Posted on Leave a comment

Silicone sealant curing time for the construction process

Silicone sealant curing time for the construction process:Many constructors are eager to speed up the solidification of silicone rubber production companies in pursuit of construction time or construction speed. In fact, this practice is very wrong.

The reaction of the crosslinker with the base polymer to form a network of Si-O-Si frameworks is a complex process. If the reaction time is too short, the skeletal structure may be too small, resulting in less strength and brittleness after the glue is cured; at the same time, the glue may not fully infiltrate the substrate and cause the adhesion strength to the substrate to decrease; and may also be due to curing. The small molecular gas produced during the process of rapid solidification cannot be volatilized and accumulated in a timely manner from the uncured colloids, thereby generating bubbles that make the surface of the sizing surface uneven and affect the appearance; (such situations are more common in summer outdoor construction), if blindly Fast requirements, the quality of the project will inevitably be affected. Of course, too slow curing speed can also cause problems such as contaminated stone. Therefore, it is recommended that the general surface drying time at room temperature is about 20-50min.

Leave a Reply