ICarboxymethyl cellulose (iSodium Carboxymethyl Cellulose) ekubhekiselwa kuyo njengeCMC, luhlobo lwepolymer esebenzayo engaphezulu, luhlobo olungenavumba, olungenancasa, olungenatyhefu lweselulosi enyibilikayo emanzini, lwenziwe ngomqhaphu ofunxayo ngonyango lwekhemikhali. Isibophelelo se-organic cellulose esifunyenweyo luhlobo lwe-ether yeselulosi, kwaye ityuwa yesodium isetyenziswa ngokubanzi, ngoko ke igama layo elipheleleyo kufuneka libizwe ngokuba yi-sodium carboxymethyl cellulose, eyile CMC-Na.
Njenge-methyl cellulose, i-carboxymethyl cellulose inokusetyenziswa njenge-surfactant yezixhobo eziphikisayo kunye nesibophelelo sexeshana sezinto eziphikisayo.
I-sodium carboxymethyl cellulose yi-polyelectrolyte yokwenziwa, ngoko ke inokusetyenziswa njenge-dispersant kunye ne-stabilizer kwi-slurries e-refractory kunye ne-castables, kwaye iphinde ibe yi-binder ye-organic high-efficiency yethutyana. Inezi ncedo zilandelayo:
1. I-Carboxymethyl cellulose inokubhengezwa kakuhle kumphezulu weengqungquthela, ingena ngaphakathi kwaye idibanise iinqununu kakuhle, ukwenzela ukuba kufumaneke umzimba ophezulu ochasayo;
2. Ekubeni i-carboxymethyl cellulose i-anionic polymer electrolyte, inokunciphisa ukusebenzisana phakathi kweengqungquthela emva kokubhengezwa kumphezulu weengqungquthela, kwaye idlale indima ye-dispersant kunye ne-colloid ekhuselayo, ngaloo ndlela iphucula ubuninzi kunye namandla emveliso kunye nokunciphisa. emva kokutshisa. Ukungafani kolwakhiwo lombutho;
3. Ukusebenzisa i-carboxymethyl cellulose njenge-binder, akukho mlotha emva kokutshisa, kwaye kukho izinto ezimbalwa ezincibilikayo ezincibilikayo, ezingachaphazeli ukushisa kokusetyenziswa kwemveliso.
Iimpawu zeMveliso
1. I-CMC yimpuphu emhlophe okanye etyheli kancinane ye-fibrous granular, ayinancasa, ayinavumba, ayinatyhefu, inyibilika ngokulula emanzini, kwaye yenza i-colloid ebonakalayo ebonakalayo, isisombululo asithathi hlangothi okanye sinealkaline kancinane. Iyakwazi ukugcinwa ixesha elide ngaphandle kokuwohloka, kwaye izinzile phantsi kobushushu obuphantsi kunye nokukhanya kwelanga. Nangona kunjalo, ngenxa yokutshintsha kweqondo lokushisa ngokukhawuleza, i-acidity kunye ne-alkalinity yesisombululo iyatshintsha. Ngaphantsi kweempembelelo zemitha ye-ultraviolet kunye ne-microorganisms, iya kubangela i-hydrolysis okanye i-oxidation, i-viscosity yesisombululo iya kuncipha, kwaye isisombululo siya konakala. Ukuba isisombululo sifuna ukugcinwa ixesha elide, izilondolozo ezifanelekileyo ezifana ne-formaldehyde, i-phenol, i-benzoic acid, i-organic mercury compounds, njl.
2. CMC iyafana nezinye electrolytes polymer. Xa incibilika, iqala ivelise into yokuvuvukala, kwaye iinqununu zihambelana nomnye ukuze zenze ifilimu okanye i-viscose, eyenza kube nzima ukusabalalisa, kodwa iyancipha ngokukhawuleza. Ngoko ke, xa ulungiselela isisombululo saso samanzi, ukuba iinqununu zinokuthi zifakwe ngokulinganayo kuqala, izinga lokuchithwa linokunyuswa kakhulu.
3. I-CMC ine-hygroscopic. Kwi-atmosfera, i-avareji yesiqulatho samanzi se-CMC sinyuka ngokunyuka kobushushu bomoya kwaye siyancipha ngokunyuka kobushushu bomoya. Xa iqondo lokushisa eliphakathi kwegumbi liyi-80% -50%, umthamo wamanzi olinganayo ungaphezulu kwe-26%, kunye nemveliso yamanzi i-10% okanye ngaphantsi. Ke ngoko, ukupakishwa kwemveliso kunye nokugcinwa kufuneka kuthathelwe ingqalelo kubungqina bokufuma.
4. I-Zinc, ubhedu, ilothe, i-aluminium, isilivere, isinyithi, i-tin, i-chromium kunye nezinye iityuwa zetsimbi ezinzima zinokukhupha isisombululo se-CMC esimanzi. Ngaphandle kwe-acetate yetyuwa esekelwe kwityuwa, i-precipitate isenokuchithwa kwakhona kwi-sodium hydroxide okanye isisombululo se-ammonium hydroxide. .
5. I-Organic okanye i-acids ye-inorganic nayo iya kubangela imvula kwisisombululo sale mveliso. Imeko yemvula iyahluka ngohlobo kunye noxinzelelo lwe-asidi. Ngokuqhelekileyo, imvula iyenzeka xa i-pH ingaphantsi kwe-2.5, kwaye inokubuyiselwa emva kokungathathi hlangothi ngealkali.
6. Kwiityuwa ezifana ne-calcium, i-magnesium kunye netyuwa yetafile, ayinayo impembelelo yemvula kwisisombululo se-CMC, kodwa ichaphazela ukunciphisa i-viscosity.
7. I-CMC iyahambelana nezinye iiglues ezinyibilikayo zamanzi, izinto ezithambileyo kunye ne-resins.
8. Iifilimu ezithathwe kwi-CMC, zintywiliselwe kwi-acetone, benzene, butyl acetate, carbon tetrachloride, castor oil, corn oil, ethanol, ether, dichloroethane, petroleum, methanol, methyl acetate, methyl ethyl acetate kubushushu begumbi Ketone, toluene, turpentine, i-xylene, i-peanut oil, njl
Ixesha lokuposa: Nov-07-2022