Redispersible Polymer Powder: Properties and Applications
Redispersible polymer powder is a water-soluble, redispersible powder primarily composed of copolymers such as ethylene-vinyl acetate (EVA), vinyl acetate-ethylene (VAE), and acrylic copolymers. It is produced through spray drying and uses polyvinyl alcohol as a protective colloid. Upon contact with water, the powder quickly redistributes into an emulsion. Due to its high bonding capability and unique properties—such as water resistance, workability, and thermal insulation—its applications are extensive.
Key Properties
Redispersible polymer powder exhibits outstanding bonding strength, enhances the flexibility of mortar, and extends open time. It significantly improves the following properties:
Alkali resistance
Adhesion and cohesion in mortar
Flexural strength
Waterproofing
Plasticity
Abrasion resistance
Workability
In flexible anti-crack mortar, it further provides excellent flexibility.
Application Areas
External Insulation Systems
Adhesive Mortar: Ensures strong bonding between the substrate and EPS board, enhancing adhesion strength.
Base Coat Mortar: Improves the mechanical strength, crack resistance, durability, and impact resistance of insulation systems.
Tile Adhesives and Grouts
Tile Adhesives: Provides high bonding strength and flexibility to accommodate the different thermal expansion coefficients of the substrate and tiles.
Grouts: Enhances water resistance, prevents moisture penetration, ensures strong adhesion to tile edges, and minimizes shrinkage while maintaining flexibility.
Tile Renovation and Wood Putty
Improves adhesion and bonding strength of putty on special substrates such as tiles, mosaics, and plywood.
Ensures putty flexibility to accommodate substrate expansion and contraction.
Interior and Exterior Wall Putty
Enhances adhesion strength and flexibility to counteract stress from substrate expansion and contraction.
Provides excellent aging resistance, water resistance, and moisture resistance.
Self-Leveling Floor Mortar
Ensures compatibility of elastic modulus, flexural strength, and crack resistance.
Enhances wear resistance, adhesion strength, and internal cohesion of mortar.
Bonding Mortar
Improves surface strength of substrates and ensures strong bonding of mortar.
Cement-Based Waterproof Mortar
Ensures waterproofing properties of the mortar layer while maintaining excellent adhesion to the substrate.
Enhances compressive and flexural strength.
Repair Mortar
Matches the thermal expansion coefficient of the substrate, reducing the elastic modulus of mortar.
Provides excellent hydrophobicity, breathability, and adhesion.
Masonry and Plaster Mortar
Enhances water retention, reducing moisture loss in porous substrates.
Improves ease of application and increases work efficiency.
