Ngwa agha na-ebuli onwe ya nwere ike ịdabere n'ịdị arọ nke ya iji mepụta ntọala dị larịị, dị nro na nke siri ike na mkpụrụ maka ịtọ ma ọ bụ jikọta ihe ndị ọzọ, ma n'otu oge ahụ ọ nwere ike ịrụ ọrụ dị ukwuu na nke ọma. Ya mere, mmiri dị elu bụ akụkụ dị oke mkpa nke ngwa agha na-ebuli onwe ya elu. Tụkwasị na nke ahụ, ọ ghaghị inwe ụfọdụ njigide mmiri na ike njikọ, ọ dịghị ihe dị iche iche nke mmiri, ma nwee àgwà nke mkpuchi okpomọkụ na elu okpomọkụ dị ala.
N'ozuzu, ngwa agha na-ebuli onwe ya na-achọ ezigbo mmiri mmiri, ma mmiri nke ezigbo ciment mado na-abụkarị naanị 10-300px; cellulose ether bụ isi ihe mgbakwunye nke ngwa agha a na-agwakọta dị njikere, ọ bụ ezie na ego mgbakwunye dị nnọọ ala, ọ nwere ike ime ka arụmọrụ Mortar dịkwuo mma, ọ nwere ike imeziwanye ihe na-agbanwe agbanwe, arụ ọrụ na-arụ ọrụ, njikọ njikọ na njigide mmiri nke ngwa agha. Ọ na-arụ ọrụ dị oke mkpa n'ọhịa nke ngwa ngwa agwakọta dị njikere.
1. Fluidity: Cellulose ether nwere mmetụta dị mkpa na njide mmiri, nkwụsi ike na ịrụ ọrụ nke mgbidi nke onwe ya. Karịsịa dị ka ngwa agha na-ebuli onwe ya elu, mmiri mmiri bụ otu n'ime ihe ndị na-egosi maka ịlele arụmọrụ nke onwe. N'okpuru nhazi nke ijide n'aka nhazi nkịtị nke ngwa agha ahụ, enwere ike gbanwee mmiri nke ngwa agha ahụ site n'ịgbanwe ọnụọgụ cellulose ether. Otú ọ dị, ọ bụrụ na ego ahụ dị oke elu, a ga-ebelata mmiri mmiri nke ngwa agha ahụ, ya mere a ga-achịkwa ọnụ ọgụgụ cellulose ether HPMC n'ime oke ezi uche.
2. Njide mmiri: Njide mmiri nke ngwa agha bụ ihe dị mkpa na-egosi nkwụsi ike nke ihe dị n'ime nke ciment ciment a gwakọtara ọhụrụ. Iji mezuo mmeghachi omume hydration nke ihe gel, ihe ezi uche dị na ya nke cellulose ether nwere ike ịnọgide na-enwe mmiri na ngwa ngwa ruo ogologo oge. N'ikwu okwu n'ozuzu, ọnụ ọgụgụ njide mmiri nke slurry na-abawanye site na mmụba nke cellulose ether ọdịnaya. Mmetụta njide mmiri nke cellulose ether HPMC nwere ike igbochi mkpụrụ ahụ ka ọ ghara ịmịkọrọ mmiri dị ukwuu ngwa ngwa, ma gbochie evaporation nke mmiri, iji hụ na ebe slurry na-enye mmiri zuru oke maka hydration ciment. Na mgbakwunye, viscosity nke cellulose ether nwekwara mmetụta dị ukwuu na njide mmiri nke ngwa agha. Nke dị elu nke viscosity, ka mma na-ejigide mmiri. N'ozuzu, cellulose ether HPMC nwere viscosity nke 400mpa.s na-ejikarị eme ihe na ngwa agha na-edozi onwe ya, nke nwere ike imeziwanye arụmọrụ nke ngwa agha ahụ ma mee ka ọnụ ọgụgụ nke ngwa agha dịkwuo elu.
3. Nhazi oge: Cellulose ether nwere ụfọdụ retarding mmetụta na ngwa agha. Site na mmụba nke ọdịnaya cellulose ether, nhazi oge nke ngwa agha na-agbatịkwu. Mmetụta azụ azụ nke cellulose ether HPMC na tapawa ciment na-adabere n'ogo nke nnọchi nke otu alkyl, yana enwechaghị mmekọrịta na ịdị arọ ya. Ka ogo nke nnọchi alkyl dị ntakịrị, ka ọdịnaya hydroxyl na-ebuwanye ibu, na-apụta ìhè karịa mmetụta nkwụghachi azụ. Na ọdịnaya nke cellulose ether dị elu, nke a na-apụta ìhè karịa mmetụta igbu oge nke oyi akwa ihe nkiri dị mgbagwoju anya na mmalite hydration nke ciment, ya mere mmetụta nkwụsịtụ na-apụtakwa ìhè karị.
4. Ike na-agbanwe agbanwe na ike mkpakọ: Ọtụtụ mgbe, ike bụ otu n'ime ihe nyocha nyocha dị mkpa maka ọgwụgwọ nke ihe ciment dabeere na ciment na ngwakọta. Ike mkpakọ na ike mgbanwe nke ngwa agha ga-ebelata site na mmụba nke cellulose ether ọdịnaya HPMC.
5. ike bonding: cellulose ether HPMC nwere nnukwu mmetụta na bonding arụmọrụ nke ngwa agha. Cellulose ether na-emepụta ihe nkiri polymer nwere mmetụta akara n'etiti cement hydration particles na mmiri mmiri usoro usoro, nke na-akwalite ọzọ mmiri na polymer film n'èzí ciment ahụ, nke na-eme ka hydration zuru oke nke ciment, si otú ahụ na-eme ka njikọ ahụ dịkwuo mma. ike nke mado mgbe hardening. N'otu oge ahụ, ihe kwesịrị ekwesị nke cellulose ether na-eme ka plasticity na mgbanwe nke ngwa agha ahụ dịkwuo mma, na-ebelata ike nke mpaghara mgbanwe n'etiti ngwa agha na ihe ntanetị, ma na-ebelata ikike mmịfe n'etiti oghere. Ruo n'ókè ụfọdụ, a na-eme ka mmetụta njikọ dị n'etiti ngwa agha na mkpụrụ osisi ahụ dịkwuo mma. Tụkwasị na nke ahụ, n'ihi ọnụnọ cellulose ether na tapawa ciment, a na-emepụta mpaghara mgbanwe mgbanwe pụrụ iche na oyi akwa interface n'etiti ngwongwo ngwa ngwa na ngwaahịa hydration. Nke a interface oyi akwa na-eme ka interface mgbanwe mpaghara ọzọ mgbanwe na obere isiike, otú , nke mere na ngwa agha nwere ike nkekọ ike.
Oge nzipu: Feb-27-2023