Kedu ihe bụ hydroxyethyl cellulose?

Kedu ihe bụ hydroxyethyl cellulose?

Hydroxyethyl cellulose (HEC), a na-acha ọcha ma ọ bụ icha mmirimmiri odo, enweghị isi, na-adịghị egbu egbu fibrous ma ọ bụ powdery siri ike, kwadebere site etherification nke alkaline cellulose na ethylene oxide (ma ọ bụ chlorohydrin), nke genus Nonionic soluble cellulose ethers. N'ihi na HEC nwere ezigbo ihe dị ka 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, textiles, papermaking and polymers. Polymerization na mpaghara ndị ọzọ.

A na-eji hydroxyethyl cellulose eme ihe n'ọtụtụ ebe na ụlọ ọrụ mkpuchi. Ka anyị leba anya ka o si arụ ọrụ na mkpuchi:

Kedu ihe na-eme mgbe hydroxyethyl cellulose zutere ihe mkpuchi mmiri?

Dị ka a na-abụghị ionic surfactant, hydroxyethyl cellulose nwere ihe ndị a na mgbakwunye na ndim, suspending, bonding, flotation, film-forming, dispersing, water njide na inye nchebe colloid:

HEC na-agbaze na mmiri ọkụ ma ọ bụ mmiri oyi, ọ naghị emepụta ya na okpomọkụ dị elu ma ọ bụ na-esi ísì ụtọ, na-eme ka ọ nwee ọdịdị dị iche iche nke solubility na viscosity, yana gelling na-abụghị thermal;

Ikike njide mmiri dị okpukpu abụọ nke methyl cellulose, ọ nwekwara usoro nhazi ka mma;

Ndị na-abụghị ionic n'onwe ya nwere ike ibikọ ọnụ na ọtụtụ polymers ndị ọzọ na-agbaze mmiri, surfactants, na salts, ma bụrụ ezigbo colloidal thickener nwere ngwọta electrolyte dị elu;

Tụnyere na ghọtara methyl cellulose na hydroxypropyl methyl cellulose, ike dispersing nkeHECbụ nke kachasị njọ, mana ike colloid nchebe bụ nke kachasị ike.

Ebe ọ bụ na hydroxyethyl cellulose a na-agwọ n'elu bụ ntụ ntụ ma ọ bụ nke siri ike, Shandong Heda na-echetara gị ka ị ṅaa ntị na isi ihe ndị a mgbe ị na-akwadebe mmanya hydroxyethyl cellulose nne:

(1) Tupu na mgbe ịgbakwunye hydroxyethyl cellulose, ọ ga-anọgide na-akpali akpali ruo mgbe ngwọta bụ kpamkpam transperent na doro anya.

(2) A ghaghị iji nwayọọ nwayọọ gbanye ya n'ime gbọmgbọm agwakọta, ma ejikọtala hydroxyethyl cellulose na hydroxyethyl cellulose n'ime gbọmgbọm agwakọta n'ọtụtụ ma ọ bụ n'ụdị lumps na bọọlụ.

(3) Okpomọkụ mmiri na uru pH nke mmiri nwere njikọ doro anya na mgbasa nke hydroxyethyl cellulose, ya mere, a ga-etinye nlebara anya pụrụ iche na ya.

(4) Adịla mgbe etinyela ụfọdụ alkaline bekee na ngwakọta tupu hydroxyethyl cellulose ntụ ntụ na-tinye na mmiri. Ịkwalite pH naanị mgbe ịsachara mmiri ga-enyere aka na mgbasa.

(5) Dị ka o kwere mee, tinye ọgwụ 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 na nne mmanya na-esiri ike ijide.