EPS granular thermal rwb thaiv tsev mortar yog cov khoom siv rwb thaiv tsev thermal sib xyaw nrog cov inorganic binder, organic binder, admixture, admixture thiab lub teeb aggregate hauv qee qhov sib piv. Hauv kev tshawb fawb tam sim no thiab kev siv EPS particle insulation mortar, cov hmoov latex redispersible recyclable muaj feem cuam tshuam loj rau kev ua haujlwm ntawm cov mortar thiab nyob rau hauv qhov feem ntau ntawm tus nqi, yog li nws yeej ib txwm yog qhov tseem ceeb ntawm kev saib xyuas. Kev ua tau zoo ntawm EPS particle thermal rwb thaiv tsev mortar sab nraud phab ntsa thermal rwb thaiv tsev system feem ntau yog los ntawm polymer binder, thiab nws cov khoom feem ntau yog vinyl acetate / ethylene copolymer. Hom polymer emulsion no tuaj yeem tsuag-qhuav kom tau txais cov hmoov latex redispersible. Vim yog kev npaj meej ntawm cov hmoov latex redispersible hauv kev tsim kho, kev thauj mus los yooj yim thiab kev khaws cia yooj yim, cov hmoov xoob rau polymers tau dhau los ua qhov kev txhim kho vim nws qhov kev npaj meej, kev thauj mus los yooj yim thiab kev khaws cia yooj yim. Kev ua tau zoo ntawm EPS particle insulation mortar nyob ntawm hom thiab ntau npaum li cas ntawm polymer siv. Ethylene-vinyl acetate latex hmoov (EVA) nrog cov ntsiab lus ethylene siab thiab Tg qis (iav hloov pauv kub) tus nqi muaj cov khoom zoo dua hauv cov nqe lus ntawm kev cuam tshuam lub zog, kev sib txuas lub zog thiab kev tiv thaiv dej.
Qhov kev ua kom zoo dua ntawm kev ua tau zoo ntawm cov hmoov latex uas tawg tau dua ntawm cov mortar yog vim qhov tseeb tias cov hmoov polymer yog cov polymer molecular siab nrog cov pawg polar. Thaum RDP sib xyaw nrog cov khoom EPS, qhov tsis yog-polar hauv cov saw hlau tseem ceeb ntawm cov hmoov polymer yuav nqus tau nrog qhov tsis yog-polar ntawm EPS. Cov pawg polar hauv cov polymer tau taw qhia sab nraud ntawm qhov chaw ntawm cov khoom EPS, ua rau cov khoom EPS hloov pauv ntawm hydrophobic mus rau hydrophilic. Vim yog kev hloov pauv ntawm qhov chaw ntawm cov khoom EPS los ntawm cov hmoov polymer, qhov teeb meem uas cov khoom EPS yooj yim ntsib dej tau daws. Cov teeb meem loj ntawm cov khoom mortar delamination. Lub sijhawm no, thaum ntxiv cement thiab do, cov pawg polar uas tau nqus rau ntawm qhov chaw ntawm cov khoom EPS cuam tshuam nrog cov khoom cement thiab sib xyaw ua ke, uas ua rau kev ua haujlwm ntawm EPS rwb thaiv tsev mortar zoo dua. Qhov no yog qhov cuam tshuam hauv qhov tseeb tias cov khoom EPS yooj yim ntub los ntawm cov cement slurry, thiab lub zog sib txuas ntawm ob qho tau zoo dua.
Tom qab cov emulsion thiab cov hmoov latex redispersible tau tsim ua ib zaj duab xis, lawv tuaj yeem tsim lub zog tensile thiab lub zog sib txuas ntawm cov ntaub ntawv sib txawv. Lawv siv ua tus binder thib ob hauv cov mortar los sib xyaw nrog cov inorganic binder cement, cement thiab polymer feem. Ua si lub zog sib xws thiab txhim kho kev ua tau zoo ntawm cov mortar. Los ntawm kev soj ntsuam cov qauv ntawm cov khoom siv polymer-cement composite, nws tau txiav txim siab tias kev ntxiv cov hmoov latex redispersible tuaj yeem ua rau cov zaj duab xis polymer tsim ib feem ntawm phab ntsa qhov, thiab ua rau cov mortar tsim tag nrho los ntawm lub zog sab hauv, uas txhim kho lub zog sab hauv ntawm cov mortar. Lub zog polymer, yog li ua rau kev ntxhov siab ntawm cov mortar thiab ua rau lub zog kawg nce ntxiv. Txhawm rau kawm txog kev ua tau zoo mus sij hawm ntev ntawm cov hmoov latex redispersible hauv mortar, pom los ntawm kev ntsuas electron microscope, tom qab 10 xyoo, cov qauv ntawm cov polymer hauv mortar tsis tau hloov pauv, tswj kev sib txuas ruaj khov, lub zog flexural thiab lub zog compressive nrog rau Hydrophobic zoo. Siv cov hmoov latex uas tawg ua cov khoom tshawb fawb, kawm txog kev tsim cov pobzeb uas muaj zog sib txuas, thiab pom tias tom qab cov polymer qhuav ua ib zaj duab xis, zaj duab xis polymer tsim kev sib txuas yooj ywm ntawm cov mortar thiab cov pobzeb ntawm ib sab tes, thiab ntawm qhov tod tes, Cov polymers hauv cov mortar ua rau cov huab cua ntawm cov mortar nce ntxiv, cuam tshuam rau qhov tiaj tus thiab qhov ntub ntawm qhov chaw, thiab tom qab ntawd thaum lub sijhawm teeb tsa, cov polymers kuj muaj txiaj ntsig zoo rau cov txheej txheem hydration thiab shrinkage ntawm cov cement. Cov nplaum, cov no tag nrho pab ua kom muaj zog sib txuas.
Ntxiv cov hmoov latex uas rov tawg ua dua tshiab rau hauv cov mortar tuaj yeem txhim kho lub zog sib txuas nrog lwm cov ntaub ntawv, vim tias cov kua dej ntawm cov hmoov polymer hydrophilic thiab cov cement suspension nkag mus rau hauv cov qhov hws thiab cov hlab ntsha ntawm lub matrix, thaum cov hmoov latex nkag mus rau hauv cov qhov hws thiab hauv cov hlab ntsha. Cov zaj duab xis sab hauv yog tsim thiab adsorbed khov kho rau ntawm qhov chaw ntawm lub substrate, yog li ua kom muaj zog sib txuas zoo ntawm cov khoom siv gelled thiab lub substrate.
Lub sijhawm tshaj tawm: Lub Rau Hli-16-2023