Redispersible Polymer Powder (RDP) imhando yepolymer poda iyo inoshandiswa zvakanyanya mumhando dzakasiyana dzekuvaka. Iwo maRDP anogadzirwa nemaitiro anonzi spray drying. Munguva iyi, musanganiswa wemvura-soluble monomers uye zvimwe zvinowedzera inoiswa emulsified, uye ipapo mvura inobviswa kuburikidza nekupfapfaidza kuomesa. Chigadzirwa chinokonzerwa nehupfu inogona kuparadzirwa nyore nyore mumvura. RDPs ine yakanakisa kunamatira, kuchinjika, uye kuramba kwemvura, izvo zvinoita kuti ive yakanakira kushandiswa mune akawanda maapplication.

Kurongwa kweRDPs kwakavakirwa pazvinhu zvakati wandei, zvinosanganisira kuumbwa kwemakemikari, iyo polymerization maitiro, uye ekupedzisira zvivakwa zvechigadzirwa. Muchikamu chino, tichakurukura kurongeka kweRDPs zvichienderana nemakemikari avo.

1. Vinyl Acetate Ethylene (VAE) RDPs

VAE RDPs ndiyo inonyanya kushandiswa mhando yeRDPs. Iwo anogadzirwa necopolymerizing vinyl acetate (VA) uye ethylene (E) pamberi pemamwe mamonomers akadai seacrylate kana methacrylate. Iyo VA yemukati mucopolymer inosiyana pakati pe30% ne80%, zvichienderana neyakagadzirirwa application. VAE RDPs anozivikanwa neakanakisa adhesive zvivakwa, kuchinjika, uye kuramba mvura. Iwo anowanzoshandiswa mumatairi anonamira, skim majasi, uye madziro putties.

2. Acrylic RDPs

Acrylic RDPs inogadzirwa necopolymerizing acrylic esters nemamwe monomers akadai sevinyl acetate, ethylene, kana styrene. Iyo acrylic esters inoshandiswa mucopolymer inogona kunge iri methyl methacrylate (MMA), butyl acrylate (BA), kana musanganiswa wezvose. Izvo zvimiro zve acrylic RDPs zvinoenderana nechiyero chemonomers anoshandiswa mukuita copolymerization. Acrylic RDPs ine yakanakisa kupikisa kwemamiriro ekunze, uye anowanzo shandiswa mumachira ekunze, mamembrane ekudzivirira mvura, uye machira esimende.

3. Styrene Butadiene (SB) RDPs

SB RDPs inogadzirwa necopolymerizing styrene uye butadiene pamberi pemamwe mamonomers akadai seacrylate kana methacrylate. Iyo styrene yemukati mucopolymer inosiyana pakati pe20% ne50%, zvichienderana neyakagadzirirwa application. SB RDPs ine yakanaka yekunamira zvivakwa, uye inowanzoshandiswa mumatairi anonamira, dhaka, uye grouts.

4. Vinyl Acetate (VA) RDPs

VA RDPs inogadzirwa nehomopolymerizing vinyl acetate monomers. Ivo vane yakakwira vinyl acetate yemukati, kubva pa90% kusvika 100%. VA RDPs ine yakanaka yekunamira zvivakwa, uye inowanzoshandiswa mukunamira mataira, ma bonding agents, uye cementitious coatings.

5. Ethylene Vinyl Chloride (EVC) RDPs

EVC RDPs inogadzirwa necopolymerizing ethylene uye vinyl chloride pamberi pemamwe monomers akadai seacrylate kana methacrylate. Iyo vinyl chloride yemukati mucopolymer inosiyana pakati pe5% ne30%, zvichienderana neyakagadzirirwa kushandiswa. EVC RDPs ine mvura yakanaka kuramba uye yakanakisa kunamatira kune akasiyana substrates. Iwo anowanzoshandiswa mumatairi anonamira, skim majasi, uye madziro putties.

Mukupedzisa, maRDP imhando yakakosha yepolymer powder iyo inoshandiswa zvakanyanya mumhando dzakasiyana dzekuvaka. Kurongeka kweRDPs kwakavakirwa pazvinhu zvakati wandei, zvinosanganisira kuumbwa kwemakemikari, iyo polymerization maitiro, uye ekupedzisira zvivakwa zvechigadzirwa. Mushonga wemakemikari weRDPs unogona kuiswa muVinyl Acetate Ethylene (VAE) RDPs, Acrylic RDPs, Styrene Butadiene (SB) RDPs, Vinyl Acetate (VA) RDPs, uye Ethylene Vinyl Chloride (EVC) RDPs. Imwe neimwe mhando yeRDP ine yayo yakasarudzika zvimiro inoita kuti ive yakakodzera kune chaiwo maapplication.