White. Therefore, increasing the thermal insulation performance of doors and windows and curtain walls and reducing energy consumption are important links in improving the quality of the indoor thermal environment and increasing the level of building energy conservation.

Compared with the application of ordinary doors and windows, energy-saving doors and windows have greatly reduced the heat radiated to the outdoors through the glass, achieving the effect of heat preservation and energy saving. This energy saving effect is achieved through the integrity of the entire door and window system, and the sealant material It is an indispensable part of the entire system.

The application of silicone sealant in building doors and windows and curtain walls mainly includes three aspects: secondary sealing of insulating glass, curtain wall structure, weather-resistant sealing, and waterproof and weather-resistant sealing of doors and windows. The quality of silicone sealant not only affects the safety of the entire building's doors, windows and curtain walls, but also affects whether the building meets the requirements of energy conservation and environmental protection.

Insulating glass units have outstanding thermal insulation properties and are important materials for improving the energy-saving level of doors and windows. They have been widely used in buildings in recent years. The dry gas inside the hollow glass makes it have the functions of sound insulation, heat insulation, anti-condensation, reduce cold radiation and enhance the safety of the glass. In the two seals of the hollow glass structure, the first seal is to ensure low water vapor penetration, and hot-melt butyl glue is generally used. The role of the second sealant is to ensure the integrity of the glass unit structure. Generally, silicone sealant is used. If it is used for structural assembly of insulating glass, silicone structural sealant must be selected.

The service life of the hollow glass unit depends on the function of the sealing structure, and the excellent edge sealing must have the following characteristics:

1. Long-lasting resistance to environmental factors, especially heat, water or moisture and ultraviolet rays;

2. Sufficient structural strength to withstand displacement, minimizing the change of the first sealant water vapor channel;

3. Low water vapor and gas permeability under operating conditions.

If the silicone sealant cannot meet the above requirements, the sealed insulating glass is likely to fog up during the service life and cause failure and lose the energy-saving effect.