Nzute dị n'etiti hydroxyethyl cellulose na mkpuchi mmiri

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 ubi ndị ọzọ.

A na-ejikarị hydroxyethyl cellulose eme ihe na ụlọ ọrụ mkpuchi, ka anyị lelee otú o si arụ ọrụ na mkpuchi:

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.

Ebe ọ bụ na hydroxyethyl cellulose a na-agwọ n'elu bụ ntụ ntụ ma ọ bụ siri ike, ekwesịrị ịgbaso 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 ihe na-akpata antifungal n'ọdịnihu.
(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.