Focus on Cellulose ethers

Ukubaluleka Nokusetshenziswa Kwe-Hydroxyethyl Cellulose

1. Izakhiwo ze-hydroxyethyl cellulose

Lo mkhiqizo umhlophe noma uphuzi ngokukhanyayo awunaphunga futhi ugeleza kalula impushana, isilinganiso sesefo esingu-40 semesh ≥99%; izinga lokushisa elithambile: 135-140 ° C; ukuminyana okubonakalayo: 0.35-0.61g/ml; izinga lokushisa lokubola: 205-210 ° C; isivinini esivuthayo Kancane; izinga lokushisa elilinganayo: 23°C; 6% ngo-50%rh, 29% at 84%rh.

Iyancibilika emanzini abandayo nasemanzini ashisayo, futhi ngokuvamile ayincibiliki ezincibilikisini eziningi eziphilayo. I-viscosity ishintsha kancane kububanzi bevelu engu-PH 2-12, kodwa i-viscosity yehla ngale kwalolu bubanzi.

2. Izakhiwo ezibalulekile

Njengomuntu osebenza ngaphansi kwe-non-ionic,i-hydroxyethyl celluloseinalezi zakhiwo ezilandelayo ngaphezu kokujiya, ukumisa okwesikhashana, ukubopha, ukuntanta, ukwenza ifilimu, ukuhlakazeka, ukugcinwa kwamanzi nokuhlinzeka nge-colloid evikelayo:

1. I-HEC iyancibilika emanzini ashisayo noma emanzini abandayo, futhi ayidli ngokushisa okuphezulu noma ukubilisa, okwenza ibe nohlu olubanzi lokuncibilika, izici ze-viscosity kanye ne-gelation engashisi.

2. Ayiyona i-ionic futhi ingahlala nohlu olubanzi lwama-polymers ancibilika emanzini, ama-surfactants, nosawoti. Kuyi-thickener enhle kakhulu ye-colloidal yezixazululo ze-electrolyte zokugxila okuphezulu.

3. Umthamo wokugcina amanzi uphakeme ngokuphindwe kabili kunalowo we-methyl cellulose, futhi unokulawula ukugeleza okungcono.

4. Uma kuqhathaniswa ne-methyl cellulose eyaziwayo kanye ne-hydroxypropyl methyl cellulose, i-HEC inekhono elibi kakhulu lokuhlakaza, kodwa ikhono eliqinile lokuvikela i-colloid.

3. Ukusetshenziswa kwe-hydroxyethyl cellulose

Imvamisa isetshenziswa njengama-thickeners, ama-ejenti okuzivikela, ama-adhesives, stabilizers kanye nezithasiselo zokulungiselela ama-emulsions, ama-jellies, amafutha okugcoba, ama-lotions, ama-eye cleansers, ama-suppositories namaphilisi, futhi asetshenziswe njengama-gel e-hydrophilic, izinto zamathambo, Ingasetshenziswa ukulungisa i-matrix- thayipha amalungiselelo okukhululwa okuqhubekayo, futhi angasetshenziswa njengesiqinisi ekudleni.


Isikhathi sokuthumela: Dec-27-2022
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