Recispersible polymer hmoov (RDP) yog ib qho tseem ceeb ntawm cov ntaub ntawv tsim kho niaj hnub, muab cov khoom siv txhim kho kom muaj ntau yam qauv. Nrog nws cov xeeb ceem tshwj xeeb thiab ntau yam kev siv, Rdpplays lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm, kav dej ruaj khov, thiab kev tsim kho cov khoom siv.
1. Taw qhia rau recispersible polymer hmoov
Recispersible polymer hmoov yog dawb-ntws, hmoov dawb tau los ntawm cov tsuag-kom qhuav ntawm polymer dispersions. Cov hmoov no muaj kev sib xyaw ntawm cov hluavtaws hluavtaws xws li vinyl acetate ethylene (vinyl acetate (vinyl acetate (vinyl acetate (E-vC), thiab lwm tus. Cov txheej txheem ntau lawm yuav hloov dua siab tshiab ntawm cov kua tawg ua cov hmoov tawv kom zoo thaum khaws cov khoom siv polymer.
2. Chemistry ntawm Redispersible polymer hmoov
Lub chemistry ntawm RDP revolves nyob ib ncig ntawm Monomers los tsim cov polymer ruaj khov, uas yog tshuaj tsuag tom qab tau txais daim hmoov hmoov. Cov ntsiab lus tseem ceeb cuam tshuam cov khoom ntawm RDPAnclude:
Polymer muaj pes tsawg leeg: cov polymers sib txawv muaj cov khoom xws li hloov pauv ntau yam xws li yoog tau zoo, kev ua yeeb yam, thiab dej tsis kam. Piv txwv li, Vae-based RPPs muaj npe rau lawv cov adhesion zoo heev rau ntau hom substrates.
Cov neeg sawv cev hla: Cov neeg sawv cev hla tuaj yeem txhim kho cov dej tsis kam thiab tshuab lub zog ntawm RPP. Cov ntoo khaub lig sib xws suav nrog polyfunctional ziriridines thiab di-ownocyanates.
Ntxiv: Ntxiv zoo li cov dispersants, surfactants, thiab cov yas nqus tau sib xyaw los txhim kho ruaj khov, ntws cov khoom, thiab hloov pauv ntawm RDPFormulations.
3. Kev tsim qauv txheej txheem ntawm redispersible polymer hmoov
Kev tsim RDP cuam tshuam ntau theem:
Polymerization: Monomers yog polymerized nyob rau hauv cov tshuaj aqueous nyob rau hauv kev tswj hwm cov cai los ua cov polymer ruaj khov.
Kev Hloov Pos-Polymerization: xws li kev siv tshuaj ntsuab ntxiv, xws li kev tiv thaiv kev tiv thaiv lossis crosslinkers, tuaj yeem ntxiv rau titor cov khoom ntawm cov polymer dispersion.
Txau-kom qhuav: lub polymer dispersion yog atomized rau hauv cov tee dej zoo thiab qhuav hauv huab cua kub los ua cov khoom noj. Cov txheej txheem ua kom muaj kev cia siab ntawm cov polymer cov khoom lag luam thaum hloov cov dispersion rau hauv cov hmoov dawb-ntws.
4. Cov ntawv thov ntawm recispersible polymer hmoov
RDP pom ntau yam kev lag luam thiab cov ntawv thov:
Kev Tsim Kho: RDP yog qhov tseem ceeb hauv cov xis kawm xws li cov khoom xyaw ua ke, kev ua kom zoo nkauj, mortars, thiab guts. Nws txhim kho adhesion, yooj, dej tsis, thiab kev ua haujlwm ntawm cov qauv no.
Cov xim tsev thiab cov xim pleev xim: RDP txhim kho zaj duab xis, adhesion, thiab cov xim tsev muaj dej khov kho thiab pleev xim. Nws tseem ua hauj lwm raws li kev ntseeg rheology, txhim kho cov khoom thov ntawm cov txheej txheej no.
Textiles: Hauv kev lag luam textile, RDP tau siv los ua phau ntawv tsis yog-woven, muab lub zog, yoog raws thiab ntxuav tawm tsam cov khoom kawg.
Kws Tshuaj: RDP pabcuam ua lub stabilizer thiab binder hauv cov kws tshuaj tsim, enterning tswj kev tso tawm thiab txhim kho cov khoom xyaw tsis muaj zog ntawm cov khoom xyaw.
5. Cov txiaj ntsig ntawm Redispersible polymer hmoov
Kev siv RDP muaj ntau yam zoo:
Txhim kho Adhesion: RDP txhim kho cov khoom siv ntawm kev tsim kho rau ntau yam substrates, uas ua rau muaj zog thiab ntau dua ruaj ruaj bonds.
Txhim Kho Yooj Yim: ntxiv rau ntawm RDP imparts yooj yim rau cov qauv ua rau cov qauv ntawm cov khoom tawg thiab txhim kho tag nrho cov khoom siv.
Dej Tsis kam: RDP muab cov dej tsis kam zoo, ua rau nws siv nyob rau hauv cov ntawv thov sab nrauv thiab chaw pw ntub dej.
Kev ua haujlwm: RDP txhim kho kev ua haujlwm thiab cov ntaub ntawv tsim kho, tso cai rau kev thov kom yooj yim dua thiab ua tiav smoother.
Kev Nyab Xeeb: RDP pab kom cov qauv ntawm cov khoom lag luam ib puag ncig los ntawm kev siv cov khoom siv tsoos thiab txhim kho lub sijhawm ua haujlwm ntev ntawm kev tsim kho.
6. Yav Tom Ntej Cov Qauv thiab Kev Tsim Kho
Lub neej yav tom ntej ntawm RDP lus dag nyob rau hauv kev tshawb fawb txuas ntxiv thiab kev tsim kho tshiab los txhim kho nws cov peev txheej thiab kev siv. Cov chaw tseem ceeb ntawm lub homphiaj suav nrog:
Kev txhim kho cov kev daws teeb meem muaj kev ruaj khov: kev siv zog tab tom tsim cov ntaub ntawv rdp thiab cov txheej txheem tshiab hauv nroog kom txo qis kev cuam tshuam ib puag ncig.
Cov kev ua tau zoo ntxiv: kev sib txuam ntawm cov kev sib xyaw ua ke ntxiv thiab nanomaterials tuaj yeem txhim kho cov khoom ntawm RDP, ua kom cov ntawv thov tshiab thiab txhim kho kev ua haujlwm tshiab.
Customized cov qauv tsim: Tailoring RDP kom tau raws li cov ntawv thov yuav tsum muaj kev ua txuas ntxiv thiab ua tau zoo rau ntau yam lag luam.
7. Xaus
Recispersible polymer hmoov ua cov ntaub ntawv tsim kho tseem ceeb hauv cov ntaub ntawv tsim kho tam sim no, muab cov nplaum hloov kho, kev tsis kam, dej tsis kam, thiab muaj kev ruaj khov. Nrog nws cov chemistry tshwj xeeb, cov txheej txheem tsim qauv, thiab ntau yam kev siv, RDP yog ua rau tsav tsheb tshiab thiab nce qib hauv ntau yam lag luam. Los ntawm kev nkag siab txog cov chemistry, cov txheej txheem tsim khoom, kev siv, thiab cov peev txheej muaj peev xwm tsim tau ruaj, cov khoom lag luam zoo rau yav tom ntej.
Lub Sijhawm Post: Feb-18-2025