The construction sequence of structural sealant

The construction sequence of structural sealant (structural sealant for curtain wall, two-layer structural sealant for hollow, etc.):
1) Clean the substrate

The temperature is high in summer, and the cleaning solvent is easy to volatilize. Attention should be paid to the impact on the cleaning effect.

2) Apply primer

The temperature and humidity are high in summer, and the primer is easy to hydrolyze and lose its activity in the air. Attention should be paid to injecting glue as soon as possible after applying the primer. At the same time, it should be noted that when taking the primer, the number and time of contact between the primer and the air should be reduced as much as possible. It is best to use a small turnover bottle for packaging.

3) Glue injection

After injecting the glue, weather-resistant sealant cannot be applied immediately on the outside, otherwise, the curing speed of the structural sealant will be seriously reduced.

4) Trimming

After the injection of glue, trimming should be carried out immediately, which is conducive to the contact between the sealant and the side of the interface.

5) Recording and marking

After the above process is completed, record and mark in time.

6) Maintenance

The unit must be cured for a sufficient time under static and unstressed conditions to ensure that the structural sealant has sufficient adhesion.