Cellulose etherna-enye ngwa agha mmiri mmiri na viscosity dị oke mma, nwere ike ịbawanye ike nke ngwa ngwa mmiri na ahịhịa ahịhịa, melite arụmọrụ mgbochi sag nke ngwa agha, nke a na-ejikarị na akwa akwa akwa, usoro mkpuchi mpụga na ngwa agha njikọ brik. The ndim mmetụta nke cellulose ether nwekwara ike dịkwuo uniformity na mgbochi mgbasa ikike nke ọhụrụ ciment dabeere ihe, iji gbochie stratification, segregation na ọbara ọgbụgba nke ngwa agha na ihe, nwere ike ji mee ihe na eriri ihe, n'okpuru mmiri ihe na onwe-compacting ihe.
Cellulose etherna-eme ka viscosity nke ihe ndị dabeere na ciment si na viscosity nke cellulose ether ngwọta. Na-ejikarị "viscosity" metric a iji nyochaa cellulose ether ngwọta viscosity, viscosity nke cellulose ether n'ozuzu na-ezo aka na ụfọdụ ntinye uche (2%) nke cellulose ether ngwọta, okpomọkụ (20 ℃) na shiee ọnụego (ma ọ bụ bugharia ọsọ, dị ka 20). Ọnọdụ RPM, yana ndokwa nke ngwa ihe, dị ka ụkpụrụ viscosity tụrụ atụgharịrị. Viscosity bụ ihe dị mkpa oke nke na-enyocha arụmọrụ nke cellulose ether na cellulose ether, na elu viscosity nke ngwọta, mma viscosity nke ciment isi ihe, na viscosity nke isi ihe nwere ike, sag iguzogide na iguzogide ike dispersion ike, ma ọ bụrụ na viscosity bụ oke ibu, nwere ike imetụta ciment isi ihe agagharị na maneuverability (dị ka ewu plasta ngwa agha nyagide. plasta). Ya mere, viscosity nke cellulose ether eji na ngwa agha agwakọta akọrọ na-abụkarị 15,000 ~ 60,000 Mpa. s-1, na viscosity nke cellulose ether chọrọ ka ọ dị ala maka ngwa agha na-edozi onwe ya na compactconcrete onwe ya na ihe dị elu chọrọ. Tụkwasị na nke ahụ, mmetụta siri ike nke cellulose ether ga-eme ka mmiri na-achọ ihe ndị dabeere na ciment, si otú a na-amụba mmepụta nke ngwa agha. Viscosity nke cellulose ether ngwọta na-adabere n'ịdị arọ nke molekụla (ma ọ bụ ogo nke polymerization) na ntinye nke ether cellulose, okpomọkụ ngwọta, ọnụ ọgụgụ shear, na usoro ule. Nke dị elu nke ogo polymerization nke cellulose ether, nke ukwuu na arọ molekụla, nke dị elu nke viscosity nke ngwọta mmiri ya; Ihe dị elu nke usoro onunu ogwu (ma ọ bụ ịta ahụhụ) nke cellulose ether, nke dị elu nke viscosity nke ngwọta mmiri ya, ma na-eji ya kwesịrị ịṅa ntị na nhọrọ nke usoro ọgwụgwọ kwesịrị ekwesị, ka ọ ghara ịgwakọta oke elu, na-emetụta arụmọrụ nke ngwa agha na ihe; Dị ka ọtụtụ mmiri mmiri, viscosity nke cellulose ether ngwọta ga-ebelata na mmụba nke okpomọkụ, na elu ntinye nke cellulose ether, mmetụta nke okpomọkụ ka ukwuu; Ihe ngwọta cellulose ether na-abụkarị ahụ pseudoplastic nwere ihe onwunwe nke ncha. Ọnụ ọgụgụ dị elu nke shear, na-ebelata viscosity.
Ya mere, njikọ nke ngwa agha ga-ebelata site na ike mpụga, bụ nke na-eme ka a na-ekpocha ihe nkedo nke ngwa agha, na-eme ka ngwa agha nwee ike ịrụ ọrụ nke ọma na njikọta. Otú ọ dị, ngwọta cellulose ether ga-egosi njirimara mmiri mmiri Newtonian mgbe ntinye uche dị ntakịrị na viscosity dị ntakịrị. Mgbe ntinye uche na-abawanye, ihe ngwọta na-eji nwayọọ nwayọọ na-enye njirimara mmiri mmiri pseudoplastic, na elu ntinye uche, otú ahụ ka ọ na-apụta ìhè nke pseudoplastic.
Oge nzipu: Jun-14-2022