Ntau tus neeg tsis tuaj yeem qhia qhov txawv ntawm hydroxyethyl cellulose thiab ethyl cellulose.Hydroxyethyl cellulose thiab ethyl cellulose yog ob yam khoom sib txawv.Lawv muaj cov yam ntxwv hauv qab no.
1 Hydroxyethyl cellulose:
Raws li non-ionic surfactant, ntxiv rau thickening, suspending, binding, flotation, film-forming, dispersing, tuav dej thiab muab kev tiv thaiv colloids, nws kuj muaj cov nram qab no zog:
1. HEC yog soluble nyob rau hauv dej kub los yog txias, thiab tsis precipitate ntawm kub los yog boiling, ua rau nws muaj ib tug ntau yam ntawm solubility thiab viscosity yam ntxwv, thiab tsis-thermal gelation;
2. Nws yog non-ionic thiab tuaj yeem ua ke nrog ntau yam ntawm lwm cov dej-soluble polymers, surfactants thiab ntsev, thiab yog ib qho zoo heev colloidal thickener uas muaj cov ntsiab lus electrolyte;
3. Lub peev xwm tuav dej yog ob zaug siab dua li ntawm methyl cellulose, thiab nws muaj kev tswj xyuas zoo dua.
4. Piv nrog rau kev lees paub ntawm methyl cellulose thiab hydroxypropyl methyl cellulose, lub peev xwm dispersing ntawm HEC yog qhov phem tshaj plaws, tab sis kev tiv thaiv colloid muaj peev xwm muaj zog tshaj plaws.
2 Ethyl cellulose
Nws yog non-ionic cellulose ether uas yog insoluble hauv dej tab sis soluble hauv organic solvents.Nws muaj cov yam ntxwv hauv qab no:
1. Tsis yooj yim rau hlawv.
2. Zoo thermal stability thiab zoo heev thermoplasticity.
3. Tsis muaj xim rau lub hnub ci.
4. Zoo yoog raws.
5. Zoo dielectric zog.
6. Nws muaj alkali zoo heev thiab tsis muaj zog acid kuj.
7. Kev ua haujlwm zoo los tiv thaiv kev laus.
8. Zoo tiv thaiv ntsev, txias thiab noo noo nqus.
9. ruaj khov rau cov tshuaj, kev cia ntev ntev yam tsis muaj kev puas tsuaj.
10. Compatible nrog ntau resins thiab zoo compatibility nrog tag nrho cov plasticizers.
11. Nws yog ib qho yooj yim los hloov xim nyob rau hauv muaj zog alkaline ib puag ncig thiab cua sov tej yam kev mob.
Post lub sij hawm: Nov-15-2022