omwe nthawi zambiri amathandizira kukongoletsa simenti komanso kuuma kwa matope a ufa. Kuchepa kwa kuchuluka kwa madzi kumadzetsa kumverera kowonekeratu kuti kugwirira ntchito komanso kusokonekera komwe kumakhudzidwa, ndipo ndizosavuta kuti muchepetse zinthu za kutentha pansi pa izi.
Pankhaniyi, methyl hydrothyl cellulose embixose zowonjezera zomwe zikuchitika pamaso paukadaulo. Ngakhale kuchuluka kwa methyl hydrothyl cellulose kumachulukitsa (chiilimwe cha chilimwe), kugwirira ntchito komanso kusokonekera komanso kusokoneza zosowa zomwe mungagwiritse ntchito. Mwa chithandizo china chapadera pa MC, monga kuwonjezera kuchuluka kwa chikondwerero, etc.
Mlingo wa HPMC sayenera kukhala wokwera kwambiri, apo ayi chidzakulitsa kuchuluka kwa matope, kumamatira papepala, ndipo nthawi yokhazikika idzakhala motalika kwambiri, komwe kumakhudza mgwirizano. Zogulitsa zamagetsi zimagwiritsa ntchito hpmc ndi ma viscosies osiyanasiyana, ndipo musagwiritse ntchito mafakitale akhama hpmc. Chifukwa chake, ngakhale hydroxypropyl zinthu zabwino zimakhala zabwino, zimakhala zoyamikiridwa akamagwiritsidwa ntchito bwino. Kusankha HPMC yoyenera ndiye udindo waukulu wa ogwira ntchito kuntchito. Pakadali pano, ogulitsa ambiri achinyengo amaphatikiza hpmc, ndipo mtunduwo ndi wosauka kwambiri. Mukamasankha celloulse, labotale iyenera kuchita ntchito yabwino pakuyesa kuonetsetsa kukhazikika kwa zopangidwa ndi matope, ndipo musakhale wadyera wopepuka ndikuyambitsa kutayika kosafunikira.
Post Nthawi: Meyi-04-2023