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 cellulose nwere ihe ndị a na mgbakwunye na ịgbatị, nkwụsịtụ, njikọ, na-ese n'elu mmiri, na-emepụta ihe nkiri, na-agbasasị, njide mmiri na inye colloid nchebe:
HEC na-agbaze na mmiri ọkụ ma ọ bụ mmiri oyi, okpomọkụ dị elu ma ọ bụ esi 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;
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;
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.
Kedu ka esi eji hydroxyethyl cellulose mee ihe? Kedu ka esi etinye ya?
1. Tinye ozugbo na mmepụta
Usoro a bụ nke kachasị mfe ma na-ewe obere oge.
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 kpalie ruo mgbe niile hydroxyethyl cellulose bụ kpamkpam etisasịwo (na viscosity nke ngwọta na-abawanye nke ukwuu) tupu agbakwunyere ndị ọzọ mmiri na usoro maka mmeghachi omume.
2. Kwanyere nne mmanya na-eche
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.
Ndụmọdụ dị mma
Ebe ọ bụ na hydroxyethyl cellulose a na-agwọ n'elu bụ ntụ ntụ ma ọ bụ nke siri ike, mgbe ị na-akwadebe mmanya nne hydroxyethyl cellulose, chetara gị ka ị ṅaa ntị n'ihe ndị a:
(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 ghara ịwụsa hydroxyethyl cellulose n'ime tankị ngwakọta n'ọtụtụ buru ibu ma ọ bụ ozugbo na lumps na bọọlụ.
(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 ịsachara mmiri ga-enyere aka na mgbasa.
(5) Tinye ọgwụ antifungal dị ka o kwere mee tupu oge eruo.
(6) Mgbe ị na-eji hydroxyethyl cellulose viscosity dị elu, ntinye nke mmanya nne ekwesịghị ịdị elu karịa 2.5-3% (site na ibu), ma ọ bụghị ya, ọ ga-esiri ike ijide ya.
Oge nzipu: Mar-21-2023