Maka itinye ihe mkpuchi mmiri mmiri,hydroxypropyl methylcellulosenwere ezigbo ihe ndị na-eme ka ọkpụrụkpụ sie ike, ọ nwere ike ime ka ikike njikọ dị n'etiti ngwa agha mmiri na oyi akwa isi dịkwuo elu nke ukwuu, ọ nwekwara ike ime ka arụmọrụ mgbochi sag nke ngwa agha dịkwuo mma, yabụ a na-ejikarị ya eme ihe n'ịkwanye ngwa agha, sistemụ mkpuchi mgbidi mpụga na ngwa agha njikọ brik.
Maka mmetụta siri ike nke cellulose ether, ọ nwekwara ike ime ka ihe ndị e ji simenti agwakọtara ọhụrụ dịkwuo mma ma gbochie mgbasa, ma gbochie nsogbu nke delamination, nkewa na ọbara ọgbụgba na ngwa agha na simenti. Enwere ike itinye ya na simenti e ji eriri mee, simenti mmiri na simenti nke na-akpakọ onwe ya.
Hydroxypropyl methylcellulose nwere ike ime ka arụmọrụ viscous nke ihe ndị e ji simenti mee dịkwuo mma. Arụmọrụ a na-esitekarị na viscosity nke ngwọta cellulose ether. N'ozuzu, a na-eji ndeksi ọnụọgụ nke viscosity ekpebi viscosity nke ngwọta cellulose ether, ebe cellulose. Viscosity nke ether na-ezo akakarị na njupụta ụfọdụ nke ngwọta cellulose ether, nke na-abụkarị 2%, na okpomọkụ akọwapụtara, dị ka ogo 20 na ọnụego ntụgharị, site na iji ngwa nha akọwapụtara, dị ka viscometer ntụgharị. Uru viscosity.
Viscosity bụ otu n'ime ihe dị mkpa iji chọpụta arụmọrụ nke cellulose ether. Ka viscosity nke hydroxypropyl methylcellulose solution dị elu, otú ahụ ka viscosity nke ihe ndị e ji simenti mee ka mma, na arụmọrụ njikọta nke ihe ndị e ji ya mee ka ihe ndị ahụ dịkwuo mma. N'otu oge ahụ, o nwere ikike mgbochi ịla n'iyi na ikike mgbochi mgbasa siri ike, mana ọ bụrụ na viscosity ya dị oke elu, ọ ga-emetụta arụmọrụ mmiri na arụmọrụ nke ihe ndị e ji simenti mee.
Kedu ihe ga-emetụta viscosity nke hydroxypropyl methylcellulose? Isi ihe dabere na ihe ndị a.
1. Ka oke polymerization nke cellulose ether nke hydroxypropyl methylcellulose dị elu, otú ahụ ka ibu ya na-ebu ibu karịa, nke na-eme ka mmiri mmiri ya dị elu.
2. Ọ bụrụ na ọnụọgụ ma ọ bụ njupụta nke cellulose ether dị elu, viscosity nke mmiri mmiri ya ga-adị elu. Agbanyeghị, a ga-akpachara anya ịhọrọ oke kwesịrị ekwesị nke cellulose ether mgbe a na-eji ya, ọkachasị iji zere oke oke nke cellulose ether. Ọ ga-emetụta arụmọrụ nke moto na simenti.
3. Dịka ọtụtụ mmiri mmiri, oke mmiri nke ihe ngwọta cellulose ether ga-ebelata ka okpomọkụ na-arị elu, na ka ọnụ ọgụgụ cellulose ether na-arị elu, otú ahụ ka okpomọkụ na-ebelata. Ka mmetụta ya na-arị elu.
4. Mmiri cellulose ether na-abụkarị pseudoplastic, nke nwere njirimara nke ịcha ákwà. Ka ọnụego ịcha ákwà na-abawanye n'oge nnwale ahụ, otú ahụ ka viscosity ahụ na-ebelata.
A ga-ebelata njikọ nke ngwa agha n'ihi ike mpụga, nke bara uru maka ịkpụcha ngwa agha, na-eme ka ngwa agha ahụ nwee njikọ dị mma ma rụọ ọrụ n'otu oge ahụ. Agbanyeghị, ọ bụrụ na ngwa agha ahụ nwere ike ịdị irè.cellulose etherngwọta nwere oke njupụta. Mgbe oke njupụta dị ala ma oke njupụta dị obere, ọ ga-egosi njirimara nke mmiri Newtonian. Mgbe oke njupụta ahụ mụbara, ngwọta ahụ ga-egosi nwayọ nwayọ njirimara nke mmiri pseudoplastic, ọ bụrụkwa na oke njupụta ahụ dị elu, oke njupụta ahụ ga-apụta ìhè karịa.
Oge ozi: Eprel-28-2024