Redispersible Polymer Powder (RDP) plays lub luag haujlwm tseem ceeb hauv cov khoom siv niaj hnub no, tshwj xeeb tshaj yog nyob rau hauv qhov sib xyaw ntawm tus kheej. Cov tebchaw no, tseem ceeb heev rau kev npaj du thiab txawm tias substrates, tau txais txiaj ntsig zoo los ntawm kev suav nrog RDP.
Kev sib xyaw thiab cov khoom ntawm RDP
RDP yog muab los ntawm cov polymers xws li yas acetate, ethylene, thiab acrylics. Cov txheej txheem cuam tshuam nrog cov tshuaj tsuag kom qhuav cov dej-raws li emulsion los tsim cov hmoov uas tuaj yeem rov rov qab mus rau hauv dej, tsim kom muaj emulsion ruaj khov. Cov khoom tseem ceeb ntawm RDP suav nrog nws lub peev xwm los txhim kho adhesion, yooj, thiab dej tsis kam hauv cov khoom siv.
Chemical Composition: Feem ntau, RDPs yog raws li vinyl acetate-ethylene (VAE) copolymer. Cov polymers no paub txog lawv qhov sib npaug ntawm qhov yooj yim thiab lub zog, ua rau lawv haum rau ntau hom kev siv.
Lub cev muaj zog: RDP feem ntau tshwm sim zoo li cov hmoov dawb. Thaum sib xyaw nrog dej, nws tsim cov latex uas tuaj yeem txhim kho cov khoom ntawm cov cementitious sib tov. Qhov kev muaj peev xwm rov qab mus rau nws daim ntawv emulsion qub yog qhov tseem ceeb rau nws txoj haujlwm hauv nws tus kheej-leveling compounds.
Lub luag haujlwm ntawm RDP hauv Kev Ua Haujlwm Tus Kheej
Self-leveling tebchaw yog cov cementitious sib tov tsim los tsim cov npoo du thiab qib tsis muaj kev ua haujlwm ntau. Kev suav nrog RDP hauv cov kev sib xyaw no coj txog ntau yam kev txhim kho:
Txhim kho Flow thiab Workability: RDP txhim kho cov rheology ntawm qhov sib tov, kom ntseeg tau zoo dua ntws thiab kis tau zoo. Cov cuab yeej no yog qhov tseem ceeb heev rau kev ua tiav qib siab nrog kev siv zog tsawg. Cov khoom siv polymer txo cov kev sib txhuam sab hauv hauv qhov sib tov, cia nws ntws yooj yim dua ntawm cov substrate.
Enhanced Adhesion: Ib lub luag haujlwm tseem ceeb ntawm RDP yog txhawm rau txhim kho qhov adhesion ntawm tus kheej-leveling compound rau ntau yam substrates. Qhov no yog qhov tseem ceeb tshwj xeeb hauv kev ua kom ntseeg tau tias qhov sib xyaw ua ke muaj kev sib raug zoo nrog rau hauv pem teb uas twb muaj lawm, txawm nws yog pob zeb, ntoo, lossis lwm yam khoom siv. Lub polymer hais nkag mus rau hauv lub substrate nto, txhim kho cov neeg kho tshuab interlocking thiab tshuaj bonding.
Flexibility thiab Crack Resistance: Qhov yooj yim muab los ntawm RDP pab ua kom haum rau cov substrate txav thiab thermal expansions, yog li txo qhov kev pheej hmoo ntawm kev tawg. Qhov kev hloov pauv no tshwj xeeb tshaj yog muaj txiaj ntsig zoo nyob rau hauv ib puag ncig uas muaj qhov kub thiab txias hloov los yog txav me ntsis, kom ntseeg tau tias qhov ua tau zoo ntawm cov qib siab.
Kev tuav dej: RDP txhim kho cov dej tuav cov khoom ntawm tus kheej-leveling compound. Qhov no yog qhov tseem ceeb hauv kev tiv thaiv kev poob dej sai uas tuaj yeem ua rau cov dej tsis zoo ntawm cov cement, ua rau cov chaw tsis muaj zog thiab nkig. Txhim kho cov dej tuav kom ntseeg tau tias cov cement kho kom zoo, ua tiav lub zog zoo thiab kav ntev.
Mechanical Strength: Lub xub ntiag ntawm RDP txhim kho tag nrho cov cuab yeej cuab tam ntawm tus kheej-leveling compound. Qhov no suav nrog kev txhim kho tensile thiab compressive zog, uas yog ib qho tseem ceeb rau lub neej ntev thiab kev ntseeg siab ntawm cov tshuaj flooring. Cov zaj duab xis polymer tsim nyob rau hauv lub matrix ua raws li tus neeg sawv cev txhawb nqa, faib cov kev ntxhov siab thiab txhim kho kev ncaj ncees.
Mechanism ntawm Action
Kev ua tau zoo ntawm RDP nyob rau hauv nws tus kheej-leveling compounds tuaj yeem nkag siab los ntawm nws cov txheej txheem ntawm kev ua:
Zaj duab xis tsim: Thaum hydration thiab ziab, RDP particles coalesce los ua ib tug nruam polymer zaj duab xis nyob rau hauv lub cementitious matrix. Cov yeeb yaj kiab no ua raws li kev hloov pauv thiab muaj zog binder uas tuav lub matrix ua ke, txhim kho kev sib koom ua ke tag nrho.
Particle Packing: RDP txhim kho cov ntim ntim ntawm cov khoom nyob rau hauv tus kheej-leveling compound. Qhov no ua rau kom muaj kev sib haum xeeb thiab ntom ntom microstructure, txo qhov porosity thiab nce lub zog.
Interfacial Bonding: Cov saw hlau polymer ntawm RDP cuam tshuam nrog cov khoom siv cement hydration, txhim kho kev sib txuas ntawm cov cementitious Cheebtsam thiab cov khoom sib xyaw. Qhov kev sib txuas ua kom zoo no ua rau muaj kev ua haujlwm zoo dua qub thiab ua haujlwm ntev.
Daim ntawv thov thiab cov txiaj ntsig
Kev koom ua ke ntawm RDP nyob rau hauv tus kheej-leveling compounds pom cov ntawv thov nyob rau hauv ntau yam scenarios:
Renovation Projects: RDP-txhim kho tus kheej-leveling compounds yog qhov zoo tagnrho rau kev kho dua qub thiab tsis sib xws. Lawv muab cov kev daws teeb meem sai thiab muaj txiaj ntsig kom ua tiav qhov chaw du thiab qib tsim nyog rau kev teeb tsa hauv pem teb tom ntej.
Industrial Flooring: Hauv cov chaw muaj kev lag luam uas cov plag tsev raug rau cov khoom hnyav thiab kev tsheb khiav, kev txhim kho lub zog thiab kev ua haujlwm tau zoo los ntawm RDP yog qhov muaj txiaj ntsig tshwj xeeb.
Pem Teb Chaw Nyob: Rau cov ntawv thov nyob hauv tsev, RDP ua kom lub ntsej muag du, tsis muaj qhov tawg uas tuaj yeem ua kom haum rau ntau hom ntaub pua tsev, nrog rau cov vuas, ntaub pua plag, thiab cov plag tsev ntoo.
Underlayments rau Radiant Cua sov: RDP-hloov nws tus kheej-leveling compounds feem ntau yog siv los ua underlayments rau radiant cua sov tshuab. Lawv lub peev xwm los tsim ib qho chaw du thiab qib ua kom muaj kev sib faib hluav taws xob zoo thiab txo qhov kev pheej hmoo ntawm kev puas tsuaj rau cov cua sov.
Environmental thiab Economic kev txiav txim siab
Sustainability: RDP tuaj yeem pab txhawb kev tsim kho kom ruaj khov. Kev txhim kho kev ua tau zoo ntawm tus kheej-leveling tebchaw txhais tau hais tias cov khoom siv tsawg dua yuav tsum tau ua kom tau raws li qhov xav tau ntawm qhov zoo, txo cov khoom siv tag nrho. Tsis tas li ntawd, kev txhim kho lub zog ntawm RDP-txhim kho cov plag tsev tuaj yeem ua rau lub neej ntev dua, txo qhov xav tau kev kho thiab hloov ntau zaus.
Tus Nqi Ua Haujlwm: Thaum RDP tuaj yeem ntxiv rau tus nqi pib ntawm tus kheej-leveling compounds, cov txiaj ntsig mus sij hawm ntev feem ntau tshaj cov nuj nqis ua ntej. Kev txhim kho kev ua tau zoo, txo cov nqi zog vim kev siv yooj yim dua, thiab kev ua neej ntev ntawm cov av hauv av muab cov txiaj ntsig tseem ceeb ntawm kev lag luam.
Redispersible Polymer Powder yog ib qho tseem ceeb ntxiv rau hauv cov khoom sib xyaw ua ke ntawm tus kheej, muab ntau yam txiaj ntsig uas txhim kho kev ua tau zoo thiab ua haujlwm ntev ntawm cov txheej txheem hauv pem teb. Nws lub peev xwm los txhim kho kev ntws, adhesion, yoog raws, thiab lub zog siv tshuab ua rau nws tseem tsis tau muaj nyob rau hauv ob qho tib si hauv tsev thiab kev lag luam. Los ntawm kev nkag siab txog qhov muaj pes tsawg leeg, cov txheej txheem, thiab cov txiaj ntsig ntawm RDP, cov kws tshaj lij kev tsim kho tuaj yeem txaus siab rau nws lub luag haujlwm hauv kev tsim kom muaj txiaj ntsig zoo thiab kav ntev ntawm tus kheej theem. Raws li kev tsim kho kev lag luam txuas ntxiv mus, qhov tseem ceeb ntawm cov ntaub ntawv ua tau zoo xws li RDP tsuas yog nce, tsav kev tsim kho tshiab thiab kev ruaj khov hauv kev tsim kho.
Post lub sij hawm: Jun-03-2024