I-CMC yokugqoka iphepha

I-Sodium Carboxymethyl Cellulose (CMC)iyinhlanganisela ebalulekile ye-polymer encibilika emanzini, esetshenziswa kabanzi ekwenzeni amaphepha, ezindwangu, ekudleni, emithini, kumakhemikhali ansuku zonke nakweminye imikhakha. Embonini yokwenza amaphepha, ikakhulukazi ekumbozeni amaphepha (ukumboza), i-CMC isibe ngesinye sezithasiselo ezibalulekile zokumboza ngenxa yesakhiwo sayo esihle sokwakha amafilimu, ukunamathela, ukuhlakazeka kanye nezakhiwo zayo ze-rheological.

1. Izakhiwo eziyisisekelo ze-CMC

I-CMC iyi-anionic cellulose ether eyenziwe ngokungenisa amaqembu e-carboxymethyl kuma-molecule e-cellulose asekelwe ku-cellulose yemvelo ngezindlela zamakhemikhali. Iyimpuphu emhlophe noma ephuzi kancane, encibilika kalula emanzini abandayo, futhi yakha uketshezi olucwebezelayo olubonakalayo. Amapharamitha okusebenza ayinhloko e-CMC afaka phakathi izinga lokushintsha (DS), i-viscosity, ubumsulwa, njll., phakathi kwawo izinga lokushintsha ngokuvamile liphakathi kuka-0.4 no-1.4. Uma izinga lokushintsha liphakeme, kulapho ukuncibilika kwamanzi kwe-CMC kuba ngcono; i-viscosity inquma izakhiwo ze-rheological kanye nezikhathi zokusetshenziswa kwesisombululo sayo.

2. Indima ye-CMC ekumbozeni iphepha

Ukwembozwa kwephepha kubhekisela ekusebenziseni ungqimba lwesembozo esakhiwe ngama-pigment nama-binder ebusweni bephepha ukuze kuthuthukiswe ukusebenza kokuphrinta, ukucwebezela, ukushelela kanye namandla okufihla ephepha. Njengesengezo esisebenzayo kufomula yokumboza, i-CMC inemisebenzi eyinhloko elandelayo:

Isihlanzisi:I-CMC inokusabalala okuhle futhi ingahlakaza ngempumelelo imibala engakhiqizi njenge-kaolin, i-calcium carbonate, i-talcum powder, njll. embozweni ukuvimbela ukugeleza kombala kanye nemvula, ngaleyo ndlela kuthuthukiswe ukuzinza kwengubo.

Isibophezeli:I-CMC ingathuthukisa amandla okubopha phakathi kwezinhlayiya ze-pigment ephepheni naphakathi kwezinhlayiya ze-pigment kanye nemicu yephepha, futhi ithuthukise amandla esakhiwo kanye nokumelana nokuguguleka kwephepheni.

Isiqinisi:Isixazululo samanzi se-CMC sinobuthi obukhulu futhi singalungisa izakhiwo ze-rheological zesembozo, ukuze sibe nokugeleza okuhle, ukusabalala kanye nokumiswa ngesikhathi senqubo yokumboza.

Impahla yokwakha amafilimu:I-CMC ingakha ifilimu efanayo ngemva kokoma ebusweni bephepha, ithuthukise ukushelela nokucwebezela kwesembozo, futhi ithuthukise ukucaca kwesithombe esiphrintiwe.

Ukumelana nokugqwala nothuli:I-CMC ingathuthukisa ukugcotshwa kwengubo, inciphise ukuguguleka kwemishini, ivimbele ukukhiqizwa kothuli, futhi ithuthukise ikhwalithi yendawo yokukhiqiza.

3. Ukusetshenziswa kanye nezinyathelo zokuphepha

Ekusetshenzisweni kokumboza iphepha, kunezindlela ezilandelayo zokusebenzisa i-CMC:

Ukwengeza okuqondile njengengxenye yokumboza: Ncibilikisa i-CMC impuphu eyomile emanzini ukuze ulungiselele ukuhlushwa okuthile kwesisombululo samanzi (ngokuvamile i-1%-5%), bese uyifaka embozweni bese uvuselela ngokulinganayo.

Sebenzisa kanye nezinye izihlanganisi: Ukuze kuthuthukiswe ukusebenza kwesembozo, i-CMC ivame ukusetshenziswa kanye ne-latex (njenge-styrene-butadiene latex, i-ethylene-vinyl acetate emulsion, njll.) ukuze idlale indima yokusebenzisana.

Lungisa ukulawulwa kwe-viscosity: Izinhlobo ezahlukene zephepha kanye nemishini yokumboza inezidingo ezahlukene ze-viscosity yokumboza. Ukusebenza okudingekayo kungafinyelelwa ngokukhetha i-CMC yamazinga ahlukene e-viscosity noma ukulungisa inani lokwengeza.

Izinyathelo zokuphepha zifaka:

Gwema ukuhlangana lapho kuncibilikiswa i-CMC. Amanzi afudumele angasetshenziswa ukwengeza nokuvuselela kancane kancane;

Gwema ukuthintana isikhathi eside nama-asidi aqinile nama-alkali ukuze ugweme ukubola;

Gcina indawo yokugcina yomile ukuze uvimbele ukumuncwa komswakama kanye nokuhlangana.

4. Umphumela wokusetshenziswa kwe-CMC ephepheni elimboziwe

Ngemva kokusebenzisa i-CMC, zonke izinkomba zokusebenza kokumbozwa kwephepha ziyathuthuka kakhulu:

Ukushelela kanye nokukhazimula kobuso kuyathuthuka;

Ukufana kwesembozo kuyathuthukiswa;

Ukucaca kwesithombe sokuphrinta kungcono futhi ukuphrinta kuyathuthuka;

Ukuqina kwephepha, amandla okunamathela kanye nokumelana nokugoqeka kuyathuthuka;

Izinga lokumboza inhlabathi liyancishiswa futhi ukuzinza kwesitoreji kuyathuthuka.

I-CMCiyinto eluhlaza futhi enobungani nemvelo ehlangabezana nezidingo zemboni yanamuhla yokwenza amaphepha ukuze kuthuthukiswe ngendlela esimeme.

5. Umkhuba wentuthuko

Ngokuthuthuka okuqhubekayo kwezidingo zekhwalithi zephepha elinophahla oluphezulu njengephepha elinophahla, amakhadibhodi, iphepha lelebula, njll., ukuguqulwa kokusebenza kanye nokusetshenziswa kahle kwe-CMC sekuyindawo yokucwaninga. Esikhathini esizayo, ngokuhlanganiswa nezinto ezintsha ezisebenzayo njengezinto ezincane kanye nama-biopolymer, kulindeleke ukuthi kuthuthukise kakhulu izinga lokusetshenziswa kwe-CMC emkhakheni wophahla lwephepha.