Cov hmoov polymer uas yaj tau dua (RDP)yog cov khoom ntxiv tseem ceeb hauv cov qauv mortar qhuav uas siv thoob plaws ntau yam kev siv hauv kev tsim kho, suav nrog cov nplaum pobzeb, cov phab ntsa putty, cov khoom sib xyaw ua ke, thiab cov txheej txheem ua tiav sab nraud (EIFS). Cov hmoov polymer no yog tsim los ntawm kev txau-qhuav polymer emulsions, tsim cov hmoov ntws dawb uas rov tawg hauv dej kom rov ua dua cov latex qub. RDP txhim kho cov khoom tseem ceeb xws li kev ywj pheej, kev nplaum, kev cuam tshuam, thiab kev khaws cia dej. Txawm li cas los xij, kev xaiv RDP zoo yuav tsum nkag siab txog cov tshuaj lom neeg sib xyaw thiab kev ua haujlwm ntawm ntau hom muaj nyob hauv khw.
1. Cov Cheebtsam Tseem Ceeb ntawm RDP
Cov hmoov polymer uas tawg tau dua yog ua los ntawm cov hauv qab no:
Lub hauv paus polymer: Cov khoom siv polymer tseem ceeb, feem ntau yog vinyl acetate-ethylene (VAE), vinyl acetate-acrylic (VAc-Acr), styrene-butadiene (SBR), lossis ethylene-vinyl chloride (EVA).
Cov tshuaj colloid tiv thaiv: Feem ntau yog polyvinyl cawv (PVA), uas qhwv cov khoom me me thaum lub sijhawm ziab tshuaj tsuag thiab ua kom lawv ruaj khov hauv dej.
Cov Khoom Ntxiv: Cov neeg sawv cev tiv thaiv kev sib sau ua ke xws li cov hmoov txhuv nplej siab lossis cov khoom siv mineral fillers yuav raug ntxiv rau kev ruaj khov thiab kev ntws zoo dua.
2. Hom RDP thiab Lawv Cov Yam Ntxwv
2.1. Cov tshuaj Vinyl Acetate-Ethylene (VAE) Copolymers
Cov Khoom: Kev sib npaug ntawm kev nplaum, kev ywj pheej, thiab kev tiv thaiv dej.
Daim Ntawv Thov: Cov nplaum rau pobzeb, cov tshuaj kho, cov nplaum rau phab ntsa, thiab cov tsho tiv no skim.
Cov txiaj ntsig:
Zoo heev redispersibility.
Zoo adhesion rau cov inorganic nto.
Pheej yig thiab muaj dav.
2.2. Cov tshuaj Vinyl Acetate-Acrylic (VAc-Acr) Copolymers
Cov Khoom: Kev tiv thaiv dej ntau dua thiab UV ruaj khov piv rau VAE.
Daim Ntawv Thov: EIFS, cov plasters sab nraud, cov mortars kho kom zoo nkauj.
Cov txiaj ntsig:
Kev ruaj khov dua nyob rau sab nraum zoov.
Muaj zog tsim cov yeeb yaj kiab nyob rau hauv ntau yam mob sib txawv.
2.3. Cov Hmoov Roj Hmab Styrene-Butadiene (SBR)
Cov Khoom: Kev yooj ywm thiab kev cuam tshuam zoo heev.
Kev Siv: Cov plag tsev pem teb, cov tshuaj pleev thaiv dej, cov xim tiv taus tawg.
Cov txiaj ntsig:
Zoo heev elongation thiab tensile zog.
Kev nplaum zoo txawm tias nyob rau ntawm cov substrates uas tsis muaj qhov dej.
2.4. Cov Ethylene-Vinyl Chloride (EVA) Copolymers
Cov Khoom: Kev yooj ywm siab thiab dej tsis kam.
Daim Ntawv Thov: Cov nplaum tshwj xeeb rau pobzeb, cov tshuaj kho, cov tshuaj pleev dej tsis nkag.
Cov txiaj ntsig:
Tshuaj tiv thaiv zoo dua.
Kev nplaum zoo dua nyob rau hauv qhov chaw nyuaj.
3. Cov Qauv rau Kev Xaiv RDP Zoo
3.1. Cov Kev Cai rau Daim Ntawv Thov
Qhov kev siv kawg txiav txim siab seb cov khoom twg tseem ceeb tshaj plaws:
Cov nplaum rau pobzeb xav tau kev nplaum siab thiab tiv taus kev plam.
EIFS xav tau kev ywj pheej thiab kev tiv taus huab cua.
Cov tshuaj sib xyaw ua ke uas tus kheej xav tau kev ntws thiab txo qhov ntsws.
3.2. Kev Sib Haum Xeeb ntawm Cov Khoom Siv
Xav txog cov khoom siv hauv paus (concrete, gypsum, cib, thiab lwm yam) thiab kev raug rau ib puag ncig. Rau cov substrates uas tsis muaj qhov porous lossis du, RDP nrog cov khoom sib txuas zoo xws li SBR yog qhov zoo dua.
3.3. Kev Yoog Tau Yooj Yim thiab Kev Ua Kom Deformation
Cov kab ke sab nraud lossis cov qauv uas raug rau cov voj voog thermal xav tau RDP nrog kev ntev thiab kev ywj pheej siab (piv txwv li, EVA lossis SBR).
3.4. Kev Khaws Dej thiab Kev Ua Haujlwm Tau
Qhov ntxiv ntawm RDP ua rau kom cov dej khaws cia tau zoo dua, qhov tseem ceeb hauv huab cua kub lossis qhuav. Cov hom VAE feem ntau ua rau muaj kev ua haujlwm tau zoo thiab lub sijhawm qhib.
3.5. Kev Ua Haujlwm ntawm Lub Tshuab
RDP cuam tshuam rau lub zog tensile, kev cuam tshuam, thiab kev puas tsuaj. Xaiv raws li qhov hnyav lossis kev hnav.
3.6. Kev Ruaj Khov Ib puag ncig
Rau kev siv sab nraud, kev tiv taus UV, kev ruaj khov alkali, thiab kev tiv taus dej yog qhov tseem ceeb heev. Acrylic-based lossis EVA RDP yog qhov tsim nyog dua rau hauv cov xwm txheej zoo li no.
4. Kev Sib Txawv ntawm RDP hauv Kev Xyaum
Txawm tias nyob hauv tib hom polymer, muaj ntau yam kev hloov pauv raws li:
Kub hloov iav (Tg): Tg qis dua ua rau cov zaj duab xis mos dua thiab yoog tau yooj yim dua. Tg siab dua ua rau muaj kev ruaj khov thiab tawv dua.
Qhov loj ntawm cov khoom me me: Cuam tshuam rau qhov nrawm ntawm kev tawg thiab qhov chaw tiav.
Cov ntsiab lus Polymer (%): Qhia txog cov khoom siv nquag; cov ntsiab lus siab dua feem ntau txhais tau tias kev ua tau zoo dua tab sis tus nqi nce ntxiv.
Kub tsim zaj duab xis: Cov polymers MFFT qis (kub tsim zaj duab xis tsawg kawg nkaus) tsim cov zaj duab xis ntawm cov huab cua ib puag ncig, tseem ceeb rau huab cua txias.
5. Kev Ntsuas Kev Ua Tau Zoo thiab Cov Cim Qhia Zoo
Thaum ntsuas lossis piv RDP, cov kev xeem hauv qab no feem ntau siv:
Kev sim rov tawg ua dua: Xyuas kom cov hmoov tuaj yeem rov tawg ua dua hauv dej.
Lub zog sib txuas (tensile adhesion): Ntsuas ua ntej thiab tom qab laus lossis raus dej.
Lub zog khoov thiab lub zog nias: Soj ntsuam kev txhim kho ntawm cov qauv hauv cov mortars.
Kev tiv thaiv kev ntsws thiab tawg: Tseem ceeb hauv kev kho cov mortars lossis cov ntawv thov txheej nyias.
Kev ua haujlwm tau yooj yim thiab lub sijhawm qhib: Soj ntsuam kev siv tau ntawm cov chaw ua haujlwm.
6. Tus nqi sib npaug rau kev ua tau zoo
Txawm hais tias RDP ua tau zoo xws li EVA lossis SBR muaj cov khoom zoo dua, lawv muaj tus nqi siab dua. Rau cov ntawv thov uas xav tau tus nqi qis, cov hmoov VAE txheem muab kev sib haum xeeb zoo. Kev sib xyaw ua ke ntawm ntau qib kuj tseem tuaj yeem ua kom zoo dua thaum tswj cov nuj nqis.
Kev xaiv cov hmoov polymer uas tawg tau zoo yuav tsum muaj kev sib npaug ntawm kev ua haujlwm thev naus laus zis, kev tsim nyog rau ib puag ncig, thiab kev siv nyiaj tsawg. Kev nkag siab txog cov tshuaj lom neeg, cov khoom siv kho tshuab, thiab cov kev xav tau tshwj xeeb rau kev siv ua rau cov neeg tsim cov qauv xaiv qhov zoo tshaj plaws.RDP rau lawv cov mortar lossis cov khoom siv hauv kev tsim khoRaws li kev lag luam kev tsim kho xav tau cov khoom siv uas ua tau zoo, ruaj khov, thiab yooj yim siv, lub luag haujlwm ntawm RDP txuas ntxiv nthuav dav - ua rau kev xaiv thiab kev sib txawv kom raug tseem ceeb dua puas tau.
Lub sijhawm tshaj tawm: Lub Yim Hli-07-2025