hydroxyethyl cellulose

Hydroxyethyl cellulose (HEC) bụ ihe siri ike nke na-acha ọcha ma ọ bụ odo odo, nke na-enweghị isi, nke na-anaghị egbu egbu ma ọ bụ nke ntụ ntụ nke e ji etherification nke alkaline cellulose na ethylene oxide (ma ọ bụ chlorohydrin) kwadebe. Cellulose ethers nke na-agbaze na-abụghị ionic. N'ihi na HEC nwere ezigbo ihe onwunwe nke ịka njọ, ịkwụsịtụ, ịgbasa, emulsifying, ijikọ, ịmepụta ihe nkiri, ichebe mmiri na inye colloids nchebe, ejirila ya mee ihe nke ukwuu na nchọpụta mmanụ, mkpuchi, owuwu, ọgwụ na nri, ákwà, imepụta akwụkwọ na polymers. Polymerization na ubi ndị ọzọ. Hydroxyethyl cellulose anaghị akwụsi ike na okpomọkụ na nrụgide nkịtị, na-ezere iru mmiri, okpomọkụ, na okpomọkụ dị elu, ma nwee ezigbo nnu na-agbaze maka dielectrics. A na-ahapụ mmiri mmiri ya ka o nwee nnukwu nnu ma kwụsie ike.

Ntuziaka
Jikọọ ozugbo na mmepụta

1. Tinye mmiri dị ọcha n'ime nnukwu bọket e ji ihe na-eme ka ọ dị nro nke ukwuu.

2. Malite ịkpagharị mgbe niile n'ọsọ dị ala ma jiri nwayọ gwakọta hydroxyethyl cellulose n'ime mmiri ahụ nke ọma.

3. Gaa n'ihu na-agwakọta ruo mgbe ihe niile dị n'ime ya ga-amịkọrọ mmiri.

4. Mgbe ahụ, tinye ihe ndị na-egbochi ọrịa, ihe mgbakwunye alkaline dị ka agba, ihe enyemaka mgbasa, mmiri ammonia.

5. Gwakọta ruo mgbe hydroxyethyl cellulose niile gbazere kpamkpam (ọbara ọbara nke ihe ngwọta ahụ na-abawanye nke ukwuu) tupu etinye ihe ndị ọzọ na usoro ahụ, ma gwerie ya ruo mgbe ngwaahịa ahụ mechara.

E tinyere mmanya nne

Usoro a bụ ibu ụzọ kwadebe ihe ọṅụṅụ nne nwere oke njupụta, wee tinye ya na agba latex. Uru nke usoro a bụ na ọ nwere ike ịgbanwe agbanwe karịa ma enwere ike itinye ya ozugbo na agba emechara, mana ekwesịrị ịchekwa ya nke ọma. Usoro ndị a yiri usoro 1-4 na usoro 1, mana ọ bụghị na ọ dị mkpa ka a kpalie ya nke ọma iji gbazee kpamkpam ka ọ bụrụ ihe ngwọta viscous.

Jiri nlezianya kpachara anya
Ebe ọ bụ na hydroxyethyl cellulose a na-agwọ n'elu ya bụ ntụ ntụ ma ọ bụ cellulose siri ike, ọ dị mfe ijikwa ma gbazee n'ime mmiri ma ọ bụrụhaala na e dekọrọ ihe ndị a.

1. Tupu na mgbe etinyere hydroxyethyl cellulose, a ga-akpali ya mgbe niile ruo mgbe ngwọta ahụ ga-apụta ìhè ma doo anya nke ọma.

2. A ga-eji nwayọọ nwayọọ gwakọta ya n'ime gbọmgbọm ngwakọta ahụ. Etinyela hydroxyethyl cellulose nke kpụrụ akpụ ma ọ bụ bọọlụ ozugbo n'ime gbọmgbọm ngwakọta ahụ n'ọtụtụ buru ibu ma ọ bụ ozugbo.

3. Okpomọkụ mmiri na uru pH nke mmiri nwere njikọ dị mkpa na mgbasa nke hydroxyethyl cellulose, yabụ a kwesịrị ilebara ya anya nke ọma.

4. Etinyela ihe alkaline na ngwakọta ahụ tupu mmiri ekpoo ntụ hydroxyethyl cellulose. Ịbawanye uru PH mgbe ọ gbasịrị ọkụ na-enyere aka ịgbaze.

5. Dịka o kwere mee, tinye ọgwụ nje n'oge ọ bụla o kwere mee.

6. Mgbe a na-eji hydroxyethyl cellulose nke nwere oke viscosity, oke mmanya nne ekwesịghị ịdị elu karịa 2.5-3%, ma ọ bụghị ya, ọ na-esiri ike ịrụ ọrụ nne nne. hydroxyethyl cellulose nke a gwọrọ mgbe a gwọchara ya anaghị adị mfe ịmepụta akpụ ma ọ bụ okirikiri, ọ gaghịkwa emepụta colloids gburugburu na-anaghị agbaze mgbe etinyere ya mmiri.