Hmoov Polymer uas yaj tau dua (RDP), ua ib qho khoom siv organic nplaum tseem ceeb hauv cov txheej txheem niaj hnub thermal rwb thaiv tsev mortar, feem ntau ua rau cov mortar lub zog sib txuas, kev ywj pheej, kev tiv thaiv tawg, thiab kev ua haujlwm tau zoo. Txawm li cas los xij, hauv cov txheej txheem rwb thaiv tsev phab ntsa sab nraud uas raug rau cov chaw nyuaj xws li tshav ntuj, nag, lub voj voog thermal, thiab cua yaig dhau sijhawm ntev, qhov kev tiv thaiv huab cua ntawm RDP dhau los ua qhov tseem ceeb txiav txim siab lub neej ua haujlwm ntawm lub kaw lus. Kev tshuaj xyuas cov yam ntxwv ntawm zaj duab xis, cov qauv polymer, thiab kev cuam tshuam rau cov mortar microstructure ntawm RDP tso cai rau kev ntsuam xyuas ntau dua ntawm nws qhov kev tiv thaiv huab cua hauv cov mortar rwb thaiv tsev thermal.
1.Qhov kev tiv thaiv huab cua ntawm RDP hauv cov khoom siv rwb thaiv tsev thermal feem ntau yog los ntawm nws cov qauv polymer network tom qab tsim zaj duab xis. RDP feem ntau yog tsim los ntawm cov kab ke polymer xws li ethylene-vinyl acetate (VAE) thiab acrylates, muaj kev ywj pheej zoo thiab tiv taus UV laus. Thaum RDP rov tawg dua thaum lub sijhawm ua kom cov khoom siv tawv thiab kho nrog cov khoom siv cementitious inorganic, nws tsim cov zaj duab xis polymer txuas ntxiv mus rau hauv cov qhov hws mortar thiab ntawm qhov chaw sib sau ua ke. Cov zaj duab xis nyias no tsis tsuas yog txhim kho kev sib txuas ntawm cov khoom sib txuas xwb tab sis kuj txhim kho qhov tsis kam dej thiab kev tiv thaiv khov-thaw ntawm cov khoom siv mortar, ua rau nws tswj tau qhov kev ua tau zoo ruaj khov thaum lub sijhawm ntev thermal cycling.
2.RDP pab txhawb rau qhov tawg tsis kam thiab yooj ywm ntawm cov khoom siv rwb thaiv tsev thermal, yog li txhim kho nws txoj kev tiv thaiv huab cua. Cov txheej txheem rwb thaiv tsev phab ntsa sab nraud feem ntau raug thermal nthuav dav thiab kev ntxhov siab vim muaj qhov sib txawv ntawm qhov kub thiab txias sab nraud. Yog tias cov khoom siv rwb thaiv tsev, ua ib txheej tiv thaiv, tsis muaj kev ywj pheej, nws yooj ywm heev rau cov kab nrib pleb me me, ua rau dej nag nkag mus rau hauv thiab ua rau kev laus sai dua. Qhov elasticity ntawm zaj duab xis RDP nqus tau zoo, txo qhov kev ntxhov siab sab hauv uas tshwm sim los ntawm kev hloov pauv ntawm cov khoom siv lossis kev hloov pauv kub, yog li txo qhov tawg thiab txhim kho qhov ruaj khov ntawm cov qauv khoom siv rwb thaiv tsev nyob rau hauv cov xwm txheej sab nraum zoov ntev.
3.Kev txhim kho RDP hauv kev tiv thaiv dej ntawm cov mortar kuj yog qhov qhia tseem ceeb ntawm kev tiv thaiv huab cua. Cov mortar rwb thaiv tsev thermal yuav tsum tswj hwm qhov nqus dej tsawg hauv cov chaw ntub dej los nag lossis noo noo. Qhov hydrophobicity zoo heev ntawm RDP polymer zaj duab xis txo qis capillary dej nqus, thaiv cov dej nkag mus, thiab txo qhov tshwm sim ntawm kev puas tsuaj khov-thaw. Cov kev tshawb fawb tau qhia tias kev ntxiv RDP kom raug rau cov mortar rwb thaiv tsev thermal tuaj yeem txo nws qhov nqus dej los ntawm 30% txog 50%, thiab tseem txhim kho nws qhov kev khaws cia lub zog tom qab kev immersion ntev hauv dej, yog li ua kom ntseeg tau tias lub zog ntawm cov qauv system.
4.Kev txhim kho RDP hauv qhov ceev ntawm cov mortar kuj ua rau nws tsis kam laus. Tom qab kev tawg, cov khoom polymer sau cov qhov chaw ntawm cov khoom siv cement hydration, txhim kho qhov faib ntawm qhov loj me thiab tsim kom muaj cov qauv sib npaug thiab ntom dua hauv cov mortar. Qhov ceev no tsis yog tsuas yog txhim kho cov khoom siv kho tshuab xwb tab sis kuj ua rau cov mortar tiv taus cov yam ntxwv corrosive sab nraud (xws li carbon dioxide thiab chloride ntsev), yog li ntawd txuas ntxiv lub neej kev pabcuam ntawm lub kaw lus rwb thaiv tsev thermal.
5.Nws yog ib qho tsim nyog sau tseg tias ntau hom RDP sib txawv hauv lawv qhov kev tiv thaiv huab cua. Piv txwv li, VAE-RDP uas yoog tau zoo dua muaj kev tiv thaiv khov-thaw thiab tawg zoo dua; thaum cov acrylic RDP ntshiab ua tau zoo dua hauv kev tiv thaiv UV laus thiab kev tiv thaiv daj. Yog li ntawd, hauv kev siv ua haujlwm, hom thiab qhov ntau ntawm RDP yuav tsum tau xaiv raws li cov yam ntxwv ntawm lub kaw lus thermal insulation mortar, qhov chaw tsim kho, thiab lub neej tsim.
6.Qhov zoo ntawm kev tiv thaiv huab cua ntawmRDPHauv cov tshuaj pleev thaiv cua sov feem ntau pom tseeb hauv kev ruaj khov ntawm cov qauv tsim zaj duab xis, kev ywj pheej zoo dua, kev tiv thaiv dej zoo dua, thiab kev ua kom zoo dua microstructure. Cov yam ntxwv no ua rau nws tiv taus kev puas tsuaj los ntawm kev hloov pauv huab cua ntev ntawm phab ntsa sab nraud, yog li txhim kho qhov ruaj khov thiab lub neej ua haujlwm ntawm lub kaw lus rwb thaiv tsev sab nraud.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-28-2025