Hyxyethyl cellulose ke eng?

Hyxyethyl cellulose ke eng?

Hydroxyethyl cellulose (HEC), e tšoeu kapa e mosehla o mosehla, e se nang monko, e se nang chefo e tiileng kapa e phofo, e lokisitsoeng ka ho etherifying 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 joalo ka ho teteana, ho emisa, ho qhalakanya, ho kopanya, ho etsa filimi, ho sireletsa mongobo le ho fana ka li-colloid tse sireletsang, e sebelisitsoe haholo lipatlisisong tsa oli, ho koahela, kaho, meriana le lijo, masela, ho etsa pampiri le li-polymer. Polymerization le masimo a mang.

Hydroxyethyl cellulose e sebelisoa haholo indastering ea ho roala. A re shebeng hore na e sebetsa joang ho roala:

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

Jwalo ka sesebediswa se seng sa ionic, hydroxyethyl cellulose e na le thepa e latelang ho phaella ho ho teteana, ho emisa, ho tlama, ho flotation, ho etsa filimi, ho qhalanya, ho boloka metsi le ho fana ka di-colloid tse sireletsang:

HEC e qhibiliha metsing a chesang kapa a batang, 'me ha e potlake mochesong o phahameng kapa e belang, e leng se etsang hore e be le mefuta e mengata ea litšobotsi tsa ho qhibiliha le ho teteana, hammoho le gelling e sa cheseng;

Bokgoni ba ho boloka metsi bo habeli ho feta methyl cellulose, mme bo na le taolo e betere ya phallo;

Non-ionic ka boeona e ka sebetsa hammoho le mefuta e mengata e fapaneng ea li-polymer tse ling tse qhibilihang ka metsing, li-surfactant le letsoai, 'me ke setenya se setle sa colloidal se nang le litharollo tsa electrolyte tse nang le mahloriso a mangata;

Ha ho bapisoa le methyl cellulose e tsebahalang le hydroxypropyl methyl cellulose, bokhoni ba ho qhalakanya baHECke e mpe ka ho fetisisa, empa bokhoni ba ho sireletsa ba colloid ke bona bo matla ka ho fetisisa.

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

(1) Pele le ka mora ho eketsa hydroxyethyl cellulose, e lokela ho dula e hlohlelletswa ho fihlela tharollo e bonaletsa ka botlalo ebile e hlakile.

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

(3) Thempereichara ea metsi le boleng ba pH ba 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 eketsa lintho tse ling tsa alkaline motswakong pele phofo ea hydroxyethyl cellulose e kolobisoa ka metsi. Ho phahamisa pH feela ka mor'a ho kolobisa ho tla thusa ho qhibiliha.

(5) Ka hohle kamoo ho ka khonehang, eketsa sebolaya-mafu esale pele.

(6) Ha o sebedisa hydroxyethyl cellulose e nang le viscosity e phahameng, bongata ba jwala ba mme ha boa lokela ho feta 2.5-3% (ka boima), ho seng jwalo jwala ba mme bo thata ho bo sebetsana.