Gun foam 840
Spray polyurethane foam (SPF) is the most common type of insulation foam. It was developed in 1940 and was initially used by the United States military for aircraft applications. In the early 1970s, it became widely used as a foam insulation material. One of the applications of polyurethane foam is insulation of objects. This category of chemicals is composed of two main substances: polyol and isocyanate, both of which are liquid in nature. Upon mixing, these two substances react and expand into foam, which eventually solidifies after a period of time. This rapid drying process creates a relatively permanent insulation that neither cracks nor changes its shape. If the foam expands beyond the desired area, the excess foam can be trimmed to the desired size.
technical specifications
|
Density |
23 g/ml |
|
Temperature resistance |
-40 c &100 c |
|
Free sticking time |
10 mins |
|
Tensile strength |
9 N/CM2 (DIN 53571) |
|
Shear strength |
5 N/CM2 (DIN 53427) |
|
Elongation at break |
20-25% |
|
Compressive strength |
4 N/CM2 (DIN 53427) |
|
Foam expansion |
100% & 200% |
|
Water suction |
MAX 1% |
|
Fire properties |
B 3 |
|
Heat conductivity |
0.021 w/MK (DIN 52612) |
|
Curing time |
20 C1 CM/hour (high humidity) 20 C0.5 CM/hour (low humidity) |
|
Gross weight |
850 gr |
product usage
- Sound insulation of engines, vehicles, and partition walls
- Sealing between wooden panels
- Filling seams, cavities, cracks, and fractures around water and electricity systems
- Thermal insulation of sewer pipes, water pipes, and central thermal installations
- Sealing between wooden doors and windows, PVC and
- Insulation of wall panels, prefabricated walls, and ceiling panels
how to maintain
Be sure to wear a mask, goggles, clothing, and safety gloves when using. The vapors of this foam should not be inhaled. In case of contact with the eyes, rinse immediately with plenty of water and seek medical advice immediately.
Keep away from direct sunlight and at a temperature below 50 ° C. Do not pierce or burn foam cans after use. Keep out of reach of children.
How to use
- First, before using adhesives and sealants, we must clean the desired surface from grease and dust so that the sealing operation and connection of the foam and the surface are accompanied by higher quality, and as a result, the sealing strength and durability.
- In the second step, we prepare the polyurethane sealant spray foam and shake the spray foam for 1 minute or 20 times to mix the contents and increase its quality and efficiency. This step is more important.
- In the next step, spray some water to the desired surface with a sprinkler, because this will increase the surface moisture and polyurethane sealant foam spray and increase the quality and efficiency of polyurethane sealant foam spray.
- The speed and method of spraying should not be associated with high speed, ie it is better to use sealing foam spray at a slow and uniform speed so that the polyurethane and the gas inside it are combined and removed in the correct and accurate ratio.
- Then allow the foam to dry. Using a cutter, cut the extra parts to achieve the desired level according to taste. Dried foam spray can be sanded or painted.
