Cov nyhuv ntawm RDP rau EPS Insulation Mortar

Nrog kev txhim kho tas mus li ntawm cov kev xav tau txuag hluav taws xob hauv tsev, kev siv cov txheej txheem rwb thaiv tsev sab nraud hauv kev tsim kho tau dhau los ua ntau dua thiab ntau dua. Cov khoom siv rwb thaiv tsev polystyrene nthuav dav (EPS) yog siv dav hauv kev tsim cov haujlwm rwb thaiv tsev sab nraud vim nws qhov kev ua tau zoo rwb thaiv tsev, lub teeb yuag thiab kev tsim kho yooj yim. Txawm li cas los xij, EPS rwb thaiv tsev muaj teeb meem xws li lub zog qis thaum ntxov, yooj yim tawg, thiab kev ua haujlwm tsis zoo, uas txwv nws qhov kev siv. Txhawm rau txhim kho nws qhov kev ua tau zoo,Cov hmoov polymer uas yaj tau dua tshiab, ua ib qho khoom siv hloov kho organic tseem ceeb, tau raug coj los siv dav hauv EPS rwb thaiv tsev mortar.

1. Cov yam ntxwv tseem ceeb ntawm Redispersible polymer hmoov

Cov hmoov polymer uas tawg tau dua (RDP) yog cov hmoov uas tsim los ntawm kev txau kom qhuav ntawm cov polymer emulsion. Cov hom feem ntau suav nrog ethylene-vinyl acetate copolymer (EVA), acrylic thiab styrene-acrylic. Nws tuaj yeem tawg dua mus rau hauv cov emulsion tom qab kov dej, thiab tom qab sib xyaw nrog cement, dej thiab aggregate, nws koom nrog cov txheej txheem hydration ntawm cement los tsim cov zaj duab xis polymer, uas txhim kho qhov yooj ywm thiab lub zog sib txuas ntawm cov khoom.

2. Cov nyhuv ntawm Redispersible polymer hmoov rau kev ua haujlwm zoo

Ntxiv cov hmoov polymer Redispersible kom tsim nyog rau hauv EPS thermal insulation mortar tuaj yeem txhim kho nws cov dej khaws cia thiab ua haujlwm tau zoo. Cov zaj duab xis polymer tsim los ntawm RDP hauv mortar muaj qee qhov kev tuav dej, uas tuaj yeem ua rau qeeb qeeb ntawm cov dej evaporation, ua rau lub sijhawm tsim kho ntawm mortar ntev dua, thiab zoo rau kev tsim kho loj. Tib lub sijhawm, qhov muaj RDP ua rau cov mortar nplaum ntau dua, pab EPS cov khoom kom sib npaug hauv lub matrix, thiab txhim kho kev ua haujlwm ntawm kev tsim kho.

Tus nqi ntawm RDP ntxiv yuav tsum tau tswj hwm hauv qhov ntau thiab tsawg tsim nyog. Yog tias tus nqi ntxiv ntau dhau, cov tshuaj mortar yuav kua dhau, uas yuav ua rau muaj kev sib cais ntawm cov txheej thiab tsis sib xws. Tib lub sijhawm, nws kuj tseem yuav ua rau qeeb qeeb ntawm cov dej noo ntawm cov cement thiab cuam tshuam rau kev txhim kho lub zog thaum ntxov.

3. Cov nyhuv ntawm Redispersible polymer hmoov rau cov khoom siv kho tshuab

Cov hmoov polymer uas tawg tau dua tshiab muaj qhov cuam tshuam loj rau cov khoom siv kho tshuab ntawm EPS thermal insulation mortar. Ua ntej, RDP tuaj yeem tsim cov qauv sib xyaw nrog cov khoom siv cement hydration, txhim kho qhov ceev ntawm mortar, thiab txhim kho nws lub zog sib txuas thiab kev tiv thaiv tawg. Hauv thaj chaw hloov pauv interface, RDP tuaj yeem qhwv EPS cov khoom me me, txhim kho kev ua tau zoo ntawm kev sib txuas ntawm cov khoom sib sau ua ke thiab cov binder, thiab yog li txhim kho kev ruaj khov ntawm tag nrho cov qauv.

Hais txog lub zog compressive, qhov ntau ntawm RDP tsim nyog tuaj yeem ua rau kom cov mortar ntom ntom thiab txhim kho nws lub peev xwm tag nrho. Txawm li cas los xij, vim EPS nws tus kheej yog cov khoom siv tsis muaj zog, nws cov koob tshuaj ntau dua yuav txo qhov tag nrho lub zog compressive. Lub sijhawm no, lub luag haujlwm ntawm RDP hauv kev txhim kho kev ua haujlwm compressive los ntawm kev txhim kho kev sib txuas interface yog qhov pom tseeb dua. Yog li ntawd, hauv kev tsim qauv sib xyaw, qhov sib piv ntawm EPS thiab RDP yuav tsum tau ntsuas kom tsim nyog.

4. Cov nyhuv ntawm Redispersible polymer hmoov rau kev ua haujlwm ntev

Kev ruaj khov yog ib qho cim qhia tseem ceeb rau kev ntsuam xyuas cov ntaub ntawv rwb thaiv tsev thermal. Cov zaj duab xis polymer tsim tom qab ntxiv RDP tuaj yeem txo qhov nkag ntawm cov dej noo thiab cov ions tsis zoo, thiab txhim kho qhov tsis kam ntawm cov mortar, kev tiv thaiv te thiab kev tiv thaiv carbonization. Tib lub sijhawm, qhov yooj ywm ntawm cov polymer pab txo qhov kev ntxhov siab shrinkage los ntawm kev hloov pauv kub thiab av noo sab nraud, yog li txo qhov kev pheej hmoo ntawm mortar tawg.

Qhov hydrophobicity ntawm RDP kuj ua rau EPS thermal rwb thaiv tsev mortar muaj kev tiv thaiv dej zoo dua thiab ua rau nws lub neej ntev dua. Thaum muaj nag xob nag cua, av noo siab thiab lwm yam ib puag ncig, qhov zoo ntawm kev ua tau zoo ntawm RDP hloov kho mortar yog qhov pom tseeb dua.

Cov hmoov polymer uas yaj tau dua tshiabmuaj kev hloov pauv tseem ceeb hauv EPScov tshuaj nplaum rwb thaiv tsev. Nws tsis yog tsuas yog txhim kho kev ua tau zoo ntawm cov tshuaj nplaum, txhim kho kev sib txuas nrog cov khoom siv substrate thiab EPS, tab sis kuj txhim kho cov khoom siv kho tshuab thiab kev ruaj khov. Los ntawm kev ua kom zoo dua hom thiab koob tshuaj ntawm RDP, kev ua tau zoo ntawm EPS thermal rwb thaiv tsev tuaj yeem txhim kho ntxiv kom ua tau raws li kev txuag hluav taws xob thiab kev siv ntawm ntau lub tsev sib txawv. Hauv kev tshawb fawb yav tom ntej thiab kev xyaum ua haujlwm engineering, nws yog qhov tsim nyog los tshawb nrhiav ntxiv txog cov txiaj ntsig sib xyaw ntawm RDP thiab lwm yam admixtures, nrog rau nws cov kev ua tau zoo mus sij hawm ntev nyob rau hauv ntau yam xwm txheej ib puag ncig.