Cellulose ether nwere mmetụta azụ azụ na ngwa ngwa. Site na mmụba nke usoro onunu ogwu nke cellulose ether, oge nhazi nke ngwa agha na-agbatịkwu. Mmetụta azụ azụ nke cellulose ether na tapawa ciment na-adabere n'ogo nke nnọchi nke otu alkyl, ebe ọ na-enwechaghị ihe jikọrọ ya 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 elu nke usoro onunu ogwu nke cellulose ether, ka o doro anya na mmetụta igbu oge nke oyi akwa ihe nkiri dị mgbagwoju anya na mmalite hydration nke ciment, ya mere mmetụta nkwụsịtụ na-apụtakwa ìhè karị.
Ike bụ otu n'ime ihe nleba anya dị mkpa maka ọgwụgwọ nke ihe simenti dabeere na ciment na ngwakọta. Mgbe usoro onunu ogwu nke cellulose ether na-abawanye, ike mkpakọ na ike mgbanwe nke ngwa agha ga-ebelata. A na-emeziwanye ike njikọ ike nke ciment mortar na cellulose ether; A na-ebelata ike mgbanwe na mkpakọ nke ụrọ ciment, ma ka usoro ọgwụgwọ dị ukwuu, na-ebelata ike;
Mgbe ịgwakọta hydroxypropyl methyl cellulose ether, na mmụba nke usoro onunu ogwu, ike mgbanwe ike nke ciment ngwa agha na-ebu ụzọ na-abawanye wee na-ebelata, na mkpakọ ike ji nwayọọ nwayọọ na-ebelata. Ekwesịrị ịchịkwa usoro ọgwụgwọ kachasị mma na 0.1%.
Cellulose ether nwere mmetụta dị ukwuu na arụ ọrụ njikọ nke ngwa agha. Cellulose ether na-emepụta ihe nkiri polymer nwere mmetụta mkpuchi n'etiti cement hydration particles na usoro mmiri mmiri mmiri, nke na-akwalite mmiri karịa na fim polymer n'èzí ciment ahụ, nke na-eme ka hydration zuru oke nke ciment, si otú a na-eme ka ike nke njikọ dịkwuo mma. nke tapawa 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. Ya mere, ọ na-eme ka ngwa agha ahụ nwee ike njikọ siri ike.
Oge nzipu: Jun-02-2023