Do You Know The Reasons for Sealant Cracking And Debonding?

The first reason is the wrong interface design. 

Three-sided bonding will cause the sealant to be unevenly stressed and easy to tear. 

The second reason is improper glue selection. 

The joints that are easily deformed by external forces in daily life will easily crack if sealants with poor flexibility are used. 

The third reason is insufficient cleaning. 

The presence of contaminants in the joints before gluing will directly affect the bonding force of the colloid and cause debonding. 

How to avoid it? 

Design the interface to be bonded on both sides, so that the sealant can move with the joint after sealing, 

and then choose the appropriate sealant according to different equipment types. 

Finally, it is important to note that before gluing, 

make sure that the joints are fully cleaned and reserve appropriate maintenance time after gluing.