Na mmepụta nke ihe owuwu ụlọ, karịsịa akọrọ ntụ ntụ ntụ.cellulose etherna-arụ ọrụ dị mkpa, karịsịa n'ịmepụta ngwa agha pụrụ iche (mortar modified), ọ bụ akụkụ dị mkpa. Ọrụ dị mkpa nke cellulose ether na-agbaze mmiri n'ime ngwa agha bụ nke kachasị mma iji jide mmiri. Mmetụta njide mmiri nke cellulose ether na-adabere na mmịnye mmiri nke oyi akwa isi, ihe mejupụtara nke ngwa agha ahụ, ọkpụrụkpụ nke akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa akwa, mmiri chọrọ ngwa ngwa, na oge nhazi nke ihe nhazi.
Ọtụtụ ngwa agha masonry na plasta adịghị ejide mmiri nke ọma, na mmiri na slurry ga-ekewa mgbe nkeji ole na ole guzoro. Njide mmiri bụ ọrụ dị mkpa nke methyl cellulose ether, ọ bụkwa arụmọrụ nke ọtụtụ ndị na-emepụta ihe ọkụkụ na-ekpo ọkụ na-ekpo ọkụ, karịsịa ndị nọ na mpaghara ndịda nke nwere okpomọkụ dị elu, na-aṅa ntị. Ihe ndị na-emetụta mmetụta njide mmiri nke akọrọ ntụ ntụ ntụ na-agụnye ọnụ ọgụgụ nke mgbakwunye, viscosity, mma nke ahụ, na okpomọkụ nke gburugburu ebe obibi.
The mmiri njide nkecellulose ethern'onwe ya sitere na solubility na akpịrị ịkpọ nkụ nke cellulose ether n'onwe ya. Dị ka anyị niile maara, ọ bụ ezie na cellulose molecular chain nwere ọnụ ọgụgụ buru ibu nke ukwuu hydratable OH otu, ọ bụghị soluble na mmiri, n'ihi na cellulose Ọdịdị nwere nnukwu ogo nke crystallinity. Ike hydration nke otu hydroxyl naanị ezughị iji kpuchie njikọ njikọ hydrogen siri ike na ndị agha van der Waals n'etiti ụmụ irighiri ihe. Ya mere, ọ na-aza naanị ma ọ naghị agbaze na mmiri. Mgbe a na-ewebata ihe ngbanwe n'ime agbụ molekụla, ọ bụghị naanị ihe mgbakwunye na-emebi yinye hydrogen, kamakwa a na-emebi njikọ interchain hydrogen n'ihi ịgbanye ihe nọchiri anya n'etiti ụdọ ndị dị n'akụkụ. Ka nnukwu ihe nọchiri anya ya, ka ebe dị anya n'etiti ụmụ irighiri ihe. Nke ka ukwuu na anya. Mmetụta dị ukwuu nke ibibi njikọ hydrogen, cellulose ether na-aghọ mmiri na-agbaze mgbe cellulose lattice gbasaa na ngwọta na-abanye, na-eme ka ngwọta dị elu nke viscosity. Mgbe okpomọkụ na-ebili, hydration nke polymer na-ada mbà, a na-achụpụkwa mmiri n'etiti agbụ. Mgbe mmetụta akpịrị ịkpọ nkụ zuru ezu, ụmụ irighiri ihe ndị ahụ na-amalite ịgbakọta, na-akpụ ihe nhazi netwọk akụkụ atọ wee tụgharịa.
N'ikwu okwu n'ozuzu, ka viscosity dị elu, ka mma na-ejide mmiri. Otú ọ dị, ka viscosity dị elu na ịdị elu nke ịdị arọ molecular, mbelata kwekọrọ na solubility ya ga-enwe mmetụta na-adịghị mma na ike na ịrụ ọrụ nke ngwa agha. Ihe dị elu nke viscosity, otú ahụ ka ọ na-apụta ìhè nke ọma mmetụta na ngwa ngwa, ma ọ bụghị kpọmkwem. Nke dị elu nke viscosity, otú ahụ ka ngwa ngwa mmiri ga-adịkwu viscous, ya bụ, n'oge a na-ewu ihe, a na-egosipụta ya dị ka ịrapara na scraper na nnukwu adhesion na mkpụrụ. Mana ọ naghị enye aka ịbawanye ike nhazi nke ngwa agha mmiri n'onwe ya. N'oge a na-ewu ụlọ, arụ ọrụ mgbochi sag abụghị ihe doro anya. N'ụzọ megidere nke ahụ, ụfọdụ viscosity dị ala na nke dị ala mana methyl gbanwerecellulose ethersnwee ọmarịcha arụmọrụ n'ịkwalite ike nhazi nke ngwa agha mmiri.
Oge nzipu: Eprel-25-2024