Redispersible latex Powder (RDP) yog ib yam khoom uas hloov cov polymer emulsion rau hauv cov hmoov dawb ntws los ntawm kev siv tshuab ziab khaub ncaws. Thaum cov hmoov tov nrog dej, nws reconstitutes lub latex thiab muaj zog zoo ib yam li cov thawj emulsion. Vim yog qhov tshwj xeeb no, redispersible latex hmoov tau dav siv hauv cov khoom siv, cov nplaum, coatings thiab lwm yam.
1. Qhov zoo ntawm redispersible latex hmoov
Txhim kho cov khoom ua tau zoo Redispersible latex hmoov tuaj yeem txhim kho lub zog tensile, flexural zog thiab kev sib txuas lub zog ntawm cov khoom siv cement. Qhov no yog vim tias cov hmoov latex tuaj yeem tsim cov yeeb yaj kiab polymer txuas ntxiv thaum lub sijhawm ua haujlwm cement hydration, txhim kho qhov ntom thiab tawv ntawm cov khoom, yog li txhim kho kev ua haujlwm tag nrho. Piv txwv li, hauv cov pobzeb nplaum, ntxiv cov hmoov latex tuaj yeem txhim kho nws lub zog sib txuas thiab tiv thaiv cov vuas los ntawm kev poob.
Txhim khu kev ua kom tawg thiab impermeability Hauv cov khoom siv hauv tsev, kev ua haujlwm tawg thiab impermeability yog qhov tseem ceeb ntawm kev ua tau zoo. Redispersible latex hmoov tuaj yeem ua rau lub qhov hws capillary hauv cov khoom siv los ntawm kev tsim cov yeeb yaj kiab polymer, txo cov dej nkag thiab txhim kho impermeability. Nyob rau tib lub sijhawm, elasticity ntawm polymer zaj duab xis kuj tuaj yeem ua rau qeeb lossis tiv thaiv kev txhim kho ntawm microcracks, yog li txhim kho kev tawg. Yog li ntawd, latex hmoov yog dav siv nyob rau hauv sab nrauv phab ntsa rwb thaiv tsev thiab cov ntaub ntawv hauv pem teb.
Kev txhim kho kev tsim kho: Txij li cov hmoov redispersible latex hmoov muaj qhov zoo redispersibility thiab adhesion, nws tuaj yeem txhim kho lubricity thiab kev ua haujlwm ntawm cov ntaub ntawv tsim kho thaum lub sij hawm tsim kho, ua rau cov khoom siv yooj yim dua thiab siv tau. Tsis tas li ntawd, cov hmoov latex tuaj yeem txuas ntxiv lub sijhawm qhib ntawm cov khoom siv (uas yog, lub sijhawm cov khoom siv tseem siv tau thaum siv), txhim kho kev tsim kho, thiab txo cov khoom pov tseg.
Txhim kho durability Lub polymer zaj duab xis tsim los ntawm redispersible latex hmoov muaj zoo aging kuj thiab huab cua kuj. Nws tuaj yeem tiv thaiv kev cuam tshuam ntawm ultraviolet rays, kua qaub thiab alkali corrosion thiab lwm yam ib puag ncig, yog li ncua kev pab cuam lub neej ntawm cov khoom. Piv txwv li, ntxiv cov hmoov latex rau cov xim phab ntsa sab nrauv tuaj yeem tiv taus huab cua thiab nag yaig, thiab tswj kev zoo nkauj thiab kev ua haujlwm ntawm lub tsev nto.
Kev tiv thaiv ib puag ncig thiab kev ruaj ntseg Redispersible latex hmoov feem ntau yog tsim los ntawm cov khoom siv txuas ntxiv dua tshiab thiab tsis tso cov khoom tsis zoo thaum siv, uas yog nyob rau hauv txoj kab nrog kev txhim kho tam sim no ntawm cov khoom siv ntsuab. Tsis tas li ntawd, nws cov kev ua tau zoo heev tso cai rau lub thickness thiab tus nqi ntawm cov khoom siv hauv tsev kom txo tau, yog li txo cov peev txheej siv thiab kev thauj khoom ib puag ncig.
2. Kev sib tw ntawm redispersible latex hmoov
Tus nqi tsim khoom yog siab. Cov txheej txheem ntau lawm ntawm redispersible latex hmoov yog qhov nyuaj thiab yuav tsum muaj ntau yam txheej txheem xws li emulsion polymerization thiab tshuaj tsuag kom qhuav. Tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem tshuaj tsuag kom qhuav, ib tug loj npaum li cas ntawm lub zog yog noj, yog li nws cov nqi ntau lawm yog siab. Qhov no tau ua rau muaj kev txwv tsis pub siv cov hmoov latex redispersible hauv qee qhov kev tsim kho tus nqi qis.
rhiab heev rau ib puag ncig tej yam kev mob Redispersible latex hmoov yog rhiab heev rau tej yam kev mob xws li kub thiab av noo. Thaum lub sij hawm cia thiab kev thauj mus los, yog tias cov av noo siab dhau los yog qhov kub thiab txias tsis tsim nyog, cov hmoov latex tuaj yeem agglomerate los yog ua tsis tiav, uas yuav cuam tshuam rau nws cov kev ua tau zoo dua qub thiab qhov kawg ntawm daim ntawv thov. Yog li ntawd, nws muaj kev xav tau siab ntawm kev cia khoom thiab yuav tsum tau khaws cia rau hauv qhov chaw qhuav thiab txias.
Cov kev txwv ntawm cov nyhuv dispersion Txawm hais tias redispersible latex hmoov tuaj yeem redispersed hauv dej, nws cov nyhuv dispersion tseem lags qab ntawm qhov qub emulsion. Yog tias cov dej tsis zoo (xws li dej tawv lossis muaj ntau yam impurities), nws tuaj yeem cuam tshuam rau kev tawg ntawm cov hmoov latex thiab tiv thaiv nws qhov kev ua tau zoo los ntawm kev ua tiav. Yog li ntawd, hauv kev siv tiag tiag, nws yuav tsum tau siv cov khoom siv tshwj xeeb lossis kho cov dej kom zoo kom ntseeg tau tias cov txiaj ntsig zoo tshaj plaws.
Kev paub txog kev ua lag luam thiab daim ntawv thov kev tshaj tawm Raws li cov khoom siv tshiab, cov hmoov av rov ua dua tshiab muaj kev paub tsawg hauv qee lub tebchaws los yog kev lag luam, thiab nws cov kev txhawb nqa thiab daim ntawv thov raug rau qee yam kev txwv. Txawm hais tias nws qhov kev ua tau zoo tshaj plaws, qee lub tuam txhab kev tsim kho ib txwm muaj kev lees paub tsawg vim nws cov nqi tsim khoom siab thiab tus nqi. Lub sijhawm thiab kev lag luam kev kawm tseem xav tau los hloov qhov xwm txheej no.
Kev sib tw los ntawm Lwm Cov Khoom Siv Nrog kev txhim kho cov ntaub ntawv tshawb fawb, cov ntaub ntawv tshiab hloov tshiab tau tshwm sim tas li ntawm kev ua lag luam. Cov ntaub ntawv tshiab no yuav qhia tau tias muaj kev ua tau zoo lossis tus nqi qis dua li cov hmoov latex redispersible hauv qee yam, ua rau muaj kev sib tw rau kev lag luam ntawm cov hmoov latex. Txhawm rau kom muaj kev sib tw, cov tuam txhab tsim khoom yuav tsum ua kom zoo dua cov khoom lag luam thiab tswj cov nqi.
Raws li cov khoom siv polymer ua haujlwm tau zoo, cov hmoov latex redispersible tau qhia qhov zoo ntawm cov khoom siv hauv tsev, tshwj xeeb tshaj yog nyob rau hauv kev txhim kho cov khoom siv, kev txhim kho kev tsim kho thiab txhim kho cov kav ntev. Txawm li cas los xij, nws cov nqi tsim khoom siab, rhiab heev rau ib puag ncig thiab cov teeb meem kev lag luam tsis tuaj yeem tsis quav ntsej. Nyob rau hauv lub neej yav tom ntej, nrog rau kev loj hlob ntawm technology thiab kev loj hlob ntawm kev ua lag luam, redispersible latex hmoov yuav tsum tau siv nyob rau hauv ntau lub teb, thiab nws cov nqi thiab kev ua tau zoo kuj yuav optimized ntxiv, yog li ua lub luag hauj lwm ntau dua nyob rau hauv lub teb ntawm cov ntaub ntawv tsim. .
Post lub sij hawm: Sep-03-2024