CSJ Classroom: Guide You To Understand The Characteristics of Silicone Structural Sealant for Curtain Wall

The glass building curtain wall organically integrates the functions of windproof, rainproof, daylighting, insulation, thermal insulation, cold insulation, noise prevention, and air infiltration prevention of the building's peripheral The glass building curtain wall organically integrates the functions of windproof, rainproof, daylighting, insulation, thermal insulation, cold insulation, noise prevention, and air infiltration prevention of the building's peripheral structure with its decorative functions. It is a comprehensive combination of architectural technology, architectural function, and architectural art, which has been widely applied worldwide. 

The development of glass building curtain walls cannot be separated from the development of silicone structural sealants! Today, the editor will take you to intuitively understand the characteristics of silicone structural sealant for curtain wall engineering. 

01 Tensile and High Strength 

 Silicone structural sealant must have high tensile and shear strength, as well as resistance to repeated tensile, compressive, and peel bonding strength. It should also have high elasticity and be able to maintain the basic shape of its adhesive layer under high positive and negative stresses, preventing the glass from breaking due to excessive deformation. 

02 Weather resistance and durability 

 Silicone structural sealant must not only resist the invasion of wind and rain, but also adapt to the thermal expansion and contraction between curtain wall glass panels caused by climate temperature differences, so that the joint width can still be firmly bonded. 

03 Irreplaceability 

 Silicone structural sealant is generally used for insulating glass in framed aluminum alloy glass curtain walls. The function of silicone structural adhesive for insulating glass cannot be replaced by polysulfide adhesive. Otherwise, under negative wind pressure, there is a risk of the outer glass falling. Therefore, ordinary adhesive should never be used to replace silicone structural sealant. 

Silicone structural sealant is widely used for structural bonding and sealing of glass curtain walls due to its high and low temperature resistance, weather aging resistance, ozone resistance, good adhesion to various substrates, and strong displacement resistance. Therefore, the performance of silicone structural sealant plays a crucial role in the safety of curtain walls.