I-Sodium carboxymethyl cellulose (CMC) iyi-anionic, iketango eliqondile, i-cellulose ether encibilika emanzini, ephuma ku-cellulose yemvelo ne-chloroacetic acid ngokuguqulwa kwamakhemikhali.Isixazululo saso samanzi sinemisebenzi yokuqina, ukwenza ifilimu, ukubopha, ukugcina amanzi, ukuvikelwa kwe-colloidal, i-emulsification kanye nokumiswa, futhi ingasetshenziswa njenge-flocculant, i-chelating agent, i-emulsifier, i-thickener, i-ejenti yokugcina amanzi, i-ejenti yokulinganisa, ifilimu yokwenza ifilimu, njll. ., esetshenziswa kakhulu ekudleni, kwezokwelapha, kwe-electronics, izibulala-zinambuzane, isikhumba, amapulasitiki, ukuphrinta, izitsha zobumba, imboni yamakhemikhali yansuku zonke neminye imikhakha.

I-sodium carboxymethyl cellulose ngokuvamile iyimpuphu eqinile, ngezinye izikhathi i-granular noma i-fibrous, imhlophe noma iphuzi ngokukhanyayo ngombala, ayikho iphunga elikhethekile, iyikhemikhali yama-macromolecular, inokumanzisa okuqinile, ingancibilika emanzini, emanzini ukuze yakhe isixazululo se-viscous esiphezulu. obala.Okungancibiliki ngokujwayelekile ezixazululweni eziphilayo, njenge-ethanol, i-ether, i-chloroform ne-benzene, kodwa ingancibilika emanzini, incibilike ngokuqondile emanzini ihamba kancane, kodwa ukunyibilika kusekukhulu kakhulu, futhi isixazululo samanzi sinokubonakala okuthile.Okuqinile endaweni evamile kuzinzile, ngoba kunokumuncwa kwamanzi athile kanye nomswakama, endaweni eyomile, kungagcinwa isikhathi eside.

① Inqubo yokukhiqiza

1. Indlela ephakathi kwamanzi

Inqubo yamanzi-amalahle iyinqubo yokukhiqiza engaphambi kwesikhathi ekulungiseleleni izimboni ze-sodium carboxymethyl cellulose.Kule nqubo, i-alkali cellulose kanye ne-ejenti etherifying isabela esixazululweni samanzi esiqukethe ama-ion we-oxygen oxide yamahhala, futhi amanzi asetshenziswa njengendlela yokusabela enqubweni yokusabela, ngaphandle kwezincibilikisi eziphilayo.

2. Indlela yokuncibilika

Indlela yokuncibilikisa iyindlela ye-organic solvent, okuyinqubo yokukhiqiza eyenziwe ngesisekelo sendlela ephakathi namanzi ukuze esikhundleni samanzi kufakwe i-organic solvent njengendlela yokusabela.Inqubo ye-alkalization kanye ne-etherification ye-alkali cellulose ne-monochloroacetic acid ku-solvent ephilayo.Ngokusho kwenani le-reaction medium, ingahlukaniswa ngendlela yokuxova kanye nendlela yokubhukuda e-slurry.Inani le-solvent ye-organic esetshenziswa endleleni ye-pulping likhulu kakhulu kunendlela yokuxova, futhi inani le-solvent ye-organic esetshenziswa endleleni yokuxova izilinganiso zesisindo sevolumu yenani le-cellulose, kuyilapho inani le-solvent ephilayo esetshenzisiwe. endleleni ye-pulping isilinganiso sesisindo sevolumu yenani le-cellulose.Uma i-sodium carboxymethyl cellulose ilungiswa ngendlela yokubhukuda yodaka, i-reaction solid isesimweni esiwudaka noma sokumiswa ohlelweni, ngakho indlela yokubhukuda yodaka ibizwa nangokuthi indlela yokumiswa.

3. Indlela ye-slurry

Indlela ye-slurry ubuchwepheshe bakamuva bokukhiqiza i-sodium carboxymethyl cellulose.Indlela ye-slurry ayikwazi ukukhiqiza kuphela ukuhlanzeka okuphezulu kwe-sodium carboxymethyl cellulose, kodwa futhi ikhiqize i-sodium carboxymethyl cellulose ene-high substitution degree kanye nokufaka esikhundleni esifanayo.Inqubo yokukhiqiza yendlela ye-slurry icishe ihambe kanje: i-pulp kakotini egaywe yaba yimpushana ithunyelwa emshinini we-alkalizing oqondile ofakwe i-isopropyl alcohol, kanye nesisombululo se-sodium hydroxide esingeziwe ngenkathi ukuxuba ku-alkali, futhi izinga lokushisa le-alkalizing lingaba ngu-20. ℃.Ngemuva kwe-alkalization, i-material iphonswa emshinini we-etherifying oqondile, futhi isisombululo sotshwala se-isopropyl se-chloroacetic acid siyengezwa, futhi izinga lokushisa le-etherifying lingaba ngu-65 ℃.Ngokusho kokusetshenziswa komkhiqizo othile kanye nezidingo zekhwalithi, ukugxila kwe-alkalization, isikhathi se-alkalization, inani le-ejenti ye-etherifying kanye nesikhathi sokufaka i-etherification neminye imingcele yenqubo ingalungiswa.

② Ububanzi bohlelo lokusebenza

1. I-CMC ayiyona nje kuphela i-emulsifying stabilizer ne-thickener ezinhlelweni zokudla, kodwa futhi inokuqina okuhle kakhulu kokuqandisa nokuncibilika, futhi ingathuthukisa ukunambitheka komkhiqizo futhi yandise isikhathi sokugcina.

2. Kumshini wokuwasha, i-CMC ingasetshenziswa njenge-ejenti yokumisa kabusha i-anti-fouling, ikakhulukazi i-hydrophobic synthetic fiber fabric anti-fouling redeposition effect, engcono kakhulu kune-carboxymethyl fiber.

3. Emgodini kawoyela kungasetshenziswa ukuvikela Imithombo kawoyela njengesizinzisi sodaka, i-ejenti yokugcina amanzi, inani lomthombo kawoyela ngamunye yimithombo engu-2 ~ 3t engashoni, Imithombo ejulile engu-5 ~ 6t.

4. Isetshenziswa embonini yendwangu njenge-ejenti yokulinganisa, ukuphrinta nokudaya ukuqina kwe-slurry, ukuphrinta kwendwangu kanye nokuqeda ukuqina.

5. Isetshenziswa njenge-ejenti ephikisana nokuhlalisa, i-emulsifier, i-disperant, i-ejenti yokulinganisa, i-adhesive, ingenza ingxenye eqinile yopende isatshalaliswe ngokulinganayo ku-solvent, ukuze upende ungahlungiwe isikhathi eside, kodwa futhi usetshenziswe ku-putty. .

6. Njenge-flocculant ekukhishweni kwe-calcium ion kune-sodium gluconate ephumelela kakhulu, njengokushintshaniswa kwe-cation, amandla okushintshana afika ku-1.6ml/g.

7. Embonini yephepha esetshenziswa njenge-ejenti yokulinganisa iphepha, ingathuthukisa kakhulu amandla omile namandla amanzi ephepha namafutha ukumelana, ukumuncwa kukayinki nokumelana namanzi.

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

I-Wholesale Carboxymethyl Cellulose(CMC) Umkhiqizi Nomphakeli |EVERBRIGHT (cnchemist.com)