Home    Company News    What is the difference between weather resistant sealant and silicone structural adhesive?

What is the difference between weather resistant sealant and silicone structural adhesive?

Hits: 993 img

Silicone structural sealants can withstand a certain amount of force, and silicone weathering adhesives are mainly used for waterproof sealing. Silicone structural adhesives can be used to make sub-frames that can withstand certain tensile forces and gravity. Silicone weather-resistant adhesives are only used as caulking and cannot be used for structural sealing. Silicone Building Sealant is a neutral curing silicone sealer for high quality construction. Superior weathering resistance, high and low temperature resistance -50 ° C +150 ° C, good adhesion, it can be extruded under a wide range of climatic conditions, and quickly react with moisture in the air to cure into durable High performance and flexible silicone sealant that resists natural erosive, UV and rain. Mainly used for joint sealing of doors and windows and architectural decoration. Among the main technical indexes of silicone weathering sealant, there are sag, extrusion and dry time to characterize the construction performance. The performance of the weathering adhesive after curing is mainly the displacement capacity and mass loss rate. The quality loss rate of weathering adhesive is equivalent to the thermal weight loss of structural adhesive. The performance change of weathering adhesive after long-term use is mainly investigated. The higher the mass loss rate, the more serious the performance degradation after long-term use. The main function of silicone weather-resistant sealant is to seal the indirect seam of the plate. Since the plate is often affected by temperature changes and deformation of the main structure, the joint width will also change. This requires the weathering adhesive to have a good ability to withstand the displacement of the joint, and does not crack under long-term changes in the width of the joint. This property is called the displacement capacity of the weathering adhesive, and the "displacement bearing capacity" of the structural adhesive. different. Silicone structural sealant is a one-component, neutral cure designed specifically for the bonding of glass structures in building facades. It can be easily extruded under a wide temperature range. It relies on moisture in the air to cure into an excellent, durable, high modulus, highly elastic silicone rubber. The product does not require a primer for the glass and produces superior adhesion. Structural rubber refers to high strength (compressive strength >65MPa, steel-steel positive tensile bond strength >30MPa, shear strength >18MPa), can withstand large loads, and is resistant to aging, fatigue, corrosion and performance during life expectancy. Stable, suitable for strong structural bonding. Non-structural adhesives have low strength and poor durability, and can only be used for bonding of structural parts due to ordinary, temporary bonding, sealing and fixing.

Online QQ Service, Click here

QQ Service

Wechat Service