Hmoov polymer uas yaj tau dua (RDP)yog ib hom hmoov polymer ntxiv uas ua los ntawm cov polymer emulsion los ntawm kev tsuag kom qhuav. Nws lub ntsiab lus tseem ceeb yog nws lub peev xwm rov ua dua rau hauv cov polymer emulsion ruaj khov thaum kov dej, yog li ua lub luag haujlwm hloov kho zoo ib yam li cov kua emulsion hauv ntau yam kev sib xyaw ua ke qhuav. Kev qhia txog RDP tau txhim kho qhov ua haujlwm tau zoo, kev nplaum, thiab kev ruaj khov ntawm cov ntaub ntawv tsim kho, ua rau nws yog ib qho tseem ceeb hauv cov khoom siv niaj hnub no.
1.Hais txog cov yam ntxwv ntawm kev ua tau zoo, RDP muaj kev tawg ua dua tshiab zoo heev thiab cov yam ntxwv ua zaj duab xis. Thaum do nrog dej, RDP hmoov tawg sai sai los ua cov khoom sib npaug zoo, thiab thaum lub sijhawm ziab, nws tsim cov zaj duab xis polymer uas sib txuas thiab ntom. Cov zaj duab xis polymer no ua rau cov khoom sib xyaw ua ke tsis sib xws rau ntawm qhov chaw substrate, ua kom cov khoom siv muaj zog thiab yooj ywm. Cov txheej zaj duab xis kuj muaj qee qib ntawm elasticity, nqus tau qhov sib txawv ntawm kev ntxhov siab ntawm cov txheej hauv paus thiab cov txheej sab saud, tiv thaiv kev tawg thiab poob.
2.RDP tuaj yeem txhim kho qhov ua haujlwm ntawm cov mortar. Ntxiv cov RDP kom tsim nyog yuav ua rau cov mortar khaws dej, ua kom du, thiab nplua, ua rau daim ntawv thov du thiab sib npaug dua thaum txo cov dej ntws thiab cov khoom tawg. Ntxiv mus, RDP txhim kho cov mortar cov khoom tiv thaiv kev poob thiab tiv thaiv hmoov, ua rau daim ntawv thov tuab ruaj khov dua. Rau cov nplaum pobzeb, RDP ua kom cov pobzeb thiab cov substrate ruaj khov, ua kom ntseeg tau tias kev nplaum ruaj khov mus sij hawm ntev.
3.Hais txog kev ruaj khov, RDP ua rau pom kev tiv thaiv kev tawg zoo heev, tiv thaiv kev khov-thaw, thiab tiv thaiv huab cua. Cov zaj duab xis polymer ua haujlwm ua ib qho kev thaiv rau cov dej noo thiab cov pa roj, txo qhov nkag ntawm cov dej noo sab nraud thiab yog li qeeb qeeb kev laus ntawm cov mortar. Txawm tias nyob rau hauv lub voj voog kub thiab txias lossis nyob rau hauv qhov chaw noo noo, cov ntaub ntawv hloov kho RDP tseem muaj zog thiab lo rau, uas yog qhov tseem ceeb rau cov kab ke rwb thaiv tsev phab ntsa sab nraud thiab cov mortar kho.
4.Hauv kev siv tshuaj lom neeg, RDP feem ntau yog cov copolymer ntawm ntau hom monomers, xws li vinyl acetate-ethylene (VAE), acrylates, thiab styrene-butadiene. Cov polymers sib txawv txiav txim siab qhov sib npaug ntawm kev ywj pheej, kev tiv thaiv dej, thiab kev nplaum. VAE-based RDPs yog cov siv dav tshaj plaws vim lawv qhov kev ua tau zoo heev. Acrylate-based RDPs yog lub npe nrov rau lawv qhov kev tiv thaiv huab cua zoo heev thiab kev ywj pheej, ua rau lawv haum rau cov ntaub ntawv phab ntsa sab nraud siab. Styrene-butadiene-based RDPs feem ntau siv rau hauv cov kab ke uas xav tau kev ywj pheej siab thiab kev tiv thaiv kev sib txhuam.
5.Hauv kev siv ua haujlwm, RDPs siv dav hauv cov qauv xws li cov nplaum pobzeb, cov txheej txheem rwb thaiv tsev sab nraud (EIFS), cov nplaum uas ua rau nws tus kheej, cov nplaum kho, cov nplaum plaster, cov nplaum tiv thaiv dej, thiab cov neeg sawv cev sib txuas. Piv txwv li, hauv cov nplaum pobzeb, RDPs txhim kho ob qho tib si qhuav thiab ntub dej sib txuas lub zog thiab cov khoom tiv thaiv kev plam; hauv cov nplaum rwb thaiv tsev, lawv txhim kho lub kaw lus qhov yooj ywm thiab kev tiv thaiv tawg; hauv cov nplaum uas ua rau nws tus kheej, RDPs txhim kho kev ntws thiab txo cov hmoov; thiab hauv cov nplaum tiv thaiv dej, lawv txhim kho kev tsis nkag thiab kev ntev, txhawb nqa lawv cov khoom tiv thaiv.
6.Los ntawm nws cov khoom zoo heev polymer zaj duab xis-tsim cov khoom thiab synergistic nyhuv nrog inorganic substrates,RDPtxhim kho qhov ua tau zoo ntawm cov txheej txheem sib xyaw qhuav. Nws tsis yog tsuas yog ua kom zoo dua qhov kev paub txog kev tsim kho xwb tab sis kuj muab kev ruaj khov thiab kev hloov pauv rau cov ntaub ntawv, ua rau nws yog qhov tseem ceeb rau kev ua tiav kev ua tau zoo thiab kev ruaj khov hauv cov ntaub ntawv tsim kho niaj hnub. Nrog rau kev txhim kho tas mus li ntawm cov ntaub ntawv tsim kho ntsuab thiab cov txheej txheem sib xyaw qhuav ua haujlwm siab, RDP kev tsim kho tshiab thiab daim ntawv thov yuav txuas ntxiv nthuav dav, ua qhov kev taw qhia tseem ceeb rau cov ntaub ntawv tsim kho yav tom ntej.
Lub sijhawm tshaj tawm: Lub Kaum Hli-17-2025