Carboxymethyl celluloseSodium Carboxymethyl Cellulose), nke a na-akpọ CMC, bụ ngwakọta polymer nke colloid na-arụ ọrụ n'elu. Ọ bụ ihe na-esi ísì ụtọ, nke na-adịghị atọ ụtọ, nke na-adịghị egbu egbu na mmiri na-agbaze cellulose. Ihe na-ekekọta cellulose organic enwetara bụ ụdị cellulose ether, a na-ejikarị nnu sodium ya eme ihe, ya mere aha ya zuru oke kwesịrị ịbụ sodium carboxymethyl cellulose, ya bụ, CMC-Na.
Dị ka methyl cellulose, carboxymethyl cellulose nwere ike iji dị ka a surfactant maka refractory ihe na dị ka nwa oge na-ekekọta maka refractory ihe.
Sodium carboxymethyl cellulose bụ ihe sịntetik polyelectrolyte, n'ihi ya, a pụrụ iji ya dị ka dispersant na stabilizer maka refractory apịtị na castables, na ọ bụkwa nwa oge elu-arụmọrụ organic ihe nchikota. Nwere uru ndị a:
1. Carboxymethyl cellulose nwere ike ịkwado nke ọma n'elu ihe ndị ahụ, na-abanye nke ọma ma jikọta ya na ihe ndị ahụ, nke mere na enwere ike ịmepụta oghere ndị na-eme ka ike dị elu;
2. Ebe ọ bụ na carboxymethyl cellulose bụ anionic polymer electrolyte, ọ nwere ike ibelata mmekọrịta n'etiti ahụ mgbe adsorbed na urughuru elu, na-eme ihe dị ka a dispersant na-echebe colloid, si otú mma njupụta na ike nke ngwaahịa na mbenata afterburning Inhomogeneity nke. nhazi nhazi;
3. Iji carboxymethyl cellulose dị ka ihe nkedo, ọ dịghị ash mgbe ọkụ, na e nwere nnọọ ole na ole na-agbaze ihe, nke na-agaghị emetụta ọrụ okpomọkụ nke ngwaahịa.
Njirimara ngwaahịa:
1. CMC na-acha ọcha ma ọ bụ odo odo fibrous granular ntụ ntụ, enweghị ụtọ, odorless, na-adịghị egbu egbu, mfe soluble na mmiri, na-etolite a transperent viscous colloid, na ngwọta bụ na-anọpụ iche ma ọ bụ ubé alkaline. Enwere ike ịchekwa ya ruo ogologo oge na-enweghị mmebi, ọ dịkwa mma n'okpuru obere okpomọkụ na ìhè anyanwụ. Otú ọ dị, n'ihi mgbanwe ngwa ngwa nke okpomọkụ, acidity na alkalinity nke ngwọta ga-agbanwe. N'okpuru mmetụta nke ụzarị ultraviolet na microorganisms, ọ ga-emekwa ka hydrolysis ma ọ bụ oxidation, viscosity nke ngwọta ga-ebelata, na ọbụna ihe ngwọta ga-emerụ. Ọ bụrụ na ekwesịrị ịchekwa ihe ngwọta ahụ ruo ogologo oge, enwere ike ịhọrọ ihe nchekwa kwesịrị ekwesị, dị ka formaldehyde, phenol, benzoic acid, na ogige mercury organic.
2. CMC bụ otu ihe ahụ dị ka ndị ọzọ polymer electrolytes. Mgbe ọ gbazere, ọ ga-ebu ụzọ zaa, ihe ndị ahụ ga-arapara n'ahụ ibe ha iji mepụta ihe nkiri ma ọ bụ ìgwè viscose, nke mere na a pụghị ịgbasasị ha, mana mgbasa na-adị ngwa ngwa. Ya mere, mgbe na-akwadebe ya aqueous ngwọta, ma ọ bụrụ na ahụ nwere ike uniformly wetted mbụ, mgbasa ọnụego nwere ike budata ụba.
3. CMC bụ hygroscopic. Nkezi mmiri nke CMC na ikuku na-abawanye na mmụba nke ikuku ikuku ma na-ebelata na mmụba nke ikuku ikuku. Mgbe nkezi okpomọkụ nke ụlọ dị 80%-50%, nha nha nha dị n'elu 26%, na mmiri ngwaahịa na-erughị 10%. Ya mere, nkwakọ ngwaahịa na nchekwa kwesịrị ịṅa ntị na ihe mkpuchi mmiri.
4. Nnụnụ dị arọ dị arọ dị ka zinc, ọla kọpa, lead, aluminum, silver, iron, tin, chromium, wdg, nwere ike ime ka mmiri ozuzo na ngwọta mmiri CMC, na mmiri ozuzo ka nwere ike ịgbazekwa na sodium hydroxide ma ọ bụ ammonium hydroxide ngwọta. ma e wezụga isi acetate ndu .
5. Organic ma ọ bụ inorganic acid ga-emekwa ka mmiri ozuzo na ngwọta nke ngwaahịa a. Ihe ngosi mmiri ozuzo dị iche iche n'ihi ụdị na ntinye nke acid. N'ozuzu, mmiri ozuzo na-apụta n'okpuru pH 2.5, enwere ike nwetaghachi ya mgbe nkwụsịtụ site na ịgbakwunye alkali.
6. Nnu dị ka calcium, magnesium na nnu tebụl adịghị enwe mmetụta mmiri ozuzo na ngwọta CMC, ma na-emetụta mbelata nke viscosity.
7. CMC dakọtara na ihe ndị ọzọ na-edozi mmiri, ihe nro na resins.
8. Ihe nkiri nke CMC sere na-emikpu na acetone, benzene, butyl acetate, carbon tetrachloride, castor oil, ọka mmanụ, ethanol, ether, dichloroethane, petroleum, methanol, methyl acetate, methyl ethyl ether na ụlọ okpomọkụ Ketone, toluene, turpentine. , xylene, mmanụ ahụekere, wdg nwere ike ọ gaghị agbanwe n'ime awa 24.
Oge nzipu: Jan-05-2023