I-sodium carboxymethyl cellulose (CMC) yi-anionic, ikhonkco elithe tye, i-cellulose ether enyibilikayo emanzini, i-derivative ye-cellulose yendalo kunye ne-chloroacetic acid ngokuguqulwa kweekhemikhali.Isisombululo sayo samanzi sinemisebenzi yokuqina, ukwenza ifilimu, ukudibanisa, ukugcinwa kwamanzi, ukukhuselwa kwe-colloidal, i-emulsification kunye nokunqunyanyiswa, kwaye ingasetyenziselwa njenge-flocculant, i-agent ye-chelating, i-emulsifier, i-thickener, i-ejenti yokugcina amanzi, i-agent yokulinganisa, ifilimu yokwenza ifilimu, njl. ., esetyenziswa kakhulu kukutya, amayeza, i-elektroniki, izibulali-zinambuzane, ufele, iiplastiki, ushicilelo, iiseramikhi, ishishini lemichiza yemihla ngemihla kunye namanye amacandelo.

I-sodium carboxymethyl cellulose idla ngokuba ngumgubo oqinileyo, ngamanye amaxesha i-granular okanye i-fibrous, emhlophe okanye etyheli ekhanyayo ngombala, akukho vumba likhethekileyo, yinto yekhemikhali ye-macromolecular, inobumanzi obunamandla, inokunyibilika emanzini, emanzini ukwenza isisombululo se-viscous esiphakamileyo. ukungafihli.I-Insoluble kwi-organic solutions jikelele, njenge-ethanol, i-ether, i-chloroform kunye ne-benzene, kodwa inokunyibilika emanzini, inyibilika ngokuthe ngqo emanzini icotha noko, kodwa ukunyibilika kusekukhulu kakhulu, kwaye isisombululo samanzi sine-viscosity ethile.I-Solid kwindawo eqhelekileyo izinzile ngakumbi, kuba ine-absorption ethile yamanzi kunye nomswakama, kwindawo eyomileyo, inokugcinwa ixesha elide.

① Inkqubo yemveliso

1. Indlela ephakathi kwamanzi

Inkqubo yamanzi-amalahle yinkqubo yokuvelisa kwangethuba ekulungiseleleni ishishini le-sodium carboxymethyl cellulose.Kule nkqubo, i-alkali cellulose kunye ne-etherifying agent isabela kwisisombululo esinamanzi esine-oxygen oxide ions yamahhala, kwaye amanzi asetyenziswa njengendlela yokusabela kwinkqubo yokuphendula, ngaphandle kwe-solvents eziphilayo.

2. Indlela yokunyibilikisa

Indlela yokunyibilikisa yindlela yokunyibilikisa ephilayo, eyinkqubo yemveliso ephuhliswe ngokwesiseko sendlela ephakathi kwamanzi ukubuyisela amanzi kwisinyibilikisi se-organic njengendlela yokusabela.Inkqubo ye-alkalization kunye ne-etherification ye-alkali cellulose kunye ne-monochloroacetic acid kwi-solvent ephilayo.Ngokobungakanani bendlela yokusabela, inokwahlulwa ibe yindlela yokuxova kunye nendlela yokuqubha oludaka.Ubungakanani be-solvent ye-organic esetyenziswe kwindlela yokukhupha i-pulping inkulu kakhulu kunendlela yokuxova, kwaye inani le-solvent ye-organic esetyenziswe kwindlela yokuxova ngumlinganiselo wobunzima bomthamo wexabiso le-cellulose, ngelixa inani le-solvent ye-organic esetyenzisiweyo. kwindlela ye-pulping ngumlinganiselo wobunzima bomthamo wexabiso le-cellulose.Xa i-sodium carboxymethyl cellulose ilungiswa ngokuqubha i-slurry method, i-reaction solid ikwi-slurry okanye i-suspension state kwisistim, ngoko ke indlela yokudada yodaka ikwabizwa ngokuba yindlela yokumiswa.

3. Indlela eludaka

Indlela ye-Slurry yitekhnoloji yamva nje yokuvelisa i-sodium carboxymethyl cellulose.Indlela ye-slurry ayinakuvelisa kuphela ubunyulu obuphezulu be-sodium carboxymethyl cellulose, kodwa iphinda ivelise i-sodium carboxymethyl cellulose eneqondo eliphezulu lokutshintsha kunye nokutshintshwa okufanayo.Inkqubo yokuvelisa indlela ye-slurry ifana ngolu hlobo lulandelayo: i-pulp yekotoni egayiweyo ibe ngumgubo ithunyelwa kumatshini we-alkalizing othe nkqo oxhotyiswe nge-isopropyl alcohol, kunye nesisombululo se-sodium hydroxide xa ukuxuba ku-alkali, kunye nobushushu be-alkalizing malunga ne-20. ℃.Emva kwe-alkalization, i-material impontshelwa kumatshini wokulinganisa othe nkqo, kwaye isisombululo sotywala se-isopropyl se-chloroacetic acid siyongezwa, kwaye ubushushu be-etherifying bumalunga ne-65 ℃.Ngokutsho kokusetyenziswa kwemveliso ethile kunye neemfuno zomgangatho, ukugxininiswa kwe-alkalization, ixesha le-alkalization, inani le-agent etherifying kunye nexesha le-etherification kunye nezinye iiparameters zenkqubo zingalungiswa.

② Umda wosetyenziso

1. I-CMC ayisiyiyo kuphela i-emulsifying stabilizer kunye ne-thickener kwizicelo zokutya, kodwa inozinzo oluhle kakhulu lokukhenkceza kunye nokunyibilika, kwaye inokuphucula incasa yemveliso kunye nokwandisa ixesha lokugcina.

2. Kwi-detergent, i-CMC ingasetyenziswa njenge-anti-fouling redeposition agent, ngokukodwa kwi-hydrophobic synthetic fiber fabric anti-fouling redeposition effect, ingcono kakhulu kune-carboxymethyl fiber.

3. Kwi-oyile yokomba ingasetyenziselwa ukukhusela i-oyile Wells njenge-stabilizer yodaka, i-ejenti yokugcina amanzi, ubungakanani bequla le-oyile nganye yi-2 ~ 3t i-Well Wells, i-Well Wells 5 ~ 6t.

4. Isetyenziswa kushishino olulukiweyo njenge-ejenti yokulinganisa, ukuprinta kunye nokudaya i-slurry thickener, ukuprintwa kwelaphu kunye nokuqiniswa kokugqiba.

5. Isetyenziswe njenge-agent anti-setting agent, i-emulsifier, i-dispersant, i-agent yokulinganisa, i-adhesive, inokwenza inxalenye eqinileyo yepeyinti isasazwe ngokulinganayo kwi-solvent, ukwenzela ukuba ipeyinti ingabonakali ixesha elide, kodwa isetyenziswe kwi-putty. .

6. Njenge-flocculant ekususweni kwe-calcium ions kune-sodium gluconate esebenzayo ngakumbi, njengotshintshiselwano lwe-cation, umthamo wokutshintshiselana ukuya kwi-1.6ml / g.

7. Kwishishini lephepha elisetyenziswa njenge-agent yokulinganisa iphepha, linokuphucula kakhulu amandla omileyo kunye namandla amanzi ephepha kunye nokumelana neoli, ukufunxa i-inki kunye nokuxhathisa amanzi.

8. Njenge-hydrosol kwi-cosmetics, esetyenziswe njenge-ejenti yokuqina kwi-toothpaste, i-dosage yayo malunga ne-5%.

Ihowuliseleli iCarboxymethyl Cellulose(CMC) Umvelisi kunye noMboneleli |EVERBRIGHT (cnchemist.com)