Mayelana nendlela yokufaka isicelo yobungcweti eyamukelwa imikhiqizo yamakhemikhali, kuyadingeka ukuheha ukunaka nokunaka kwawo wonke opharetha wokusebenza, ngoba lokhu kuyisihluthulelo sokwenza izinqumo eziphumelelayo kanye nokuqedwa kahle kwephrojekthi ngayinye yokwakha.Uma indlela yokuyenza ingase ibe nomthelela omkhulu ekusetshenzisweni okuphephile komkhiqizo, isibonelo, i-hydroxypropyl methylcellulose, okwamanje edume kakhulu emikhakheni ehlukahlukene, ake siyibheke ndawonye ngezansi.
Ukugcinwa kwamanzi kwe-methylcellulose kuncike enanini layo elingeziwe, i-viscosity, ukucoleka kwezinhlayiyana nezinga lokuqedwa.Ngokuvamile, uma inani elingeziwe likhulu, ukucoleka kuncane, futhi i-viscosity inkulu, izinga lokugcinwa kwamanzi liphezulu.Phakathi kwazo, inani lokwengeza linomthelela omkhulu kakhulu ekugcinweni kwamanzi, futhi izinga le-viscosity alilingani ngokuqondile nezinga lokugcinwa kwamanzi.Izinga lokuhlakazeka lincike kakhulu ezingeni lokuguqulwa kwendawo yezinhlayiya ze-cellulose kanye nokucoleka kwezinhlayiyana.Phakathi kwama-cellulose ether angenhla, i-methyl cellulose ne-hydroxypropyl methyl cellulose anamazinga aphezulu okugcina amanzi.
I-Methylcellulose iyancibilika emanzini abandayo, futhi kuyoba nzima ukuyihlakaza emanzini ashisayo.Isixazululo saso esinamanzi sizinzile kakhulu ebangeni le-pH=3~12.Inokuhambisana okuhle nesitashi, i-guar gum, njll. kanye nama-surfactants amaningi.Lapho izinga lokushisa lifinyelela izinga lokushisa le-gelation, i-gelation iyenzeka.
Mayelana nokusetshenziswa ngendlela efanele kwe-hydroxypropyl methylcellulose esikwethulele yona ngenhla, kubalulekile ukuheha ukunaka nokunaka kwawo wonke ama-opharetha, ukuze kuqinisekiswe kangcono ukusebenza kwalo mkhiqizo wamakhemikhali.
Isikhathi sokuthumela: Mar-30-2023