hydroxyethyl cellulose ke eng?

hydroxyethyl cellulose ke eng?

Hydroxyethyl cellulose (HEC), 'mala o mosoeu kapa o mosehla o mosehla, o sa nkhang hamonate, o se nang chefo o nang le fibrous kapa powdery solid, o lokiselitsoeng ke etherification ea alkaline cellulose le ethylene oxide (kapa chlorohydrin), e leng ea mofuta oa Nonionic soluble cellulose ethers. Hobane HEC e na le thepa e ntle e kang ho teteka, ho emisa, ho qhalakanya, emulsifying, ho tlamahane, ho etsa filimi, ho sireletsa mongobo le ho fana ka li-colloid tse sireletsang, e 'nile ea sebelisoa haholo ho hlahloba oli, ho roala, ho haha, meriana le lijo, masela, ho etsa pampiri le li-polymers. Polymerization le likarolo tse ling.

Hydroxyethyl cellulose e sebelisoa haholo indastering ea ho roala. Ha re shebeng hore na e sebetsa joang ka li-coatings:

Ho etsahala'ng ha hydroxyethyl cellulose e kopana le liphahlo tse thehiloeng metsing?

Joalo ka sehlahisoa se seng sa ionic, hydroxyethyl cellulose e na le lintho tse latelang ho kenyelletsa ho tenya, ho emisa, ho tlama, ho phaphamala, ho etsa filimi, ho qhalakanya, ho boloka metsi le ho fana ka li-colloid tse sireletsang:

HEC e qhibiliha ka metsing a chesang kapa a batang, 'me ha e chese ka mocheso o phahameng kapa ho belisoa, ho etsa hore e be le mefuta e mengata ea ho qhibiliha le litšoaneleho tsa viscosity, hammoho le gelling e sa chesang;

Bokhoni ba ho boloka metsi bo habeli ho feta ba methyl cellulose, 'me bo na le taolo e ntle ea phallo;

Non-ionic ka boeona e ka phela hammoho le mefuta e mengata e mengata ea li-polymers tse qhibilihang ka metsing, li-surfactants le matsoai, 'me ke motsoako o babatsehang oa colloidal o nang le litharollo tse phahameng tsa electrolyte;

Ha ho bapisoa le methyl cellulose e tsebahalang le hydroxypropyl methyl cellulose, bokhoni ba ho qhalaHECke eona e mpe ka ho fetisisa, empa bokhoni ba colloid bo sireletsang ke bona bo matla ka ho fetisisa.

Kaha hydroxyethyl cellulose e entsoeng ka holim'a metsi ke phofo kapa fibrous solid, Shandong Heda o u hopotsa hore u ele hloko lintlha tse latelang ha u lokisetsa joala ba 'mè ba hydroxyethyl cellulose:

(1) Pele le ka mor'a ho eketsa hydroxyethyl cellulose, e tlameha ho bolokoa e tsosoa ho fihlela tharollo e hlakile ka ho feletseng le e hlakileng.

(2) E tlameha ho hloekisoa butle-butle ka har'a moqomo oa ho kopanya, 'me u se ke ua kopanya ka ho toba hydroxyethyl cellulose le hydroxyethyl cellulose ka har'a moqomo oa ho kopanya ka bongata kapa ka mokhoa oa li-lumps le libolo.

(3) Mocheso oa metsi le pH ea metsi li na le kamano e totobetseng le ho qhibiliha ha hydroxyethyl cellulose, kahoo tlhokomelo e khethehileng e lokela ho lefshoa ho eona.

(4) Le ka mohla u se ke ua kenya lintho tse ling tsa alkaline motsoakong pele phofo ea hydroxyethyl cellulose e kolobisoa ka metsi. Ho phahamisa pH feela ka mor'a ho kolobisa ho tla thusa ho qhibiliha.

(5) Ho fihlela moo ho ka khonehang, eketsa moemeli oa antifungal esale pele.

(6) Ha u sebelisa high-viscosity hydroxyethyl cellulose, mahloriso a joala ba 'mè ha aa lokela ho ba holimo ho 2.5-3% (ka boima ba' mele), ho seng joalo joala ba 'mè bo thata ho bo tšoara.