Stamper is a kind of sealing product which is widely used in life and has excellent performance. It mainly plays the role of sealing, insulation, filling, etc., with strong adhesion, heat insulation, sound insulation, moisture-proof and other effects, and is widely used in buildings.

With the advent of winter, the temperature is declining, and when using foam, it may be affected to a certain extent. Since the foaming agent is cured by chemical reaction of moisture in the air, but due to the dry winter, less moisture in the air and lower temperature, the curing time and curing performance will be reduced, so it is more necessary for people to master its use skills. The following is to tell you the problems and solutions of foam glue in winter.

common problems of foaming agent in winter!

The more high-grade glue (the more black material), the more likely it is to produce "brittle" or "powdering" phenomenon.

Excessive black material temporarily did not participate in the reaction, showing the illusion, and the more high-grade glue is more likely to appear. This phenomenon is not a product quality problem. The foam will return to normal after being placed for a period of time, and ultimately will not affect the product performance. The higher the temperature, the faster the recovery, and the slower the recovery. Above 5 degrees Celsius will generally be restored within 48h. In this process, do not handle the foam, so as not to damage the overall structure of the foam.

Slow curing speed, channeling, etc.
Foam construction temperature requirements 5-35 ℃, the most suitable construction conditions are about 25 ℃ temperature, humidity of more than 30%. The decrease of catalyst activity in low temperature environment will cause the curing speed to slow down. Air drying with low humidity will also affect the curing speed, because the foaming adhesive itself is a moisture curing product, and then the phenomenon of foaming and foaming occurs inside the foam, resulting in the phenomenon of coarse foam and large channeling holes.

Glue is not smooth, more residue!
If the temperature is low, the materials in the tank will be sticky, the air pressure in the tank is very low, gluing is not easy, and there are more materials left on the inner wall of the tank.

Solution!

To improve the construction environment
Before construction, spray a small amount of water mist on the surface of the substrate to increase the humidity of the construction environment. If it is warm water, it will improve the curing speed, cell density and powdery phenomenon.

Increase the material temperature

The day before construction, the foam glue will be stored in the indoor environment above 10 ℃, or the material tank will be placed in the warm water of about 40 ℃ for about 10 minutes before construction, which will improve the low-temperature powdery, curing speed, glue residue, etc.