I-CMC (carboxymethyl cellulose) embonini yokwenza iphepha iyisengezo esibalulekile esisetshenziselwa ukuthuthukisa ikhwalithi nokusebenza kwephepha. I-CMC iyinhlanganisela ye-polymer encibilika emanzini enezakhiwo ezinhle zokulungiswa kwe-viscosity futhi idlala indima ebalulekile ekwenzeni iphepha.
1. Izakhiwo eziyisisekelo ze-CMC
I-CMC iphuma ku-cellulose, eyenziwa ngokusabela ingxenye ye-hydroxyl ye-cellulose nge-chloroacetic acid. Inekhono elihle kakhulu lokuncibilika kwamanzi kanye nekhono lokulungisa i-viscosity. I-CMC yenza isixazululo se-viscous ngemuva kokuncibilika emanzini, okwenza kube usizo kakhulu ezinhlelweni ezihlukene zezimboni.
2. Iqhaza le-CMC embonini yokwenza amaphepha
Enqubweni yokwenza iphepha, i-CMC isetshenziswa kakhulu njenge-adhesive, thickener kanye ne-stabilizer. Imisebenzi yayo ihlanganisa:
2.1 Thuthukisa amandla ephepha
I-CMC ingathuthukisa ngempumelelo ukubumbana nokungezwani kwephepha, futhi ithuthukise ukumelana nezinyembezi nokumelana nokugoqa kwephepha. Indlela yokusebenza kwawo ukwenza iphepha libe namandla futhi liqine ngokwengeziwe ngokuthuthukisa amandla okubopha phakathi kwemicu ye-pulp.
2.2 Thuthukisa ukucwebezela nokushelela kwephepha
Ukwengeza i-CMC kungathuthukisa ikhwalithi yephepha futhi kwenze ingaphezulu lephepha libe bushelelezi. Ingakwazi ukugcwalisa ngokuphumelelayo izikhala ebusweni bephepha futhi inciphise ukuqina kobuso bephepha, ngaleyo ndlela ithuthukise ukucwebezela nokuvumelana nezimo zephepha.
2.3 Lawula i-viscosity ye-pulp
Ngesikhathi senqubo yokwenza iphepha, i-CMC ingakwazi ukulawula ngempumelelo i-viscosity ye-pulp futhi iqinisekise uketshezi nokufana kwe-pulp. I-viscosity efanele isiza ukusabalalisa ngokulinganayo i-pulp, ukunciphisa ukukhubazeka kwephepha, nokuthuthukisa ukusebenza kahle kokukhiqiza.
2.4 Thuthukisa ukugcina amanzi ku-pulp
I-CMC inomthamo omuhle wokugcina amanzi futhi inganciphisa ukulahleka kwamanzi kwe-pulp phakathi nenqubo yokubumba. Lokhu kunganciphisa ukuncipha kwephepha kanye nezinkinga ze-deformation ezenzeka phakathi nenqubo yokomisa, ngaleyo ndlela kuthuthukise ukuzinza kwephepha.
3. Ukulungiswa kwe-viscosity ye-CMC
I-viscosity ye-CMC iyipharamitha eyinhloko yomphumela wayo enqubweni yokwenza iphepha. Ngokwezidingo ezahlukene zokukhiqiza, i-viscosity ye-CMC ingashintshwa ngokulungisa ukugxila kwayo kanye nesisindo samangqamuzana. Ngokuqondile:
3.1 Umthelela wesisindo samangqamuzana
Isisindo samangqamuzana e-CMC sinomthelela oqondile ku-viscosity yayo. I-CMC enesisindo esikhulu samangqamuzana ngokuvamile ine-viscosity ephakeme, ngakho-ke i-CMC enesisindo esikhulu samangqamuzana isetshenziswa ezinhlelweni ezidinga i-viscosity ephezulu. I-CMC enesisindo esiphansi yamangqamuzana ifanele izikhathi ezidinga i-viscosity ephansi.
3.2 Umphumela wokugxilisa isixazululo
Ukugxila kwesixazululo se-CMC nakho kuyisici esibalulekile esithinta i-viscosity. Ngokuvamile, ukuphakama kwesisombululo se-CMC kuyanda, kukhulu ukubukeka kwayo. Ngakho-ke, ekukhiqizeni kwangempela, ukugxiliswa kwesisombululo se-CMC kudinga ukulungiswa ngokuvumelana nezidingo ezithile ukuze kuzuzwe izinga elidingekayo le-viscosity.
4. Izinyathelo zokuqapha zokusetshenziswa kwe-CMC
Lapho usebenzisa i-CMC enqubweni yokwenza amaphepha, amaphuzu alandelayo adinga ukuqashelwa:
4.1 Isilinganiso esinembile
Inani le-CMC elengeziwe kufanele lilungiswe ngokuya ngezidingo ezithile zephepha. Uma kungeziwe kakhulu, kungase kubangele ukuthi i-pulp viscosity ibe phezulu kakhulu futhi ithinte inqubo yokukhiqiza; uma kungenanele, umphumela olindelekile ungase ungafinyelelwa.
4.2 Ukulawulwa kwenqubo yokuhlakazwa
I-CMC idinga ukuncibilika emanzini abandayo ukugwema ukucekelwa phansi ngesikhathi sokushisisa. Inqubo yokuhlakazwa kufanele inyakaziswe ngokugcwele ukuze kuqinisekiswe ukuthi i-CMC ihlakazwa ngokuphelele futhi igwema ukuhlangana.
4.3 Umthelela yenani le-pH
Ukusebenza kwe-CMC kuzothintwa inani le-pH. Ekukhiqizeni iphepha, uhla lwe-pH olufanele kufanele lugcinwe ukuze kuqinisekiswe umphumela omuhle kakhulu we-CMC.
I-CMC idlala indima ebalulekile embonini yokwenza iphepha, futhi amandla ayo okulungisa i-viscosity athinta ngqo ikhwalithi nokusebenza kwephepha. Ngokukhetha kahle nokusebenzisa i-CMC, amandla, isicwebezelisi, ukushelela kanye nokusebenza kahle kwephepha kungaba ngcono kakhulu. Kodwa-ke, ekusebenzeni kwangempela, ukugxila kanye ne-viscosity ye-CMC kudinga ukulungiswa ngokunembile ngokwezidingo ezithile zokukhiqiza ukuze kuqinisekiswe umphumela wayo omuhle kakhulu.
Isikhathi sokuthumela: Aug-13-2024