Carboxymethyl cellulose (Sodium Carboxymethyl Cellulose) zoro aka dị ka CMC, bụ elu-arụ ọrụ colloid polymer compound, bụ ụdị odorless, keenweghiuto, na-abụghị egbu egbu mmiri soluble cellulose mmepụta, na-mere nke absorbent owu site anụ ahụ-chemical ọgwụgwọ. The organic cellulose binder nke enwetara bụ ụdị cellulose ether, na sodium nnu na-ejikarị eme ihe, ya mere a ga-akpọ aha ya zuru ezu 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 a sịntetik polyelectrolyte, n'ihi ya enwere ike iji ya dị ka dispersant na stabilizer maka refractory slurries 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 dị n'elu, na-abanye ma na-ejikọta ahụ nke ọma, nke mere na enwere ike nweta ahụ ike dị elu;
2. Ebe ọ bụ na carboxymethyl cellulose bụ anionic polymer electrolyte, ọ nwere ike ibelata mmekọrịta n'etiti ahụ mgbe adsorbed n'elu nke ahụ, na-egwu ọrụ nke a dispersant na-echebe colloid, si otú ahụ na-emeziwanye njupụta na ike nke ngwaahịa na ibelata. mgbe-ọkụ. Inhomogeneity nke nhazi nhazi;
3. Iji carboxymethyl cellulose dị ka ihe nkedo, ọ dịghị ash mgbe ọkụ, na e nwere ole na ole na-agbaze ihe, nke na-adịghị emetụta ojiji okpomọkụ nke ngwaahịa.
Njirimara ngwaahịa
1. CMC bụ ọcha ma ọ bụ ubé odo fibrous granular ntụ ntụ, enweghị ụtọ, odorless, na-adịghị egbu egbu, mfe soluble na mmiri, na Nleta a transperent viscous colloid, ihe ngwọta 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 okpomọkụ ngwa ngwa, acidity na alkalinity nke ngwọta na-agbanwe. N'okpuru mmetụta nke ultraviolet radiation na microorganisms, ọ ga-emekwa ka hydrolysis ma ọ bụ oxidation, viscosity nke ngwọta ga-ebelata, na ọbụna 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, ogige mercury organic, wdg.
2. CMC bụ otu ihe ahụ dị ka ndị ọzọ polymer electrolytes. Mgbe ọ na-agbaze, ọ na-ebu ụzọ mepụta ihe na-egbuke egbuke, na ihe ndị ahụ na-ejikọta ibe ha iji mepụta ihe nkiri ma ọ bụ viscose, nke na-eme ka ọ ghara ikwe omume ịgbasa, ma na-agbaze nwayọọ nwayọọ. 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. Na ikuku, nkezi ọdịnaya mmiri nke CMC 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 ọdịnaya dị n'elu 26%, na ngwaahịa mmiri ọdịnaya 10% ma ọ bụ obere. Ya mere, nkwakọ ngwaahịa na nchekwa kwesịrị ịṅa ntị na ihe mkpuchi mmiri.
4. Zinc, ọla kọpa, lead, aluminum, silver, iron, tin, chromium na ndị ọzọ arọ metal salts nwere ike ịkpali CMC aqueous ngwọta. Ewezuga acetate ndu nke dabere na nnu, a ka nwere ike gbazekwa mmiri na sodium hydroxide ma ọ bụ ammonium hydroxide ngwọta. .
5. Organic ma ọ bụ inorganic acid ga-emekwa ka mmiri ozuzo na ngwọta nke ngwaahịa a. Ihe omume ọdịda mmiri na-adịgasị iche n'ụdị na ntinye nke acid. N'ozuzu, mmiri ozuzo na-eme mgbe pH dị n'okpuru 2.5, enwere ike nwetaghachi ya mgbe a kwụsịrị ya na alkali.
6. Na nnu dị ka calcium, magnesium na nnu tebụl, ọ dịghị enwe mmetụta mmiri ozuzo na ngwọta CMC, ma ọ na-emetụta mbelata viscosity.
7. CMC dakọtara na ihe ndị ọzọ na-edozi mmiri, ihe nro na resins.
8. Ihe nkiri sitere na CMC, na-emikpu na acetone, benzene, butyl acetate, carbon tetrachloride, mmanụ castor, mmanụ ọka, ethanol, ether, dichloroethane, mmanụ ala, methanol, methyl acetate, methyl ethyl acetate na ụlọ okpomọkụ Ketone, toluene, turpentine, xylene, mmanụ ahụekere, wdg nwere ike ghara ịgbanwe n'ime awa 24
Oge nzipu: Nov-07-2022