Ngwakọta ihe na-adịghị omimi, nke na-arụ ọrụ dị mkpa n'ịkwalite arụmọrụ nke iwuli ngwa agha akọrọ, na-akpata ihe karịrị 40% nke ọnụ ahịa ihe onwunwe na ngwa agha akọrọ. Ndị nrụpụta mba ofesi na-enye ọtụtụ ngwakọta ihe dị n'ahịa ime obodo, ndị na-ebubata ngwaahịa na-enyekwa ọnụego ntụaka nke ngwaahịa ndị ahụ. Ọnụ ego nke ngwaahịa ngwa agha akọrọ ka dị elu, ọ na-esikwa ike ime ka ngwa agha akọrọ na ngwa agha a na-ejikarị eme ihe n'ọtụtụ buru ibu na ọtụtụ ụdị dị iche iche. Ụlọ ọrụ mba ofesi na-achịkwa ngwaahịa ahịa dị elu, ndị na-emepụta ngwa agha akọrọ na-enwekwa obere uru na ọnụ ahịa adịghị mma; itinye ngwa agha enweghị nyocha usoro na nke ezubere iche, ma na-agbaso usoro mba ofesi n'enweghị isi. N'ebe a, ihe anyị na-ekerịta gị bụ, kedu ọrụ nke hydroxypropyl methylcellulose na ngwakọta nkịtị nke ngwa agha akọrọ?
Hydroxypropyl methylcellulose bụ ụdị cellulose nke mmepụta na oriri ya na-amụba ngwa ngwa n'afọ ndị na-adịbeghị anya. A na-eji owu a nụchara anụcha eme Hydroxypropyl methylcellulose mgbe emechara ọgwụgwọ alkalization, na-eji propylene oxide na methyl chloride dị ka ihe etherification, nke bụ ether ngwakọta cellulose na-abụghị ionic nke e mepụtara site na usoro mmeghachi omume. Ogo nke nnọchi na-abụkarị 1.2~2.0. Njirimara ya dị iche iche dabere na oke nke ọdịnaya methoxyl na ọdịnaya hydroxypropyl. Àgwà nke hydroxypropyl methylcellulose bụ ndị a:
1. Hydroxypropyl methylcellulose na-agbaze ngwa ngwa na mmiri oyi, ọ ga-enwekwa nsogbu mgbe ọ na-agbaze na mmiri ọkụ. Mana okpomọkụ ya na-agbaze na mmiri ọkụ dị elu karịa nke methyl cellulose. A na-emekwa ka mmiri oyi na-agbaze nke ọma ma e jiri ya tụnyere methyl cellulose.
2. Ọbara hydroxypropyl methylcellulose nwere njikọ na ibu molekul ya. Ka ibu molekul buru ibu, otú ahụ ka viscosity ya si dị elu. Okpomọkụ na-emetụtakwa viscosity ya, ka okpomọkụ na-abawanye, viscosity na-ebelata. Agbanyeghị, mmetụta nke viscosity na okpomọkụ ya dị ala karịa nke methyl cellulose. Mmiri ya na-adịgide adịgide mgbe echekwara ya na okpomọkụ ụlọ.
3. Njide mmiri nke hydroxypropyl methylcellulose dabere na ọnụọgụ mgbakwunye ya, viscosity, wdg, na ọnụego njigide mmiri ya n'okpuru otu ọnụọgụ mgbakwunye ahụ dị elu karịa nke methyl cellulose.
4. Hydroxypropyl methylcellulose kwụsiri ike na acid na alkali, mmiri mmiri ya na-adịkwa mma nke ukwuu n'ogo pH = 2 ~ 12. Caustic soda na mmiri lime anaghị enwe mmetụta dị ukwuu na arụmọrụ ya, mana alkali nwere ike ime ka ọ gbazee ngwa ngwa ma mee ka ọ dịkwuo mma. Hydroxypropyl methylcellulose kwụsiri ike na nnu nkịtị, mana mgbe njupụta nke mmiri nnu dị elu, viscosity nke mmiri hydroxypropyl methylcellulose na-abawanye.
5. Enwere ike ịgwakọta Hydroxypropyl methylcellulose na polima ndị na-agbaze mmiri iji mepụta ngwọta viscosity dị otu ma dị elu. Dịka polyvinyl alcohol, starch ether, chịngọm akwụkwọ nri, wdg.
6. Hydroxypropyl methylcellulose nwere ike iguzogide enzyme karịa methylcellulose, ohere nke mmebi nke enzyme nke ngwọta ya dị ala karịa nke methylcellulose.
7. Nrapado nke hydroxypropyl methylcellulose na ihe owuwu ngwa agha dị elu karịa nke methylcellulose.
Oge ozi: Mee-09-2023