3A Molecular Sieves Activated Powder For Gassing And Bubbling Control
3A activation powder is a kind of molecular sieve powder based on A-type crystal with potassium form of structure, it can selectively adsorb different molecular substances according to molecular size and polarity, it can adsorb all molecules with effective diameter less than 0.3nm (i.e. water molecules). The addition of quantitative activation powder in the system can effectively remove water from PU system, and it does not adsorb solvents, resins or pigments, avoiding the formation of air bubbles and extending the service life of the material, so the activation powder is an excellent dehumidifier for PU coatings, adhesives and sealants. 3A molecular sieves activated powder can be used for gassing and bubbling control in two component polyurethane adhesives.
Model | 3A Molecular Sieve Powder |
Nominal pore diameter | 3 angstroms |
CAS No. | 308080-99-1 |
Size (μm) | 2~4 |
Bulk density (g/ml) | ≥0.45 |
Static water absorption (%) | ≥23 |
Water content (%) | ≤2.0 |
Molecular sieve activation powder plays a crucial role in the manufacturing of polysulfide sealant. It is a highly effective desiccant that helps in absorbing moisture from the raw materials used in the production process.
Polysulfide sealant is commonly used in construction and is known for its excellent adhesion, chemical resistance, and durability. However, if moisture is present during its manufacturing, it can lead to a decrease in the quality of the sealant, affecting its performance.
To prevent this from happening, molecular sieve activation powder is added to the raw materials. It works by absorbing the moisture present in the materials before they are processed, ensuring that the final product is of the highest quality.
Using molecular sieve activation powder is a cost-effective solution for manufacturers as it ensures the durability and effectiveness of the polysulfide sealant, prolonging its shelf life and preventing premature failure.
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