otu. Ihe dị iche n'etiti ihe e metọrọ emetọhydroxypropyl methylcellulose (HPMC)na hydroxypropyl methylcellulose dị ọcha (HPMC)
1. Ọdịdị: hydroxypropyl methylcellulose HPMC dị ọcha na-adị nro ma nwee obere njupụta, site na 0.3-0.4g/ml; hydroxypropyl methylcellulose a gwakọtara agwakọta HPMC nwere mmiri mmiri ka mma ma dị arọ, enwere nnukwu ọdịiche dị n'ọdịdị na ezigbo ngwaahịa ahụ.
2. Ọnọdụ: Ntụ ntụ hydroxypropyl methylcellulose HPMC dị ọcha na-adị nro n'okpuru microscope ma ọ bụ iko na-eme ka ọ dị nkọ; ebe a na-ahụ HPMC nke a gwakọtara agwakọta dị ka ihe siri ike ma ọ bụ kristal n'okpuru microscope ma ọ bụ iko na-eme ka ọ dị nkọ.
3. Isi: hydroxypropyl methylcellulose HPMC enweghị ike isi isi ammonia, starch na mmanya; hydroxypropyl methylcellulose HPMC nwere ike isi isi niile, ọbụlagodi na ọ nweghị ụtọ, ọ ga-adị arọ.
4. Mmiri mmiri: mmiri mmiri dị ọcha nke hydroxypropyl methylcellulose HPMC doro anya, ọ na-ebufe ọkụ dị elu, ọ na-ejide mmiri nke ọma ≥ 97%; mmiri mmiri nke hydroxypropyl methylcellulose HPMC nke a gwakọtara agwakọta adịghị mma, ọ na-esikwa ike iru 80%.
Nke abụọ, ijigide mmiri nke hydroxypropyl methylcellulose HPMC, na-amata uru na ọghọm dị na ya:
Njide mmiri nke methyl cellulose ether n'okpuru ọnọdụ okpomọkụ dị elu bụ ihe ngosi dị mkpa iji mata àgwà nke methyl cellulose ether. Ihe ndị dị ka okpomọkụ ikuku, okpomọkụ na ọsọ nrụgide ifufe ga-emetụta ọnụego mgbanwe mmiri na simenti na ngwaahịa dabere na gypsum. Ya mere, n'oge dị iche iche, enwere ụfọdụ ọdịiche na mmetụta njigide mmiri nke ngwaahịa nwere otu ọnụọgụ HPMC agbakwunyere. N'ime owuwu a kapịrị ọnụ, enwere ike ịgbanwe mmetụta njigide mmiri nke slurry site na ịbawanye ma ọ bụ ibelata ọnụọgụ HPMC agbakwunyere. Ngwaahịa HPMC dị mma nke hydroxypropyl methylcellulose nwere ike idozi nsogbu nke njigide mmiri nke ọma n'okpuru okpomọkụ dị elu.
Enwere ike ịgbasa methylcellulose dị elu n'otu ụzọ na nke ọma na simenti na ngwaahịa gypsum, ma kechie ihe niile siri ike, wee mepụta ihe nkiri mmiri mmiri, mmiri dị na ntọala ahụ na-ewepụta nwayọ nwayọ ruo ogologo oge, na inorganic Mmeghachi omume mmiri nke ihe gelled na-eme ka ike njikọ na ike nrụgide nke ihe ahụ sie ike. hydroxypropyl methylcellulose HPMC dị elu, ịdị n'otu ya dị mma nke ukwuu, otu methoxy na hydroxypropoxy ya na-ekesa n'otu n'otu n'akụkụ yinye molekul cellulose, ọ nwere ike ịbawanye oxygen na njikọ hydroxyl na ether Ike nke atọm ijikọta na mmiri iji mepụta njikọ hydrogen na-eme ka mmiri efu ghọọ mmiri ejikọtara, si otú a na-achịkwa mmiri evaporation nke ọma nke ihu igwe dị elu na-akpata ma na-enweta njide mmiri dị elu.
Ya mere, n'ọrụ owuwu okpomọkụ dị elu, iji nweta mmetụta njide mmiri, ọ dị mkpa ịgbakwunye ngwaahịa HPMC dị elu n'ọtụtụ zuru oke dịka usoro si dị, ma ọ bụghị ya, a gaghị enwe mmiri zuru oke, ike belatara, mgbawa, oghere na mwụfu nke nsogbu nkụ oke kpatara, kamakwa ọ na-eme ka ihe isi ike owuwu nke ndị ọrụ dịkwuo elu. Ka okpomọkụ na-ebelata, enwere ike ibelata mmiri HPMC agbakwunyere nwayọ nwayọ, enwere ike nweta otu mmetụta njide mmiri ahụ.
3. Mgbaze nke hydroxypropyl methylcellulose HPMC
N'ụlọ ọrụ owuwu ụlọ, a na-etinyekarị hydroxypropyl methylcellulose HPMC n'ime mmiri na-anọpụ iche, a na-agbazekwa ngwaahịa HPMC naanị ya iji chọpụta ọnụego mgbaze. Mgbe etinyere ya na mmiri na-anọpụ iche naanị ya, ngwaahịa nke na-agbakọta ngwa ngwa na-enweghị mgbaze bụ ngwaahịa na-enweghị mgbaze elu; mgbe etinyechara ya na mmiri na-anọpụ iche naanị ya, ngwaahịa nke nwere ike ịgbasa ma ghara ịgbakọta ọnụ bụ ngwaahịa nwere ọgwụgwọ elu. Mgbe hydroxypropyl methylcellulose HPMC nke a na-anaghị agwọ ọrịa na-agbaze naanị ya, otu ihe ahụ na-agbaze ngwa ngwa ma mepụta ihe nkiri ngwa ngwa, na-eme ka mmiri ghara ịbanye na ihe ndị ọzọ, na-ebute mgbaze na mgbaze, nke a na-akpọ ugbu a mgbaze nwayọ na ngwaahịa ahịa.
Mkpụrụ ndụ ihe nketa hydroxypropyl methylcellulose HPMC nke a gwọrọ n'elu, n'ime mmiri na-anọpụ iche, enwere ike ịgbasa mkpụrụ ndụ ihe nketa nke ọ bụla na-enweghị njikọta, mana viscosity nke ngwaahịa agaghị adị ozugbo. Mgbe a mikpusịrị ya ruo oge ụfọdụ, a ga-ebibi usoro kemịkalụ nke ọgwụgwọ elu, mmiri ahụ nwekwara ike ịgbasa mkpụrụ ndụ ihe nketa HPMC. N'oge a, mkpụrụ ndụ ihe nketa ahụ agbasaala kpamkpam ma banye mmiri zuru oke, yabụ ngwaahịa ahụ agaghị agbakọta ma ọ bụ gbakọta mgbe agbazechara. Ọsọ mgbasa na ọsọ mgbasa dabere na oke ọgwụgwọ elu. Ọ bụrụ na ọgwụgwọ elu ahụ dị ntakịrị, ọsọ mgbasa ahụ dị nwayọ ma ọsọ ịrapara ahụ dị ngwa; ebe ngwaahịa nwere ọgwụgwọ elu miri emi nwere ọsọ mgbasa ngwa ngwa na ọsọ ịrapara nwayọ. Ọ bụrụ na ịchọrọ ime ka usoro ngwaahịa a gbazee ngwa ngwa na ọnọdụ a, ị nwere ike ịtụfu obere ihe alkaline mgbe ha gbazere naanị ha. A na-akpọkarị ahịa ugbu a ngwaahịa ozugbo. Njirimara nke ngwaahịa HPMC a gwọrọ n'elu bụ: na mmiri mmiri, mkpụrụ ndụ ihe nketa ahụ nwere ike ịgbasa ibe ha, nwere ike ịgbaze ngwa ngwa na ọnọdụ alkaline, ma gbazee nwayọ nwayọ na ọnọdụ na-anọpụ iche na acidic.
Àgwà nke hydroxypropyl methylcellulose HPMC a na-agwọghị bụ: otu ihe na-agbaze ngwa ngwa n'ọnọdụ acidic, alkaline, na nke na-anọpụ iche, mana ọ nweghị ike ịgbasa n'etiti ihe ndị dị na mmiri mmiri, nke na-ebute njikọta na njikọta. N'ọrụ n'ezie, mgbe usoro ngwaahịa a na ihe siri ike dị ka ntụ roba, simenti, ájá, wdg gbasaara, ọnụego mgbaze na-adị ngwa ngwa, ọ dịghịkwa mgbaze ma ọ bụ mgbaze. Mgbe ọ dị mkpa ịgbaze ngwaahịa HPMC iche iche, a ga-eji usoro ngwaahịa a kpachara anya, n'ihi na ọ ga-agbakọta ma jikọta ọnụ. Ọ bụrụ na ọ dị mkpa ịgbaze ngwaahịa HPMC hydroxypropyl methylcellulose nke a na-agwọghị n'elu iche, ọ dị mkpa ka a gbasaa ya n'otu aka ahụ na mmiri ọkụ 95°C, wee jụọ oyi ka ọ gbazee.
N'ọrụ mmepụta n'ezie, usoro ngwaahịa a na-agbazekarị mgbe e fesasịrị ya na ihe ndị ọzọ siri ike n'okpuru ọnọdụ alkaline, ọnụego mgbaze ya adịghịkwa iche na nke ngwaahịa a na-anaghị agwọ. Ọ dịkwa mma maka iji ya na ngwaahịa ndị a na-agbaze naanị ha, na-enweghị achịcha ma ọ bụ ntụpọ. Enwere ike ịhọrọ ụdị ngwaahịa ahụ kpọmkwem dịka ọnụego mgbaze nke ihe owuwu ahụ chọrọ si dị.
N'oge a na-arụ ụlọ ahụ, ma ọ bụ simenti ma ọ bụ gypsum nke e ji ihe na-eme ka ọ dị nro, ọtụtụ n'ime ha bụ sistem alkaline, ọnụọgụ HPMC agbakwunyere dịkwa obere, nke enwere ike ịgbasa n'etiti ihe ndị a. Mgbe etinyere mmiri,HPMCga-agbaze ngwa ngwa.
Oge ozi: Eprel-26-2024