Redispersible Polymer Powder (RDP) yog ib qho khoom siv ntxiv uas siv dav hauv kev tsim kho, tshwj xeeb hauv kev tsim cov nplais nplaum. RDP yog ib qho kev hloov pauv polymer hmoov tsim los ntawm cov tshuaj tsuag kom qhuav ib qho emulsion ntawm cov polymer, uas tuaj yeem rov ua dua rau hauv kev sib cais thaum sib cuag nrog dej. Cov yam ntxwv tshwj xeeb ntawm RDP no ua rau muaj txiaj ntsig zoo ntawm cov pobzeb nplaum hauv ntau txoj hauv kev, muab cov txiaj ntsig tseem ceeb rau kev tsim kho niaj hnub no.
Txhim kho Adhesion
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm RDP hauv cov nplais nplaum yog qhov kev txhim kho tseem ceeb hauv cov nplaum nplaum. RDP txhim kho cov khoom sib txuas ntawm cov nplais nplaum, ua rau lawv ua raws li ntau yam ntawm cov substrates, suav nrog pob zeb, plaster, thiab cov vuas uas twb muaj lawm. Qhov no yog qhov tseem ceeb tshwj xeeb hauv kev ua kom cov vuas nyob ruaj ntseg hauv qhov chaw dhau sijhawm, txawm tias muaj kev ntxhov siab.
Cov khoom siv polymer hauv RDP coalesce los tsim cov yeeb yaj kiab polymer txuas ntxiv thaum cov nplaum teeb thiab qhuav. Cov yeeb yaj kiab no cuam tshuam nrog cov cement matrix ntawm cov nplaum, tsim kom muaj kev sib raug zoo txhua yam. Tsis tas li ntawd, cov polymer hloov qhov sib cuam tshuam ntawm cov nplaum thiab cov substrate, txhawb kev adhesion zoo dua los ntawm kev txhim kho cov khoom ntub dej thiab kev sib cuag saum npoo. Qhov no ua rau kev txhim kho shear lub zog thiab kev tiv thaiv ntau dua rau lub zog tensile, kom ntseeg tau tias cov vuas tsis yooj yim dislodge.
Nce Flexibility thiab Deformation muaj peev xwm
RDP txhawb nqa qhov yooj yim thiab deformation peev xwm ntawm cov nplais nplaum. Cov cement-based adhesives tuaj yeem ua rau nkig thiab ua rau tawg nyob rau hauv thermal thiab mechanical stresses. Kev koom ua ke ntawm RDP hloov kho cov nplaum nplaum cov khoom siv kho tshuab, ua kom yooj yim thiab elasticity. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov uas cov vuas yuav raug txav los yog kev co, xws li hauv cov chaw tsheb loj lossis ntawm cov substrates uas nthuav dav thiab cog lus vim qhov kub thiab txias.
Cov yeeb yaj kiab polymer tsim los ntawm RDP ua tus choj ntawm cov cementitious matrix thiab cov pobzeb hloov tau, tso cai rau cov nplaum kom nqus tau thiab dissipate kev ntxhov siab. Qhov no txo qhov kev pheej hmoo ntawm cov kab nrib pleb thiab delamination, yog li txhim kho kev ua haujlwm ntev thiab ua haujlwm ntev ntawm cov pobzeb nto.
Txhim kho dej tsis kam
Kev tiv thaiv dej yog ib qho tseem ceeb rau cov nplais nplaum, tshwj xeeb tshaj yog nyob rau hauv cov cheeb tsam uas muaj dej noo, xws li chav dej, chav ua noj, thiab pas dej da dej. RDP txhim kho cov dej tsis kam ntawm cov nplais nplaum los ntawm kev txo lawv cov permeability. Lub nruam polymer zaj duab xis tsim los ntawm RDP ua raws li kev thaiv, tiv thaiv dej los ntawm kev nkag mus rau cov nplaum txheej thiab ncav cuag lub substrate.
Qhov kev txhim kho dej tsis zoo no pab tswj kev ncaj ncees ntawm cov nplaum nplaum rau lub sijhawm, tiv thaiv cov teeb meem xws li efflorescence, pwm loj hlob, thiab degradation ntawm substrate. Ntxiv mus, RDP-modified adhesives qhia tau hais tias ua tau zoo dua nyob rau hauv lub freeze-thaw cycles, uas yog ib qho tseem ceeb rau sab nrauv daim ntaub ntawv uas cov nplaum raug rau cov huab cua sib txawv.
Txhim khu kev ua haujlwm thiab qhib sijhawm
Kev ua haujlwm tau zoo thiab lub sijhawm qhib yog qhov tseem ceeb rau cov pobzeb installers. Kev ua haujlwm tau hais txog qhov yooj yim ntawm cov nplaum sib tov, sib kis, thiab kho thaum lub sij hawm siv, thaum lub sij hawm qhib yog lub sij hawm uas cov nplaum tseem tacky thiab ua hauj lwm tom qab kis tau rau ntawm lub substrate.
RDP txhim kho kev ua haujlwm ntawm cov nplais nplaum los ntawm kev muab ib qho smoother, creamier sib xws uas yooj yim rau trowel. Qhov no ua kom yooj yim dua thiab siv tau zoo dua, txo lub sijhawm ua haujlwm thiab siv zog. Tsis tas li ntawd, lub xub ntiag ntawm RDP txuas ntxiv lub sijhawm qhib ntawm cov nplaum, muab cov neeg tsim kho kom yooj yim dua thiab sijhawm rau cov vuas kom raug yam tsis muaj rushing. Qhov no yog tshwj xeeb tshaj yog zoo nyob rau hauv loj-scale installation nyob rau hauv qhov tseeb kev sib raug zoo thiab kev hloov ntawm cov vuas yuav tsum tau.
Txhim khu Durability
Lub sij hawm ntev durability ntawm pobzeb installation yog ib qho kev txhawj xeeb tseem ceeb hauv kev tsim kho. RDP txhim kho qhov ua tau zoo ntawm cov nplais nplaum los ntawm kev txhim kho lawv cov khoom siv kho tshuab thiab tiv thaiv ib puag ncig. Qhov yooj yim thiab adhesion zog imparted los ntawm RDP pab tswj kev ncaj ncees ntawm cov nplaum nplaum thaum lub sij hawm, txawm nyob rau hauv dynamic loads thiab kub hloov.
Tsis tas li ntawd, RDP txhim kho cov nplaum nplaum tiv thaiv cov tshuaj tua kab mob los ntawm cov tshuaj ntxuav thiab lwm yam khoom siv, kom ntseeg tau tias cov nplais saum npoo tseem nyob ruaj khov thiab ua kom zoo nkauj. Cov yeeb yaj kiab polymer kuj tseem pab tiv thaiv kev tsim ntawm microcracks, uas tuaj yeem nthuav tawm thiab ua rau tsis ua haujlwm ntawm cov nplaum nplaum.
Case Studies thiab Applications
Ntau qhov kev tshawb fawb thiab cov ntawv thov qhia txog cov txiaj ntsig zoo ntawm RDP hauv cov nplais nplaum. Piv txwv li, nyob rau hauv high-sawv vaj tse uas cov pobzeb pobzeb yog raug rau qhov tseem ceeb txav thiab kev co, RDP-hloov adhesives tau qhia superior kev ua tau zoo nyob rau hauv kev ruaj ntseg daim ntawv cog lus. Ib yam li ntawd, nyob rau hauv lub pas dej da dej qhov chaw uas dej tsis kam yog qhov tseem ceeb, RDP-txhim kho adhesives tau ua pov thawj zoo los tiv thaiv dej infiltration thiab cov teeb meem cuam tshuam.
Hauv kev kho dua tshiab uas cov vuas tau teeb tsa rau ntawm cov substrates uas twb muaj lawm, RDP-hloov cov nplaum nplaum muab kev txhim kho adhesion thiab yoog raws, haum rau me ntsis txav thiab qhov tsis zoo ntawm qhov chaw hauv qab. Qhov kev ua tau zoo no ua rau RDP muaj txiaj ntsig zoo hauv ntau qhov kev siv tiling, los ntawm thaj chaw mus rau kev lag luam thiab kev lag luam.
Redispersible Polymer Powder (RDP) ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm ntawm cov nplais nplaum. Nws lub peev xwm los txhim kho adhesion, yoog raws, dej tsis kam, ua haujlwm tau zoo, thiab ua haujlwm ntev ua rau nws yog ib qho tseem ceeb ntxiv rau hauv kev tsim kho niaj hnub no. Los ntawm kev tsim cov yeeb yaj kiab polymer txuas ntxiv hauv cov nplaum nplaum, RDP muab cov txiaj ntsig uas yog qhov tseem ceeb rau kev ua tiav ntev ntawm kev teeb tsa pobzeb. Raws li kev tsim kho kev lag luam txuas ntxiv mus, qhov tseem ceeb ntawm RDP hauv kev ua kom cov khoom zoo, ruaj khov, thiab txhim khu kev qha cov nplais nplaum nplaum zoo li yuav loj hlob, tsav tsheb tshiab thiab txhim kho cov kev coj ua hauv tsev.
Post lub sij hawm: Jun-01-2024