Qhia:
Redispersible yas hmoov Putty yog cov khoom siv tau ntau zog hauv tsev siv nyob rau hauv kev kho sab thiab kho cov phiaj xwm. Nws cov dej tau zoo heev yog qhov tseem ceeb hauv kev ua kom muaj zog ntev thiab ruaj khov hauv cov kev sib txawv. To taub cov qauv ntawm cov dej no tiv thaiv yog qhov tseem ceeb rau kev xaiv ua kom zoo thiab txhim kho cov kev ua tau zoo ntawm lub putty.
Cov khoom xyaw thiab cov zaub mov txawv:
Qhov sib xyaw ntawm redispersible yas hmoov puTty feem ntau suav nrog recispersible polymer hmoov, fitters, ntxiv thiab lwm yam kev ua haujlwm. Cov txheej txheem tsim qauv yuav tsum tau ua tib zoo xav txog cov kev sib tw ntawm txhua cov khoom xyaw kom ua tiav cov khoom siv dej tsis xav tau. Redispersible polymer hmoov, feem ntau yog raws li ethylene vinyl acetate (EVA) lossis tertiary vinyl eser carbonate (veova), ua lub hauv paus hauv nruab nrab hauv kev ua haujlwm dej tsis kam.
Recispersible polymer hmoov:
Redispersible polymer hmoov yuj nyob rau cov txheej txheem tshwj xeeb thaum kev tsim khoom uas tso cai rau lawv redisperse hauv dej thiab daim ntawv ruaj khov latex emulsions. Cov cuab yeej no yog qhov tseem ceeb rau kev ua tau zoo ntawm lub putty raws li nws ua cov yeeb yaj kiab txuas ntxiv ua yeeb yaj kiab thaum nws dries. Lub hydrophobic xwm ntawm cov polymer tseem nce dej tsis kam los ntawm cov dej pleev cov dej lwg me thiab tiv thaiv kom lawv los ntawm kev nkag mus rau hauv cov putty matrix.
Fillers thiab Ntxiv:
Ua kom zoo xws li cov calcium carbonate thiab talium carbonate thiab typium hmoov zoo li cov hom putting ntawm lawv cov yam ntxwv thiab txo tus nqi. Tsis tas li ntawd, ntau yam ntxiv xws li hydrophobic cov neeg sawv cev thiab cov dispersants yog koom ua ke los txhim kho cov dej tsis kam thiab dispersion ntawm cov polymer hais. Lub synergy ntawm cov khoom xyaw no pab txhim kho cov dej tag nrho ntawm cov putty.
Kev cuam tshuam interface:
Cov dej tsis kam mechanism cuam tshuam ntawm kev sib cuam tshuam nyuaj ntawm cov kev sib cuam tshuam ntawm polymer hais, cov thawv thiab lwm yam hauv putty matrix. Lub hydrophobic xwm ntawm cov polymer hais ua cov thaiv uas txo cov dej tsis taus. Cov fitters yog kev ua kom haum rau hauv cov txiaj ntsig polymer ntxiv los ntawm kev tsim cov kev tsim txiaj rau cov roj av molecules, txo lawv lub peev xwm kom nkag mus rau lub putty.
Zaj duab xis tsim thiab kho:
Tom qab daim ntawv thov, redispersible looj hmoov zoo li putty ua zaj duab xis nyias raws li nws dries thiab kho. Zaj yeeb yaj kiab no ua cov txheej tiv thaiv, tiv thaiv dej kom tsis txhob ncav cuag lub substrate thiab hloov kho kev ncaj ncees ntawm lub putty. Tus txheej txheem kho tau yog qhov tseem ceeb heev rau kev txhim kho ntawm daim nyias nyias muaj zog, muaj sijhawm ntau thiab qhuav sij hawm ua lub luag haujlwm tseem ceeb ntawm theem no.
Kev Kawm Kawm thiab Kev Siv Cov Tswv Yim:
Kev tshawb nrhiav cov ntaub ntawv thiab cov piv txwv ntawm cov ntawv thov tiag tiag ntawm redispersible yas hmoov putty. Cov piv txwv no tau hais txog qhov ua tau zoo ntawm kev muab cov dej ua haujlwm ntawm ntau yam kev tsim kho phab ntsa, los ntawm sab nraud kho kom haum.
Cov dej tsis kam ntawm redispersible cov hmoov txhuv nplej siab tag nrho yog muaj nws cov hauv paus hauv kev xaiv zoo thiab kev sib cuam tshuam ntawm nws cov khoom tseem ceeb. Ib qho kev nkag siab meej ntawm cov qauv tsim, lub luag haujlwm ntawm cov hmoov nplej polymer, thiab cov kev cuam tshuam nrog kev cuam tshuam rau lub hauv paus rau kev ua haujlwm putty. Kev tshawb fawb txuas ntxiv thiab kev loj hlob hauv thaj chaw no yuav pab hauv kev txhim kho cov dej tsis muaj zog, ua kom lawv txoj kev hloov pauv tau zoo thiab ua tau zoo dua.
Lub Sijhawm Post: Feb-19-2025