Yintoni iSodium carboxymethylcellulose?

I-sodium carboxymethylcellulose(CMC) yi-anionic cellulose ether. Inkangeleko yayo imhlophe okanye ityheli kancinci njenge-flocculent fiber powder okanye i-white powder, ayinavumba, ayinancasa, kwaye ayinatyhefu; inyibilika lula emanzini abandayo okanye ashushu kwaye yenza isisombululo esicacileyo se-viscosity. Isisombululo asithathi cala okanye sine-alkaline kancinci, asinyibiliki kwi-ethanol, i-ether, i-isopropanol, i-acetone kunye nezinye izinyibilikisi ze-organic, kodwa sinyibilika kwi-60% ye-ethanol okanye i-acetone solution. Si-hygroscopic kwaye sizinzile ekukhanyeni nasekufudumaleni. I-viscosity iyancipha ngokunyuka kobushushu. Isisombululo sizinzile kwi-pH 2-10. Xa i-pH ingaphantsi kwe-2, izinto eziqinileyo ziyaqina. Xa i-pH ingaphezulu kwe-10, i-viscosity iyancipha. Ubushushu bokutshintsha kombala yi-227°C, ubushushu be-carbonization yi-252°C, kwaye uxinzelelo lomphezulu lwesisombululo samanzi se-2% yi-71mn/n.

iipropati zeekhemikhali

Ifunyanwa ngokunyanga i-cellulose ngezinto ezithatha indawo ye-carboxymethyl, ukunyanga i-cellulose nge-sodium hydroxide ukwenza i-alkali cellulose, ize emva koko iphendule nge-monochloroacetic acid. Iyunithi yeglucose eyakha i-cellulose inamaqela amathathu e-hydroxyl anokutshintshwa, ngoko ke iimveliso ezinamaqondo ahlukeneyo okutshintshwa zinokufunyanwa. Ngokomyinge, i-1mmol yeqela le-carboxymethyl kwi-1g yobunzima obomileyo ayinyibiliki emanzini kwaye inyibilikise i-asidi, kodwa inokudumba kwaye isetyenziswe kwi-ion exchange chromatography. I-Carboxymethyl pKa imalunga ne-4 emanzini acocekileyo kwaye imalunga ne-3.5 kwi-0.5mol/L NaCl. Yi-cation exchanger ebuthathaka kwaye idla ngokusetyenziselwa ukwahlula iiproteni ezingathathi cala nezisisiseko kwi-pH>4. Ngaphezulu kwe-40% yamaqela e-hydroxyl atshintshwa ngamaqela e-carboxymethyl, anokunyibilikiswa emanzini ukwenza isisombululo se-colloidal esizinzileyo esine-viscosity ephezulu.

Injongo ephambili

I-Carboxymethylcellulose (CMC) yipowder emhlophe engenabungozi, engenavumba kwaye inyibilika lula emanzini. Isisombululo sayo samanzi lulwelo olucacileyo noluthambileyo olungenabuthi okanye olune-alkaline, olunyibilikayo kwezinye iiglu kunye neeresini ezinyibilikayo emanzini, kwaye alunyibiliki kwizinyibilikisi zendalo ezifana ne-ethanol. I-CMC ingasetyenziswa njenge-binder, i-thickener, i-suspending agent, i-emulsifier, i-dispersant, i-stabilizer, i-size agent, njl.njl.

I-Sodium carboxymethyl cellulose (CMC) yimveliso enemveliso enkulu, uluhlu olubanzi lokusetyenziswa kunye nokusetyenziswa okulula phakathi kwee-ethers ze-cellulose, ezaziwa ngokuba yi-"industrial monosodium glutamate".

1. Isetyenziswa ekugrumbeni ioyile negesi yendalo, ekumbeni imithombo yamanzi nakwezinye iiprojekthi

① Udaka olune-CMC lunokwenza udonga lomthombo lube yikeyiki yesihluzo esincinci nesiqinileyo esingenamanzi amaninzi, nto leyo enciphisa ukulahleka kwamanzi.

② Emva kokongeza i-CMC eludakeni, isixhobo sokugrumba sinokufumana amandla amancinci okucheba, ukuze udaka lukwazi ukukhulula igesi egqunywe kuyo ngokulula, kwaye kwangaxeshanye, inkunkuma ingalahlwa ngokukhawuleza emngxunyeni wodaka.

③ Udaka lokugrumba, njengezinye izinto ezixutyiweyo kunye nezinto ezisasazwayo, lunobomi obuthile bokugrumba. Ukongeza i-CMC kunokuyenza izinze kwaye kwandise ubomi bayo bokugrumba.

④ Udaka olune-CMC aluchaphazeleki kakhulu ngumngundo, ngoko ke akufuneki ukuba ugcine ixabiso le-pH liphezulu kwaye usebenzise izithinteli.

⑤ Iqulethe i-CMC njengesixhobo sonyango lokugrumba ulwelo lokucoca udaka, olunokumelana nongcoliseko lweetyuwa ezahlukeneyo ezinyibilikayo.

⑥ Udaka olune-CMC luzinzile kwaye lunokunciphisa ukulahleka kwamanzi nokuba amaqondo obushushu angaphezulu kwe-150°C.

I-CMC enobuthi obuphezulu kunye nenqanaba eliphezulu lokutshintshwa ifanelekile kudaka olunobuthi obuphantsi, kwaye i-CMC enobuthi obuphantsi kunye nenqanaba eliphezulu lokutshintshwa ifanelekile kudaka olunobuthi obuphezulu. Ukukhetha i-CMC kufuneka kumiselwe ngokweemeko ezahlukeneyo ezifana nohlobo lodaka, ummandla, kunye nobunzulu bomthombo.

2. Isetyenziswa kwimizi-mveliso yelaphu, ukushicilela kunye nokudaya. Kwimizi-mveliso yelaphu, i-CMC isetyenziswa njengearhente yokulinganisa ubungakanani bemisonto ekhaphukhaphu yomqhaphu, uboya besilika, ifayibha yamakhemikhali, izinto ezixutyiweyo kunye nezinye izinto eziqinileyo;

3. Isetyenziswa kwishishini lephepha. I-CMC ingasetyenziswa njengearhente yokuthambisa iphepha kunye nearhente yokulinganisa ubungakanani kwishishini lephepha. Ukongeza i-0.1% ukuya kwi-0.3% ye-CMC kwi-pulp kunokunyusa amandla okuxinana kwephepha ngama-40% ukuya kuma-50%, kwandise ukumelana nokuqhekeka ngama-50%, kwaye kwandise ipropati yokuxova ngama-4 ukuya kuma-5 amaxesha.

4. I-CMC ingasetyenziswa njengesithambisi sokungcola xa ifakwa kwiisepha zokwenziwa; iikhemikhali zemihla ngemihla ezifana noshishino lwamazinyo Isisombululo samanzi se-CMC glycerol sisetyenziswa njengesiseko seentsini zamazinyo; ishishini lamayeza lisetyenziswa njengesithambisi kunye nesithambisi; Isisombululo samanzi se-CMC sisetyenziswa njengesithambisi emva kokutyeba Ukwemba njalo njalo.

5. Ingasetyenziswa njenge-glue, i-plasticizer, i-agent yokumisa i-glaze, i-agent yokulungisa imibala, njl.njl. kwishishini le-ceramic.

6. Isetyenziswa ekwakheni ukuphucula ukugcinwa kwamanzi kunye namandla awo

7. Isetyenziswa kwishishini lokutya. Ishishini lokutya lisebenzisa i-CMC enomlinganiselo ophezulu wokutshintsha njengento yokutyebisa i-ayisikhrim, ukutya okusemathinini, ii-noodles ezikhawulezayo, kunye ne-foam stabilizer yebhiya. Kwizinto zokutyebisa, izibopheleli okanye ii-agents ezihambelanayo.

8. Ishishini lamayeza likhetha i-CMC ene-viscosity efanelekileyo njenge-binder, i-arhente yokuqhekeka kweepilisi, kunye ne-arhente yokuxhoma ii-suspension, njl.njl.