Inqubo yokukhiqiza kanye nobubanzi bokusetshenziswa kwe-sodium carboxymethyl cellulose (CMC)

I-Sodium carboxymethyl cellulose (CMC) iyi-anionic, i-straight chain, i-water-soluble cellulose ether, etholakala ku-cellulose yemvelo kanye ne-chloroacetic acid ngokuguqulwa kwamakhemikhali. Isixazululo sayo samanzi sinemisebenzi yokuqina, ukwakha ifilimu, ukubopha, ukugcinwa kwamanzi, ukuvikelwa kwe-colloidal, i-emulsification kanye nokumiswa, futhi ingasetshenziswa njenge-flocculant, i-chelating agent, i-emulsifier, i-thickener, i-water retaining agent, i-size agent, izinto zokwakha ifilimu, njll., esetshenziswa kabanzi ekudleni, emithini, kuma-electronics, kuma-pesticides, esikhumbeni, kumapulasitiki, ekunyatheliseni, kuma-ceramics, embonini yamakhemikhali yansuku zonke nakwamanye amasimu.

I-sodium carboxymethyl cellulose ngokuvamile iyi-powdery solid, ngezinye izikhathi i-granular noma i-fibrous, inombala omhlophe noma ophuzi okhanyayo, ayinaphunga elikhethekile, iyikhemikhali ye-macromolecule, inomswakama onamandla, ingancibilika emanzini, emanzini ukuze yakhe isixazululo esiqinile esinokukhanya okuphezulu. Ayincibiliki ezixazululweni ezijwayelekile zezinto eziphilayo, njenge-ethanol, i-ether, i-chloroform ne-benzene, kodwa ingancibilika emanzini, incibilikiswe ngqo emanzini ihamba kancane, kodwa ukuncibilika kusekukhulu kakhulu, futhi isixazululo samanzi sinobuthi obuthile. Okuqinile endaweni evamile kuzinzile kakhulu, ngoba kunokumuncwa kwamanzi kanye nomswakama othile, endaweni eyomile, kungagcinwa isikhathi eside.

① Inqubo yokukhiqiza

1. Indlela yokusebenzisa amanzi

Inqubo yamalahle amanzi iyinqubo yokukhiqiza eyenzeka ekuqaleni kokulungiswa kwezimboni kwe-sodium carboxymethyl cellulose. Kule nqubo, i-alkali cellulose kanye ne-etherifying agent zisabela esixazululweni samanzi esiqukethe ama-ion e-oxygen oxide yamahhala, futhi amanzi asetshenziswa njengendawo yokusabela enkambisweni yokusabela, ngaphandle kwezinyibilikisi eziphilayo.

2. Indlela yokunyibilikisa

Indlela yokunyibilikisa iyindlela yokunyibilikisa ephilayo, okuyinqubo yokukhiqiza ethuthukiswe ngokusekelwe endleleni ephakathi kwamanzi ukuze kufakwe amanzi esikhundleni se-solvent ephilayo njengendlela yokusabela. Inqubo yokwenza i-alkaliization kanye ne-etherification ye-alkali cellulose kanye ne-monochloroacetic acid ku-solvent ephilayo. Ngokwenani le-reaction medium, ingahlukaniswa ngendlela yokuxova kanye nendlela yokubhukuda. Inani le-solvent ephilayo esetshenziswa endleleni yokudonsa likhulu kakhulu kunelendlela yokuxova, kanti inani le-solvent ephilayo esetshenziswa endleleni yokudonsa liyisilinganiso sesisindo sevolumu senani le-cellulose, kanti inani le-solvent ephilayo esetshenziswa endleleni yokudonsa liyisilinganiso sesisindo sevolumu senani le-cellulose. Lapho i-sodium carboxymethyl cellulose ilungiswa ngendlela yokubhukuda, i-reaction solid isesimweni se-slurry noma sokumiswa ohlelweni, ngakho-ke indlela yokubhukuda i-slurry ibizwa nangokuthi indlela yokumiswa.

3. Indlela yodaka

Indlela ye-slurry ubuchwepheshe bamuva bokukhiqiza i-sodium carboxymethyl cellulose. Indlela ye-slurry ayikwazi nje ukukhiqiza i-sodium carboxymethyl cellulose emsulwa kakhulu, kodwa futhi ikhiqiza i-sodium carboxymethyl cellulose enezinga eliphezulu lokufaka esikhundleni kanye nokufaka esikhundleni okufanayo. Inqubo yokukhiqiza indlela ye-slurry icishe ibe kanje: i-pulp yekotini egayiwe yaba yimpuphu ithunyelwa emshinini we-alkalizing oqondile ohlonyiswe nge-isopropyl alcohol, kanti isixazululo se-sodium hydroxide esengeziwe ngenkathi kuxutshwa siyafakwa ku-alkalizing, kanti izinga lokushisa le-alkalizing lingaba ngu-20℃. Ngemva kwe-alkalizing, izinto zipontshwa ziye emshinini we-etherifying oqondile, bese kufakwa isixazululo se-isopropyl alcohol se-chloroacetic acid, bese kufakwa izinga lokushisa le-etherifying lingaba ngu-65℃. Ngokusho kokusetshenziswa komkhiqizo kanye nezidingo zekhwalithi ethile, ukuhlushwa kwe-alkalizing, isikhathi se-alkalizing, inani le-etherifying agent kanye nesikhathi se-etherification kanye neminye imingcele yenqubo kungalungiswa.

② Ububanzi bokusetshenziswa

1. I-CMC ayigcini nje ngokuba yi-emulsifying stabilizer kanye ne-thickener enhle ekusetshenzisweni kokudla, kodwa futhi inokuqina okuhle kakhulu kokuqandisa nokuncibilikisa, futhi ingathuthukisa ukunambitheka komkhiqizo futhi yandise isikhathi sokugcina.

2. Ku-detergent, i-CMC ingasetshenziswa njenge-ejenti yokuvuselela kabusha i-anti-fouling, ikakhulukazi ngomphumela we-hydrophobic synthetic fiber fabric anti-fouling redeposition, ongcono kakhulu kune-carboxymethyl fiber.

3. Ekubholeni uwoyela kungasetshenziswa ukuvikela iMithombo kawoyela njengesiqinisi sodaka, into yokugcina amanzi, inani lomthombo ngamunye kawoyela lingu-2 ~ 3t Imithombo engajulile, iMithombo ejulile ingu-5 ~ 6t.

4. Isetshenziswa embonini yezindwangu njenge-ejenti yokulinganisa, isithambisi sokunyathelisa nokudaya i-slurry, ukunyathelisa izindwangu kanye nokuqeda ukuqina.

5. Isetshenziswa njenge-ejenti yokulwa nokuxazulula inkinga, i-emulsifier, i-dispersant, i-ejenti yokulinganisa, i-glue, ingenza ingxenye eqinile yopende isatshalaliswe ngokulinganayo ku-solvent, ukuze upende ungahlukaniswa isikhathi eside, kodwa futhi usetshenziswe ku-putty.

6. Njenge-flocculant ekususweni kwama-ion e-calcium kune-sodium gluconate esebenza kahle kakhulu, njenge-cation exchange, amandla okushintshana afinyelela ku-1.6ml/g.

7. Embonini yephepha esetshenziswa njenge-ejenti yokulinganisa amaphepha, ingathuthukisa kakhulu amandla okomile kanye namandla okumanzi okumelana namaphepha namafutha, ukumuncwa kweyinki kanye nokumelana namanzi.

8. Njenge-hydrosol ezimonyweni, esetshenziswa njenge-ejenti yokujiya ku-toothpaste, umthamo wayo ungama-5%.

Umkhiqizi Nomhlinzeki We-Carboxymethyl Cellulose (CMC) Othengiswayo | EVERBRIGHT (cnchemist.com)