Key to Enhancing Building Performance: Redispersible Polymer Powder (RDP)

Redispersible Polymer Powder (RDP) is a dry powder made from the spray-drying of polymer emulsions, primarily used to enhance the performance of cement-based and gypsum-based mortars. RDP particles can re-disperse and restore their original properties when mixed with water. Various types of RDP are available on the market, such as vinyl acetate-ethylene copolymer powder, catering to different construction needs.

The main components of RDP include polymer resins, internal and external additives, and protective colloids, the latter often being polyvinyl alcohol, which helps maintain the stability of the particles during storage and transportation. RDP significantly enhances the adhesion and cohesion of mortars, improving workability and flow properties, as well as increasing flexural strength and wear resistance, thereby extending the lifespan of buildings.

In wet mortars, RDP enhances workability and flow characteristics, ensuring even distribution of the mortar and preventing construction defects. With growing attention to environmental protection and sustainable development, RDP's potential as a high-performance additive will continue to expand, making it an important asset in building industry innovation.