Cov hmoov polymer uas yaj tau dua (RDP), ua ib qho khoom siv organic tseem ceeb hauv cov mortars qhuav niaj hnub no, nws siv dav hauv ntau yam xws li cov nplaum pobzeb, cov hmoov putty, cov mortars rwb thaiv tsev sab nraud, cov mortars uas nws tus kheej leveling, thiab cov mortars tsis dej vim nws cov khoom sib txuas zoo heev, kev ywj pheej, thiab kev hloov pauv. Yeej, nws yog ib qho hmoov khov ua los ntawm kev tsuag-qhuav ib qho polymer emulsion. Thaum kov dej, nws tuaj yeem rov tawg ua ib qho emulsion ruaj khov, yog li tsim ib zaj duab xis polymer organic tas mus li thaum lub sijhawm ua kom mortar tawv, txhim kho qhov kev ua tau zoo ntawm cov mortar.
1. Lub Tswv Yim Tseem Ceeb ntawm RDP hauv Kev Txhim Kho Kev Ua Haujlwm ntawm Mortar
1.1. Txhim kho lub zog ntawm cov ntawv cog lus
Cov zaj duab xis polymer uas tsim los ntawm RDP tom qab mortar hardening muaj qhov lo rau siab thiab ductility zoo, tsim kom muaj tus choj sib txuas zoo rau ntawm qhov chaw substrate, txhim kho qhov lo ntawm mortar thiab cov ntaub ntawv xws li concrete, bricks, EPS boards, thiab vuas. Lub luag haujlwm ntawm RDP yog qhov tseem ceeb heev rau cov substrates uas tsis nqus dej lossis du.
1.2. Kev Ywj Pheej Zoo Dua thiab Kev Tiv Thaiv Kev Tawg
Cov ntaub ntawv cement ib txwm muaj yog cov khoom tawg yooj yim heev thiab yooj yim tawg vim qhov kub thiab txias hloov pauv thiab cov substrate deformation. Cov polymer hauv RDP disperses rau hauv cov qhov pores mortar, tsim cov qauv network yooj ywm, txo cov khoom siv elastic modulus, thiab txhim kho nws txoj kev tiv thaiv rau deformation, yog li txhim kho qhov kev tiv thaiv kab nrib pleb ntawm mortar.
1.3. Kev Ua Haujlwm Zoo Dua
RDP ua rau cov mortar zoo dua thiab du dua, txhim kho kev ua haujlwm thiab kev siv. Nws qhov kev khaws dej zoo dua thiab lub sijhawm qhib ntev dua ua rau kev tsim kho du dua, ua kom muaj kev ua haujlwm zoo dua thiab ruaj khov zoo.
1.4. Kev Tiv Thaiv Dej thiab Huab Cua Zoo Dua
Cov zaj duab xis polymer muaj cov hydrophobicity zoo heev thiab tiv taus dej, txo cov dej mortar nqus thiab yog li txhim kho kev tiv taus hydration thiab khov-thaw voj voog. Hauv kev siv phab ntsa sab nraud, RDP pab txhim kho kev tiv thaiv huab cua ntawm cov txheej thiab mortars, tswj lawv qhov ruaj khov hauv qab kev raug mob ntev.
2. Cov ntawv thov ntawm Redispersible Polymer (RDP) hauv cov txheej txheem sib txawv ntawm Mortar
2.1. Cov nplaum rau pobzeb
RDP yog ib qho tseem ceeb ntawm cov nplaum rau pobzeb, ua rau nws zoo dua qub rau kev nplaum, tiv thaiv kev plam, thiab yooj ywm. Rau cov pobzeb loj, cov pobzeb uas nqus dej tsawg, lossis cov pobzeb vitrified, cov polymer RDP uas muaj ntau ua rau nws ruaj khov thiab tiv thaiv cov chaw khoob thiab kev sib cais.
2.2. Cov Tshuaj Mortar Rau Sab Nraud Phab Ntsa (EPS/XPS Adhesive, Cov Tshuaj Mortar Rau Kev Ua Kom Tiav)
Hauv cov txheej txheem rwb thaiv tsev, RDP muab qhov yooj ywm thiab lub zog sib txuas uas tsim nyog, ua rau cov mortar lo rau EPS / XPS boards. Nws kuj tseem txhim kho qhov tawg tsis kam thiab cuam tshuam tsis kam ntawm cov txheej tiav, ua kom ntseeg tau tias lub kaw lus rwb thaiv tsev ruaj khov mus sij hawm ntev.
2.3. Cov av nplaum uas tsis ntub dej
RDP tsim ib daim zaj duab xis polymer ntom ntom hauv cov mortar, txo cov capillary porosity thiab txhim kho impermeability. Ua haujlwm ua ke nrog cov khoom cement hydration, nws ua rau muaj kev ywj pheej thiab kev ruaj khov ntawm cov txheej tiv thaiv dej.
2.4. Cov Pob Zeb Uas Ua Rau Nws Tus Kheej Sib Npaug
Hauv cov txheej txheem self-leveling, RDP txhim kho lub zog thaum ntxov, fluidity, thiab cov khoom sib txuas ntawm cov mortar thaum txo cov brittleness, ua rau kev tsim kho pem teb ruaj khov dua thiab muaj zog dua.
2.5. Hmoov Putty
Ntxiv RDP rau hauv cov hmoov putty ua rau muaj kev sib txuas zoo dua, tiv thaiv kev chalking, thiab kev xav xuab zeb, ua rau phab ntsa du thiab zoo nkauj dua thiab tiv thaiv dej thiab ua kom ruaj khov.
2.6. Kho Cov Cug Thiab Cov Neeg Ua Haujlwm Sib Txuas Lus
RDP txhim kho qhov kev nplaum thiab kev tawg ntawm cov khoom kho, ua rau lawv ruaj khov dua thiab txhim khu kev qha hauv kev siv xws li kev kho cov pob zeb qub thiab kev kho interface.
3. Kev Ceev Faj rau Kev Siv Cov Hmoov Polymer Redispersible
Xaiv qhov tsim nyogRDPhom thiab koob tshuaj raws li kev ua haujlwm ntawm lub kaw lus mortar;
Kev sib xyaw nrog cellulose ethers (HPMC/MHEC), starch ethers, thiab lwm yam, tuaj yeem ua kom zoo dua qub rau kev khaws cia dej, kev ua haujlwm tau zoo, thiab kev tiv thaiv sag;
Khaws cia rau hauv qhov chaw qhuav kom tsis txhob muaj dej noo thiab sib sau ua ke;
Xyuas kom meej tias muaj kev sib xyaw ua ke thaum lub sijhawm sib tov kom ua tiav kev ua tau zoo ruaj khov.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-01-2025