Polysulfide
Polysulfide adhesives are one type of adhesive used for sealing double-glazed windows. These adhesives have high resistance to chemicals, which is why they are commonly used as sealants in various applications. The best adhesive for final sealing in these windows is polysulfide adhesive. These adhesives have a high capability of preserving and maintaining the argon gas between the two window panes and retain their elastic and adhesive properties over time. Additionally, they exhibit suitable resistance to different weather conditions and temperatures, and they are easy to use. Polysulfide adhesives are produced and supplied in various types such as one-part, two-part, and coating adhesives, among others. They are stable against water, oils, chemical solvents, and weathering. However, they have efficacy in low temperatures up to -62 degrees Celsius but become soft and lose their effectiveness at higher temperatures ranging from 70 to 94 degrees Celsius.
technical specifications
|
Component A viscosity |
650/000~900/000 |
|
Component B viscosity |
150/000~250/000 |
|
Mixture gel time (20 c) |
25 min~10 |
|
Initial setting time of polysulfide mastic 24 hours and final setting time of polysulfide mastic |
7 days |
|
Tensile strength |
156N at 150% traction |
|
Interruption due to traction |
(Elongation @ break) more than 500% |
how to maintain
12 months in original containers and in a cool environment with temperatures ranging from +5 to +27 degrees Celsius.
In case of contact between the polysulfide mastic and the skin or eyes, immediately wash with water and soap.
Generally, it is recommended to use gloves, goggles, and a mouth mask during the application of the primer and polysulfide mastic, especially in enclosed spaces.
How to use
Prior to the application of polysulfide mastic primer, complete preparation of the seam is one of the characteristics of polysulfide mastic products.
The seam wall must be completely dry and free of dust, grease, and non-stick particles. It is also very important to completely remove the previous polysulfide mastic (if any).
Using mechanical machines for complete cleaning such as milling machines can have better results. Then, with strong suction devices or wind pressure, all internal surfaces of the seam can be cleaned and dried again.
After applying the polysulfide mastic primer, wait for about 20 minutes for the polysulfide mastic primer to evaporate and then apply the main product of the polysulfide mastic. If it takes more than 2 hours from the beginning of the polysulfide mastic application, re-apply the polysulfide mastic primer. is necessary.
Depending on the type of polysulfide mastic product, it can be applied with a special gun - trowel or cast.
To beautify the appearance of the edge of June, you can use adhesive tape, which needs to be removed before the polysulfide mastic dries. To smooth the final surface of polysulfide mastic, a closing trowel and a small amount of detergent can be used. For the cast type of polysulfide mastic, no leveling is required and the product of polysulfide mastic in the cast type is self-leveling.
