4a Molecular Sieve 325 Mesh Powder For Construction Adhesives
CHEMXIN Molecular Sieve Powder is a micronized form of zeolite molecular sieve, and is used for the removal of water from within polymers – most typically from within 2-component Polyurethane formulations. It is also widely used for moisture scavenging in polyurea systems and zinc-rich paints.
4A molecular sieve activation powder:
An additive used in paints, resins, and certain adhesive agents to reduce moisture. To eliminate bubbles and improve the uniformity and strength of materials; in the production of polyurethane products, impurities such as water and other products that affect the quality of the products can be absorbed without changing the physical and chemical properties of the products.
Technical Parameter:
| Model | Activated Molecular Sieve Powder |
| Color | White |
| Nominal pore diameter | 4 angstroms |
| Shape | Powder |
| Diameter (mm) | 4A |
| CAS NO. | 70955-01-0 |
| Size (μm) | 2~4 |
| Bulk density (g/ml) | ≥0.43 |
| Static water absorption (%) | ≥23 |
| PH value | 9~11 |
| Sieve Residue (%) (325 mesh) | ≤1.0 |
| Water content (%) | ≤2.0 |
| Attention |
The product as a desiccant can not be exposed in the open air and should be stored in dry condition with air-proof package. |
Used in numerous applications such as:
Construction coatings
Wood-flooring protective coatings and adhesive backings
Liquid-applied roofing
Self-leveling floor coating
Concrete re-surfacing
UV resistant coatings
Wood putty
Sports hall flooring
Industrial floors
Decorative floors
The Questions about Molecular Sieve Powder
Question 3: What factors determine the price of molecular sieves, and why is the price of 4A the lowest?
Answer: The price of 4A molecular sieve is the lowest because 3A and 5A are replaced by 4A.
FAQ
1). Will activated molecular sieve powder spit out water, such as when placed in ink?
Won't. Activated molecular sieve powder is also a kind of molecular sieve, which is a dry static molecular sieve and cannot be regenerated in the system. The adsorption and desorption of molecular sieves are conditional. Desorption requires high temperature and low pressure. When used by customers, molecular sieve activated powder forms a uniform substance with the resin and does not have desorption conditions. This is why the activated molecular sieve powder cannot be regenerated. (Resin is one of the materials used in some inks).
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