Redispersible looj cov hmoov yog qhov tshwj xeeb emulsion thiab polymer ua kom qhuav nrog vinyl acetate-ethylene copolymer raws li cov khoom tseem ceeb. Tom qab ib feem ntawm cov dej yaj, cov polymer hais ua cov yeeb yaj kiab polymer los ntawm agglomeration, uas ua raws li phau ntawv. Thaum Redispersible looj hmoov yog siv ua ke nrog inorganic gelling zaub mov xws li MAAs, nws tuaj yeem hloov kho lub tshuaj khib. Lub luag haujlwm tseem ceeb ntawm redispersible looj hmoov yog raws li hauv qab no.
(1) Ua kom txhim kho txoj hlua khi nyiaj, lub zog tensile thiab khoov rau lub zog.
Redispersible looj hmoov tuaj yeem txhim kho cov nyiaj txhuav zog ntawm cug. Qhov ntau dua tus nqi ntxiv, muaj ntau dua nqa. Kev ua kom muaj zog muaj zog tuaj yeem cuam tshuam kev shrinkage rau qee qhov, thiab tib lub sijhawm tso tawm, yog li lub zog sib faib yog qhov tseem ceeb heev rau kev txhim kho tawm tsam. Cov kev tshawb fawb tau pom tias lub synergistic nyhuv ntawm cellulose cuam tshuam ether thiab polymer hmoov pab txhim kho txoj hlua khi ntawm xis.
(2) Txo cov modastic loj heev ntawm cov tshuaj khib, yog li ntawd lub plhaw cream muaj qee qhov kev hloov zuj zus.
Elastic modulus ntawm redispersible looj hmoov yog tsawg, 0.001-10gpa; Thaum lub elastic modulus ntawm cement cug siab dua, 10-30gpa, yog li cov colle elastic modulus yuav txo qis nrog ntxiv ntawm polymer hmoov. Txawm li cas los xij, hom thiab tus nqi ntawm polymer hmoov kuj muaj cov nyhuv ntawm cov modulus ntawm elasticity. Feem ntau, raws li qhov sib piv ntawm polymer rau Caas nce ntxiv, cov qauv hloov kho ntawm elasticity thiab deformivity nce.
(3) Txhim kho cov dej tsis kam, alkali tsis kam, puas cuam tshuam thiab cuam tshuam tsis kam.
Lub network membrane tsim los ntawm cov qhov colle ntawm lub cev, thiab yog li txhim kho lub cev tsis muaj zog, cov dej tsis kam thiab khov kho ntawm cov xis ntshiab. Cov nyhuv no nce nrog nce polymer-Maas piv. Kev txhim kho ntawm kev coj tawm tsam cuam tshuam nrog hom polymer thiab piv ntawm polymer kom xis mas. Feem ntau, hnav tsis kam txhim kho raws li qhov piv ntawm polymer rau Caent nce.
(4) txhim kho cov fluidity thiab kev ua haujlwm ntawm cug.
(5) Txhim kho cov dej ceev ceev ntawm cug thiab txo cov dej dej evaporation.
Cov polymer emulsion tsim los ntawm cov refispersible polymer hmoov nyob rau hauv cov dej cug, thiab txuas ntxiv cov organic zaj duab xis yog tsim nyob rau hauv cug tshuaj ntsuab tom qab solidification. Qhov yeeb yaj kiab organic tuaj yeem tiv thaiv kev tsiv teb tsaws chaw, yog li txo cov dej tsis huv hauv cov tshuaj khib thiab ua lub luag haujlwm hauv dej rov qab.
(6) txo qhov tshwm sim tshwm sim
Elongation thiab tawv ntawm polymer hloov tshiab cug kab laum muaj ntau dua zoo dua li colle cug cugas. Lub flexural kev ua tau zoo tshaj 2 zaug uas ntawm cort cort cort; Qhov cuam tshuam nyuaj zuj zus ntxiv nce nrog cov polymer coement piv. Nrog rau qhov nce ntawm tus nqi ntawm polymer hmoov ntxiv, cov nyhuv hloov kho tau yooj yim ntawm cov kab nrib pleb, thiab ncua sij hawm nws muaj kev ntxhov siab zoo dispersion nyhuv.
Ncua Sij Hawm: Jun-20-2023