Redispersible emulsion latex hmoov

Redispersible emulsion latex hmoov (RDP) yog cov hmoov qhuav, yooj yim-rau-kawg uas feem ntau yog siv los ua ib qho ntxiv hauv mortars thiab plasters los txhim kho lawv cov kev ua tau zoo. Nws yog feem ntau tsim los ntawm copolymer ntawm vinyl acetate thiab ethylene, uas yog tsim los ntawm cov txheej txheem ntawm emulsion polymerization.

RDP yog ntau yam thiab ntau yam hmoov uas muab ntau yam txiaj ntsig hauv kev tsim kho. Nws txhim kho qhov adhesion, yoog raws, ua haujlwm tau zoo, thiab dej tuav ntawm mortars thiab plasters, tso cai rau lawv siv rau ntau qhov xwm txheej. RDP tseem tuaj yeem txhim kho lub zog thiab ua haujlwm ntev ntawm cov ntaub ntawv tsim kho, ua rau lawv tiv taus ntau dua rau kev tawg, shrinking, thiab lwm yam kev puas tsuaj.

Ntxiv nrog rau kev siv hauv kev tsim kho, RDP kuj tseem siv rau lwm yam lag luam, xws li txheej, nplaum, thiab textiles. Hauv cov txheej txheem, RDP yog siv los ua cov ntawv khi thiab cov yeeb yaj kiab tsim, txhim kho qhov adhesion thiab durability ntawm cov xim thiab txheej. Hauv cov nplaum nplaum, RDP txhim kho lub zog thiab adhesion ntawm cov nplaum, ua rau nws tsim nyog siv ntau yam kev siv. Hauv textiles, RDP yog siv los ua tus neeg sawv cev sizing, txhim kho lub zog thiab ruaj khov ntawm cov ntaub.

Ib qho txiaj ntsig tseem ceeb ntawm RDP yog nws lub peev xwm los hloov pauv tau yooj yim hauv dej tom qab ziab. Qhov no txhais tau hais tias nws tuaj yeem khaws cia ua cov hmoov qhuav thiab tom qab ntawd yooj yim tov nrog dej thaum xav tau, ua rau nws yooj yim thiab siv tau zoo. Lub redispersibility ntawm RDP yog nyob ntawm ntau yam, nrog rau cov particle loj, polymer muaj pes tsawg leeg, thiab degree ntawm crosslinking.

RDP feem ntau yog ntxiv rau mortars thiab plasters nyob rau hauv ntau ntawm 0.5% mus rau 10% los ntawm qhov hnyav, nyob ntawm seb cov ntawv thov tshwj xeeb thiab cov khoom xav tau. Nws feem ntau yog tov nrog lwm cov khoom xyaw qhuav, xws li cov cement, xuab zeb, thiab cov fillers, ua ntej ua ke nrog dej. Qhov sib xyaw ua ke tuaj yeem siv rau ntau qhov chaw, suav nrog pob zeb, masonry, thiab ntoo.

RDP yog cov khoom muaj kev nyab xeeb thiab ib puag ncig-phooj ywg uas tau raug sim ntau rau nws txoj kev nyab xeeb thiab ua tau zoo. Nws tsis muaj tej yam uas muaj kev phom sij thiab tsis ua rau muaj kev noj qab haus huv lossis ib puag ncig txaus ntshai. RDP tau pom zoo siv los ntawm ntau lub koom haum tswj hwm, suav nrog US Environmental Protection Agency (EPA) thiab European Chemicals Agency (ECHA).

Hauv kev xaus, redispersible emulsion latex hmoov yog ntau yam thiab ntau yam hmoov uas muab ntau yam txiaj ntsig hauv kev tsim kho thiab lwm yam lag luam. Nws lub peev xwm los txhim kho adhesion, yoog raws, kev ua haujlwm, thiab kev tuav dej ua rau nws muaj txiaj ntsig zoo ntxiv hauv mortars, plasters, coatings, adhesives, thiab textiles. Nws yooj yim ntawm kev siv, kev nyab xeeb, thiab ib puag ncig-phooj ywg ua rau nws nyiam xaiv rau ntau daim ntawv thov.