Redispersible Polymer Powder (RDP)yog ib qho tseem ceeb additive siv nyob rau hauv ntau yam qhuav mortar formulations. Nws yog cov hmoov polymer-raws li, thaum sib xyaw nrog dej, rov faib los ua ib zaj duab xis. Cov yeeb yaj kiab no nthuav tawm ntau yam khoom tseem ceeb rau lub mortar, xws li txhim kho adhesion, yooj, dej tsis kam, thiab tawg tsis kam. Raws li kev tsim kho yuav hloov zuj zus, RDPs tau txais kev thov dav dav hauv cov khoom siv tshuaj khib nyiab tshwj xeeb, qhov uas lawv cov txiaj ntsig ua lub luag haujlwm tseem ceeb hauv kev txhim kho cov yam ntxwv ua haujlwm.
1.Redispersible Polymer Powder (RDP) Txheej txheem cej luam
Redispersible Polymer Powder (RDP) yog tsim los ntawm ziab emulsions ntawm hluavtaws polymers, feem ntau styrene-butadiene (SB), vinyl acetate-ethylene (VAE), los yog acrylics. Cov polymers no yog finely milled thiab muaj peev xwm redisperse thaum tov nrog dej, tsim ib zaj duab xis uas txhim kho cov neeg kho tshuab zog ntawm lub mortar.
Cov yam ntxwv tseem ceeb ntawm RDPs:
Adhesion txhim khu kev qha: Txhim kho kev sib txuas rau substrate.
Yooj yim: Muab kev txav txav thiab txo qhov tawg.
Dej tsis kam: Ua kom muaj zog tiv thaiv dej nkag.
Txhim kho kev ua haujlwm: Txhim kho qhov yooj yim ntawm kev thov.
Txhim khu durability: Pab txhawb kev ua haujlwm ntev ntev hauv cov xwm txheej hnyav.
2.Daim ntawv thov nyob rau hauv Tshwj xeeb qhuav mortar khoom
ib.Pobzeb Adhesive
Pobzeb nplaum yog ib qho ntawm cov kev siv feem ntau ntawm Redispersible Polymer Powder (RDP). Cov nplaum no yog tsim los ua cov pobzeb rau ntau qhov chaw, nrog rau cov phab ntsa thiab cov plag tsev. Kev suav nrog RDP hauv cov nplais nplaum ua kom muaj txiaj ntsig zoo hauv qab no:
Bond zog: Cov nplaum nplaum ntawm cov pobzeb thiab cov substrate tau txhim kho zoo, tiv thaiv cov pobzeb detachment thaum lub sijhawm.
Yooj yim: RDP pab txhim kho qhov yooj yim ntawm cov nplaum, tso cai rau nws tiv thaiv kev tawg thiab delamination vim qhov txav ntawm lub hauv paus substrate los yog cov vuas lawv tus kheej.
Lub sijhawm qhib: Lub sij hawm ua hauj lwm ua ntej cov nplaum pib teeb yog txuas ntxiv, muab sij hawm ntxiv rau kev hloov kho thaum lub sij hawm installation.
| Khoom | Tsis muaj RDP | Nrog RDP |
| Bond zog | Nruab nrab | Siab |
| Yooj yim | Tsawg | Siab |
| Lub sijhawm qhib | Luv luv | Txuas ntxiv |
| Dej tsis kam | pluag | Zoo |
b.Plasters
Redispersible Polymer Powder (RDP) yog dav siv nyob rau hauv sab hauv thiab sab nrauv plasters los txhim kho adhesion, dej tsis kam, thiab yooj. Nyob rau hauv cov ntaub ntawv ntawm sab nraud renders los yog façade systems, RDPs muab kev pab ntxiv xws li txhim khu kev tiv thaiv rau huab cua thiab UV degradation.
Adhesion rau substrate: RDP ua kom cov plaster ua kom zoo dua rau cov pob zeb, cib, lossis lwm yam khoom siv hauv tsev, txawm tias raug dej thiab av noo.
Dej tsis kam: Tshwj xeeb tshaj yog nyob rau sab nrauv plasters, RDPs ua rau dej tsis kam, tiv thaiv kev nkag mus ntawm cov dej noo thiab qhov kev puas tsuaj tshwm sim los ntawm khov-thaw mus.
Txhaum tsis kam: Kev txhim kho yooj yooj yim ntawm cov plaster txo qhov kev pheej hmoo ntawm cov kab nrib pleb vim yog thermal lossis mechanical stresses.
| Khoom | Tsis muaj RDP | Nrog RDP |
| Adhesion rau substrate | Nruab nrab | Zoo heev |
| Dej tsis kam | Tsawg | Siab |
| Yooj yim | txwv | Nce |
| Txhaum tsis kam | pluag | Zoo |
c.Kho Mortars
Kho mortars yog siv los kho qhov chaw puas, xws li cov pob zeb tawg lossis tawg. Hauv cov ntawv thov no, RDP ua lub luag haujlwm tseem ceeb hauv kev txhim kho cov hauv qab no:
Bonding rau qhov chaw qub: Redispersible Polymer Powder (RDP) txhim kho adhesion rau cov substrates uas twb muaj lawm, kom ntseeg tau tias cov khoom siv kho kom ruaj ntseg.
Ua haujlwm tau: RDP ua rau cov mortar yooj yim dua rau kev thov thiab qib, txhim kho qhov yooj yim ntawm kev siv tag nrho.
Durability: Los ntawm kev txhim kho cov tshuaj lom neeg thiab cov khoom siv tshuaj lom neeg ntawm cov tshuaj khib nyiab, RDP ua kom muaj kev kho kom ntev ntev uas tiv thaiv kev tawg, shrinkage, thiab dej puas.
| Khoom | Tsis muaj RDP | Nrog RDP |
| Bonding rau substrate | Nruab nrab | Zoo heev |
| Ua haujlwm tau | Nyuaj | Smooth thiab yooj yim rau kev thov |
| Durability | Tsawg | Siab |
| Resistance rau shrinkage | Nruab nrab | Tsawg |
d.Sab nraud Thermal Insulation Systems (ETICS)
Hauv cov txheej txheem thermal rwb thaiv tsev sab nraud (ETICS), Redispersible Polymer Powder (RDP) yog siv rau hauv cov nplaum nplaum rau cov ntaub ntawv rwb thaiv tsev rau cov phab ntsa sab nrauv ntawm cov tsev. RDPs pab txhawb rau tag nrho cov kev ua tau zoo los ntawm:
Txhim kho adhesion: Ua kom muaj kev sib raug zoo ntawm cov rwb thaiv tsev thiab cov substrate.
Kev tiv thaiv huab cua: Kev txhim kho yooj yim thiab dej tsis kam pab lub cev ua haujlwm zoo dua nyob rau hauv ib puag ncig sib txawv.
Kev cuam tshuam tsis kam: Txo qhov kev pheej hmoo ntawm kev puas tsuaj los ntawm kev cuam tshuam lub cev, xws li los ntawm lawg lossis kev siv tshuab thaum lub sijhawm teeb tsa.
| Khoom | Tsis muaj RDP | Nrog RDP |
| Adhesion | Nruab nrab | Siab |
| Yooj yim | txwv | Siab |
| Dej tsis kam | Tsawg | Siab |
| Kev cuam tshuam tsis kam | Tsawg | Zoo |
3.Cov txiaj ntsig ntawmRedispersible Polymer Powder (RDP)nyob rau hauv qhuav mortar khoom
Redispersible Polymer Powder (RDP) tau txhim kho kev ua haujlwm ntawm cov khoom siv khib nyiab qhuav, muab cov txiaj ntsig hauv qab no:
ib.Txhim kho Adhesion
RDP txhim kho lub zog sib txuas ntawm cov mortar thiab ntau yam substrates, uas yog qhov tseem ceeb tshwj xeeb rau cov ntawv thov xws li cov nplaum nplaum thiab kho cov mortars, qhov twg yuav tsum muaj zog adhesion los tiv thaiv delamination lossis tsis ua haujlwm dhau sijhawm.
b.Crack Resistance
Qhov yooj yim muab los ntawm RDPs tso cai rau cov tshuab mortar hloov mus rau thermal txav, txo qhov kev pheej hmoo ntawm cov kab nrib pleb. Cov cuab yeej no yog qhov tseem ceeb rau kev siv sab nraud, xws li plasters thiab ETICS, qhov chaw txav hauv tsev lossis huab cua huab cua tuaj yeem ua rau tawg.
c.Dej tsis kam
Rau ob qho tib si sab hauv thiab sab nrauv daim ntaub ntawv, RDPs pab ua kom cov dej tsis zoo, pab tiv thaiv kom tsis txhob ya raws. Qhov no tshwj xeeb tshaj yog muaj txiaj ntsig zoo hauv qhov chaw ntub dej, ua kom lub neej ntev thiab ua haujlwm ntev ntawm cov khoom siv.
d.Txhim kho kev ua haujlwm
Cov mortars uas muaj RDP yooj yim dua rau kev thov, sib kis, thiab kho, txhim kho tag nrho cov neeg siv kev paub. Qhov no yog qhov txiaj ntsig tseem ceeb hauv cov nplais nplaum thiab kho cov mortars, qhov yooj yim ntawm kev siv tuaj yeem ua kom cov txheej txheem tsim kho.
e.Durability
Cov mortars nrog Redispersible Polymer Powder (RDP) s muaj kev tiv taus ntau dua rau hnav thiab tsim kua muag, ua kom muaj kev ua haujlwm ntev dua nyob rau hauv ntau yam kev ntxhov siab ib puag ncig.
Redispersible Polymer Powder (RDP)s yog cov khoom tseem ceeb hauv kev tsim cov mortars tshwj xeeb qhuav, txhim kho lawv lub cev xws li adhesion, yoog raws, ua haujlwm tau zoo, thiab ua haujlwm ntev. Txawm hais tias siv rau hauv cov nplais nplaum, plasters, kho cov mortars, lossis cov txheej txheem rwb thaiv tsev sab nraud, RDPs ua rau muaj txiaj ntsig zoo thiab ua haujlwm ntev ntawm cov khoom. Raws li cov qauv kev tsim kho txuas ntxiv xav tau cov ntaub ntawv tshwj xeeb, kev siv RDPs hauv mortars qhuav yuav txuas ntxiv ua lub luag haujlwm tseem ceeb hauv kev ua kom tau raws li cov kev xav tau no.
Lub sij hawm xa tuaj: Feb-15-2025