Redispersible polymer hmoovyog ib qho dawb-flowing polymer dawb hmoov uas tuaj yeem yooj yim rov emulsified thiab dispersed nyob rau hauv dej los tsim ib tug ruaj khov emulsion. Nws tuaj yeem sib xyaw nrog lwm cov ntaub ntawv hmoov xws li cov cement, xuab zeb, sib xyaw ua ke, thiab lwm yam hauv lub Hoobkas tsim khoom raws li ib qho piv txwv hauv lub xeev qhuav kom tau txais cov khoom zoo thiab siv tau yooj yim cement qhuav-siv mortar, uas tuaj yeem txo qhov kev tsim kho ntawm qhov chaw. Kev ua yuam kev thiab tsis yooj yim thaum sib tov thiab ntsuas nrog emulsion.
Rau lub luag haujlwm ntawm redispersible polymer hmoov:
1. Txhim kho cov nplaum nplaum thiab cohesion
Hauv cov khoom siv cement qhuav mortar, nws yog qhov tsim nyog yuav tsum tau ntxiv cov hmoov polymer dispersible. Nws yog qhov pom tseeb heev los txhim kho kev sib raug zoo thiab kev sib koom ua ke ntawm cov khoom. Qhov no yog vim kev nkag mus ntawm cov khoom polymer rau hauv qhov pores thiab capillaries ntawm cov cement matrix, thiab tsim kom muaj zog cohesive nrog cov cement tom qab hydration. Vim qhov adhesion zoo heev ntawm polymer resin nws tus kheej, nws tuaj yeem txhim kho qhov adhesion ntawm cement mortar khoom rau substrates, tshwj xeeb tshaj yog cov inorganic binders xws li cov cement yog khi rau cov organic substrates xws li ntoo, fiber ntau, PVC thiab EPS. Kev txhim kho ntawm kev ua haujlwm tsis zoo muaj qhov pom tseeb dua.
2. Txhim kho khoov thiab tensile kuj
Nyob rau hauv lub pob txha pob txha tsim los ntawm hydration ntawm cement mortar, lub polymer zaj duab xis yog elastic thiab tawv. Nyob nruab nrab ntawm cov cement mortar hais, nws ua haujlwm zoo li lub zog sib koom ua ke, uas tuaj yeem tiv taus siab deformation loads thiab txo qhov kev ntxhov siab, ua rau Tensile thiab khoov kuj zoo dua.
3. Txhim kho qhov cuam tshuam
Redispersible polymer hmoov, thermoplastic cob. Nws yog ib tug mos mos zaj duab xis coated rau ntawm qhov chaw ntawm lub mortar hais, uas muaj peev xwm nqus tau cov kev cuam tshuam ntawm sab nraud quab yuam thiab so kom txaus yam tsis muaj kev tawg, yog li txhim kho qhov kev cuam tshuam ntawm mortar.
4, txhim kho hydrophobicity thiab txo qhov nqus dej
Ntxiv dispersible polymer hmoov tuaj yeem txhim kho microstructure ntawm cement mortar. Nws cov polymer tsim ib qho kev sib txuas tsis tau hauv cov txheej txheem ntawm cov cement hydration, kaw cov capillary hauv cov cement gel, thaiv kev nqus dej, tiv thaiv kev nkag mus ntawm cov dej, yog li txhim kho cov impermeability.
5. Txhim kho hnav tsis kam thiab ua haujlwm ntev
Qhov sib ntxiv ntawm cov hmoov polymer dispersible tuaj yeem ua rau kom muaj kev sib raug zoo ntawm cov cement mortar hais thiab cov zaj duab xis polymer. Kev txhim kho ntawm lub zog cohesive sib raug zoo txhim kho lub peev xwm ntawm cov tshuaj khib nyiab kom tiv taus kev ntxhov siab, kom tus nqi hnav raug txo, kev hnav tsis kam yog txhim kho, thiab kev pab cuam lub neej ntawm lub mortar ntev.
6. Txhim kho khov-thaw stability thiab zoo tiv thaiv cov khoom tawg
Redispersible polymer hmoov, cov yas ntawm nws cov thermoplastic resin, tuaj yeem kov yeej qhov kev puas tsuaj ntawm thermal expansion thiab contraction los ntawm qhov kub thiab txias hloov ntawm cov ntaub ntawv cement mortar. Kev kov yeej qhov tsis txaus ntawm cov cement mortar yooj yim nrog loj kom qhuav shrinkage deformation thiab yooj yim tawg, nws tuaj yeem ua rau cov khoom hloov tau yooj yim, yog li txhim kho cov khoom siv mus ntev.
Post lub sij hawm: Oct-28-2022