Redispersible polymer hmoov (RDP) yog ib qho tseem ceeb polymer additive nyob rau hauv niaj hnub tsev cov ntaub ntawv thiab yog dav siv nyob rau hauv cov pobzeb adhesives los txhim kho lawv kev sib raug zoo zog, yooj thiab durability.
1. Txheej txheem cej luam ntawm Redispersible polymer hmoov
Redispersible polymer hmoovyog ib tug dawb-flowing hmoov ua los ntawm emulsion los ntawm cov tshuaj tsuag kom qhuav txheej txheem. Nws tuaj yeem hloov pauv mus rau hauv cov polymer dispersion zoo ib yam li thawj emulsion tom qab hu rau dej. Feem ntau hom latex hmoov muaj xws li ethylene-vinyl acetate copolymer (EVA), acrylates, ethylene-acrylate copolymer (VAE), thiab lwm yam. Vim nws qhov ruaj khov zoo, kev thauj mus los yooj yim thiab kev tsim kho yooj yim, nws yog dav siv hauv cov khoom siv khib nyiab qhuav, tshwj xeeb tshaj yog nyob rau hauv cov nplais nplaum. Nws ua lub luag haujlwm tseem ceeb.
2. Lub luag haujlwm ntawm Redispersible polymer hmoov hauv cov nplais nplaum
Cov nplais nplaum nplaum yog cov khoom siv qhuav qhuav siv los lo cov vuas rau saum npoo ntawm lub hauv paus, uas tuaj yeem tsim los ntawm kev ntxiv dej. Cov tsoos cement mortar muaj qhov tsis zoo ntawm qhov loj shrinkage thiab tsis tshua muaj zog sib txuas, uas ua rau nws nyuaj rau kev ua tau raws li cov kev xav tau ntawm cov tsev niaj hnub kom ruaj khov thiab siv tau rau ntau yam khoom siv hauv paus. Kev taw qhia ntawm Redispersible polymer hmoov tau txhim kho lub cev zoo thiab kev tsim kho ntawm cov nplais nplaum, feem ntau hauv cov hauv qab no:
Txhim kho kev sib raug zoo zog: Cov khoom siv polymer hauv cov hmoov latex tsim cov qauv sib txuas nrog cov ntaub ntawv tsis muaj zog (xws li cov cement), uas txhim kho cov neeg kho tshuab tom thiab cov tshuaj sib txuas ntawm cov pobzeb nplaum thiab cov pobzeb thiab cov substrate, yog li txhim kho lub zog sib txuas.
Txhim kho qhov yooj yim thiab tawg tsis kam: Cov khoom siv tau yooj yim ntawm cov polymer muab cov nplaum kom muaj peev xwm deformation ntau dua, tuaj yeem nqus cov deformations me me los ntawm kev hloov pauv kub, kev ntxhov siab, thiab lwm yam, thiab txo qhov kev pheej hmoo ntawm kev tawg. Nws yog tshwj xeeb tshaj yog haum rau cov vuas loj loj thiab hloov tau yooj yim.
Txhim kho kev tsim kho: Lub Redispersible polymer hmoov muab cov pobzeb nplaum rau lub sijhawm qhib, dej tuav tau zoo thiab lubricity, uas yooj yim rau cov neeg ua haujlwm tsim kho thiab txhim kho kev tsim kho.
Txhim kho dej tsis kam thiab khov-thaw tsis kam: Cov zaj duab xis tsim los ntawm cov polymer tom qab kho tau zoo heev dej tsis kam thiab huab cua tsis kam, yog li cov pobzeb nplaum tseem tuaj yeem ua haujlwm ruaj khov hauv qhov chaw ntub lossis huab cua hloov pauv.
3. Kev siv thiab ceev faj
Nyob rau hauv cov txheej txheem ntawm cov pobzeb adhesives, Redispersible polymer hmoov feem ntau yog tov nrog qhuav hmoov cov ntaub ntawv xws li xis mas, quartz xuab zeb, cellulose ether, thiab lwm yam nyob rau hauv proportions ua ib tug qhuav mix. Ntxiv dej huv thiab do ua ntej siv ntawm qhov chaw tsim kho. Nws qhov ntau npaum li cas yog feem ntau 2% ~ 10% ntawm tag nrho cov nyiaj ntawm cov nplaum qhuav hmoov, thiab hloov kho raws li qhov yuav tsum tau ua (xws li C1, C2, S1, S2 qib).
Cov ntsiab lus hauv qab no yuav tsum tau sau tseg thaum siv:
Tsis txhob cia nyob rau hauv qhov kub thiab txias ib puag ncig: latex hmoov yog ib qho yooj yim rau agglomerate thaum ntub, thiab yuav tsum tau muab kaw thiab khaws cia rau hauv ib qho chaw qhuav.
Kev sib xyaw ua ke nrog lwm cov khoom sib xyaw: Lwm cov tshuaj hauv cov mis yuav cuam tshuam rau kev ua haujlwm ntawm cov hmoov latex, thiab kev sib raug zoo yuav tsum tau lees paub los ntawm kev sim ua ntej.
Do kom sib npaug: Do kom huv si ua ntej kev tsim kho kom tawg tag nrho cov hmoov latex thiab xyuas kom meej tias nws cov dej num tau ua tiav.
4. Txoj Kev Loj Hlob
Raws li cov ntaub ntawv hauv tsev txuas ntxiv txhim kho mus rau ntsuab, ib puag ncig tus phooj ywg thiab kev ua haujlwm, covdaim ntawv thov ntawmRedispersible polymer hmoovhauv cov nplais nplaumtau dhau los ua ntau thiab ntau dua, tshwj xeeb tshaj yog nyob rau hauv kev txuag hluav taws xob thiab ib puag ncig tus phooj ywg lub tsev thiab cov tsev prefabricated. Tsis tas li ntawd, kev tshawb fawb thiab kev loj hlob ntawm latex hmoov kuj tseem txav mus rau kev ua haujlwm siab, xws li kev tsim qis-VOC, kev ua haujlwm siab, thiab cov khoom ziab kom qhuav kom tau raws li cov kev xav tau ntawm cov ntawv thov sib txawv.
Raws li ib qho tseem ceeb ntawm kev ua tau zoo hloov kho cov ntaub ntawv hauv cov nplais nplaum, Redispersible polymer hmoov muaj txiaj ntsig zoo hauv kev txhim kho cov khoom adhesion, yooj, thiab dej tsis kam. Kev xaiv tsim nyog thiab kev siv cov hmoov latex tuaj yeem txhim kho kev tsim kho kom zoo thiab ua haujlwm ntev ntawm cov pobzeb paving. Nrog rau kev txhim kho cov ntaub ntawv tshawb fawb thiab kev nce qib ntawm kev tsim kho thev naus laus zis, nws cov chaw siv thiab kev ua haujlwm yuav raug nthuav dav ntxiv thiab ua kom zoo dua qub.
Post lub sij hawm: May-08-2025