Redispersible Polymer Hmoov (RDP)yog ib qho tseem ceeb additive nyob rau hauv kev tsim kho kev lag luam thiab yog dav siv nyob rau hauv ntau yam tsev cov ntaub ntawv, tshwj xeeb tshaj yog nyob rau hauv kev hloov kho ntawm cement-based, gypsum-based thiab lwm yam khoom siv hmoov qhuav. . Nws yog cov hmoov hloov los ntawm dej-raws li latex (polymer emulsion) los ntawm cov txheej txheem tshuaj tsuag kom qhuav thiab muaj dej zoo dua.
1. Txhim kho kev sib raug zoo
Redispersible latex hmoov tuaj yeem txhim kho qhov adhesion ntawm cov ntaub ntawv hauv tsev, tshwj xeeb tshaj yog cov cement mortars thiab gypsum mortars. Thaum nws ua ke nrog cov cement lossis lwm yam khoom siv tsis zoo, nws tuaj yeem tsim cov yeeb yaj kiab polymer, uas muaj lub zog sib txuas nrog rau saum npoo ntawm substrate, yog li txhim kho lub zog sib txuas ntawm cov txheej los yog mortar. Tshwj xeeb tshaj yog, cov mortar txheej tuaj yeem ua raws li kev ruaj ntseg ntawm cov chaw xws li masonry thiab pob zeb, txo qhov tshwm sim ntawm spalling thiab tawg.
2. Txhim kho qhov tawg tsis kam
Ntxiv cov hmoov latex redispersible rau cov cement mortar thiab lwm cov ntaub ntawv hauv tsev tuaj yeem txhim kho lawv cov kev sib tsoo. Lub polymer hais nyob rau hauv cov hmoov latex tsim ib tug network qauv nyob rau hauv cov cement, uas muaj peev xwm tsim ib theem reinforcing nyob rau hauv cov khoom, yog li txhim kho cov khoom tawg kuj. Rau cov txheej txheej tuab los yog qhov kub thiab txias thiab ib puag ncig qhuav, qhov tshwm sim ntawm cov kab nrib pleb yog ib qho teeb meem tshwm sim, thiab ntxiv RDP tuaj yeem txo qhov tshwm sim ntawm qhov teeb meem no.
3. Txhim kho qhov yooj yim
Thaum cov cement mortar lossis lwm cov khoom siv hmoov qhuav ntsib qhov kub thiab txias, lawv yuav ntsws los yog nthuav vim sib txawv thermal expansion coefficients, uas ua rau tawg los yog shelling ntawm cov khoom. Redispersible latex hmoov tuaj yeem ua rau kom cov ntaub ntawv hloov tau yooj yim, tso cai rau cov khoom siv hauv tsev kom zoo dua rau kev deformation thaum ntsib qhov kub thiab txias, txo qhov ua rau tawg. Cov polymer ntxiv muaj qee qhov elasticity, tso cai rau cov tshuaj khib lossis cov txheej txheem kom zoo dua nrog cov kev ntxhov siab sab nraud.
4. Txhim kho dej tsis kam thiab impermeability
Redispersible latex hmoov muaj cov nyhuv dej tsis zoo thiab tuaj yeem txhim kho cov dej tsis kam thiab impermeability ntawm cov cement mortar. Cov zaj duab xis polymer tsim los ntawm cov hmoov latex hauv cov cement system muaj cov dej permeability tsawg thiab yog li ntawd tuaj yeem txhim kho kev ua tau zoo ntawm cov tshuaj khib nyiab hauv cov av ntub lossis dej mus ntev. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog rau cov xim sab nrauv, phab ntsa hauv qab daus, chav dej thiab lwm qhov chaw uas raug dej mus ntev.
5. Txhim khu kev tiv thaiv kev ua qias tuaj
Cement lossis plaster-based cov ntaub ntawv raug cuam tshuam rau kev kis kab mob, av, lossis pwm loj hlob thaum siv. Tom qab ntxiv redispersible latex hmoov, ib co antifouling txheej yuav tsim nyob rau saum npoo ntawm cov khoom, uas yuav ua tau zoo txo cov adhesion ntawm plua plav rau saum npoo thiab inhibit qhov kev loj hlob ntawm pwm thiab kab mob. Qhov no tsis tsuas yog txhim kho kev zoo nkauj ntawm cov khoom siv hauv tsev, tab sis kuj txuas ntxiv nws lub neej kev pab cuam.
6. Txhim kho khov-thaw tsis kam
Hauv cov cheeb tsam txias, cov khoom siv hauv tsev feem ntau raug rau lub voj voog khov-thaw thiab ua rau tawg lossis tev. Los ntawm kev ntxiv cov hmoov latex redispersible, qhov khov-thaw kuj ntawm cov khoom tuaj yeem txhim kho tau zoo. Lub polymer nyob rau hauv cov hmoov latex ua ke nrog cov khoom siv dej hauv cov cement los txhim kho cov compactness ntawm cov khoom, txo cov dej nkag thiab nthuav cov dej thaum lub sij hawm khov-thaw, yog li txo qhov kev puas tsuaj los ntawm lub voj voog khov-thaw.
7. Txhim kho kev tsim kho kev ua haujlwm
Redispersible latex hmoov tuaj yeem txhim kho daim ntawv thov cov khoom ntawm mortars thiab coatings, ua rau lawv yooj yim dua los tuav thiab siv. Vim tias cov hmoov latex muaj qhov ntub dej zoo thiab tawg, nws tuaj yeem ua rau cov tshuaj khib nyiab zoo dua thiab ua haujlwm tau zoo, kom tsis txhob muaj teeb meem kev tsim kho ntau dua vim qhov ziab dhau los yog tsis txaus adhesion. Qhov no tsis tsuas yog txhim kho kev tsim kho kom zoo, tab sis kuj ua kom muaj kev tsim kho zoo.
8. Ua kom ruaj khov
Raws li cov khoom siv hauv tsev muaj hnub nyoog, lawv qhov kev ua tau zoo yuav maj mam degrade vim muaj kev hloov hauv ib puag ncig. Qhov sib ntxiv ntawm redispersible latex hmoov tuaj yeem txhim khu kev ruaj ntseg ntawm cov cement mortar lossis lwm cov substrates, tshwj xeeb tshaj yog nyob rau hauv lub ntsej muag ntawm huab cua huab cua, huab cua puag ncig thiab lwm yam sab nraud, kom muaj kev pab lub neej ntev. Qhov no yog qhov tseem ceeb heev rau cov tsev uas raug kev nyuaj siab ntev, xws li cov phab ntsa sab nrauv, kho txoj kev, thiab txuas hniav.
9. Txhim kho kev ua haujlwm thiab kev kho tus kheej
Redispersible latex hmoov kuj tuaj yeem txhim kho tus kheej lub peev xwm ntawm cov ntaub ntawv. Thaum muaj kev puas tsuaj me me, cov khoom siv tuaj yeem kho nws tus kheej los ntawm kev hloov pauv me me ntawm cov polymer, txo cov dej noo nkag thiab puas los ntawm cov kab nrib pleb. Tsis tas li ntawd, nws tuaj yeem txhim kho kev sib koom ua ke thiab kev laus ntawm cov tshuaj khib nyiab thiab txuas ntxiv nws lub sijhawm ua haujlwm.
Lub luag hauj lwm ntawm redispersible latex hmoov nyob rau hauv kev tsim kho daim ntawv thov yog multi-faceted. Nws tsis tsuas yog txhim kho lub cev lub cev ntawm cov khoom siv hauv tsev, tab sis kuj txhim kho nws txoj kev tsim kho, ua haujlwm ntev thiab kev tiv thaiv ib puag ncig. Los ntawm kev txhim kho kev ua tau zoo hauv ntau qhov ntev xws li daim ntawv cog lus lub zog, tawg tsis kam, dej tsis kam, muaj kuab paug tsis kam, khov-thaw tsis kam, thiab lwm yam.,RDPmuab ntau txoj hauv kev rau kev tsim kho kev lag luam, tshwj xeeb tshaj yog nyob rau hauv cov kev xav tau ntawm kev tsim kho thiab cov chaw hnyav. ib puag ncig, nws muaj qhov tseem ceeb ntawm kev siv tus nqi. Nyob rau hauv lub neej yav tom ntej, raws li kev tsim kho kev lag luam qhov kev thov rau high-kev ua tau zoo, cov ntaub ntawv siab-durability nce, daim ntawv thov kev cia siab ntawm redispersible latex hmoov kuj yuav dav dua.
Post lub sij hawm: Nov-08-2024