Kedu ihe bụ Hydroxyethyl Cellulose?
Hydroxyethyl cellulose (HEC), a na-acha ọcha ma ọ bụ ìhè edo edo, enweghị isi, na-adịghị egbu egbu fibrous ma ọ bụ powdery siri ike, kwadebere site etherification mmeghachi omume nke alkaline cellulose na ethylene oxide (ma ọ bụ chlorohydrin), bụ nke Nonionic soluble cellulose ethers.Ebe ọ bụ na HEC nwere ezigbo ihe nke ịgbasa, nkwụsịtụ, ịgbasa, emulsifying, bonding, film-forming, na-echebe mmiri na inye colloid nchebe, a na-eji ya eme ihe n'ọtụtụ ebe na nchọpụta mmanụ, mkpuchi, ihe owuwu, ọgwụ, nri, textile, papermaking na polymer Polymerization. na ngalaba ndị ọzọ.
Kedu ihe na-eme mgbe hydroxyethyl cellulose zutere agba nke mmiri?
Dị ka onye na-abụghị ionic surfactant,hydroxyethyl cellulosenwere ihe ndị a na mgbakwunye na ịgba, nkwusioru, njide, na-ese n'elu mmiri, imepụta ihe nkiri, ịgbasa, njide mmiri na inye colloid nchebe:
HEC na-agbaze na mmiri ọkụ ma ọ bụ mmiri oyi, okpomọkụ dị elu ma ọ bụ esi mmiri na-enweghị mmiri ozuzo, nke mere na ọ nwere ọtụtụ ihe solubility na njirimara viscosity, na gelation na-abụghị thermal;
Ikike njide mmiri dị okpukpu abụọ dị elu karịa nke methyl cellulose, ọ na-enwekwa usoro nchịkwa ka mma;
E jiri ya tụnyere methyl cellulose a ma ama na hydroxypropyl methyl cellulose, ike mgbasa nke HEC bụ nke kachasị njọ, mana ikike colloid nchebe bụ nke kachasị ike.
Ọ bụ na-abụghị ionic na nwere ike ibikọ ọnụ na ọtụtụ ndị ọzọ mmiri-soluble polymers, surfactants, na salts.Ọ bụ ihe magburu onwe colloidal thickener maka elu-concentration electrolyte ngwọta;
Kedu ka esi eji hydroxyethyl cellulose mee ihe?Kedu ka esi etinye ya?
Tinye ozugbo n'oge mmepụta - usoro a bụ nke kachasị mfe ma na-ewe oge kacha nta.
Tinye mmiri dị ọcha na nnukwu ịwụ nke nwere nnukwu mixer.Malite ịmalite na-aga n'ihu na obere ọsọ ma jiri nwayọọ nwayọọ gbanye hydroxyethyl cellulose n'ime ngwọta nke ọma.Gaa n'ihu na-akpali ruo mgbe etinyere irighiri ihe niile.Mgbe ahụ tinye ihe nchekwa na ihe mgbakwunye dị iche iche.Dị ka pigments, dispersing enyemaka, amonia mmiri, wdg Na-akpali ruo mgbe niile hydroxyethyl cellulose bụ kpamkpam etisasịwo (na viscosity nke ngwọta na-abawanye nke ukwuu) tupu agbakwunyere ihe ndị ọzọ na usoro maka mmeghachi omume.
Ejiri nne mmanya
Ọ bụ iji kwadebe mmanya nne na-etinye uche dị elu na mbụ, wee tinye ya na ngwaahịa ahụ.Uru nke usoro a bụ na ọ nwere mgbanwe dị ukwuu ma nwee ike itinye ya ozugbo na ngwaahịa emechara, mana a ga-echekwa ya nke ọma.Usoro nke usoro a yiri ọtụtụ usoro na usoro 1;ihe dị iche bụ na ọ dịghị mkpa maka onye na-eme ihe ike dị elu, ma ọ bụ naanị ụfọdụ ndị na-eme ihe ike na-enwe ike zuru ezu iji mee ka hydroxyethyl cellulose na-agbasasị n'otu n'otu na ngwọta nwere ike ịga n'ihu na-enweghị nkwụsịtụ ruo mgbe agbazere kpamkpam n'ime ngwọta viscous.Otú ọ dị, a ghaghị iburu n'uche na a ga-agbakwunye ọgwụ fungicides na mmanya nne ozugbo enwere ike.
Ebe ọ bụ na hydroxyethyl cellulose a na-agwọ n'elu bụ ntụ ntụ ma ọ bụ siri ike siri ike, Lihongde na-echetara gị ka ị ṅaa ntị na isi ihe ndị a mgbe ị na-akwadebe mmanya nne hydroxyethyl cellulose:
(1) Tupu na mgbe agbakwunyere hydroxyethyl cellulose, a ga-emerịrị ya mgbe niile ruo mgbe ngwọta ya zuru oke ma doo anya.
(2) A ghaghị iji nwayọọ nwayọọ gbanye ya n'ime tankị ngwakọta, ma etinyela nnukwu ego ma ọ bụ tinye hydroxyethyl cellulose ozugbo n'ime tankị ngwakọta.
(3) Mmiri mmiri na PH uru na mmiri nwere mmekọrịta dị ịrịba ama na mgbasa nke hydroxyethyl cellulose, ya mere a ga-akwụ ụgwọ nlebara anya pụrụ iche.
(4) E tinyela ihe ụfọdụ alkaline na ngwakọta tupu e tinye ya na mmiri hydroxyethyl cellulose ntụ ntụ.Ịkwalite pH mgbe wetting na-enyere aka igbari.
(5) Dị ka o kwere mee, tinye ọgwụ antifungal n'ọdịnihu
(6) Mgbe ị na-eji hydroxyethyl cellulose viscosity dị elu, ịta mmanya nne ekwesịghị ịdị elu karịa 2.5-3% (site na ibu), ma ọ bụghị ya, ọ ga-esiri ike ijide ya.
Oge nzipu: Dec-26-2022