Cellulose ether ndi polymer contrated contrasized kuchokera ku cellulose ya chilengedwe kudzera mu kusintha kwa ma erizer, ndipo ndi wabwino kwambiri wotsatsa komanso wosunga madzi.
Kafukufuku
Cellulose agwiritsidwa ntchito kwambiri m'matope osakanikirana mwazaka zaposachedwa, kuphatikiza kwambiri cellulose ya ether ether ethelose etheluluse ethelose ether ether ether. ) Ndi hydroxypropyl methy cellulose ether ether (hpmc). Pakadali pano, palibe malipoti ambiri pamayeso a njira yokweza kwa cellulose ether. M'dziko lathu, miyezo ina ndi zotuwa zokhazokha zimalepheretsa njira yoyeserera mafayilo a cellulose ether.
Njira yokonzekera ya cellulose ether
Kukonzekera kwa methyl cellulose ether sol
Methyl cellose yolongosola ma cellose odekha okhala ndi magulu a meya omwe ali m'magulu molekyulu, monga MC, hemoc ndi hpmc. Chifukwa cha hydrophobicity ya gulu la methyl, ma epelse othetsera mitu ya methyl ali ndi mafuta owombera, ndiye kuti, iwo ndi onunuka m'madzi otentha pamtunda wotentha kwambiri kuposa kutentha kwawo kwa mikate (pafupifupi 60-80 ° C). Pofuna kupewa exuluse exuluse kuti mupange ma agglomerates, kutentha madziwo pamwamba pa kutentha kwake, pafupifupi 80 ~ ° Conler mu madzi otentha, pitirizani kusuntha, kusunthira kuwulutsa, pitirizani kukhala ozizira Kutentha, kumatha kukonzedwa mu celluloome ensol eleul.
Zosintha zosungunuka za methyllulose yopangidwa ndi manja
Pofuna kupewa kuphatikizika kwa ethel ether mu cellulose njira yofatsa, nthawi zina opanga amakhala ndi mankhwala osokoneza bongo pa cellded cellulose ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel ethel embin kuti achedwetse. Kusintha kwake kumachitika pambuyo pa cellulose ether ethermation, kotero imatha kubalalitsidwa mwachindunji m'madzi ozizira ndi mtengo wa suutral popanda kupanga ma Applomerates. The higher the pH value of the solution, the shorter the dissolution time of the cellulose ether with delayed dissolution properties. Sinthani mtengo wa pH ya njira yothetsera phindu lalikulu. Alkalinididity imachotsa kuchedwa kwa cellulose ether, ndikupangitsa kuti ma cellulose azikhala ndi ma agglomerates kuti asungunuke. Chifukwa chake, mtengo wamtengo wa yankho uyenera kuukitsidwa kapena kutsitsidwa pambuyo pa cellulose ether ether omwazika.
Zosintha zosungunuka za methyllulose-zokhala ndi zida
Kukonzekera kwa hydroxyethyl cellulose ether soluse
Hydroxyethyl cellulose ether (hec) alibe malo osungira mafuta, motero, hec popanda chithandizo chidzapanganso ma oplomerates m'madzi otentha. Opanga nthawi zambiri amakhala ndi mankhwala pachimake pa ufa pa ufa wochedwetsa kufalitsa, kuti uwonongeke mwachindunji m'madzi ozizira ndi mtengo wa sululu popanda kupanga ma Applomerates. Mofananamo, yankho lokhala ndi chibale kwambiri, Hec imathanso kupanga ma agglomerates chifukwa chochedwa kusungunuka. Popeza simenti slurry ndi mkaka hydration ndi mtengo wamtengo wa the yankholi ndi pakati pa 12 ndi 13, kusunthika kwa celly ku cellulose komwe kumalikola pang'ono.
Zosintha Zosintha za Hec
Pomaliza ndi Kusanthula
1. Kubalalika
Pofuna kupewa zovuta pa nthawi yoyeserera chifukwa cha kusungunuka pang'onopang'ono kwa zinthu zomwe zinthu zimathandizira, ndikulimbikitsidwa kugwiritsa ntchito madzi otentha kukonzekera.
2. Njira yozizira
Mafuta a Exuluse ayenera kusunthidwa ndikukhazikika pamtunda wozungulira kuti muchepetse kuchuluka kwa kuzizira, zomwe zimafuna nthawi yoyeserera.
3. Njira yosangalatsa
Cellulose itawonjezedwa m'madzi otentha, onetsetsani kuti mukulimbikitsa. Kutentha kwamadzi kukugwera pansi kutentha kwa gele, cellulose ether iyamba kusungunuka, ndipo yankho lakelo lidzawoneka. Pakadali pano, liwiro losangalatsa liyenera kuchepetsedwa. Pambuyo pa njira yothetsera mawu, imayenera kuyimirira kwa maola opitilira 10 asanakwane pang'onopang'ono pansi kuti zitheke ndikuzimiririka.
Malumu a mpweya mu cellulose eyather
4..
Mtundu wa ether wa cellulose ndi madzi uyenera kuyesedwa molondola, ndipo yesetsani kuti musadikire yankho kuti mukwaniritse ma vispon apamwamba musanathenso kukonza madzi.
5. Kuyesa kwa Viscton
Chifukwa cha Thixotropy of cellulose eleuluse yankho, poyesa kuwoneka, pomwe rotior ya wotchi yovota imayikidwa mu yankho, imasokoneza njirayo ndikukhumudwitsa zotsatira zake. Chifukwa chake, rotor itayikidwa mu yankho, iyenera kuloledwa kuyimitsidwa kwa mphindi 5 musanayesedwe.
Post Nthawi: Mar-22-2023