Redispersible polymer hmoov (RDP) txhim kho sag kuj

Redispersible polymer hmoov (RDPs) tau nyiam ntau yam hauv kev tsim cov ntaub ntawv vim lawv muaj peev xwm txhim kho ntau yam khoom ntawm mortars thiab cov khoom siv cement. Ib qho txiaj ntsig tseem ceeb ntawm RDP yog nws lub peev xwm los ua kom muaj zog tiv thaiv sag, ib qho tseem ceeb hauv kev tsim kho.

Redispersible polymer hmoov (RDP) tau dhau los ua ntau yam ntxiv hauv cov ntaub ntawv tsim kho, muab ntau yam txiaj ntsig nrog rau kev txhim kho adhesion, yooj, dej tsis kam thiab sag kuj. Sag kuj yog hais txog lub peev xwm ntawm cov khoom siv los tswj nws cov duab thiab tiv thaiv kev ntws los yog deformation thaum siv vertically lossis nyiaj siv ua haujlwm. Hauv kev tsim cov ntawv thov xws li pobzeb nplaum, plasters thiab stuccoes, sag kuj tseem ceeb heev kom ntseeg tau tias kev txhim kho kom zoo thiab kev ua haujlwm ntev.

Cov khoom ntawm Redispersible Polymer Powder (RDP)

RDP feem ntau yog tsim los ntawm cov txheej txheem ziab kom qhuav uas muaj cov polymer dispersion hloov mus rau hauv cov hmoov dawb ntws. Cov yam ntxwv ntawm RDP, suav nrog qhov loj me, iav hloov pauv kub, hom polymer, thiab tshuaj lom neeg muaj pes tsawg leeg, ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab nws cov kev ua tau zoo hauv kev tsim kho. Lub particle loj faib ntawm RDP cuam tshuam rau nws dispersion, film-forming thiab mechanical zog, uas nyob rau hauv lem cuam tshuam sag kuj.

1.RDP's mechanism rau kev txhim kho cov khoom tiv thaiv sag
Muaj ob peb lub tswv yim uas ua rau RDP qhov kev tiv thaiv ntau ntxiv rau sagging:

ib. Particle Filling: Cov khoom zoo ntawm RDP tuaj yeem sau cov voids thiab ua kom cov ntim ntim ntawm cov tshuaj khib lossis cov nplaum, yog li ua rau nws tsis kam mus rau sag.

b. Kev tsim cov yeeb yaj kiab: RDP tsim cov yeeb yaj kiab txuas ntxiv thaum hydrated, ntxiv dag zog rau mortar matrix thiab imparting cohesion, yog li txo qhov nyiam sag.

C. Flexibility: Cov khoom elastic ntawm RDP pab txhawb kev hloov pauv ntawm cov tshuaj khib nyiab, cia nws tiv taus kev ntxhov siab thiab deformation yam tsis muaj sagging.

d. Kev tuav dej: RDP tuaj yeem txhim kho cov dej tuav lub peev xwm ntawm mortar, ua kom muaj kev ua haujlwm ntev thiab txo qhov kev pheej hmoo ntawm sagging thaum tsim kho.

2. Yam cuam tshuam rau sag kuj
Muaj ntau ntau yam uas cuam tshuam rau sag kuj ntawm cov ntaub ntawv cement, xws li:

ib. Muaj pes tsawg leeg: Hom thiab tus nqi ntawm RDP, nrog rau lwm yam khoom ntxiv xws li thickeners thiab dispersants, tuaj yeem cuam tshuam sag resistance.

b. Consistency: Qhov sib xws ntawm mortar los yog nplaum yog txiav txim siab los ntawm cov yam ntxwv xws li qhov sib piv ntawm cov dej rau cov nplaum thiab cov txheej txheem sib xyaw, thiab ua lub luag haujlwm tseem ceeb hauv sag resistance.

C. Substrate Properties: Cov khoom ntawm lub substrate, xws li porosity thiab roughness, cuam tshuam rau adhesion thiab sag kuj ntawm cov ntaub ntawv thov.

d. Ib puag ncig tej yam kev mob: Kub, av noo, thiab airflow tuaj yeem cuam tshuam cov txheej txheem ziab thiab kho, yog li cuam tshuam sag kuj.

3. Kev ntsuam xyuas ntawm sag kuj
Muaj ntau txoj hauv kev tuaj yeem siv los ntsuas qhov sag tsis kam ntawm cov khoom siv hauv tsev, suav nrog:

ib. Flow tests: Flow tests, xws li slump tests and flow bench tests, feem ntau yog siv los ntsuam xyuas tus cwj pwm ntws thiab sib xws ntawm mortars thiab adhesives.

b. Sag test: Kev ntsuas sag suav nrog siv tus qauv ntsug lossis sab saud thiab ntsuas qhov ntsuas ntawm sag dhau sijhawm. Cov txheej txheem xws li kev sim lub khob hliav qab thiab kev kuaj hniav yog siv los ntsuas qhov tsis kam sag.

C. Kev ntsuas Rheological: Rheological tsis, suav nrog viscosity, tawm los kev ntxhov siab thiab thixotropy, muab kev pom rau kev ntws thiab deformation tus cwj pwm ntawm cov khoom siv.

d. Kev ua tau zoo: Thaum kawg, cov khoom siv tiv thaiv sag raug soj ntsuam raws li nws qhov kev ua tau zoo hauv kev siv tiag tiag hauv ntiaj teb, xws li kev teeb tsa pobzeb thiab facade rendering.

4. Kev siv RDP hauv kev txhim kho sag kuj
RDP yog dav siv hauv cov khoom siv los txhim kho sag kuj:

ib. Pobzeb Adhesives: RDP txhim kho qhov adhesion thiab sag tsis kam ntawm cov nplais nplaum, ua kom muaj kev sib raug zoo thiab txo cov pobzeb slippage thaum lub sij hawm installation.

b. Rendering thiab Stucco: Nyob rau sab nrauv plastering thiab stucco, RDP nce sag kuj thiab tso cai rau du, txawm daim ntawv thov ntawm ntsug nto yam tsis muaj slumping los yog deformation.

C. Self-leveling compounds: RDP tuaj yeem muab tso rau hauv tus kheej-leveling compounds los txhim kho kev khiav thiab sag tsis kam, ua rau lub tiaj thiab theem hauv pem teb.

d. Waterproof membrane: RDP txhim khu lub sag kuj ntawm cov waterproof membrane, kom ntseeg tau tias txawm kev pab them nqi thiab muab txhim khu kev qha waterproof tiv thaiv.

5. Cov ntaub ntawv tshawb fawb thiab cov piv txwv
Ntau qhov kev tshawb fawb thiab cov piv txwv qhia tau hais tias qhov ua tau zoo ntawm RDP hauv kev txhim kho sag kuj:

ib. Case Study 1: Daim ntawv thov ntawm RDP hauv cov nplais nplaum rau cov lag luam loj, ua kom pom kev txhim kho sag tsis kam thiab ua haujlwm ntev.

b. Case Study 2: Kev ntsuam xyuas ntawm RDP hloov kho renders nyob rau hauv facades qhia superior sag kuj thiab huab cua tsis kam.

C. Piv txwv 1: Kev sib piv ntawm sag kuj ntawm mortar nrog thiab tsis muaj RDP additive, qhia txog kev txhim kho tseem ceeb ua tiav nrog RDP.

d. Piv txwv 2: Kev sim teb ntawm RDP hloov kho tus kheej-leveling compound, qhia txog kev yooj yim ntawm kev siv thiab zoo heev sag kuj nyob rau hauv lub ntiaj teb no.

Redispersible polymer hmoov (RDP) ua lub luag haujlwm tseem ceeb hauv kev txhim kho sag tsis kam ntawm cov khoom siv hauv tsev, muab kev sib xyaw ua ke ntawm cov cuab yeej cuab tam, kev tsim cov yeeb yaj kiab thiab dej tuav cov khoom. Los ntawm kev nkag siab txog cov txheej txheem thiab cov yam ntxwv uas cuam tshuam sag tsis kam thiab siv cov kev ntsuas tsim nyog, cov kws ua haujlwm thiab cov neeg cog lus tuaj yeem siv RDP kom ua tiav cov kev daws teeb meem ruaj khov thiab ua haujlwm siab. Los ntawm kev tshawb fawb txuas ntxiv thiab kev tsim kho tshiab, RDP cia siab tias yuav txuas ntxiv ua qhov tseem ceeb ntxiv hauv kev daws cov teeb meem cuam tshuam txog kev poob qis thiab nce qib ntawm cov khoom siv hauv tsev.