Txhim kho lub zog ntawm cov pobzeb nplaum yog qhov tseem ceeb rau kev ua kom ruaj khov thiab ua haujlwm ntev ntawm cov vuas.Hauv qhov no, Redispersible Polymer Powder (RDP), ua ib qho tseem ceeb ntxiv, ua lub luag haujlwm tseem ceeb.
1. Cov yam ntxwv tseem ceeb ntawm redispersible latex hmoov
RDP yog cov hmoov redispersible uas ua los ntawm cov polymer emulsion los ntawm cov txheej txheem ziab kom qhuav.Thaum RDP yog tov nrog dej, nws redisperses los tsim ib qho emulsion, rov qab nws cov khoom qub.Cov cuab yeej no ua rau RDP ib qho tseem ceeb hloov kho rau cov nplais nplaum.
2. Mechanism los txhim kho kev sib raug zoo
2.1 Ua kom yooj yim thiab tawg ua haujlwm
Qhov sib ntxiv ntawm RDP tuaj yeem ua rau kom yooj yim thiab tawg ua haujlwm ntawm cov nplais nplaum.Cov yeeb yaj kiab polymer tsim tuaj yeem nqus tau zoo thiab tsis muaj kev ntxhov siab sab nraud thiab txo cov kab nrib pleb los ntawm shrinkage ntawm substrate los yog thermal expansion thiab contraction.Qhov kev hloov pauv no pab cov vuas kom muaj zog nyob rau hauv ntau yam kev ntxhov siab, yog li ua kom muaj zog tag nrho.
2.2 Txhim kho ntub tack thiab qhib lub sijhawm
RDP tuaj yeem txhim kho qhov ntub dej ntawm cov nplais pobzeb nplaum, tso cai rau kev ua kom zoo dua qub ntawm cov vuas ceramic thiab substrates thaum tsim kho.Nyob rau tib lub sijhawm, RDP txuas ntxiv lub sijhawm qhib ntawm pobzeb nplaum, uas yog, lub sijhawm ua haujlwm ntawm daim ntawv thov mus rau pobzeb tso.Qhov no muab sijhawm rau cov neeg ua haujlwm txaus los hloov kho thiab muab tso rau, kom ntseeg tau tias qhov zoo ntawm pasting.
2.3 Nce cohesive zog
RDP nce qhov sib zog ua ke ntawm cov nplais nplaum los ntawm kev tsim cov qauv peb sab hauv nws.Cov qauv mesh no dries los tsim ib lub network muaj zog polymer uas ua rau muaj zog tag nrho ntawm cov nplaum, yog li txhim kho pobzeb adhesion.
3. Muaj feem cuam tshuam
3.1 Ntxiv tus nqi ntawm RDP
Tus nqi ntawm RDP ntxiv ncaj qha cuam tshuam rau kev ua haujlwm ntawm cov nplais nplaum.Ntxiv qhov tsim nyog ntawm RDP tuaj yeem txhim kho kev sib raug zoo, tab sis kev sib ntxiv ntau dhau tuaj yeem ua rau cov nqi nce ntxiv thiab txo kev tsim kho.Yog li ntawd, formulation tsim yuav tsum tau optimized raws li tej kev cai.
3.2 Hom RDP
Ntau hom RDP muaj cov yam ntxwv ua haujlwm sib txawv.Feem ntau siv RDPs suav nrog vinyl acetate-ethylene copolymer (VAE) thiab vinyl acetate-ethylene-vinyl chloride (VAE-VeoVa), uas txhua tus muaj qhov zoo hauv kev txhim kho kev yooj yim, dej tsis kam thiab kev sib khi lub zog.Xaiv hom RDP yog qhov tseem ceeb rau kev ua tiav cov txiaj ntsig zoo.
4. Daim ntawv thov piv txwv
Hauv kev siv tswv yim, RDP tau siv dav rau kev hloov kho cov nplais pobzeb nplaum.Piv txwv li, nyob rau hauv cov av noo ib puag ncig xws li chav ua noj thiab chav dej, pobzeb adhesives ntxiv nrog RDP nthuav tawm cov dej zoo dua thiab kev sib khi lub zog.Tsis tas li ntawd, nyob rau hauv pem teb cua sov systems, qhov kub thiab txias hloov ntau zaus, RDP-txhim kho cov nplais nplaum nplaum tuaj yeem muab cov cua sov zoo dua thiab ruaj khov.
5. Txoj kev loj hlob yav tom ntej
Nrog kev nce qib txuas ntxiv ntawm cov cuab yeej siv hauv tsev, daim ntawv thov kev cia siab ntawm RDP yuav dav dua.Cov lus qhia kev tshawb fawb yav tom ntej yuav suav nrog kev tsim RDPs tshiab los txhim kho kev ua tau zoo ntawm cov nplais nplaum, nrog rau kev txhim kho cov qauv tsim kom txo tau cov nqi thiab txhim kho kev tsim kho.Tsis tas li ntawd, kev tshawb fawb thiab kev loj hlob ntawm ib puag ncig tus phooj ywg RDP tseem yuav yog ib qho kev taw qhia tseem ceeb kom tau raws li cov kev xav tau ntawm cov vaj tsev ntsuab.
Redispersible latex hmoov (RDP) ua lub luag haujlwm tseem ceeb hauv kev txhim kho lub zog sib txuas ntawm cov nplais nplaum.RDP tuaj yeem txhim kho kev ua tau zoo ntawm cov pobzeb nplaum los ntawm ntau lub tswv yim xws li kev ua kom yooj yim dua, txhim kho cov ntub dej tack thiab qhib lub sijhawm, thiab muaj zog cohesive.Kev xaiv tsim nyog thiab sib ntxiv ntawm RDP yuav pab ua kom tiav cov txiaj ntsig zoo tshaj plaws thiab ua kom muaj kev ruaj ntseg thiab ua haujlwm ntev ntawm cov vuas.
Post lub sij hawm: Lub Xya hli ntuj-19-2024