Carboxymethyl Cellulose (Iselulosi yeSodium Carboxymethyl), ekubhekiselwa kuyo njengeCMC, yikhompawundi yepolymer yecolloid esebenzayo.Ayinavumba, incasa, iphuma kwi-cellulose enyibilikayo emanzini.Isibophelelo se-organic cellulose esifunyenwe luhlobo lwe-cellulose ether, kwaye ityuwa yayo yesodium isetyenziswa ngokubanzi, ke igama layo elipheleleyo kufuneka libe yi-sodium carboxymethyl cellulose, oko kukuthi, i-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 inokusetyenziswa njenge-dispersant kunye ne-stabilizer yodaka oluphikisayo kunye nezinto ezichithwayo, kwaye ikwayi-binder ye-organic high-efficiency yethutyana.Inezi ncedo zilandelayo:
1. I-Carboxymethyl cellulose inokubhengezwa kakuhle kumphezulu weengqungquthela, ingene kakuhle kwaye idibaniswe kwiinqununu, ukwenzela ukuba i-refractory blanks ephezulu inokuveliswa;
2. Ekubeni i-carboxymethyl cellulose i-anionic polymer electrolyte, inokunciphisa ukusebenzisana phakathi kweengqungquthela emva kokubhengezwa kwi-particle surface, kwaye isebenze njenge-dispersant kunye ne-colloid ekhuselayo, ngaloo ndlela iphucula ubuninzi kunye namandla emveliso kunye nokunciphisa i-Inhomogeneity emva kokutshisa. ubume bombutho;
3. Ukusebenzisa i-carboxymethyl cellulose njenge-binder, akukho mlotha emva kokutshisa, kwaye kukho izinto ezimbalwa ezincibilikayo eziphantsi, ezingayi kuchaphazela ukushisa kwenkonzo yemveliso.
Iimpawu zeMveliso
1. I-CMC inomgubo omhlophe okanye otyheli we-fibrous granular, ayinancasa, ayinavumba, ayinatyhefu, inyibilika ngokulula emanzini, kwaye yenza i-colloid viscous ebonakalayo, kwaye isisombululo singathathi hlangothi okanye sinealkaline kancinane.Iyakwazi ukugcinwa ixesha elide ngaphandle kokuwohloka, kwaye izinzile phantsi kobushushu obuphantsi kunye nokukhanya kwelanga.Nangona kunjalo, ngenxa yokutshintsha ngokukhawuleza kweqondo lokushisa, i-acidity kunye ne-alkalinity yesisombululo iya kutshintsha.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 kufuneka sigcinwe ixesha elide, i-preservatives efanelekileyo ingakhethwa, njenge-formaldehyde, i-phenol, i-benzoic acid, kunye ne-organic mercury compounds.
2. CMC iyafana nezinye electrolytes polymer.Xa ichithwa, iya kuqala ihlume, kwaye iinqununu ziya kubambelela omnye komnye ukuze zenze ifilimu okanye iqela le-viscose, ukwenzela ukuba bangakwazi ukuchithwa, kodwa ukuchithwa kucotha.Ngoko ke, xa ulungiselela isisombululo saso samanzi, ukuba iinqununu zinokuthi zifakwe ngokulinganayo kuqala, izinga lokuchithwa linokunyuswa kakhulu.
3. I-CMC ine-hygroscopic.Umyinge wokufuma kwe-CMC kwi-atmosfera uyenyuka ngokunyuka kobushushu bomoya kwaye wehla ngokunyuka kobushushu bomoya.Xa iqondo lokushisa eliphakathi kwegumbi liyi-80% -50%, ukufuma okulinganayo kungaphezulu kwe-26%, kunye nokufuma kwemveliso ngaphantsi kwe-10%.Ke ngoko, ukupakishwa kwemveliso kunye nokugcinwa kufuneka kuthathelwe ingqalelo kubungqina bokufuma.
4. Iityuwa zetsimbi ezinzima ezifana ne-zinc, ubhedu, ilothe, i-aluminiyam, isilivere, isinyithi, i-tin, i-chromium, njl., zingabangela imvula kwisisombululo samanzi se-CMC, kwaye imvula isengaphinda inyibilike kwi-sodium hydroxide okanye isisombululo se-ammonium hydroxide. ngaphandle kwesiseko se-acetate.
5. I-Organic okanye i-acids ye-inorganic nayo iya kubangela imvula kwisisombululo sale mveliso.I-precipitation phenomenon ihluke ngenxa yohlobo kunye nokugxilwa kwe-asidi.Ngokuqhelekileyo, imvula ivela ngaphantsi kwe-pH 2.5, kwaye inokuphinda ihlaziywe emva kokungathathi hlangothi ngokongeza i-alkali.
6. Iityuwa ezifana ne-calcium, i-magnesium kunye netyuwa yetafile ayinayo i-precipitation effect kwisisombululo se-CMC, kodwa ichaphazela ukunciphisa i-viscosity.
7. I-CMC iyahambelana nezinye iiglues ezinyibilikayo zamanzi, izinto ezithambileyo kunye ne-resins.
8. Ifilimu ezotywe yiCMC intywiliselwa kwi-acetone, benzene, butyl acetate, carbon tetrachloride, castor oil, corn oil, ethanol, ether, dichloroethane, petroleum, methanol, methyl acetate, methyl ethyl ether kwiqondo lobushushu begumbi Ketone, toluene, turpentine. , i-xylene, i-peanut oil, njl njl. ayinakutshintsha kwiiyure ezingama-24
Ixesha lokuposa: Jan-03-2023