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Why Add Redispersible Polymer (VAE/RDP) Powder in Wall Putty?

Jun. 17, 2024

Redispersible polymer powder is made by water-based emulsion using a spray-drying process. It dissolves quickly in water, forming an emulsion. RDP powder is a key part of putty, and it plays an important role in how well the putty sticks. Increasing the amount of RDP powder results in a higher bonding strength.


What is Redispersible Polymer Powder Used For?


Redispersible Polymer powder is mainly used in all kinds of dry-mix mortar, such as wall putty powder, ceramic tile adhesive, ceramic tile jointing agent, dry powder interface agent, exterior insulation mortar, self-leveling mortar, mending mortar, decorative mortar, waterproof mortar, etc..


Redispersible Polymer Powder

The Role of Redispersible Polymer Powder (RDP) in Putty


Redispersible Polymer Powder (RDP) plays a crucial role in enhancing the properties of wall putty, making it more effective and durable. Here’s how RDP contributes to improving putty formulations:


1. Enhanced Adhesion and Mechanical Properties:


- When RDP is mixed with water, it quickly disperses into an emulsion, mimicking the characteristics of the initial liquid polymer.

- Upon drying, this emulsion forms a flexible film that adheres strongly to various substrates. This high flexibility, combined with excellent weather resistance, significantly boosts the putty’s adhesion and mechanical properties.


2. Improved Cohesive Force and Strength:


- RDP enhances the cohesive force within the putty, providing superior alkali resistance and wear resistance.

- It also increases the flexural strength, allowing the putty to better withstand bending and stretching forces.


3. Increased Water-Resistance and Penetration Resistance:


- The addition of RDP to putty formulations improves their resistance to water and penetration. This is essential for maintaining the integrity and performance of the putty in moist or wet conditions.


4. Enhanced Water Retention and Working Time:


- RDP helps improve the water retention of the putty, preventing it from drying out too quickly.

- This extended "open time" allows for easier application and finishing, making the putty more user-friendly.


5. Boosted Impact Resistance and Durability:


- By enhancing the putty's impact resistance, RDP contributes to its overall durability.

- The putty becomes more resilient to physical impacts and environmental stresses, ensuring a longer lifespan and sustained performance.


In summary, the incorporation of Redispersible Polymer Powder in putty formulations provides multiple benefits, including improved adhesion, strength, water resistance, and durability. These enhancements make RDP an invaluable component in creating high-quality, long-lasting putty products.


Why add VAE/RDP Powder to Wall Putty?


Improve constructability: VAE/RDP powder enhances the application properties of the putty, allowing it to be applied smoothly and easily to a variety of surfaces. This ease of use makes it a top choice among construction professionals.

Better crack resistance: The flexibility and elongation of VAE/RDP greatly improve the cracking resistance of the putty, ensuring the durability and beauty of the putty.

Better adhesion: VAE/RDP enhances putty adhesion to a variety of substrates, improving bonding and reducing the risk of peeling.

Stronger water resistance: The water-repellent properties provided by VAE/RDP protect the putty from moisture-related damage, thereby increasing its durability and performance over the long term.

Reduce shrinkage: Adding VAE/RDP helps minimize shrinkage during drying, ensuring a consistent and even surface.

 Redispersible Polymer Powder