Redispersible Polymer Powders (RDP) tau dhau los ua qhov tseem ceeb hauv kev tsim kho kev lag luam, tshwj xeeb tshaj yog nyob rau hauv mortar binder pob zeb sib tov. Lawv kev koom ua ke coj los ntawm ntau cov txiaj ntsig uas txhim kho kev ua tau zoo thiab kav ntev ntawm cov pob zeb.
Chemical Properties ntawm RDP
RDPs yog tsim los ntawm cov tshuaj tsuag-qhuav ntawm polymer emulsions, ua rau cov hmoov zoo uas tuaj yeem yooj yim redispersed hauv dej. Cov khoom siv polymers feem ntau suav nrog vinyl acetate-ethylene (VAE), vinyl acetate copolymer, thiab acrylic copolymer. Cov polymers no raug xaiv rau lawv cov khoom nplaum, yooj yim, thiab muaj peev xwm txhim kho ntau yam ntawm lub cev ntawm mortar thiab pob zeb.
Thaum sib tov nrog dej, RDPs rov qab mus rau lawv cov qub polymer lub xeev, tsim ib zaj duab xis polymer nyob rau hauv lub pob zeb matrix. Cov yeeb yaj kiab no nthuav tawm ntau yam khoom muaj txiaj ntsig, xws li txhim kho adhesion, yoog raws, thiab tiv thaiv ib puag ncig yam. Cov tshuaj lom neeg muaj pes tsawg leeg ntawm RDPs tso cai rau lawv sib cuam tshuam zoo nrog cov ntaub ntawv cementitious, txhim kho ob qho tib si tshiab thiab hardened xeev ntawm mortar thiab pob zeb.
Cov txiaj ntsig ntawm RDP hauv Mortar Binder Concrete Mixtures
Txhim kho kev ua haujlwm:
RDPs txhim khu kev ua haujlwm ntawm mortar thiab pob zeb. Cov khoom siv polymer txo cov kev sib txhuam sab hauv ntawm cov khoom sib xyaw thiab cov ntawv khi, ua kom cov khoom sib xyaw yooj yim sib xyaw, thauj, thiab siv. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv complex lossis intricate kev tsim kho tej yaam num uas yooj yim ntawm daim ntawv thov tseem ceeb heev.
Enhanced Adhesion:
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm RDP yog nws lub peev xwm los txhim kho qhov adhesion ntawm mortar rau ntau yam substrates. Qhov no yog qhov tseem ceeb tshwj xeeb hauv cov ntawv thov xws li cov nplais nplaum, kho cov mortars, thiab cov txheej txheem thermal rwb thaiv tsev sab nraud. Cov yeeb yaj kiab polymer tsim los ntawm RDP ua rau thaj chaw sib tiv tauj thiab kev sib txuas lub zog ntawm cov mortar thiab substrate.
Nce Flexibility thiab Deformation Resistance:
Cov pob zeb thiab cov khib nyiab sib xyaw uas muaj RDP tuaj yeem txhim kho kev yooj yim thiab deformation tsis kam. Polymer zaj duab xis nyob rau hauv lub pob zeb matrix muab ib tug degree ntawm saj zawg zog uas pab cov khoom tiv taus kev nyuaj siab thiab strain yam tsis muaj cracking. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas raug thermal expansion, seismic kev ua si, los yog mechanical vibrations.
Water Resistance thiab Durability:
Kev suav nrog RDP txhim kho cov dej tsis kam ntawm mortar thiab pob zeb. Cov yeeb yaj kiab polymer ua raws li kev thaiv, txo cov kev nkag mus ntawm cov dej thiab cov khoom tsis zoo xws li chlorides thiab sulfates. Cov cuab yeej no yog qhov tseem ceeb rau cov qauv uas raug huab cua hnyav los yog ib puag ncig tshuaj lom neeg, vim nws txuas ntxiv lub neej ntev thiab ua haujlwm ntev ntawm cov pob zeb.
Txhim kho Mechanical Properties:
RDPs pab txhawb rau tag nrho cov neeg kho tshuab lub zog ntawm pob zeb. Lawv txhim kho tensile thiab flexural zog, uas yog ib qho tseem ceeb rau cov qauv kev ncaj ncees ntawm cov pob zeb. Qhov kev txhim kho no yog vim muaj kev ntxhov siab zoo dua nyob rau hauv cov qhob matrix uas yooj yim los ntawm lub network polymer.
Shrinkage txo:
mortar thiab pob zeb sib tov nrog RDP nthuav tawm txo qis thiab tawg. Cov khoom siv polymer pab tswj cov shrinkage uas tshwm sim thaum lub sij hawm ziab los ntawm kev faib cov kev ntxhov siab ntau sib npaug ntawm cov khoom. Qhov no ua rau muaj cov kab nrib pleb tsawg thiab ib qho kev ruaj ntseg tag nrho.
Kev cuam tshuam rau kev ua tau zoo ntawm pob zeb
Kev suav nrog RDP hauv mortar binder pob zeb sib xyaw ua ke tau hloov pauv cov yam ntxwv ntawm cov pob zeb ua haujlwm, ua kom muaj ntau yam thiab ruaj khov. Lub hauv paus ntawm kev cuam tshuam muaj xws li:
Longevity thiab Maintenance:
Cov qauv tsim nrog RDP-txhim kho cov pob zeb zoo li yuav muaj kev pabcuam ntev dua thiab xav tau kev saib xyuas tsawg dua. Kev txhim kho kev tiv thaiv dej thiab ib puag ncig aggressors txhais tau hais tias cov pob zeb tuav nws txoj kev ncaj ncees rau lub sijhawm ntev, txo qhov zaus thiab nqi kho.
Environmental thiab Economic Benefits:
Los ntawm kev ncua lub neej ntawm cov vaj tse pob zeb, RDPs pab txhawb kev ruaj khov hauv kev tsim kho. Tsawg dua kev kho thiab hloov pauv txhais tau tias txo qis ntawm cov khoom siv thiab lub zog dhau lub neej voj voog ntawm cov qauv. Tsis tas li ntawd, kev txhim kho kev ua haujlwm tau zoo thiab lub sijhawm ua ntawv thov sai tuaj yeem txo cov nqi zog thiab sijhawm tsim kho.
Aesthetic Quality:
RDPs pab ua kom tiav smoother tiav thiab zoo dua nto zoo hauv pob zeb. Qhov no yog qhov tseem ceeb tshwj xeeb hauv kev siv architectural qhov twg kev zoo nkauj yog qhov tseem ceeb raws li kev ua haujlwm ntawm cov qauv. Lub peev xwm los tsim cov tawg-dawb, du nto txhim kho qhov pom kev pom ntawm cov qauv tiav.
Cov ntawv thov tshwj xeeb:
Qhov ntau yam ntawm RDP-txhim kho pob zeb ua rau nws tsim nyog rau cov ntawv tshwj xeeb xws li kev kho kom zoo, cov ntawv nyias nyias, thiab cov geometries nyuaj. Nws cov khoom ua kom zoo dua qub thiab hloov tau yooj yim tso cai rau kev tsim kho tshiab thiab cov kev daws teeb meem uas tsis tuaj yeem ua tau nrog cov tsoos pob zeb sib tov.
Kev Tshawb Fawb Txog Kev Tshawb Fawb thiab Kev Siv Ua Haujlwm
Txhawm rau kom nkag siab txog qhov cuam tshuam ntawm RDP hauv mortar binder pob zeb sib tov, nws yog qhov zoo los txiav txim siab txog cov xwm txheej tshwj xeeb thiab kev siv:
Pobzeb Adhesives:
RDP feem ntau siv hauv cov ntawv nplaum nplaum. Kev txhim kho adhesion thiab hloov tau yooj yim muab los ntawm RDP kom ntseeg tau tias cov vuas tseem ruaj khov rau cov substrates, txawm tias nyob rau hauv ib puag ncig uas muaj dej noo thiab kub hloov pauv.
Kho Mortars:
Hauv kev kho mortars, RDP txhim kho kev sib txuas ntawm cov mortar tshiab rau cov pob zeb qub, ua kom muaj kev ruaj khov thiab ruaj khov. Qhov yooj yim thiab tawg tsis kam muab los ntawm RDP yog qhov tseem ceeb rau kev tswj xyuas kev ncaj ncees ntawm cov qauv kho.
Sab nrauv Thermal Insulation Systems (ETICS):
RDP yog ib qho tseem ceeb hauv ETICS, qhov uas nws pab khi cov ntaub ntawv rwb thaiv tsev rau sab nrauv phab ntsa thiab txhim kho tag nrho cov kev ua tau zoo ntawm cov rwb thaiv tsev. Cov khoom ua kom zoo dua qub thiab cov huab cua-resistant kom ntseeg tau tias qhov kev ua tau zoo ntawm cov rwb thaiv tsev mus ntev.
Redispersible Polymer Powders ua lub luag haujlwm tseem ceeb hauv niaj hnub mortar binder pob zeb sib tov. Lawv lub peev xwm los txhim kho kev ua haujlwm, adhesion, yoog raws, dej tsis kam, thiab cov khoom siv kho tshuab ua rau lawv tseem ceeb hauv ntau daim ntawv thov kev tsim kho. Los ntawm kev txhim kho cov kav ntev thiab kev ua tau zoo ntawm cov pob zeb, RDPs ua rau lub neej ntev thiab kev ruaj khov ntawm cov qauv, muab cov txiaj ntsig kev lag luam thiab ib puag ncig. Raws li kev tsim kho thev naus laus zis tau nce siab, lub luag haujlwm ntawm RDP yuav nthuav dav, ua rau txoj hauv kev rau cov khoom tsim kho tshiab thiab muaj zog dua.
Post lub sij hawm: May-22-2024