What are the uses of RDP chemicals?

Redispersible polymer powder (RDP) is a polymer-modified material produced by spray drying. It re-emulsifies in water to form a stable emulsion, significantly improving the material's adhesion, flexibility, and durability. As a key functional additive, it is widely used in the construction and engineering materials fields.

Main Applications: Construction Mortar Modification

RDP is used in dry-mix mortar to significantly improve the mortar's bond strength, crack resistance, and workability. It is suitable for plastering, masonry, and repair mortars.

Tile Adhesives

Adding RDP to tile adhesives strengthens the bond between low-water-absorption tiles and smooth substrates, improves anti-slip properties, and enhances water and freeze-thaw resistance.

Gypsum-Based Products

It is used in products such as gypsum putty and lightweight gypsum to effectively improve adhesion, flexibility, impact resistance, and leveling during application.

Waterproof Mortar

RDP forms a dense polymer film, enhancing the waterproofing layer's impermeability, alkali resistance, and adhesion. It is commonly used in humid areas such as basements and bathrooms.

Self-Leveling Materials

In self-leveling floor systems, RDP optimizes flow, bond strength, and abrasion resistance, reduces shrinkage cracking, and improves the smoothness and durability of the final finish.

Exterior Insulation Systems (EIFS)

It is used in insulation board bonding mortars and plastering mortars to enhance the overall system's bond strength, crack resistance, and weather resistance, ensuring the long-term stability of the insulation layer.

Other Applications

RDP includes interface agents, repair mortars, caulks, and sealants, improving adhesion between new and existing substrates, repairing cracks, and providing waterproofing and flexibility in joints.

Summary

RDP, with its excellent redispersibility and film-forming properties, plays a key role in modern building materials, significantly improving the workability and service durability of various systems. It is an indispensable functional polymer additive in the formulation of high-performance building materials.