Hydroxyethyl cellulose (HEC) bụ ọcha ma ọ bụ ìhè edo edo, enweghị isi, fibrous na-adịghị egbu egbu ma ọ bụ powdery siri ike kwadebere site na etherification nke alkaline cellulose na ethylene oxide (ma ọ bụ chlorohydrin). Nonionic soluble cellulose ethers. Na mgbakwunye na ndim, suspending, bonding, flotation, film-forming, dispersing, water-taining and provide protection colloids, o nwere ihe ndị a:
1. HEC na-agbaze na mmiri ọkụ ma ọ bụ mmiri oyi, ọ naghị eme ka ọ dị elu na okpomọkụ dị elu ma ọ bụ na-esi ísì ụtọ, nke mere na ọ nwere ọdịdị dị iche iche nke solubility na viscosity, na gelation na-abụghị thermal;
2. Onye na-abụghị ionic n'onwe ya nwere ike ibikọ ọnụ na ọtụtụ ihe ndị ọzọ na-eme ka mmiri na-edozi mmiri, ndị surfactants na salts, ma bụrụ ezigbo colloidal thickener nwere ihe ngwọta electrolyte dị elu;
3. Ikike njide mmiri dị okpukpu abụọ dị elu karịa nke methyl cellulose, ọ na-enwekwa usoro nchịkwa ka mma.
4. N'iji ya tụnyere methyl cellulose a ma ama na hydroxypropyl methyl cellulose, ike mgbasa nke HEC bụ nke kachasị njọ, ma colloid nchebe nwere ike kachasị ike. N'ihi na HEC nwere ezigbo ihe nke ịgbasa, nkwụsịtụ, ịgbasa, emulsifying, bonding, film-forming, na-echebe mmiri na inye colloid nchebe, a na-ejikarị ya eme ihe na nchọpụta mmanụ, mkpuchi, ihe owuwu, ọgwụ na nri, textile, akwụkwọ na polymer polymerization. na ubi ndị ọzọ.
Mkpachapụ anya:
Ebe ọ bụ na hydroxyethyl cellulose a na-eme n'elu bụ ntụ ntụ ma ọ bụ cellulose siri ike, ọ dị mfe ijikwa na igbari n'ime mmiri ma ọ bụrụhaala na achọpụtara ihe ndị a.
1. Tupu na mgbe agbakwunyere hydroxyethyl cellulose, a ghaghị ịkpali ya mgbe niile ruo mgbe ngwọta ya zuru oke ma doo anya.
2. A ghaghị ịgbanye ya n'ime gbọmgbọm agwakọta nwayọọ nwayọọ, ma etinyela ya ozugbo hydroxyethyl cellulose nke emebere ka ọ bụrụ lumps na bọọlụ n'ime gbọmgbọm agwakọta.
3. Mmiri okpomọkụ na pH uru nke mmiri nwere njikọ doro anya na mgbasa nke hydroxyethyl cellulose, n'ihi ya, e kwesịrị ilebara ya anya pụrụ iche.
4. Ọ dịghị mgbe etinye ụfọdụ alkaline ihe na ngwakọta tupu hydroxyethyl cellulose ntụ ntụ na-ekpo ọkụ site na mmiri. Ịwelite uru PH mgbe ikpo ọkụ na-enyere aka maka mgbasa.
5. Dị ka o kwere mee, gbakwunye ọgwụ antifungal ozugbo enwere ike.
6. Mgbe ị na-eji hydroxyethyl cellulose viscosity dị elu, ntinye nke mmanya nne ekwesịghị ịdị elu karịa 2.5-3%, ma ọ bụghị ya, mmanya nne ga-esi ike ijikwa ya. Hydroxyethyl cellulose a gwọchara ya na-adịkarịghị adị mfe ịmepụta lumps ma ọ bụ spheres, ọ gaghị etolite colloid sppherical nke na-adịghị ahụkebe ma gbakwunyere mmiri.
Oge nzipu: Nov-15-2022