Silicone structural sealant can withstand a certain amount of force. Silicone weather-resistant glue is mainly used for waterproof sealing. Silicone structural glue can be used to lay sub-frames and can withstand a certain amount of tension and gravity. Silicone weather-resistant glue is only used for caulking and cannot Used for structural sealing.
Silicone construction sealant is a neutral-curing, high-quality silicone weather-resistant sealant for construction. Excellent weather aging resistance, high and low temperature resistance -50°C+150C, good adhesion, it can be extruded and used under a wide range of climate conditions, and reacts quickly with moisture in the air to solidify into Durable, high-performance and elastic silicone sealant, resistant to natural erosion such as oxygen odor, ultraviolet rays and rain. Mainly used for caulking and sealing of doors, windows and building decoration.
Among the main technical indicators of silicone weather-resistant sealant, the ones that characterize the construction performance are sag, extrusion, and tack drying time. The main indicators that characterize the performance of the weather-resistant sealant after curing are displacement capacity and mass loss rate. The mass loss rate of the weather-resistant sealant is related to Thermal weight loss of structural adhesives is equivalent. The main purpose is to examine the performance changes of weather-resistant adhesives after long-term use. The higher the mass loss rate, the more serious the performance decline after long-term use.
The main function of silicone weather-resistant sealant is to seal the joints between plates. Because the plates are often affected by temperature changes, the main structure opening, etc., the width of the joints will also change. This requires that the weather-resistant adhesive has good ability to withstand joint displacement and does not crack when it withstands changes in joint width for a long time. This performance is called the displacement capacity of the weather-resistant adhesive, which is the same as the “displacement tolerance” of the structural adhesive. different
Silicone structural sealant is a one-component, neutral-curing, specially designed for bonding and assembling glass structures in building walls. It can be easily extruded and used under a wide range of temperature conditions, and relies on moisture in the air to solidify into an excellent, durable high-modulus, high-elastic silicone rubber. The product does not require primer on glass and can produce excellent adhesion.
Structural adhesives have high strength (compressive strength > 65MPa, steel-steel positive tensile bonding strength > 30MPa, shear strength > 18MPa), can withstand large loads, are resistant to aging, fatigue, and corrosion, and perform well within the expected life. Stable and suitable for bonding structural parts that can withstand strong forces. Non-structural adhesives have low strength and poor durability. They can only be used for ordinary and temporary bonding, sealing and fixing, and cannot be used for bonding structural parts.