N'ime ngwa agha agwakọtara agwakọta, naanị obere cellulose ether nwere ike ime ka arụmọrụ nke ngwa agha mmiri ka mma nke ukwuu. A pụrụ ịhụ na cellulose ether bụ ihe mgbakwunye bụ isi nke na-emetụta arụmọrụ nke ngwa agha ahụ.
Ịhọrọ ụdị dị iche iche nke cellulose ethers nwere viscosities dị iche iche, nha dị iche iche nke ihe dị n'ime ya, ogo dị iche iche nke viscosity na ọnụọgụ agbakwunyere ga-enwekwa mmetụta dị iche iche na mmezi nke arụmọrụ nke drymix mortar. Ugbu a, ọtụtụ ihe eji eme ihe na plastering mortar anaghị arụ ọrụ nke ọma ijigide mmiri. Mmiri na slurry ga-ekewapụ mgbe nkeji ole na ole nke ịnọdụ ala. Ya mere, ọ dị oke mkpa itinye cellulose ether na simenti mortar.
Ka anyị leba anya nke ọma n'ọrụ nke cellulose ether na simenti!
1. Cellulose ether--Njide mmiri
Idobe mmiri bụ ọrụ dị mkpa nke methyl cellulose ether, ọ bụkwa arụmọrụ nke ọtụtụ ndị na-emepụta ngwa agha akọrọ n'ime obodo, ọkachasị ndị nọ na mpaghara ndịda nwere oke okpomọkụ na-elebara anya na ya. N'ime mmepụta ihe owuwu, ọkachasị ngwa agha ntụ ntụ akọrọ, cellulose ether na-arụ ọrụ a na-apụghị ịgbanwe agbanwe, ọkachasị n'imepụta ngwa agha pụrụ iche (ngwa agha agbanwere agbanwe), ọ bụ ihe dị mkpa ma dị mkpa.
Ọbara mmiri, oke mmiri, okpomọkụ gburugburu na nhazi molekul nke cellulose ether nwere nnukwu mmetụta na arụmọrụ nchekwa mmiri ya. N'otu ọnọdụ ahụ, ka viscosity nke cellulose ether na-aka mma, otú ahụ ka nchekwa mmiri ka mma; Ka usoro ọgwụgwọ ahụ dị elu, otú ahụ ka nchekwa mmiri ka mma. Ọtụtụ mgbe, obere usoro ọgwụgwọ cellulose ether nwere ike ime ka nchekwa mmiri nke mortar ka mma. Mgbe usoro ọgwụgwọ ahụ ruru ebe ụfọdụ, mgbe ọkwa nchekwa mmiri na-abawanye, usoro ọgwụgwọ nke ọnụego nchekwa mmiri na-ebelata; Mgbe okpomọkụ gburugburu na-arị elu, nchekwa mmiri nke cellulose ether na-ebelatakarị. Mana ụfọdụ cellulose ethers emezigharịrị nwekwara nchekwa mmiri ka mma n'okpuru ọnọdụ okpomọkụ dị elu; Cellulose ether nwere obere ọkwa nnọchi nwere arụmọrụ nchekwa mmiri ka mma.
Otu hydroxyl dị na molekul ether cellulose na atọm oxygen dị na njikọ ether ga-ejikọta ya na molekul mmiri iji mepụta njikọ hydrogen, na-eme ka mmiri efu bụrụ mmiri ejikọtara, si otú a na-arụ ọrụ dị mma n'ijide mmiri;Ihemolekul mmiri na cellulose ether molekul yinye Interdiffusion na-enye ohere ka molekul mmiri banye n'ime cellulose ether macromolecular yinye ma nwee ike ijikọ siri ike, si otú a na-emepụta mmiri n'efu, mmiri gbagọrọ agbagọ, ma melite njigide mmiri nke simenti slurry; Cellulose ether na-eme ka ihe onwunwe rheological nke simenti slurry ọhụrụ ka mma, nhazi netwọk porous na nrụgide osmotic ma ọ bụ ihe ndị na-emepụta ihe nkiri nke cellulose ether na-egbochi mgbasa nke mmiri.
2. Cellulose ethers - Ịkpụ na Ịkpụ
Cellulose ether na-enye moto mmiri ahụ ezigbo viscosity, nke nwere ike ime ka ikike njikọ dị n'etiti moto mmiri na oyi akwa ntọala dịkwuo elu, ma melite arụmọrụ mgbochi sag nke moto ahụ. A na-ejikarị ya eme ihe n'ọtụtụ ebe na moto plastering, moto njikọ brik na sistemụ mkpuchi mgbidi mpụga. Mmetụta siri ike nke cellulose ether nwekwara ike ime ka ikike mgbochi mgbasa na ịdị n'otu nke ihe ndị a gwakọtara ọhụrụ dịkwuo elu, gbochie delamination na nkewa. Enwere ike iji ya na simenti eriri, simenti mmiri na simenti na-akpakọ onwe ya.
Mmetụta siri ike nke cellulose ether na ihe ndị e ji simenti mee na-esi na viscosity nke ihe ngwọta cellulose ether pụta. N'otu ọnọdụ ahụ, ka viscosity nke cellulose ether dị elu, otú ahụ ka viscosity nke ihe e ji simenti emezigharịrị ka mma, mana ọ bụrụ na viscosity dị oke elu, ọ ga-emetụta mmiri na ọrụ nke ihe ahụ (dịka ịrapara mma plastering). Srọt nke na-eme ka ihe dị n'otu na simenti nke na-eme ka ihe dị n'otu, nke chọrọ mmiri dị elu, chọrọ obere viscosity nke cellulose ether. Na mgbakwunye, mmetụta siri ike nke cellulose ether ga-eme ka mmiri chọọ ihe ndị e ji simenti mee ma mee ka mkpụrụ nke simenti dịkwuo elu.
Mmiri mmiri cellulose ether cellulose nwere nnukwu thixotropy, nke bụkwa ihe dị mkpa na cellulose ether. Mmiri mmiri nke methyl cellulose na-enwekarị mmiri mmiri pseudoplastic na nke na-abụghị thixotropic n'okpuru okpomọkụ gel ya, mana ọ na-egosi ihe ndị Newtonian na-agba na obere nha. Pseudoplasticity na-abawanye ka molekul dị arọ ma ọ bụ njupụta nke cellulose ether, n'agbanyeghị ụdị ihe nnọchi na ogo nke nnọchi. Ya mere, cellulose ethers nke otu ọkwa viscosity, ma ọ bụ HPMC ma ọ bụ HEMC, ga-egosipụta otu ihe ndị ahụ ma ọ bụrụhaala na a na-eme ka ntinye na okpomọkụ dịgide. A na-emepụta gels nhazi mgbe okpomọkụ dị elu, mmiri mmiri thixotropic na-apụtakwa.
Oke njupụta na obere viscosity cellulose ethers na-egosi thixotropy ọbụna n'okpuru okpomọkụ gel. Ihe onwunwe a bara uru nke ukwuu na nhazi nke ọkwa na ịda mba na owuwu nke ụlọ. Ọ dị mkpa ịkọwa ebe a na ka viscosity nke cellulose ether dị elu, otú ahụ ka njigide mmiri ka mma, mana ka viscosity dị elu, otú ahụ ka molekul dị arọ nke cellulose ether dị elu, na mbelata kwekọrọ na ya na mmiri, nke nwere mmetụta ọjọọ na ntinye nke moto na arụmọrụ owuwu.
3. Cellulose ether - Mmetụta ntinye ikuku
Cellulose ether nwere mmetụta doro anya na-abanye n'ikuku n'ihe ndị e ji simenti ọhụrụ mee. Cellulose ether nwere ma otu hydrophilic (òtù hydroxyl, otu ether) na otu hydrophobic (òtù methyl, mgbanaka glucose), ọ bụkwa ihe na-eme ka ihe dị n'elu mmiri rụọ ọrụ nke ọma, si otú a na-enwe mmetụta ntinye ikuku. Mmetụta ntinye ikuku nke cellulose ether ga-emepụta mmetụta "bọọlụ", nke nwere ike ime ka arụmọrụ ọrụ nke ihe ndị a gwakọtara ọhụrụ ka mma, dị ka ịbawanye ike na ịdị ire ụtọ nke moto ahụ n'oge ọrụ, nke na-eme ka moto ahụ gbasaa; ọ ga-emekwa ka mmepụta moto ahụ dịkwuo elu, belata ọnụ ahịa mmepụta moto; mana ọ ga-eme ka porosity nke ihe siri ike dịkwuo elu ma belata ihe onwunwe ya dịka ike na modulus na-agbanwe agbanwe.
Dịka ihe na-eme ka mmiri dị n'ime mmiri, cellulose ether nwekwara mmetụta mmiri mmiri ma ọ bụ mmanụ n'ahụ ihe ndị e ji simenti mee, nke na-eme ka mmiri mmiri nke ihe ndị e ji simenti mee dịkwuo mma yana mmetụta ikuku ya, mana mmetụta ya nke mmiri mmiri ga-ebelata mmiri mmiri. Mmetụta nke mmiri mmiri bụ njikọta nke mmetụta plastik na mmiri mmiri. N'ikwu ya n'ozuzu, mgbe ọdịnaya nke cellulose ether dị obere nke ukwuu, arụmọrụ bụ isi bụ plastik ma ọ bụ mbelata mmiri; mgbe ọdịnaya dị elu, mmetụta nke cellulose ether na-abawanye ngwa ngwa, mmetụta ya nke ikuku na-abanyekwa na-eju afọ. Ya mere, ọ na-egosi dị ka mmetụta nke mmiri mmiri mmiri ma ọ bụ mmụba na mkpa mmiri.
4. Cellulose Ether - Nkwụsị
Cellulose ether ga-eme ka oge ntọala nke simenti ma ọ bụ simenti dị ogologo, ma mee ka mmiri simenti ghara ịdị ogologo, nke bara uru ime ka oge ọrụ nke ihe ndị a gwakọtara ọhụrụ ka mma, melite nguzozi nke simenti na mfu nke simenti ka oge na-aga, mana ọ nwekwara ike ime ka ọganihu owuwu ahụ kwụsị.
Oge ozi: Jun-02-2023