Zeolite Molecular Sieve Powder

Moisture scavengers are integral components in the formulation of polyurea, polyurethane, and polyaspartic systems, serving several key functions:

In 2K Polyurethane Systems:

Prevent CO2 Formation: Moisture scavengers remove water that can react with isocyanates, preventing the production of carbon dioxide gas, which would otherwise create foam or bubbles in the final product. This ensures a high-quality finish in coatings, adhesives, and sealants

Enhance Product Stability: By absorbing moisture, these scavengers prevent side-reactions during storage.This is vital for maintaining the shelf-life and performance of polyurethane products

Reduce Surface Defects: They help in minimizing issues like foaming in the applied film, thus improving the aesthetic and functional properties of the coating

In Polyurea Systems:

Moisture Control: Similar to polyurethanes, moisture scavengers in polyurea systems absorb excess moisture to prevent unwanted reactions with isocyanates, ensuring a smooth, bubble-free application. They are particularly important in environments where moisture control is challenging.

Improve Adhesion: By reducing moisture content, they help in achieving better adhesion to substrates, which is critical for applications like protective coatings where durability is key.

In Polyaspartic Systems:

Moisture Management: Moisture scavengers in polyaspartic coatings help manage moisture during the application process. This is crucial as polyaspartics can be sensitive to moisture, especially in high-humidity conditions, which can affect the curing process and final properties.

Extend Working Time: In conditions of elevated humidity, moisture scavengers can extend the working time of polyaspartic coatings, allowing for better flow and levelling properties. This leads to a more uniform and aesthetically pleasing finish.

Prevent Bubbling: By eliminating residual moisture, these scavengers help prevent bubbling and down-glossing in the final coating, which could occur due to high moisture levels from either the substrate or the atmosphere.

General Benefits Across Systems:

Maintain Chemical Stability: Moisture scavengers ensure that the chemical composition of the systems remains stable, preventing reactions that could compromise the performance of the final product

Ensure Product Quality: They contribute to the production of high-quality coatings, adhesives, and sealants with fewer defects, enhancing both the appearance and functionality of the end product.

Versatility in Application: By controlling moisture, these additives allow for broader application conditions, making these systems more versatile for use in varying environmental conditions.

In summary, moisture scavengers are critical for maintaining the integrity, performance, and appearance of polyurethane, polyurea, and polyaspartic systems by controlling moisture levels throughout the manufacturing, storage, and application processes.

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Desiccant powders are substances used to absorb moisture from the air or from other materials. They are commonly employed in various industries to maintain dryness and prevent moisture-related issues.

SUPERSIV Desiccant Powder, particularly the 3A SUPERSIV Powder is primarily used for moisture control in various industrial applications especially within polymer systems. Here are its main uses:

1. A Moisture Scavenger… in Polymers:

• Polyurethane (PU) Systems: Our SUPERSIV range removes water from polyurethane adhesives, coatings, and sealants to prevent the formation of CO2 gas bubbles, which can adversely affect the surface finish and structural strength of the final product. This is crucial for creating bubble-free PU elastomers and resins.


• Polyurea Systems: Similarly, SUPERSIV helps with moisture scavenging in polyurea formulations, ensuring that the reaction between components proceeds without unwanted moisture interference.

2. A Moisture Scavenger… in Zinc-Rich Paints: SUPERSIV is utilized to absorb any surplus water that might contaminate the paint formulation, thereby preventing issues related to moisture in the curing process.

3. A Moisture Scavenger… in Electrical Potting Compounds: SUPERSIV Powder is used to absorb moisture in potting compounds, which are used to encapsulate electronic components to protect them from moisture damage. This helps in creating a bubble-free environment, enhancing the reliability of electronic devices.

4. A Moisture Scavenger…in Solvent-Based Adhesives: SUPERSIV Powder ensures that moisture does not react with the components of solvent-based PU adhesives, which could otherwise lead to the formation of bubbles or other quality issues.

The powder’s effectiveness in these applications stems from its ability to act as a “molecular sieve,” selectively absorbing water molecules while leaving other components of the polymer system intact. This characteristic makes it invaluable for manufacturers looking to achieve high-quality polymer products with minimal defects due to moisture.

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