Redispersible Polymer Powder (RDP) for Dry Mortars - China Suppliers & Factory
What Is Redispersible Polymer Powder Used For?
Redispersible Polymer Powder (RDP) is a free-flowing organic polymer thermoplastic powder produced by the spray-drying of an aqueous vinyl acetate-ethylene (VAE) copolymer emulsion. When mixed with water, these powders disperse back into liquid emulsions with properties essentially identical to the original copolymer. It is widely used in dry-mix mortars to improve key performance properties.
Tile Adhesives
Significantly enhances adhesion strength, sag resistance, and open time, ensuring secure bonding of tiles on various substrates.
Wall Putty & Skim Coat
Improves workability, water retention, and crack resistance, resulting in a smooth, durable, and easily sandable surface.
Self-Leveling Compounds
Enhances flowability, leveling speed, abrasion resistance, and flexural strength, creating perfectly flat underlayments.
Frequently Asked Questions
Q: What is the primary function of RDP in construction?
RDP acts as a binder that improves adhesion, flexibility, cohesion, and workability of dry-mix mortar products, enhancing their overall durability.
Q: How does RDP improve tile adhesive performance?
It provides high bond strength, flexibility to absorb thermal and structural movements, and excellent open time, preventing tiles from falling or cracking.
Q: Is RDP environmentally friendly?
Yes, most high-quality RDPs are non-toxic, low-VOC, and safe for use in both interior and exterior building applications.
Q: Does RDP improve water resistance?
Yes, specific hydrophobic grades of RDP significantly reduce water absorption in mortars, making them ideal for exterior renders and joint fillers.
Q: What is the shelf life of Redispersible Polymer Powder?
When stored in a cool, dry place in its original unopened packaging, RDP typically has a shelf life of 6 to 12 months.