Adhesive and sealant systems
Application Background
Adhesives and sealants represent the largest application area for molecular sieve activated powder, accounting for nearly 40% of global market demand. In systems such as silicone sealants, polysulfide sealants and epoxy adhesives, trace moisture triggers the following problems:
·During storage, moisture reacts with active components, causing viscosity drift and gelation failure
·Gas released during curing forms bubbles in the adhesive layer and reduces bond strength
·Moisture inside metal packaging causes corrosion, shortening product shelf life
Core Value of Molecular Sieve Activated Powder
|
Function |
Description |
|
Storage Stabilizer |
Continuously adsorbs free moisture in the system, preventing gelation or degradation during storage |
|
Defoamer |
Physically adsorbs water and blocks side reactions between moisture and the curing agent, eliminating bubbles at the source |
|
Viscosity Modifier |
Modified activated powder improves the rheology of the adhesive without affecting the base viscosity of the system |
|
Pot-Life Extender |
Extends working time in two-component systems, improving application experience |
Typical Application Scenarios
|
Application Scenario |
Core Effect |
|
Silicone Sealant |
Prevents gelation during storage, extends shelf life |
|
Polysulfide Sealant |
Eliminates curing bubbles, improves sealing performance |
|
Epoxy Adhesive |
Improves storage stability and curing performance |
|
Hot-Melt Adhesive |
Controls moisture content in the molten state |
|
Structural Adhesive (Automotive / Construction) |
Increases bond strength, eliminates interface bubbles |
|
AB Adhesive (Two-Part General-Purpose) |
Extends pot life with significant defoaming effect |
Industry Trends
Driven by building energy efficiency and the lightweighting of new-energy vehicles, demand for structural adhesives is growing rapidly, and the adhesive sector's need for high-performance molecular sieve activated powder continues to climb. In particular, modified activated powder (such as Jiuzhou JZ-PU) achieves superior dispersibility and compatibility through surface modification and has become a key functional material in high-end adhesive formulations.
