Haịdroxyethyl cellulose (HEC), ihe siri ike nke na-acha ọcha ma ọ bụ odo odo dị mfe, nke na-enweghị isi, nke na-anaghị egbu egbu ma ọ bụ nke nwere ntụ ntụ, nke e ji etherification nke alkaline cellulose na ethylene oxide (ma ọ bụ chlorohydrin) kwadebe, nke sitere na ụdị cellulose ethers nke Nonionic soluble. N'ihi na HEC nwere ezigbo ihe onwunwe nke ịka nká, nkwụsịtụ, ịgbasa, emulsifying, njikọta, imepụta ihe nkiri, ichebe mmiri na inye colloids nchebe, ejirila ya mee ihe nke ukwuu na nchọpụta mmanụ, mkpuchi, owuwu, ọgwụ na nri, ákwà, ime akwụkwọ na polymers. Polymerization na ubi ndị ọzọ.
Mgbe hydroxyethyl cellulose zutere agba sitere na mmiri?
Dịka ihe na-adịghị eme ka ihe dị n'ime mmiri na-abụghị ionic, hydroxyethyl cellulose nwere ihe ndị a na mgbakwunye na ịka njọ, nkwụsịtụ, ijikọ, flotation, ịmepụta ihe nkiri, ịgbasa, idobe mmiri na inye colloids nchebe:
A na-agbaze HEC n'ime mmiri ọkụ ma ọ bụ mmiri oyi, ọ naghịkwa agbapụta n'oge okpomọkụ dị elu ma ọ bụ mgbe ọ na-esi mmiri, nke na-eme ka o nwee ọtụtụ njirimara ịgbaze na viscosity, yana gelling na-abụghị okpomọkụ;
Ike nchekwa mmiri dị okpukpu abụọ karịa nke methyl cellulose, ọ na-achịkwakwa mmiri nke ọma;
Ma e jiri ya tụnyere methyl cellulose na hydroxypropyl methyl cellulose a ma ama, ikike ịgbasa nke HEC bụ nke kacha njọ, mana ikike nchekwa colloid bụ nke kachasị ike;
Ọ bụghị ionic ma nwee ike ibikọ na ọtụtụ polymers ndị ọzọ na-agbaze mmiri, surfactants, na nnu. Ọ bụ ezigbo ihe na-eme ka ọ sie ike maka ngwọta electrolyte dị elu.
Kedu ka esi eji hydroxyethyl cellulose?
Tinye ozugbo n'oge mmepụta - usoro a kachasị mfe ma na-ewe obere oge:
Malite ịkpagharị mgbe niile n'ọsọ dị ala ma jiri nwayọ gwakọta hydroxyethyl cellulose ahụ n'ime mmiri ahụ ma nọgide na-akpali ya ruo mgbe ihe niile ga-amịkọrọ mmiri. Mgbe ahụ tinye ihe nchekwa na ihe mgbakwunye dị iche iche. Dị ka agba, ihe enyemaka ịgbasa, ammonia, wdg. Gwakọta ruo mgbe hydroxyethyl cellulose niile gbazee kpamkpam (viscosity nke mmiri ahụ na-abawanye nke ukwuu) tupu ịtinye ihe ndị ọzọ dị na usoro ahụ iji mee mmeghachi omume ahụ.
E tinyere mmanya nne
Ọ bụ ịkwadebe ihe ọṅụṅụ nne nwere oke ọdịnaya, wee tinye ya na ngwaahịa ahụ. Uru nke usoro a bụ na ọ nwere ike ịgbanwe agbanwe karịa ma enwere ike itinye ya ozugbo na ngwaahịa emechara, mana a ga-echekwa ya nke ọma. Usoro nke usoro a yiri ọtụtụ usoro dị na Usoro 1; ihe dị iche bụ na ọ dịghị mkpa maka ihe na-akpali akpali dị elu, naanị ụfọdụ ihe na-akpali akpali nwere ike zuru oke iji mee ka hydroxyethyl cellulose gbasaa n'otu ebe na ngwọta ahụ ka enwere ike iji, ma nọgide na-agwakọta ruo mgbe ọ ga-agbaze kpamkpam ka ọ bụrụ ihe ngwọta viscous. Agbanyeghị, a ghaghị ịmara na a ga-agbakwunye ihe na-akpata nje na mmanya nne ozugbo enwere ike.
Ndụmọdụ dị mma:
Ebe ọ bụ na hydroxyethyl cellulose nke a na-agwọ n'elu ya siri ike ma ọ bụ nwee ntụ ntụ, mgbe ị na-akwadebe mmanya nne hydroxyethyl cellulose, chetara gị ka ị ṅaa ntị n'ihe ndị a:
Tupu na mgbe etinyere hydroxyethyl cellulose, a ga-anọgide na-agwakọta ya ruo mgbe ngwọta ahụ ga-apụta ìhè ma doo anya nke ọma;
A ga-eji nwayọọ nwayọọ gwakọta ya n'ime gbọmgbọm ngwakọta ahụ, ejikọkwala akpụkọ ma ọ bụ spheroids na hydroxyethyl cellulose ozugbo n'ime gbọmgbọm ngwakọta ahụ;
Okpomọkụ mmiri na uru pH nke mmiri nwere njikọ dị mkpa na mgbasa nke hydroxyethyl cellulose, yabụ a kwesịrị ilebara ya anya nke ọma;
Etinyela ihe alkaline ụfọdụ na ngwakọta ahụ tupu e tinye yahydroxyethyl celluloseA na-etinye ntụ ntụ na mmiri. Ịbawanye uru pH mgbe a mịchara ya ga-enyere aka ịgbaze;
Dịka o kwere mee, tinye ọgwụ nje tupu oge eruo;
Mgbe a na-eji hydroxyethyl cellulose nke nwere oke viscosity, oke mmanya nne ekwesịghị ịdị elu karịa 2.5-3% (site na ibu), ma ọ bụghị ya, ọ ga-esiri ike ijikwa mmanya nne.
Oge ozi: Eprel-28-2024