Outdoor applications are subjected to prolonged exposure to ultraviolet radiation, alternating high and low temperatures, and rainwater erosion. Silicone sealants, which combine weather resistance with elasticity, represent a key application feature. 

I. Curtain Wall and Skylight Roof Engineering 

1. Structural bonding ‌ For durable bonding between glass panels and metal frames, capable of withstanding wind pressure, seismic displacement, and thermal expansion and contraction stresses, ensuring the safety and stability of the curtain wall structure. 
2. ‌ Seam sealing ‌ In unitized curtain walls, the glass and aluminum alloy joints are filled to prevent rainwater penetration and air leakage, significantly enhancing airtightness and watertightness. 
3. ‌ Skylight sealing ‌ Specifically designed for sealing joints in architectural skylights, its high elastic modulus accommodates structural deformation while ensuring long-term waterproofing and sealing performance. 

Core advantages: Silicone sealant It boasts high bonding strength and can accommodate the minute displacements caused by temperature changes in curtain walls, while also being resistant to... - 40℃ Low temperature and 70℃ High temperatures—avoid cracking of the adhesive layer caused by thermal cycling. 

II. Doors and Windows Engineering 

Window and door sealing ‌ Fill the gaps between doors and windows and walls to enhance sound insulation and noise reduction, prevent dust from entering, and improve energy efficiency. 

Core advantages: Silicone sealant Tolerable - 30℃ To - 40℃ Low winter temperatures (to prevent the adhesive layer from becoming brittle and leaking) and summer 60℃ The above-mentioned product is resistant to high temperatures (preventing softening and deformation), as well as to water penetration and UV aging. Its service life is longer than that of conventional polyurethane adhesives. 3-5 Year. 

III. Roof and Roof Surface Waterproofing 

Joint sealing: Sealing of metal roof overlaps, waterproofing the joints between rooftop solar photovoltaic panels and the roof surface, and sealing the bases of roof vents.   

Core advantages: Silicone rubber’s resistance to high and low temperatures can handle day-and-night conditions. 10℃ To 60℃ It features a significant temperature difference tolerance and boasts excellent water resistance and anti-aging properties, effectively preventing rainwater from seeping into the roof through gaps. Its waterproof lifespan is longer than that of conventional acrylic sealants. 2-3 Twice. 

IV. Special Structures and Functional Scenarios 

1. ‌ Hollow glass manufacturing ‌ As a secondary sealant, it provides structural support and ensures glass stability, thereby extending the service life of insulated glass units. 
2. ‌ Seismic damping ‌ Used for joint sealing in bridges and high-rise buildings, it combines shock absorption and cushioning functions to enhance structural safety. 
3. ‌ Prefabricated construction ‌ Adapts to prefabricated component joints, meeting the demands of rapid construction and promoting the development of building industrialization. 

In general, silicone sealants have extensive applications in the construction industry. Their primary functions include joint sealing, bonding and fixing, seismic buffering, and excellent weather resistance. At the same time, selecting qualified products and using them under appropriate conditions can ensure their safety.

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