IHydroxYethyl Methyl Cellulose HemcIngasetshenziswa njenge-ejenti evikela i-colloid, i-emulsifier kanye ne-dispsant ngenxa yokusebenza kwayo okusebenzayo kwesisombululo samanzi. Isibonelo sohlelo lwayo kanjena: Umphumela weHydroxYethyll Methyl Cellulose kwizakhiwo zikasimende. IHydroxYethyl Methylcellulose iyi-powder emhlophe engenamkhawulo, engenambitha, engenamkhawulo, i-nontoxic white ehlanza amanzi abandayo ukwakha isixazululo esicacile, esibonakalayo. Inezakhiwo zokuqina, ukubopha, ukusabalalisa, ukusabalalisa, ukwakha amafilimu, ukumisa amafilimu, ukumisa ama-adsorbing, ukugada, indawo esebenzayo, ukugcina umswakama nokuvikela umswakama nokuvikela ama-colloids. Ngenxa yomsebenzi osebenzayo wekhambi elinamanzi, lingasetshenziswa njenge-ejenti evikela i-colloid, i-emulsifier kanye ne-dispersant. I-Hydroxyyethyl methyllulose isixazululo esinamanzi ane-hydrophility enhle futhi i-ejenti esebenza ngempumelelo.
lungiselela
Indlela yokulungiselela i-hydroxyethyll methyl cellulose, indlela ehlanganisa ukusebenzisa ukotini okucwengiwe njengento eluhlaza kanye ne-ethylene oxide njenge-ejenti yokuphelelisela ukulungiselelaIHydroxYethyl Methyl Cellulose. Izinto zokusetshenziswa zokulungiselela i-hydroxyethyllllllllls zilungiselelwe izingxenye ngesisindo: 700-800 izingxenye zengxube ye-toluene ne-sopropanol njenge-solvent, izingxenye ezingama-30-40 zamanzi, izingxenye ezingama-70-80 ze-sodium hydroxide, 80-85 izingxenye ze ukotini ocwengiwe, izingxenye ezingama-20-28 ze-oxyethane, izingxenye ezingama-80-90 ze-methyl chloride, kanye nezingxenye eziyi-16-19 ze-glacial acetic acetic acid; Izinyathelo ezithile yilezi:
Isinyathelo sokuqala, ku-Reactoror, engeza ingxube ye-toluene ne-isopropanol, amanzi, ne-sodium hydroxide, bafudumale kuze kube ngu-60 ~ 80 ℃, bafakwe ngaphansi kwemizuzu engama-20 ~ 40;
Isinyathelo sesibili, i-alkalization: pholisa izinto ezingenhla ziye ku-30 ~ 50 ℃, engeza ukotini ocwengekile, ufafaze inhlanganisela ye-toluene ne-sopropanol nge-0.006MPA, bese ugcwalisa u-Alkali ngemuva kokubuyisela esikhundleni se-alkalization Izimo zinjengokulandelayo: Isikhathi se-Alkalization singamahora ama-2, kanti izinga lokushisa le-alkalization lingama-30 ° C kuye ku-50 ° C;
Isinyathelo sesithathu, ukusheshisa: I-alkalization isiqediwe, i-Reactor ikhishwe ku-0.05 ~ 0.07mpa, i-ethylene oxide ne-methyl chloride ziyangezwa, futhi zigcinwe imizuzu engama-30 ~ 50; isigaba sokuqala sokuthezeka: 40 ~ 60 ℃, 1.0 ~ 2.0 ihora, ingcindezi ilawulwa phakathi kuka-0.150.3MPA; isigaba sesibili sokuthezeka: 60 ~ 90 ℃, amahora angama-2.0 ~ ama-2,5, ingcindezi ilawulwa phakathi kuka-0.40.8MPA;
Isinyathelo se-4, ukungathathi hlangothi: Faka amamitha aceli aceli aceli acijile ngaphambi kokungathathi hlangothi, ukufudumeza okungu-75 ~ 80 ℃ ukwenza i-verapization, izinga lokushisa likhuphuka liye ku-102 ℃, kanye nenani le-PH lokutholwa 68 Lapho ukunqunyelwa kwezulu sekuphothuliwe, ithangi lemvula ligcwele amanzi ompompi aphathwe idivaysi yokubuyisela emuva kwe-osmosis ku-90 ℃ ~ 100 ℃;
Isinyathelo sesihlanu, ukugeza iziqu: Izinto ezibonakalayo zesine zifakwe kwi-centrifuge centrifuge centrifuge, futhi impahla ehlukanisiwe idluliselwa echibini eligeza eligcwele ngaphambi kwesikhathi, futhi lokho kugezwa;
Isinyathelo sesithupha, ukomisa okwenziwe nge-centrifugal: Izinto ezihlanjiwe zithuthelwa esomisi ngesikulufu esivundlile se-centrifuge, impahla yomiswa ngo-150-170 ° C, futhi impahla eyomile ihlehlisiwe futhi ihlanganiswe.
Qhathanisa ne-ekhonaI-Cellulose EtherUbuchwepheshe Bokukhiqiza, ukusungulwa kwamanje kwamukela i-Ethylene Oxide njenge-ejenti yokuphelisa i-methyl cellulose, futhi inekhono elihle le-anti-strew ngoba linokuqina okuhle kwe-hydroxyethyl ngoba ukuqina kwe-tuspew kanye nokuphikiswa kombumba ngesikhathi sokugcina isikhathi eside. Lungasetshenziswa esikhundleni sezinye izithambiso ze-cellulose.
Isikhathi sePosi: APR-25-2024