1. What are the raw materials and production process of molecular sieve activated powder?
The main raw material of molecular sieve activated powder is aluminosilicate. 3A is potassium sodium aluminosilicate, 4A is sodium aluminosilicate, and 5A is sodium calcium aluminosilicate. The main production method is to make molecular sieve activated powder after the raw powder is activated at high temperature.
2. What is the main function of molecular sieve activated powder (what is the difference from defoaming agent)?
Molecular sieve activated powder absorbs excess water in the system, while defoamer is defoaming and does not absorb water.
The principle of defoaming agent is to break the balance of foam stability, thereby causing the cells to burst. Molecular sieve activated powder absorbs water and is used to break the balance between the water phase and the oil phase to defoam.
3. Why does the larger the hole channel, the more expensive it is, and why is the price of 4A the lowest?
4A price is the lowest because 3A and 5A are replaced by 4A.
4. What is the difference between molecular sieve activated powder and original powder?
The difference is that the original powder is the raw material of molecular sieve activated powder. The original powder is inactive and cannot absorb water.
5. Which glues are suitable for molecular sieve activated powder?
Any trace amount of moisture in the glue that will affect the properties of the product can be used.
6. What is the approximate temperature that molecular sieve activated powder can withstand in glue?
There is no problem below 500 degrees. When the original molecular sieve powder is roasted at 550 degrees, it will lose crystal water. When the temperature drops to room temperature, it will slowly absorb the water and recover. When the baking temperature is 900 degrees, the crystal structure is destroyed and cannot be restored, so it does not have water absorption. Therefore, the activated powder can withstand temperatures below 500 degrees.
7. What is the recommended amount of molecular sieve activated powder?
The amount of molecular sieve activated powder added is determined based on the trace moisture that needs to be removed from the system. Static water adsorption at 24 means that under ideal conditions, the amount of moisture that molecular sieve activated powder can absorb is 24% of its own weight.
8. Will molecular sieve activated powder affect the viscosity of glue?
Molecular sieve activated powder does not have the effect of increasing the viscosity, and its impact on the viscosity of the system is only the impact of the addition of other inorganic materials.
9. Can molecular sieve activated powder be added to polyols?
The A component of two-component polyurethane is generally polyester polyol and polyether polyol, and molecular sieve activated powder is generally added to the A component.
10. Will molecular sieve activated powder spit out water, such as when placed in ink?
No. Activated powder is also a kind of molecular sieve, which is a 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 powder cannot be regenerated. (Resin is one of the materials used in some inks).