Raws li ib qho tseem ceeb ntawm cov cuab yeej niaj hnub no, cov hmoov liab polymer (RDP) ua lub luag haujlwm tseem ceeb, tso cov khoom lag luam, cov khoom siv hluav taws xob thile. Zaj duab xis-tsim muaj peev xwm ntawm RDP yog tus yam tseem ceeb cuam tshuam rau qhov zoo ntawm cov khoom kawg. Qhov recispersibility ntawm hmoov tom qab cia, thauj thiab kev sib xyaw yog qhov tseem ceeb. Qhov no yog vim li cas cov ncauj lus qhia meej thiab nruj nruj ntawm cov txheej txheem yog qhov tseem ceeb kom ua kom muaj kev haum thiab cov txiaj ntsig ntawm RDP cov khoom.
Ib qho ntawm cov kev sim tseem ceeb tshaj plaws ntawm RDP zaj duab xis-kev muaj peev xwm yog cov hmoov redispersible emulsion hmoov zaj duab xis ntawm cov yeeb yaj kiab. Txoj kev ntsuas ntsuas no tau siv dav hauv cov khoom ntsuas kev ntsuas thiab R & D & RDP cov khoom lag luam. Zaj duab xis-tsim cov txuj ci ntawm hmoov redispersible polymer hmoov yog qhov ntsuas yooj yim thiab yooj yim, ntsuas tau yooj yim ntawm cov khoom lag luam RDP.
Ua ntej, qhov rov tshwm sim ntawm cov hmoov yuav tsum tau ntsuas ua ntej ua ntej daim duab ua yeeb yam. Sib tov cov hmoov nrog dej thiab nplawm rau redisperse lub polymer hais kom cov hmoov kom muaj nuj nqis txaus rau kev sim.
Tom ntej no, cov hmoov redispersible polymer hmoov zaj duab xis tsim qauv kev sim tshuaj yuav tau pib. Qhov ntsuas kub thiab txheeb ze cov av noo yuav tsum muaj ib puag ncig ruaj khov rau cov yeeb yaj kiab kom raug. Cov khoom siv tau txau mus rau hauv substrate ntawm ib qho tuab ua ntej. Cov khoom siv substrate yuav nyob ntawm daim ntawv thov yuav tsum tau ua. Piv txwv li, daim ntawv thov tshuaj khib yuav xav tau ib qho qhob ua vaj tse substrate. Tom qab tshuaj tsuag, cov khoom siv kom qhuav rau lub sijhawm teem sijhawm, tom qab uas zaj duab xis-tsim muaj peev xwm raug ntsuas.
Cov hmoov redispersible emulsion hmoov zaj duab xis tsim qauv ntsuas ntsuas ntau yam. Cov no suav nrog qhov chaw ua tiav, cov nplaum thiab yooj ntawm cov yeeb yaj kiab. Cov saum npoo ua tiav tuaj yeem ntsuas qhov muag tsis raug lossis siv lub tshuab tsom. Adhesion ntawm zaj duab xis rau lub substrate tau txiav txim siab siv daim kab xev xeem. Tsim nyog adhesion yog qhia thaum sawb ntawm daim kab xev yog siv rau cov khoom thiab zaj duab xis tseem adnered rau lub substrate tom qab daim kab xev yog muab tshem tawm. Zaj duab xis yooj kuj tseem tuaj yeem raug ntsuas siv siv daim kab xev xeem. Ncab zaj duab xis ua ntej tshem tawm cov kab xev, yog tias nws tseem yog adhered mus rau substrate, nws qhia tau qhov kom tsim nyog.
Nws yog qhov tseem ceeb kom ua raws cov txheej txheem kev soj ntsuam kom zoo ib yam nkaus. Ntau sab pem hauv ntej ntawm zaj duab xis tsim kev xeem yuav tsum ua qauv rau kev hloov pauv ntawm cov khoom sib txawv ntawm cov sib txawv. Cov no suav nrog cov txheej txheem npaj, ntsuas kub, av noo, daim ntawv thov tuab thiab kho lub sijhawm. Kev kuaj kab xev kab xev kuj yuav tsum tau ua nrog tib lub siab kom tau txais cov txiaj ntsig sib piv. Ib qho ntxiv, cov khoom siv sim yuav tsum yog ntsuas kom ua ntej kuaj. Qhov no ua kom pom tseeb thiab kho cov kev ntsuas.
Thaum kawg, txhais tau qhov tseeb ntawm cov hmoov refispersible emulsion hmoov zaj duab xis yog qhov tseem ceeb. Cov txiaj ntsig tau los ntawm zaj duab xis tsim kev xeem yuav tsum muab piv nrog cov qauv tsim rau cov ntawv thov tshwj xeeb. Yog tias zaj duab xis sib ntsib cov cai thiab cov kev qhia tshwj xeeb, nws qhov zoo yog suav tias yog. Yog tias tsis yog, cov khoom yuav xav tau kev kho dua tshiab lossis hloov kho kom zoo dua los txhim kho nws cov yeeb yaj kiab ua yeeb yam. Cov qhab xeem kuj tseem yuav pab tau daws teeb meem thiab txheeb xyuas cov teeb meem ntau lawm lossis cov khoom lag luam tsis xws luag.
Hauv cov ntsiab lus, cov hmoov dispersible polymer hmoov zaj duab xis ua yeeb yaj kiab qhov kev ua haujlwm tseem ceeb hauv kev txiav txim siab ntawm cov khoom siv tawg ua cov khoom lag luam. Raws li ib qho ntawm cov khoom tseem ceeb ntawm cov cuab yeej niaj hnub no, kev tsim muaj peev xwm ntawm RDP yog qhov tseem ceeb rau nws cov kev ua tau zoo. Kom ntseeg tau tias RDP zaj duab xis tsim muaj peev xwm ua tau muaj peev xwm ua tau cov khoom xav tau yog qhov tseem ceeb rau kev ua haujlwm zoo thiab lub neej ntawm cov khoom kawg. Kev ua raws kev ua kom raug rau kev sim cov txheej txheem yog qhov tseem ceeb kom tau txais cov txiaj ntsig zoo ib yam. Kev txhais kom zoo ntawm kev sim cov txiaj ntsig tseem tuaj yeem muab cov kev pom zoo rau hauv cov qauv thiab ntau lawm ntawm cov khoom lag luam zoo RDP.
Lub Sijhawm Post: Jul-03-2023