I-Carboxymethyl Cellulose (I-Sodium Carboxymethyl Cellulose), ebizwa ngokuthi i-CMC, iyinhlanganisela ye-polymer ye-surface colloid esebenzayo. Iwukuphuma kwe-cellulose encibilika emanzini engenaphunga, enganambitheki. I-organic cellulose binder etholakele iwuhlobo lwe-cellulose ether, futhi usawoti wayo we-sodium uvame ukusetshenziswa, ngakho igama lawo eligcwele kufanele kube i-sodium carboxymethyl cellulose, okungukuthi, i-CMC-Na.
Njenge-methyl cellulose, i-carboxymethyl cellulose ingasetshenziswa njengesisetshenziswa sezinto eziphikisayo nanjengesibopho sesikhashana sezinto eziphikisayo.
I-sodium carboxymethyl cellulose iyi-polyelectrolyte yokwenziwa, ngakho-ke ingasetshenziswa njenge-dispersant kanye ne-stabilizer odakeni oluphikisayo kanye nezinto eziphonswayo, futhi iphinde ibe isibophezelo se-organic esisebenza kahle kakhulu sesikhashana. Inezinzuzo ezilandelayo:
1. I-Carboxymethyl cellulose ingakhangiswa kahle ebusweni bezinhlayiya, ingene kahle futhi ixhunywe ezinhlayiyeni, ukuze kukhiqizwe izikhala eziphikisayo ezinamandla aphezulu;
2. Njengoba i-carboxymethyl cellulose iyi-anionic polymer electrolyte, inganciphisa ukusebenzisana phakathi kwezinhlayiya ngemva kokukhangiswa endaweni yezinhlayiya, futhi isebenze njenge-dispertant ne-colloid evikelayo, ngaleyo ndlela ithuthukise ukuminyana namandla omkhiqizo futhi yehlise ukushiswa kwe-Inhomogeneity isakhiwo senhlangano;
3. Ukusebenzisa i-carboxymethyl cellulose njenge-binder, awukho umlotha ngemva kokushiswa, futhi kunezinto ezimbalwa ezincibilikayo eziphansi, ezingeke zithinte izinga lokushisa lesevisi yomkhiqizo.
Izici Zomkhiqizo
1. I-CMC iyimpushana emhlophe noma ephuzi eyi-fibrous granular, ayinambitheki, ayinaphunga, ayinabuthi, incibilika kalula emanzini, futhi yakha i-viscous colloid esobala, futhi isixazululo asithathi hlangothi noma sine-alkaline kancane. Ingagcinwa isikhathi eside ngaphandle kokuwohloka, futhi futhi izinzile ngaphansi kwezinga lokushisa eliphansi nokukhanya kwelanga. Kodwa-ke, ngenxa yokushintsha okusheshayo kwezinga lokushisa, i-asidi kanye ne-alkalinity yesisombululo izoshintsha. Ngaphansi kwethonya lemisebe ye-ultraviolet nama-microorganisms, kuzophinde kubangele i-hydrolysis noma i-oxidation, i-viscosity yesisombululo izokwehla, futhi ngisho nesisombululo sizokonakala. Uma ikhambi lidinga ukugcinwa isikhathi eside, izivimbelakuvunda ezifanele zingakhethwa, njenge-formaldehyde, i-phenol, i-benzoic acid, nezinhlanganisela ze-organic mercury.
2. I-CMC iyafana namanye ama-electrolyte e-polymer. Uma ihlakazeka, izoqala ukuvuvukala, futhi izinhlayiya zizonamathela komunye nomunye ukuze zenze ifilimu noma iqembu le-viscose, ukuze zingakwazi ukuhlakazeka, kodwa ukuchithwa kuhamba kancane. Ngakho-ke, lapho ulungiselela isisombululo saso samanzi, uma izinhlayiya zingamanziswa ngokufanayo kuqala, izinga lokuqedwa lingakhuphuka kakhulu.
3. I-CMC iyi-hygroscopic. Umswakama ojwayelekile we-CMC emkhathini ukhuphuka ngokukhuphuka kwezinga lokushisa lomoya futhi wehla ngokunyuka kwezinga lokushisa lomoya. Uma izinga lokushisa elijwayelekile legumbi lingama-80%–50%, umswakama wokulingana ungaphezu kuka-26%, kanti umswakama womkhiqizo ungaphansi kuka-10%. Ngakho-ke, ukupakishwa nokugcinwa komkhiqizo kufanele kunake umswakama-ubufakazi.
4. Usawoti wensimbi esindayo njenge-zinc, ithusi, umthofu, i-aluminium, isiliva, insimbi, ithini, i-chromium, njll., angabangela imvula kusixazululo samanzi se-CMC, futhi imvula isengaphinde incibilike kusixazululo se-sodium hydroxide noma i-ammonium hydroxide. ngaphandle kwe-acetate eyisisekelo eholayo.
5. Ama-asidi aphilayo noma angaphili nawo azodala imvula esixazululweni salo mkhiqizo. Isimo semvula sihlukile ngenxa yohlobo nokugxila kwe-asidi. Ngokuvamile, imvula iba ngaphansi kwe-pH 2.5, futhi ingatholwa ngemva kokungathathi hlangothi ngokwengeza i-alkali.
6. Usawoti onjenge-calcium, i-magnesium nosawoti wetafula awunawo umthelela wezulu esixazululweni se-CMC, kodwa uthinta ukuncishiswa kwe-viscosity.
7. I-CMC iyahambisana namanye ama-glues ancibilikayo emanzini, izithambisa kanye nama-resin.
8. Ifilimu edwetshwe yi-CMC icwiliswe ku-acetone, benzene, butyl acetate, carbon tetrachloride, castor oil, corn oil, ethanol, ether, dichloroethane, petroleum, methanol, methyl acetate, methyl ethyl ether at the room lokushisa Ketone, toluene, turpentine , i-xylene, amafutha e-peanut, njll. kungenzeka kungashintshi phakathi namahora angu-24
Isikhathi sokuthumela: Jan-03-2023