Redispersible Polymer Powder (RDP) yog ib hom copolymer hmoov uas tau siv dav hauv ntau daim ntawv thov kev tsim kho.RDPs yog tsim los ntawm cov txheej txheem hu ua tsuag ziab.Thaum lub sij hawm tus txheej txheem no, ib tug sib tov ntawm dej-soluble monomers thiab lwm yam additives yog emulsified, thiab ces cov dej raug tshem tawm los ntawm cov tshuaj tsuag kom qhuav.Cov khoom uas tshwm sim yog cov hmoov uas tau yooj yim redispersed hauv dej.RDPs muaj adhesion zoo, yoog raws, thiab dej tsis kam, uas ua rau lawv zoo tagnrho rau kev siv ntau yam.

Kev faib tawm ntawm RDPs yog nyob ntawm ntau yam, suav nrog cov tshuaj muaj pes tsawg leeg, txheej txheem polymerization, thiab cov khoom kawg ntawm cov khoom.Hauv tsab xov xwm no, peb yuav tham txog kev faib tawm ntawm RDPs raws li lawv cov tshuaj muaj pes tsawg leeg.

1. Vinyl Acetate Ethylene (VAE) RDPs

VAE RDPs yog hom RDPs siv dav tshaj plaws.Lawv yog tsim los ntawm copolymerizing vinyl acetate (VA) thiab ethylene (E) nyob rau hauv lub xub ntiag ntawm lwm yam monomers xws li acrylate los yog methacrylate.Cov ntsiab lus VA hauv copolymer sib txawv ntawm 30% thiab 80%, nyob ntawm seb daim ntawv thov npaj.VAE RDPs paub txog lawv cov khoom nplaum zoo, yoog raws, thiab dej tsis kam.Lawv feem ntau siv rau hauv pobzeb nplaum, skim coats, thiab phab ntsa putties.

2. Acrylic RDPs

Acrylic RDPs yog tsim los ntawm copolymerizing acrylic esters nrog lwm cov monomers xws li yas acetate, ethylene, los yog styrene.Cov acrylic esters siv nyob rau hauv copolymer tuaj yeem yog methyl methacrylate (MMA), butyl acrylate (BA), los yog ob qho tib si ua ke.Cov khoom ntawm acrylic RDPs nyob ntawm qhov sib piv ntawm cov monomers siv nyob rau hauv cov txheej txheem copolymerization.Acrylic RDPs muaj cov huab cua tiv thaiv zoo heev, thiab lawv feem ntau siv rau hauv cov txheej txheem sab nrauv, cov dej tsis zoo, thiab cov cementitious txheej.

3. Styrene Butadiene (SB) RDPs

SB RDPs yog tsim los ntawm copolymerizing styrene thiab butadiene nyob rau hauv lub xub ntiag ntawm lwm yam monomers xws li acrylate los yog methacrylate.Cov ntsiab lus styrene nyob rau hauv lub copolymer sib txawv ntawm 20% thiab 50%, nyob ntawm seb lub hom phiaj ntawm daim ntawv thov.SB RDPs muaj cov khoom nplaum zoo heev, thiab lawv feem ntau siv rau hauv cov nplais nplaum, tshuaj khib, thiab grouts.

4. Vinyl Acetate (VA) RDPs

VA RDPs yog tsim los ntawm homopolymerizing vinyl acetate monomers.Lawv muaj cov ntsiab lus vinyl acetate siab, xws li 90% mus rau 100%.VA RDPs muaj cov khoom nplaum zoo, thiab lawv feem ntau siv rau hauv cov nplais nplaum, cov khoom sib txuas, thiab cov cementitious coatings.

5. Ethylene Vinyl Chloride (EVC) RDPs

EVC RDPs yog tsim los ntawm copolymerizing ethylene thiab vinyl chloride nyob rau hauv lub xub ntiag ntawm lwm yam monomers xws li acrylate los yog methacrylate.Cov ntsiab lus vinyl chloride nyob rau hauv copolymer sib txawv ntawm 5% thiab 30%, nyob ntawm seb daim ntawv thov.EVC RDPs muaj dej tsis kam thiab zoo heev adhesion rau ntau yam substrates.Lawv feem ntau siv rau hauv pobzeb nplaum, skim coats, thiab phab ntsa putties.

Hauv kev xaus, RDPs yog hom tseem ceeb ntawm cov hmoov copolymer uas tau siv dav hauv ntau daim ntawv thov kev tsim kho.Kev faib tawm ntawm RDPs yog nyob ntawm ntau yam, nrog rau cov tshuaj muaj pes tsawg leeg, txheej txheem polymerization, thiab cov khoom kawg ntawm cov khoom.Cov tshuaj muaj pes tsawg leeg ntawm RDPs tuaj yeem faib ua Vinyl Acetate Ethylene (VAE) RDPs, Acrylic RDPs, Styrene Butadiene (SB) RDPs, Vinyl Acetate (VA) RDPs, thiab Ethylene Vinyl Chloride (EVC) RDPs.Txhua hom RDP muaj nws cov khoom tshwj xeeb uas ua rau nws haum rau cov ntawv thov tshwj xeeb.