Abantu abaningi abakwazi ukubona umehluko phakathi kwe-hydroxyethyl cellulose ne-ethyl cellulose. I-hydroxyethyl cellulose kanye ne-ethyl cellulose yizinto ezimbili ezihlukene. Zinezici ezilandelayo.
1 I-Hydroxyethyl cellulose:
Njenge-surfactant engeyona i-ionic, ngaphezu kokuqina, ukumiswa, ukubopha, ukuntanta, ukwakha ifilimu, ukusabalalisa, ukugcina amanzi kanye nokunikeza ama-colloid avikelayo, inezakhiwo ezilandelayo:
1. I-HEC iyancibilika emanzini ashisayo noma abandayo, futhi ayivuthi uma izinga lokushisa eliphezulu noma libila, okwenza ibe nezici eziningi zokuncibilika kanye nokuthamba, kanye ne-gelation engashisi;
2. Ayiyona i-ionic futhi ingahlala ndawonye nezinye izinhlobo eziningi zama-polymer ancibilika emanzini, ama-surfactants kanye nosawoti, futhi iyisithako esihle kakhulu se-colloidal esiqukethe izixazululo ze-electrolyte ezigxile kakhulu;
3. Umthamo wokugcina amanzi uphakeme ngokuphindwe kabili kunowe-methyl cellulose, futhi unokulawulwa okungcono kokugeleza kwamanzi.
4. Uma kuqhathaniswa ne-methyl cellulose eyaziwayo kanye ne-hydroxypropyl methyl cellulose, ikhono lokuhlakaza le-HEC libi kakhulu, kodwa i-colloid evikelayo inekhono eliqine kakhulu.
2 I-Ethyl cellulose
Kuyi-non-ionic cellulose ether engancibiliki emanzini kodwa encibilika ezinyibilikisini eziphilayo. Inezici ezilandelayo:
1. Akulula ukusha.
2. Ukuqina okuhle kokushisa kanye ne-thermoplasticity enhle kakhulu.
3. Akukho ukushintsha kombala elangeni.
4. Ukuguquguquka okuhle.
5. Izakhiwo ezinhle ze-dielectric.
6. Inokumelana okuhle kakhulu kwe-alkali kanye nokumelana ne-asidi ebuthakathaka.
7. Ukusebenza okuhle kokulwa nokuguga.
8. Ukumelana okuhle nosawoti, ukubanda kanye nokumuncwa komswakama.
9. Ihlala isikhathi eside ingagugi kumakhemikhali, ingagcinwa isikhathi eside ngaphandle kokuwohloka.
10. Iyahambisana nama-resin amaningi futhi ihambisana kahle nawo wonke ama-plasticizer.
11. Kulula ukushintsha umbala ngaphansi kwesimo sezulu esinamandla se-alkaline kanye nezimo zokushisa.
Isikhathi sokuthunyelwe: Novemba-15-2022