Redispersible Polymer Powder-RDP, is a water soluble polymer made from ethylene-vinyl acetate (EVA) polymer through spray drying, it's designed for the construction industry to enhance the properties of dry mortar blends. It is always combined with cellulose ethers and other additives to improve the properties and performance for the cement based or gypsum based mortar, such as better water-retention,open time,better work-ability, increasing adhesion to a variety of substrate and higher flexural strength and flexibility.

──Improve the bending strength and flexural strength of mortar

Kundu Chemical - The polymer film formed from Redispersible Polymer powder has good flexibility. Films form in the gaps and surfaces of cement mortar particles to form flexible connections. This makes the brittle and hard cement mortar elastic. Mortars added with Redispersible Polymer powder have tensile and bending resistance several times higher than ordinary mortars.

──Improve the bonding strength and cohesion of mortar

After Redispersible Polymer powder as an organic binder is formed into a film, it can form high tensile strength and bonding strength on different substrates. It plays an important role in the adhesion between mortar and organic materials (EPS, extruded foam board) and smooth surface substrates. The film-forming polymer powder is distributed throughout the entire mortar system as a reinforcing material to increase the cohesion of mortar.

──Improve the impact resistance, durability and wear resistance of mortar

The polymer powder particles fill the cavities of mortar, increasing the density of mortar and improving its wear resistance. It will relax under the action of external force without being destroyed. The polymer film can be permanently present in the mortar system.

──Improve the weather resistance and freeze-thaw resistance of mortar and prevent mortar from cracking

Redispersible Polymer powder is a thermoplastic resin with good flexibility, which enables the mortar to respond to changes in the external hot and cold environment, effectively preventing the mortar from cracking due to changes in temperature differences.

──Improve the hydrophobicity of mortar and reduce water absorption

Redispersible Polymer powder forms a film in the mortar cavity and surface. The polymer film will not disperse twice when exposed to water, preventing the intrusion of water and improving the impermeability. Special Redispersible Polymer powder with hydrophobic effect, better hydrophobic effect.

──Improve the ease of mortar construction

The polymer powder particles have a lubricating effect, allowing the mortar components to flow independently. At the same time, the polymer powder has an induction effect on the air, giving the mortar compressibility and improving the ease of construction of mortar.