Cov ntawv thov ntawm Redispersible Polymer Hmoov (RDP) hauv Mortar

1. Yuav ua li cas Redispersible Polymer Hmoov Txhim Kho Lub Zog Adhesion thiab Kev Ua Haujlwm Sib Txuas Lus hauv Mortar Systems

Cov hmoov polymer uas yaj tau dua (RDP)tau dhau los ua ib qho khoom siv tseem ceeb hauv cov qauv mortar niaj hnub no, tshwj xeeb tshaj yog rau cov nplaum rau pobzeb, cov mortar kho, thiab cov mortars nyias. Nws lub luag haujlwm tseem ceeb yog txhim kho kev sib txuas ntawm cov ntaub ntawv cementitious thiab cov substrates, kom ntseeg tau tias cov qauv muaj zog thiab ruaj khov dua.

Thaum RDP sib xyaw rau hauv cov mortar, nws tawg mus ua cov khoom me me polymer uas rov ua kom dej noo thaum sib cuag nrog dej, tsim cov zaj duab xis polymer yooj ywm hauv cov mortar matrix. Cov zaj duab xis polymer no ua haujlwm ua tus choj ntawm cov mortar thiab cov substrate, txhim kho lub zog lo. Tsis zoo li cov cement mortars ib txwm muaj, uas tsuas yog siv cov khoom sib txuas thiab cov khoom siv hydration rau kev sib txuas, RDP-modified mortars tau txais txiaj ntsig los ntawm ob qho tib si kev lo rau tshuaj lom neeg thiab kev tsim cov zaj duab xis lub cev. Lub tshuab ob npaug no ua rau muaj kev txhim kho thawj zaug tack, zoo dua qub kev sib txuas ntev, thiab txhim kho kev tiv thaiv rau delamination hauv qab kev ntxhov siab.

Qhov muaj cov polymers uas rov tawg ua dua tshiab txo qhov kev tsim cov kab nrib pleb me me ntawm qhov sib tshuam, uas yog ib txwm muaj nyob rau hauv cov mortars ib txwm vim yog kev ntsws thiab kev qhuav. Los ntawm kev ua kom muaj kev sib koom ua ke hauv cov mortar matrix, RDP ua kom ntseeg tau tias kev ntxhov siab tau faib sib npaug, tiv thaiv cov chaw tsis muaj zog thiab txhim kho kev ua tau zoo tag nrho.

RDP kuj tseem pab txhawb kev ua haujlwm tau zoo dua, ua rau cov mortar nthuav dav tau yooj yim dua thiab sau cov qhov tsis sib xws hauv cov substrate. Qhov no ua kom muaj kev sib cuag ntau tshaj plaws ntawm cov mortar thiab qhov chaw, ua kom muaj kev sib txuas ntxiv. Tsis tas li ntawd, cov mortars hloov kho RDP ua rau muaj kev ua tau zoo dua nyob rau hauv cov xwm txheej ib puag ncig nyuaj, suav nrog kev hloov pauv kub thiab kev hloov pauv dej noo, tswj kev sib txuas lub zog dhau sijhawm.

Cov hmoov polymer uas tawg tau dua tshiab hloov cov mortar ib txwm mus ua ib lub kaw lus ua haujlwm siab los ntawm kev sib xyaw ua ke kev ywj pheej, kev muaj peev xwm tsim zaj duab xis, thiab kev sib koom ua ke zoo dua. Nws lub peev xwm los txhim kho ob qho tib si kev sib txuas thawj zaug thiab ntev mus ntev ua rau nws yog ib qho khoom siv tseem ceeb rau cov ntawv thov kev tsim kho niaj hnub, ua kom ntseeg tau tias kev sib txuas ruaj khov thiab txhim khu kev qha hla ntau yam substrates.

2. Lub Luag Haujlwm ntawm RDP hauv Kev Txhim Kho Kev Ywj Pheej, Kev Tiv Thaiv Kev Tawg, thiab Kev Ruaj Khov ntawm Cement-Based Mortars

Cov hmoov polymer uas tawg tau dua (RDP) ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm thiab lub neej ntev ntawm cov cement-based mortars. Ib qho ntawm nws cov txiaj ntsig tseem ceeb tshaj plaws yog kev txhim kho kev ywj pheej, uas cuam tshuam ncaj qha rau kev tiv thaiv kev tawg thiab kev ruaj khov tag nrho. Cov cement mortars ib txwm muaj kev tawg yooj yim, ua rau lawv yooj yim tawg me me thaum ziab, ntsws, lossis nyob rau hauv kev ntxhov siab ntawm lub tshuab. Thaum RDP raug koom ua ke, nws tsim cov zaj duab xis polymer txuas ntxiv hauv cov mortar matrix, muab kev ywj pheej thiab pab txhawb kev txav me me yam tsis ua rau muaj kev tawg.

Cov polymer network no txhim kho kev sib koom ua ke ntawm cov cement thiab cov khoom sau, ua rau cov mortar nqus thiab faib kev ntxhov siab kom sib npaug. Yog li ntawd, qhov tshwm sim ntawm kev tawg vim yog thermal nthuav dav, kev txav mus los ntawm substrate, lossis shrinkage raug txo qis heev. Rau cov mortar kho, cov nplaum pobzeb, lossis cov khoom siv rwb thaiv tsev sab nraud, qhov kev tiv thaiv tawg no yog qhov tseem ceeb rau kev tswj hwm kev ruaj khov ntawm cov qauv thiab kev ua haujlwm mus sij hawm ntev.

Ntxiv rau qhov yooj ywm, RDP ua kom cov mortars ruaj khov los ntawm kev txhim kho kev khaws dej thiab txo qhov permeability. Cov zaj duab xis polymer tsim ib qho thaiv dej uas tiv thaiv dej tsis pub nkag, tiv thaiv cov mortar los ntawm kev puas tsuaj los ntawm kev khov-thaw, kev tawm tsam tshuaj lom neeg, thiab kev leaching ntawm cov khoom siv cement hydration. Qhov cuam tshuam no pab tswj lub zog kho tshuab dhau sijhawm, txawm tias nyob rau hauv cov xwm txheej ib puag ncig hnyav.

Cov mortars uas hloov kho los ntawm RDP qhia tau tias lawv lo rau ntau yam substrates thaum tseem khaws lawv qhov yooj ywm thiab tiv taus kev tawg. Qhov sib xyaw ua ke ntawm elasticity, kev sib koom ua ke zoo dua, thiab kev tiv taus dej ua kom ntseeg tau tias cov mortars no tuaj yeem tiv taus kev ntxhov siab ntawm cov khoom siv, kev hloov pauv ntawm ib puag ncig, thiab kev siv mus sij hawm ntev yam tsis muaj kev cuam tshuam rau kev ua tau zoo.

Cov hmoov polymer uas tawg tau dua tshiab hloov cov cement mortars uas tawg yooj yim mus ua cov khoom siv uas ruaj khov, tiv taus kev tawg, thiab ruaj khov. Los ntawm kev txhim kho kev ywj pheej, txhim kho kev faib tawm kev ntxhov siab, thiab tiv thaiv kev puas tsuaj rau ib puag ncig, RDP ua kom ntseeg tau tias cov cement-based mortars muab kev ua tau zoo hauv ob qho tib si tus qauv thiab cov ntawv thov uas xav tau.

3.RDP Cov Nyhuv ntawm Kev Ua Haujlwm, Kev Khaws Dej, thiab Rheological Stability hauv Cov Ntawv Thov Mortar Qhuav-Mix

Cov hmoov polymer uas tawg tau dua (RDP) yog siv dav hauv cov mortars qhuav kom txhim kho kev ua haujlwm, kev khaws dej, thiab kev ruaj khov ntawm rheological, txhua yam no yog qhov tseem ceeb rau kev ua haujlwm tas mus li thiab yooj yim siv. Cov mortars qhuav, suav nrog cov nplaum rau pobzeb, cov mortars kho, thiab cov tshuaj plastering, xav tau kev tswj dej kom raug thiab cov dej ntws du kom ntseeg tau tias siv tau zoo thiab ruaj khov mus ntev.

Thaum RDP raug muab tso rau hauv cov mortar qhuav, nws rov faib sib npaug thaum hydrated, tsim cov zaj duab xis polymer zoo hauv lub matrix. Cov zaj duab xis no ua rau muaj kev sib koom ua ke ntawm cov cement, xuab zeb, thiab lwm yam khoom siv minerals, ua rau muaj cov yas thiab ua haujlwm tau zoo dua. Kev ua haujlwm zoo dua tso cai rau cov mortar kom nthuav dav tau yooj yim, sau cov chaw tsis sib xws, thiab tswj kev sib cuag nrog cov substrates, txhim kho kev sib txuas thiab txo cov voids.

Kev khaws dej yog lwm qhov tseem ceeb uas RDP ua lub luag haujlwm tseem ceeb. Cov zaj duab xis polymer pab khaws dej hauv cov mortar thaum lub sijhawm thov thiab kho, ua rau qeeb qeeb ntawm kev ua kom qhuav. Qhov no ua kom ntseeg tau tias cov cement hydration tiav, txo qis kev ntsws, thiab txo qhov kev pheej hmoo ntawm kev tawg, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov txheej nyias lossis cov xwm txheej sov thiab qhuav.

RDP pab txhawb rau qhov ruaj khov ntawm cov mortars, tswj kev ntws thiab viscosity tas li dhau sijhawm. Qhov no tiv thaiv kev sib cais ntawm cov aggregates, ua kom muaj kev siv sib xws, thiab txhim kho kev pumpability hauv cov tshuab siv. Los ntawm kev tswj viscosity, RDP-modified mortars txo qhov sagging, slumping, lossis dripping, txawm tias ntawm ntsug lossis saum npoo, ua rau kev siv huv dua thiab ua haujlwm tau zoo dua.

Qhov kev suav nrog cov hmoov polymer uas rov ua dua tshiab ua rau cov mortars qhuav sib xyaw ua cov khoom siv uas yooj yim siv, ua tau zoo. Los ntawm kev txhim kho kev ua haujlwm, ua kom cov dej khaws cia zoo, thiab ua kom ruaj khov rheology, RDP ua kom ntseeg tau tias cov mortars yooj yim dua rau kev tuav, siv, thiab kho kom zoo, xa cov khoom zoo thiab ruaj khov thoob plaws ntau qhov chaw tsim kho.

4. Xaiv Cov Hmoov Polymer Uas Rov Qab Tau Zoo Rau Cov Nplaum Pobzeb, Cov Mortars Kho, thiab Cov Tshuab Rwb Thaiv Sab Nraud

Kev xaiv cov hmoov polymer uas tawg tau dua tshiab (RDP) yog qhov tseem ceeb rau kev ua tiav qhov kev ua tau zoo tshaj plaws hauv cov nplaum pobzeb, cov tshuaj kho, thiab cov txheej txheem rwb thaiv tsev sab nraud (EIFS). Tsis yog txhua RDP zoo ib yam; lawv cov tshuaj lom neeg sib xyaw, qhov loj me ntawm cov khoom me me, thiab cov khoom ua zaj duab xis muaj feem cuam tshuam rau kev nplaum, kev ywj pheej, kev khaws dej, thiab kev ua haujlwm ntev ntawm cov tshuaj cement.

Rau cov nplaum pobzeb, RDP uas muaj qhov pib zoo thiab muaj zaj duab xis zoo yog qhov zoo dua. Cov yam ntxwv no ua kom muaj kev nplaum zoo rau ob qho tib si ceramic thiab pob zeb ntuj, txawm tias nyob rau ntawm cov chaw du, thaum tseem tswj tau qhov ywj pheej kom haum rau kev nthuav dav thermal thiab kev txav mus los ntawm cov khoom siv. Cov mortars nrog RDP zoo li no txo ​​qhov kev pheej hmoo ntawm kev sib txuas ntawm pobzeb thiab txhim kho kev teeb tsa zoo.

Cov tshuaj khib kho, ntawm qhov tod tes, feem ntau xav tau RDP uas txhim kho kev sib koom ua ke, tiv thaiv kev tawg, thiab tswj kev ntsws. Cov hmoov uas muaj cov khoom me me thiab kev tawg sai sai txhawb kev faib tawm sib npaug, txhim kho kev ua kom zoo ntawm cov tshuaj khib thiab kev kho cov qauv. Cov ntsiab lus polymer siab kuj tseem tuaj yeem txhim kho kev khaws dej, ua rau cov tshuaj khib kho tau zoo hauv cov txheej nyias lossis nyob rau hauv cov xwm txheej ib puag ncig hnyav.

Rau cov khoom siv rwb thaiv tsev sab nraud thiab cov khoom siv ua tiav, kev ruaj khov thiab kev tiv taus huab cua yog qhov tseem ceeb. RDP nrog cov peev xwm ua zaj duab xis muaj zog thiab kev tiv taus tshuaj lom neeg ua rau cov mortar tsis kam rau cov voj voog khov-thaw, nkag mus rau hauv dej noo, thiab kev puas tsuaj UV. Qhov no ua kom muaj kev sib txuas ntev ntawm cov laug cam rwb thaiv tsev thiab cov txheej render thaum tswj kev ywj pheej kom haum rau kev txav ntawm cov substrate.

Thaum xaiv ib qhoRDP, cov neeg tsim qauv yuav tsum xav txog kev sib raug zoo nrog lwm cov khoom ntxiv, hom cement, thiab cov txheej txheem siv. Kev kuaj hauv chaw soj nstuam, suav nrog lub zog lo, rheology, thiab kev ntsuas kev khaws dej, yog qhov tseem ceeb kom phim cov hmoov polymer nrog rau kev siv uas tau npaj tseg.

Kev xaiv cov hmoov polymer uas tawg tau zoo yog qhov sib npaug ntawm qhov yuav tsum tau ua haujlwm, cov xwm txheej ntawm kev siv, thiab cov yam ntxwv ntawm cov khoom siv. Los ntawm kev xaiv RDP uas tsim los rau cov ntawv thov mortar tshwj xeeb, cov neeg cog lus thiab cov chaw tsim khoom tuaj yeem ua tiav kev nplaum zoo, kev ruaj khov, thiab kev ntseeg siab mus sij hawm ntev, ua kom ntseeg tau tias cov txiaj ntsig zoo ntawm kev tsim kho.