Hauv kev tsim kho niaj hnub, kev ua tiav kev ua haujlwm zoo thiab cov nplaum hauv cov ntaub ntawv tsim tsev yog qhov tseem ceeb rau kev ua haujlwm ruaj khov thiab zoo ntawm cov qauv. Redispersible polymer hmoov (RDP) tau tshwm sim los ntawm cov tshuaj ntxiv tseem ceeb uas txhim kho cov khoom no.
To kev nkag siab recispersible polymer hmoov
Redispersible polymer hmoov yog dej-soluble, dawb-cov hmoov nplej tau tsim los ntawm cov tshuaj tsuag-kom qhuav polymer emulsions. Cov hmoov no yog feem ntau siv nyob rau hauv qhuav-mak cug ua qauv. Thaum sib xyaw nrog dej, RDP kev nce mus rau nws thawj emulsion lub xeev, txhim kho cov khoom ntawm lub cug. Feem ntau hom RDP suav nrog Vinyl acetate-ethylene (VAE) copolymers, vinyl ester ntawm versatic acid (veova) copolymers, thiab acrylic polymers.
Txhim Kho Cov Haujlwm Nrog RDP
Kev ua haujlwm ua haujlwm yog hais txog qhov yooj yim uas ib lub cug tshuaj khib lossis pob zeb sib tov tuaj yeem sib xyaw, muab tso, muab sib xyaw, thiab ua tiav yam tsis muaj kev sib xyaw. Kev ua haujlwm zoo yog qhov tseem ceeb rau kom ntseeg tau tias cov sib tov tuaj yeem siv tau zoo thiab ua tau zoo.
Txhim kho kev sib xws thiab ntws: RDP txhim kho cov khoom ntawm cug sib tov, ua rau lawv ntau cov kua thiab yooj yim rau lis. Cov noob polymers txo cov kev sib txhuam ntawm cov khoom siv, ua rau muaj kev sib xyaw smoother. Qhov no yog tau txais txiaj ntsig tshwj xeeb hauv cov ntawv thov uas nyiam pobzeb cov nplaum thiab kev sib txuas ntawm tus kheej, qhov uas muaj kev sib tw thiab kis tau zoo ib yam.
Dej khaws cia: Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm RDP yog nws lub peev xwm los txhim kho dej khaws cia hauv kev sib xyaw. Cov dej kom zoo ua kom ntseeg tau tias cov txheej txheem casas tsis tau ua kom tiav, uas yog qhov tseem ceeb rau kev ua tiav lub zog thiab kav ntev. Txhim kho cov dej hauv kev pheej hmoo kuj yuav txo qhov kev pheej hmoo ntawm cov kab nrib pleb thiab txhim kho qhov ua haujlwm tag nrho los ntawm kev sib xyaw noo noo thiab ua haujlwm tau ntev dua.
Lub sijhawm qhib qhib ncua sijhawm: qhib lub sijhawm hais txog lub sijhawm uas lub tshuaj khib tseem ua haujlwm tau ua haujlwm thiab tuaj yeem sib tsab ntawv tom qab tau thov. RDP txuas ntxiv qhib lub sijhawm, muab cov neeg ua haujlwm hloov tau ntau thiab sijhawm los kho cov khoom siv yam tsis muaj kev sib haum xeeb. Cov cuab yeej no tshwj xeeb tshaj plaws hauv cov huab cua kub uas tau ziab nrawm tuaj yeem yog qhov teeb meem.
Thixotrospy: RDP pab txhawb rau lub tswv yim thixotropic ntawm cov neeg muaj ntsha ua ke, txhais tau tias nws tau ua kom tsis muaj hom phiaj (xws li daim ntawv thov) thiab rov qab siv cov viscosity thaum cov kev ntxhov siab raug tshem tawm. Cov cuab yeej no kom ntseeg tau tias lub tshuaj khib nyiab nyob rau hauv qhov chaw tom qab thov, tiv thaiv sagging lossis slumping hauv cov ntawv thov ntsug.
Txhim Kho Adhesion Nrog Rdp
Adhesion yog lub peev xwm ntawm cov khoom siv mus rau saum npoo nws tau thov rau, uas yog qhov tseem ceeb rau cov qauv kev ntseeg thiab kev tsim kho ntev ntawm kev tsim kho.
Kev Kheling Nto: RDP txhim kho cov nplaum ntawm ntau substrates rau ntau hom substrates, suav nrog cov pob zeb ua, masonry, thiab ntau hom vuas. Cov polymer particated nkag mus rau cov pores thiab tsim cov tshuab sib cuam tshuam, thaum tseem tab tom tsim cov yeeb yaj kiab polymer uas txhim kho cov nplaum.
Yooj taus thiab deformation: RDP imparts yooj ywm rau lub tshuaj khib, uas tso cai rau kom haum me ntsis txav thiab deformations yam tsis muaj kev tawg. Qhov kev hloov pauv no yog qhov tseem ceeb nyob rau hauv cov chaw ib puag ncig uas kub hloov pauv kev hloov pauv thiab cog lus ntawm cov ntaub ntawv. Lub txhim kho kom tau yooj yim txo cov kev ntxhov siab ntawm kev sib khi, tswj cov nplaum muaj zog nyob rau lub sijhawm.
Adhesion rau kev nyuaj substrates: RDP-hloov kho cov ntawv sau tseg kom zoo dua cov nplaum kom nyuaj rau cov av nkos lossis cov vuas qub. Cov polymers txhim kho qhov muaj peev xwm ntub dej muaj peev xwm ntawm cov tshuaj khib, tso cai rau nws kis mus thiab ua raws li cov txheej txheem no. Qhov no muaj txiaj ntsig tshwj xeeb hauv kev kho cov phiaj xwm kev kho tshiab uas cov khoom tshiab yuav tsum sib txuas ua kom zoo rau cov qauv uas twb muaj lawm.
Enhanced durability thiab kuj: cov yeeb yaj kiab polymer tsim los ntawm RDP tiv taus dej, thiab ntau yam tshuaj lom neeg, uas txhim kho lub zog ntawm daim ntawv cog lus. Qhov kev tshoov siab no yog qhov tseem ceeb hauv cov ntawv thov sab nrauv thiab ib puag ncig raug rau noo noo thiab qhov kub hloov pauv.
Cov ntawv thov ntawm RDP hauv kev tsim kho
Kev ua haujlwm ua haujlwm tau zoo thiab cov khoom nplaum muab los ntawm RDP tau ua rau lawv siv thoob plaws hauv ntau yam kev tsim kho:
Cov nplaum nplaum: RDP yog cov khoom xyaw tseem ceeb hauv cov pobzeb nplaum, muab cov ntawv nplaum tsim nyog thiab ua haujlwm rau ob lub vuas. Lub sijhawm qhib kev txhim kho thiab hloov tau meej meej kom muaj kev sib tw muaj zog thiab ruaj khov, txawm tias cov chaw ntub dej zoo li chav dej thiab chav ua noj.
Kev Ntsuas Tus Kheej Kev Ua Si: Hauv kev txo tus kheej sib txuas, RDP paub meej ib qho kev sib txawv, cov khoom sib txawv los ntawm kev txhim kho cov khoom ntws ntawm cov khoom sib xyaw. Lub txhim kho adhesion ua kom muaj compound bonds zoo rau substrate, tiv thaiv delamination.
Kho Mortars: rau kho neeg nplua nyiaj: rau kho cov neeg nplua nyiaj, RDP muab cov nplaum zoo rau cov laus thiab cov pob zeb tshiab, ua kom muaj kev kho kom nruj. Cov haujlwm txhim kho kom tiav rau cov ntawv thov yooj yim, txawm tias hauv kev kho kom haum.
Plasters thiab muab cov khoom siv: RDP txhim kho kev ua haujlwm thiab cov nplaum ntawm plasters thiab cov khoom ntim, ua kom lawv txoj kev ncaj ncees rau phab ntsa thiab tswj lawv txoj kev ncaj ncees nyob rau lub sijhawm. Cov dej ua kom huv tau tiv thaiv kom qhuav ua kom qhuav, txo qis kev pheej hmoo ntawm cov kab nrib pleb.
Thermal rwb thaiv tsev cov tshuab: sab nraud thermal rwb thaiv tsev puas siv cov tshuab (etics), RDP txhim kho cov laug ntawm cov txheej txheem sab nraud thiab lub hauv paus lub tsho rau lub rwb thaiv tsev. Qhov no ua kom cov txheej txheem ua kom ruaj ntseg tag nrho thiab ua haujlwm tau zoo.
Redispersible polymer hmoov ua si lub luag hauj lwm tseem ceeb hauv kev tsim kho tshiab los ntawm kev txhim kho kev ua haujlwm thiab cov nplaum ntawm cov ntaub ntawv muaj nyiaj txiag thiab lwm yam ntaub ntawv hauv tsev. Lawv lub peev xwm los txhim kho kev sib haum, kev siv dej, qhib lub sijhawm, thiab thixotropy ua rau lawv tsis tseem ceeb hauv kev ua tiav kev ua haujlwm zoo. Ib txhij, lawv cov nyiaj pab rau nto sib pab, hloov tau, adhesion kom nyuaj substrates, thiab durability kom ntseeg tau muaj zog thiab kav ntev. Raws li kev tsim kho kev tsim kho txuas ntxiv mus evolve, qhov tseem ceeb ntawm RDP hauv kev tsim cov ntaub ntawv ua haujlwm siab, ruaj khov, thiab cov khoom siv hauv tsev muaj txiaj ntsig zoo.
Lub Sijhawm Post: Feb-18-2025