Redispersible Polymer Powder for Dry Mix Products
Redispersible polymer powder (RDP), also known as redispersible latex powder (RLP), is a dry, free-flowing powder that can be re-dispersed in water to form a stable emulsion . It’s one of the most important binders in dry-mix mortar, which are pre-blended mixtures of cement, sand, and other dry ingredients that only need water to be added for use.
- Production: RDP is made by spray-drying a polymer emulsion, which is a suspension of polymer particles in water. This process transforms the liquid emulsion into a fine, free-flowing powder.
- In Dry Mix Products: When RDP is added to a dry-mix product and mixed with water, the powder particles absorb water and redisperse back into their original emulsion state.
- Benefits: As the water evaporates, the dispersed polymer particles come together to form a continuous film that binds the other ingredients in the dry mix together. This film provides several benefits to the final product, including improved:
- Strength and bonding force
- Elastic bending and rupture strength
- Freeze-thaw resistance
- Weathering resistance
- Durability and wear resistance
- Water retention
- Workability
