Redispersible Polymer Powder (RDP) wani nau'in foda ne na copolymer wanda ake amfani dashi a cikin aikace-aikacen gini daban-daban. Ana yin RDPs ta hanyar da ake kira bushewar feshi. A yayin wannan tsari, ana fitar da cakuda monomers mai narkewa da ruwa da sauran abubuwan da ake buƙata, sannan ana cire ruwan ta hanyar bushewa. Samfurin da aka samu shine foda wanda za'a iya sake tarwatsawa cikin ruwa cikin sauƙi. RDPs suna da kyakkyawar mannewa, sassauci, da juriya na ruwa, wanda ya sa su dace don amfani a yawancin aikace-aikace.

Rarraba RDPs ya dogara ne akan abubuwa da yawa, gami da haɗin sinadarai, tsarin polymerization, da kaddarorin ƙarshe na samfurin. A cikin wannan labarin, za mu tattauna rabe-rabe na RDPs bisa ga sinadaran sinadaran.

1. Vinyl Acetate Ethylene (VAE) RDPs

VAE RDPs sune nau'in RDP da aka fi amfani dasu. Ana yin su ta hanyar copolymerizing vinyl acetate (VA) da ethylene (E) a gaban sauran monomers kamar acrylate ko methacrylate. Abubuwan VA a cikin copolymer sun bambanta tsakanin 30% zuwa 80%, ya danganta da aikace-aikacen da aka yi niyya. VAE RDPs an san su don kyawawan kaddarorin mannewa, sassauci, da juriya na ruwa. Ana amfani da su da yawa a cikin tile adhesives, skin sut, da kuma bangon bango.

2. Acrylic RDPs

Acrylic RDPs ana yin su ta hanyar copolymerizing acrylic esters tare da wasu monomers kamar vinyl acetate, ethylene, ko styrene. Acrylic esters da aka yi amfani da su a cikin copolymer na iya zama ko dai methyl methacrylate (MMA), butyl acrylate (BA), ko haɗin duka biyun. Kaddarorin RDPs na acrylic sun dogara da rabon monomers da aka yi amfani da su a cikin tsarin copolymerization. RDPs na Acrylic suna da kyakkyawan juriya na yanayi, kuma ana amfani da su a cikin kayan ado na waje, masu hana ruwa, da siminti.

3. Styrene Butadiene (SB) RDPs

Ana yin SB RDPs ta hanyar copolymerizing styrene da butadiene a gaban sauran monomers kamar acrylate ko methacrylate. Abubuwan da ke cikin sitirene a cikin copolymer ya bambanta tsakanin 20% zuwa 50%, ya danganta da aikace-aikacen da aka yi niyya. SB RDPs suna da kyawawan kaddarorin mannewa, kuma ana amfani da su a cikin tile adhesives, turmi, da grouts.

4. Vinyl Acetate (VA) RDPs

Ana yin VA RDPs ta hanyar homopolymerizing vinyl acetate monomers. Suna da babban abun ciki na vinyl acetate, kama daga 90% zuwa 100%. VA RDPs suna da kyawawan kaddarorin mannewa, kuma ana amfani da su a cikin tile adhesives, abubuwan haɗin gwiwa, da suturar siminti.

5. Ethylene Vinyl Chloride (EVC) RDPs

Ana yin EVC RDPs ta hanyar copolymerizing ethylene da vinyl chloride a gaban sauran monomers kamar acrylate ko methacrylate. Abun ciki na vinyl chloride a cikin copolymer ya bambanta tsakanin 5% zuwa 30%, ya danganta da aikace-aikacen da aka yi niyya. EVC RDPs suna da kyakkyawan juriya na ruwa da kyakkyawar mannewa zuwa wasu sassa daban-daban. Ana amfani da su da yawa a cikin tile adhesives, skin sut, da kuma bangon bango.

A ƙarshe, RDPs wani nau'i ne mai mahimmanci na copolymer foda wanda aka yi amfani da shi sosai a cikin aikace-aikacen gine-gine daban-daban. Rarraba RDPs ya dogara ne akan abubuwa da yawa, gami da haɗin sinadarai, tsarin polymerization, da kaddarorin ƙarshe na samfurin. Abubuwan sinadaran na RDPs za a iya rarraba su cikin Vinyl Acetate Ethylene (VAE) RDPs, Acrylic RDPs, Styrene Butadiene (SB) RDPs, Vinyl Acetate (VA) RDPs, da Ethylene Vinyl Chloride (EVC) RDPs. Kowane nau'in RDP yana da kaddarorin sa na musamman waɗanda suka sa ya dace da takamaiman aikace-aikace.