1. Taw qhia
Pobzeb nplaum, tseem hu ua pobzeb mortar lossis pobzeb kua nplaum, yog ib qho tseem ceeb hauv kev txhim kho cov vuas hauv ntau yam kev tsim kho. Nws lub luag haujlwm tseem ceeb yog kev sib txuas cov vuas kom ruaj ntseg rau cov substrates xws li phab ntsa, pem teb, lossis countertops. Txhawm rau kom ua tiav qhov kev ua tau zoo, cov ntawv nplaum nplaum feem ntau suav nrog ntau yam khoom ntxiv, ntawm cov Redispersible Polymer Powder (RDP) ua lub luag haujlwm tseem ceeb.
2.Properties of Redispersible Polymer Powder (RDP)
Redispersible Polymer Powder yog cov hmoov copolymer uas muaj kev sib xyaw ntawm cov polymers, feem ntau muab tau los ntawm vinyl acetate-ethylene (VAE) lossis acrylic esters. RDP yog tsim los ntawm cov txheej txheem tshuaj tsuag kom qhuav, uas hloov cov kua polymers rau hauv cov hmoov uas tsis muaj dej. Cov hmoov nplej uas ua rau muaj ntau yam khoom tseem ceeb uas ua rau lawv zoo tagnrho rau siv hauv cov pobzeb nplaum formulations:
Zaj duab xis tsim: RDP hais muaj peev xwm tsim tau ib cohesive thiab saj zawg zog zaj duab xis thaum dispersed nyob rau hauv dej, uas ua rau lub zog nplaum thiab durability ntawm pobzeb adhesives.
Dej Redispersibility: Txawm hais tias nyob rau hauv cov hmoov, RDP tuaj yeem nkag mus rau hauv dej los tsim cov colloidal suspensions ruaj khov, tso cai rau kev sib koom ua ke yooj yim rau hauv cov ntawv nplaum thiab ua kom cov khoom sib txawv hauv qhov sib xyaw.
Adhesion: RDP txhim kho qhov adhesion ntawm pobzeb nplaum rau ob qho tib si substrate thiab pobzeb saum npoo, txhawb kev tsim cov ntawv cog lus muaj zog thiab txo qhov kev pheej hmoo ntawm pobzeb detachment lossis ua tsis tiav.
Flexibility: Qhov yooj yim ntawm RDP-hloov cov nplaum nplaum pab ua kom haum rau me me substrate txav thiab thermal expansions, txo qhov kev pheej hmoo ntawm pobzeb tawg lossis debonding lub sijhawm.
3.Functions ntawm RDP nyob rau hauv pobzeb Adhesive formulations
RDP ua haujlwm ntau yam hauv cov ntawv nplaum nplaum nplaum, txhua qhov ua rau kev ua haujlwm tag nrho thiab ua haujlwm ntev ntawm cov nplaum nplaum:
Binder: Raws li tus thawj binder hauv pobzeb nplaum formulations, RDP plays lub luag haujlwm tseem ceeb hauv kev tuav ua ke ntau yam ntawm cov nplaum sib xyaw, suav nrog cov cement, aggregates, fillers, thiab lwm yam additives.
Kev tuav dej: RDP pab txhim kho lub peev xwm tuav dej ntawm cov nplais nplaum, tso cai rau kev ua haujlwm ntev thiab qhib lub sijhawm qhib thaum thov. Qhov no ua rau kom muaj kev ntub dej ntawm cov substrate thiab cov nplais pobzeb, ua kom muaj qhov adhesion txaus thiab txo qhov kev pheej hmoo ntawm kev ziab ntxov ntxov.
Txhim Kho Kev Ua Haujlwm Zoo: Qhov sib ntxiv ntawm RDP muab kev ua haujlwm zoo dua thiab kev sib kis tau rau cov nplais nplaum, ua rau lawv yooj yim rau kev thov thiab tswj xyuas thaum lub sijhawm teeb tsa. Qhov no txhim khu kev ua tau zoo ntawm cov txheej txheem tiling thiab pab txhawb kom smoother, ntau hom pobzeb nto.
Sag Resistance: RDP-hloov adhesives nthuav tawm kev txhim kho sag tsis kam, tiv thaiv cov vuas los ntawm kev swb los yog zawv zawg tawm ntawm txoj hauj lwm thaum lub sij hawm ntsug, xws li phab ntsa tiling. Qhov no ua kom muaj kev sib raug zoo thiab txo qhov kev xav tau kev hloov kho ntau dhau los lossis kev ntsuas kev txhawb nqa.
Txhim kho cov cuab yeej cuab yeej cuab tam: Los ntawm kev ua kom yooj yim, toughness, thiab cohesion rau cov pobzeb nplaum formulations, RDP pab txhim kho lawv cov khoom siv kho tshuab, suav nrog lub zog tensile, shear zog, thiab kev cuam tshuam. Qhov no ua rau cov pobzeb ruaj khov thiab ruaj khov dua tuaj yeem tiv taus ntau yam kev ntxhov siab ib puag ncig thiab kev ua haujlwm.
4.Kev pab cuam rau pobzeb Adhesive Performance
Kev koom ua ke ntawm RDP rau hauv cov nplais nplaum nplaum muaj ntau yam txiaj ntsig kev ua tau zoo uas txhim kho qhov zoo thiab ntev ntawm kev teeb tsa pobzeb:
Lub zog Bond Strength: RDP txhim kho cov nplaum nplaum ntawm cov vuas thiab cov substrates, uas ua rau cov ntawv cog lus muaj zog dua thiab txo qhov kev pheej hmoo ntawm cov pobzeb detachment lossis delamination, txawm nyob rau hauv cov xwm txheej nyuaj xws li cov av noo lossis kub hloov pauv.
Crack Resistance: Qhov yooj thiab elasticity imparted los ntawm RDP pab txo qhov tsim ntawm cov kab nrib pleb nyob rau hauv cov nplais nplaum txheej, yog li txo qhov kev nthuav tawm ntawm cov kab nrib pleb los ntawm substrate mus rau cov pobzeb nto. Qhov no txhim kho cov txheej txheem kev ncaj ncees thiab zoo nkauj zoo nkauj ntawm cov nplais saum npoo ntawm lub sijhawm.
Dej Resistance: RDP-hloov pobzeb adhesives qhia txog kev tiv thaiv dej, tiv thaiv kom tsis txhob ya raws thiab txo qhov tshwm sim ntawm cov pobzeb nplaum deterioration los yog pwm loj hlob hauv qhov chaw ntub dej lossis ntub dej, xws li chav dej, chav ua noj, lossis pas dej da dej.
Txhim kho Durability: Los ntawm kev txhawb nqa lub zog cohesive ntawm cov nplais nplaum nplaum, RDP pab txhawb rau tag nrho cov kav ntev thiab kev ua haujlwm ntev ntawm cov nplais ntawm cov nplais, kom ntseeg tau tias muaj kev sib txuas ntev thiab kev saib xyuas tsawg kawg ntawm lub neej ntawm kev teeb tsa.
Redispersible Polymer Powder (RDP) ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm, ua haujlwm tau zoo, thiab ua haujlwm ntev ntawm cov nplais nplaum nplaum. Los ntawm kev ua tus tuav ntaub ntawv, dej tuav tus neeg saib xyuas, thiab tus txhawb nqa adhesion, RDP txhim kho cov cuab yeej cuab tam thiab kev sib txuas cov yam ntxwv ntawm cov nplais nplaum, ua rau muaj zog dua, muaj zog dua cov pobzeb. Nws txoj kev koom tes rau kev sib raug zoo, kev sib tsoo, dej tsis kam, thiab kev ua haujlwm tag nrho ua rau RDP yog ib qho tseem ceeb ntawm cov cuab yeej siv niaj hnub no, ua rau kev tsim kho cov pobzeb zoo hauv ntau qhov chaw nyob, kev lag luam, thiab kev lag luam.
Post lub sij hawm: Apr-26-2024