I-Redispersible Polymer Powder (RDP) iwuhlobo lwe-copolymer powder olusetshenziswa kabanzi ezinhlelweni ezahlukene zokwakha. Ama-RDP enziwa inqubo ebizwa ngokuthi ukomiswa ngesifutho. Phakathi nale nqubo, ingxube yama-monomers ancibilikayo emanzini nezinye izithasiselo zifakwa emulsified, bese amanzi esuswa ngokumiswa kwesifutho. Umkhiqizo ovelayo uyimpushana engasakazwa kalula emanzini. Ama-RDP anokunamathela okuhle kakhulu, ukuguquguquka, nokumelana namanzi, okuwenza alungele ukusetshenziswa ezinhlelweni eziningi.

Ukuhlukaniswa kwama-RDP kusekelwe ezintweni ezimbalwa, okuhlanganisa ukwakheka kwamakhemikhali, inqubo ye-polymerization, kanye nezakhiwo zokugcina zomkhiqizo. Kulesi sihloko, sizoxoxa ngokuhlukaniswa kwama-RDP ngokusekelwe ekwakhekeni kwawo kwamakhemikhali.

1. IVinyl Acetate Ethylene (VAE) RDPs

Ama-RDP ama-VAE awuhlobo olusetshenziswa kakhulu lwama-RDP. Zenziwe nge-copolymerizing vinyl acetate (VA) ne-ethylene (E) phambi kwamanye ama-monomers afana ne-acrylate noma i-methacrylate. Okuqukethwe kwe-VA ku-copolymer kuyahlukahluka phakathi kuka-30% no-80%, kuye ngohlelo oluhlosiwe. Ama-VAE RDP aziwa ngezakhiwo zawo ezinhle zokunamathela, ukuguquguquka, nokumelana namanzi. Zivame ukusetshenziswa kuma-adhesives we-tile, amajazi e-skim, nama-putty odongeni.

2. I-Acrylic RDPs

Ama-Acrylic RDPs enziwa nge-copolymerizing acrylic esters namanye ama-monomers afana ne-vinyl acetate, i-ethylene, noma i-styrene. Ama-ester e-acrylic asetshenziswa ku-copolymer angaba i-methyl methacrylate (MMA), i-butyl acrylate (BA), noma inhlanganisela yakho kokubili. Izakhiwo zama-acrylic RDPs zincike esilinganisweni sama-monomers asetshenziswa kunqubo ye-copolymerization. Ama-Acrylic RDPs anesimo sezulu esihle kakhulu esimelana nesimo sezulu, futhi avame ukusetshenziswa ekwakhiweni kwangaphandle, ulwelwesi olungangenwa amanzi, nasezimbotsheni zikasimende.

3. I-Styrene Butadiene (SB) RDPs

Ama-SB RDP enziwa nge-copolymerizing styrene ne-butadiene phambi kwamanye ama-monomer afana ne-acrylate noma i-methacrylate. Okuqukethwe kwe-styrene ku-copolymer kuyahlukahluka phakathi kuka-20% no-50%, kuye ngohlelo oluhlosiwe. Ama-SB RDP anezinto ezinhle kakhulu zokunamathisela, futhi avame ukusetshenziswa kumathayela, udaka, nama-grouts.

4. I-Vinyl Acetate (VA) RDPs

Ama-VA RDP enziwa ngama-homopolymerizing vinyl acetate monomers. Zinokuqukethwe okuphezulu kwe-vinyl acetate, kusukela ku-90% kuya ku-100%. Ama-VA RDP anezinto ezinhle zokunamathisela, futhi avame ukusetshenziswa ezintweni ezinamathelayo zamathayili, ama-bonding agents, nama-coatings kasimende.

5. I-Ethylene Vinyl Chloride (EVC) RDPs

Ama-EVC RDP enziwa nge-copolymerizing ethylene ne-vinyl chloride phambi kwamanye ama-monomers afana ne-acrylate noma i-methacrylate. Okuqukethwe kwe-vinyl chloride ku-copolymer kuyahlukahluka phakathi kuka-5% no-30%, kuye ngohlelo oluhlosiwe. Ama-EVC RDP anokumelana kahle namanzi nokunamathela okuhle kakhulu kuma-substrates ahlukahlukene. Zivame ukusetshenziswa kuma-adhesives we-tile, amajazi e-skim, nama-putty odongeni.

Ekuphetheni, ama-RDP awuhlobo olubalulekile lwe-copolymer powder olusetshenziswa kabanzi ezinhlelweni ezahlukene zokwakha. Ukuhlukaniswa kwama-RDP kusekelwe ezintweni ezimbalwa, okuhlanganisa ukwakheka kwamakhemikhali, inqubo ye-polymerization, kanye nezakhiwo zokugcina zomkhiqizo. Ukwakheka kwamakhemikhali kwama-RDP kungahlukaniswa ku-Vinyl Acetate Ethylene (VAE) RDPs, Acrylic RDPs, Styrene Butadiene (SB) RDPs, Vinyl Acetate (VA) RDPs, kanye ne-Ethylene Vinyl Chloride (EVC) RDPs. Uhlobo ngalunye lwe-RDP lunezinto zalo ezihlukile ezilwenza lufanelekele izinhlelo ezithile zokusebenza.