The Ultimate Guide To Feature of Silicone Sealant

Silicone Sealants have been widely used in construction fields such as curtain walls, doors and windows, insulating glass and interior decoration, to play the role of bonding and sealing. During the application process, we will come into contact with concepts such as structural adhesives, hollow adhesives, weather-resistant adhesives, and fire-resistant adhesives. According to the application, the sealant can be roughly divided into the following five categories: silicone structural sealant, silicone weather-resistant sealant, ordinary silicone sealant, secondary silicone sealant for insulating glass, and special-purpose silicone sealant.

1. Structural silicone sealant

Uses: Mainly used for structural bonding of glass and aluminum sub-frames, and also used for secondary sealing of hollow glass in hidden frame curtain walls.

Features: It can bear wind load and gravity load, has high requirements for strength and aging resistance, and has certain requirements for elasticity.

2. Weather-resistant silicone sealant

Uses: Seam sealing function, to ensure air tightness, water tightness and other performances.

Features: It needs to withstand large changes in the width of the joint, has high requirements for elasticity (displacement capacity), aging resistance, and low strength requirements, and can be high or low modulus.

3. Ordinary silicone sealant

Uses: door and window joints, external wall caulking and other positions sealing.

Features: It can withstand the change of joint width, has certain displacement capacity requirements, and has low strength requirements.

4. Secondary silicone sealant for insulating glass

Uses: Secondary sealing of the insulating glass to ensure the stability of the insulating glass structure.

Features: high modulus, not too soft, some have structural requirements.

5. Special purpose silicone sealant

Uses: Used for joint sealing with special requirements, such as fire prevention, mildew prevention, etc.

Features: It needs to have some special properties (such as mildew resistance, fire prevention, etc.).

Different uses of silicone sealants have their own different performance characteristics. In general, they cannot be used in place of each other at will. For example, using weather-resistant sealant instead of structural sealant, using door and window sealant instead of weather-resistant sealant, etc., using the wrong glue may lead to serious quality accidents and safety accidents in the project. Therefore, according to the characteristics of different uses, the sealant should be selected correctly.