Re-dispersible polymer hmoov

Re-dispersible polymer hmoov (RDP) yog cov hmoov qhuav qhuav ntawm cov khoom siv hluavtaws uas tuaj yeem yooj yim tov nrog dej los tsim cov polymer dispersion. RDP feem ntau yog siv los ua cov khoom siv ntxiv hauv ntau yam khoom siv, suav nrog cov tshuaj khib nyiab qhuav, cov nplaum nplaum, thiab cov rwb thaiv tsev sab nrauv thiab cov txheej txheem tiav (EIFS), vim nws cov khoom zoo heev, xws li kev txhim kho kev ua haujlwm, adhesion, thiab yooj.

RDP yog tsim los ntawm ntau yam hluavtaws polymers, xws li yas acetate-ethylene (VAE), vinyl acetate-versatile monomer (VeoVa), thiab acrylics. Cov polymers no yog polymerized nyob rau hauv ib qho nruab nrab aqueous los tsim ib tug latex, uas yog ces qhuav thiab av rau hauv ib tug nplua hmoov. Tom qab ntawd cov hmoov tuaj yeem yooj yim dispersed hauv dej los tsim ib qho kev ruaj khov polymer dispersion.

Cov khoom ntawm RDP nyob ntawm seb hom polymer siv, qib ntawm polymerization, particle loj tis, thiab muaj lwm yam additives. Feem ntau, RDP muaj cov dej tsis zoo, ua kom yooj yim, adhesion, thiab sib haum nrog lwm yam khoom siv. Daim ntawv hmoov ntawm RDP kuj tso cai rau kev khaws cia yooj yim, kev thauj mus los, thiab tuav.

Hauv cov khib nyiab qhuav, RDP yog siv los txhim kho kev ua haujlwm, adhesion, thiab yoog raws ntawm mortar. RDP tuaj yeem txhim kho cov dej tuav ntawm lub mortar, uas tso cai rau kev ua haujlwm zoo dua thiab qhib lub sijhawm qhib. Kev txhim kho adhesion muab los ntawm RDP kuj tuaj yeem ua rau muaj zog ntawm cov tshuaj khib thiab cov substrate, uas ua rau muaj kev ruaj khov thiab ntev ntev.

Hauv cov nplais nplaum, RDP yog siv los txhim kho daim ntawv cog lus lub zog thiab hloov pauv ntawm cov nplaum. Kev txhim kho kev sib raug zoo yog muab los ntawm RDP tuaj yeem ua rau muaj kev tiv thaiv rau cov shear thiab tev rog, ua rau muaj zog thiab ruaj khov ntawm cov pobzeb thiab cov substrate. Kev ua kom yooj yim dua los ntawm RDP tuaj yeem pab nqus cov kev ntxhov siab los ntawm kev hloov pauv ntawm qhov kub thiab txias, txo qhov kev pheej hmoo ntawm kev tawg lossis delamination.

Hauv EIFS, RDP yog siv los txhim kho qhov adhesion, yooj, thiab huab cua tsis kam ntawm lub kaw lus. Kev txhim kho adhesion muab los ntawm RDP tuaj yeem ua rau kom muaj zog ntawm cov ntaub ntawv rwb thaiv tsev thiab cov substrate, thaum lub zog ntxiv tuaj yeem pab nqus cov kev ntxhov siab los ntawm thermal expansion thiab contraction. Cov dej tsis kam muab los ntawm RDP kuj tseem tuaj yeem pab tiv thaiv cov dej nkag thiab txo qhov kev pheej hmoo ntawm kev puas tsuaj los ntawm kev khov-thaw mus.

Kev siv RDP hauv cov ntaub ntawv tsim kho muaj ntau qhov zoo. Ua ntej, RDP tuaj yeem txhim kho kev ua haujlwm ntawm cov ntaub ntawv, ua rau muaj kev ruaj khov thiab ua tiav ntev. Qhov thib ob, RDP tuaj yeem txhim kho kev ua haujlwm thiab tuav cov ntaub ntawv, txo qhov kev pheej hmoo ntawm kev ua yuam kev thiab txhim kho cov khoom tsim tau. Thaum kawg, RDP tuaj yeem txhim kho qhov kev ua tau zoo ntawm ib puag ncig ntawm cov ntaub ntawv, xws li txo cov nqi ntawm cov organic sib txuas (VOCs) tawm thaum lub sijhawm thov.

Nyob rau hauv xaus, re-dispersible polymer hmoov (RDP) yog ib tug ntau yam thiab dav siv additive nyob rau hauv kev tsim kho cov ntaub ntawv. RDP tuaj yeem txhim kho qhov ua haujlwm tau zoo, adhesion, thiab yooj yim ntawm cov khoom sib xyaw qhuav, cov nplais nplaum, thiab EIFS, uas ua rau muaj kev ruaj khov thiab ntev ntev. Kev siv RDP hauv cov ntaub ntawv tsim kho muaj ntau qhov zoo, suav nrog kev txhim kho kev ua haujlwm, kev ua haujlwm tau zoo, thiab kev ua haujlwm ib puag ncig.