Redispersible latex hmoov (RDP)yog ib tug redispersible polymer hmoov ua los ntawm cov tshuaj tsuag kom qhuav tshuab. Nws muaj qhov zoo adhesion, yoog raws, tawg tsis kam thiab dej tsis kam, thiab siv dav hauv cov khoom siv hauv tsev. nruab nrab. EPS (expanded polystyrene) thermal rwb thaiv tsev mortar yog ib lub teeb yuag thermal rwb thaiv tsev cov ntaub ntawv tsim nrog EPS hais raws li lub teeb yuag aggregate, xis mas li cementing khoom, thiab lwm yam additives. Taw qhia redispersible latex hmoov rau hauv EPS rwb thaiv tsev mortar tuaj yeem txhim kho nws lub cev thiab txhua yam khoom thiab kev tsim kho.
1. Lub mechanism ntawm kev txiav txim ntawm redispersible latex hmoov nyob rau hauv EPS rwb thaiv tsev mortar
Raws li cov khoom siv polymer, RDP tsim cov yeeb yaj kiab polymer txuas ntxiv los ntawm kev rov ua dua tshiab thaum lub sijhawm hydration. Cov yeeb yaj kiab no tuaj yeem pleev xim rau cov khoom siv cementitious, lub teeb yuag aggregates thiab EPS hais nyob rau hauv mortar, yog li txhim kho lub zog sib txuas ntawm cov khoom. Tsis tas li ntawd, cov yeeb yaj kiab polymer tuaj yeem sau cov kab nrib pleb thiab qhov hws hauv cov mortar, yog li txhim kho cov khoom siv compactness thiab impermeability. Cov yam ntxwv hloov tau ntawm RDP pab daws qhov teeb meem tawg ntawm EPS rwb thaiv tsev mortar tshwm sim los ntawm qhov sib txawv ntawm qhov kub thiab txias.
2. cuam tshuam rau kev ua haujlwm ntawm EPS rwb thaiv tsev mortar
(1) Txhim kho kev sib raug zoo
Kev taw qhia ntawm RDP tuaj yeem txhim kho kev sib raug zoo ntawm EPS rwb thaiv tsev mortar. Kev tsim cov yeeb yaj kiab polymer tsis tsuas yog txhim kho lub zog sib txuas ntawm EPS cov khoom thiab cov matrix, tab sis kuj tseem txhim kho kev sib koom ua ke ntawm cov tshuaj khib thiab cov phab ntsa hauv paus, yog li txo qhov kev pheej hmoo ntawm kev tawg thiab txhim kho lub zog ntawm lub cev.
(2) Txhim khu kev tiv thaiv tawg
VimRDPmuaj qhov yooj yooj yim, cov yeeb yaj kiab polymer tsim los ntawm nws tuaj yeem ua haujlwm tsis zoo rau kev ntxhov siab thiab ncua kev nthuav dav ntawm microcracks. Kev tshawb fawb qhia tau hais tias lub zog flexural thiab tensile zog ntawm EPS rwb thaiv tsev mortar tov nrog ib tug tsim nyog tus nqi ntawm RDP yog ho txhim khu kev qha, uas yuav pab txhim kho lub zuag qhia tag nrho tawg tiv thaiv ntawm lub mortar.
(3) Txhim kho kev tsim kho kev ua haujlwm
RDP tuaj yeem txhim kho kev ua haujlwm thiab kev tuav dej ntawm EPS rwb thaiv tsev mortar thiab txhim kho kev ua haujlwm thaum lub sijhawm tsim kho. Nws cov dej tuav cov khoom pab kom ncua cov dej poob ntawm cov mortar, yog li xyuas kom cov txheej hauv paus yog dej txaus thiab txhim kho lub zog thaum ntxov.
(4) Txhim kho durability
Cov dej tsis muaj dej thiab tshuaj lom neeg ntawm RDP zaj duab xis ua haujlwm zoo txhim kho qhov khov-thaw tsis kam thiab carbonation tsis kam ntawm EPS rwb thaiv tsev mortar. Qhov no yog qhov tseem ceeb tshwj xeeb rau kev ua haujlwm ntev ntawm cov khoom siv.
(5) Kev hloov pauv hauv qhov ntom ntom
Kev taw qhia ntawm RDP muaj kev cuam tshuam me ntsis ntawm qhov ntom ntawm mortar, tab sis kev txhim kho ntawm lub zog compressive yuav tsum tau tswj cov koob tshuaj. RDP ntau dhau tuaj yeem ua rau txo qis hauv compression tsis kam, yog li tus piv yuav tsum tau ua kom zoo dua qub thaum txaus siab rau lwm yam khoom.
3. Engineering tseem ceeb
Hauv kev siv engineering tiag tiag, EPS rwb thaiv tsev mortar yuav tsum muaj ob qho tib si zoo thermal rwb thaiv tsev thiab cov khoom siv kho tshuab, thaum ua tau raws li qhov yuav tsum tau ua ntawm kev tsim kho yooj yim thiab ua haujlwm siab. Raws li qhov hloov pauv tseem ceeb, redispersible latex hmoov muab ntau yam kev ua tau zoo ntawm kev daws teeb meem rau EPS rwb thaiv tsev mortar. Ntawm ib sab, daim ntawv thov ntawm RDP zoo heev txhim kho qhov adhesion thiab tawg tsis kam ntawm cov tshuaj khib thiab txo qhov kev pheej hmoo ntawm cov txheej rwb thaiv tsev ntog thiab tawg; Ntawm qhov tod tes, nws txoj kev txhim kho hauv kev tsim kho kev ua tau zoo thiab kev ua haujlwm ntev ntawm cov mortar ua rau EPS rwb thaiv tsev mortar zoo dua rau cov qauv tsim hluav taws xob txuag hluav taws xob.
Redispersible latex hmoovtuaj yeem txhim kho kev sib raug zoo, kev ua haujlwm tawg, kev tsim kho thiab ua haujlwm ntev ntawm EPS rwb thaiv tsev mortar los ntawm kev tsim cov yeeb yaj kiab polymer. Hauv kev siv engineering, kev ua kom zoo tshaj plaws ntawm qhov ntau npaum thiab kev siv ntawm RDP tuaj yeem ua tiav qhov zoo tshaj plaws ntawm cov khoom siv. Kev tshawb fawb yav tom ntej tuaj yeem tshawb nrhiav kev sib koom ua ke ntawm RDP thiab lwm yam kev hloov kho kom tau raws li qhov xav tau ntawm cov rwb thaiv tsev thermal mortars hauv cov xwm txheej sib txawv.
Post lub sij hawm: Nov-20-2024