The thermal conductivity factors affecting energy-saving doors and windows are sealant and insulation strips. While actively researching the thermal insulation of door, window, and curtain wall structures, it is necessary to recognize that the development of high-tech new materials is an important foundation for building energy conservation. Only materials with excellent performance can ensure the long-term insulation performance of the external enclosure project. Therefore, ultra-high performance building sealing and insulation energy-saving materials have become an inevitable choice for the development of the industry.

At present, the construction regulatory authorities attach great importance to and encourage high-level insulation treatment of the exterior envelope structure of doors, windows, curtain walls, and buildings. Especially after the implementation of the energy-saving design standard GB50189 for public buildings, the energy-saving of doors and windows has been raised to a mandatory standard. At present, aluminum windows adopt methods such as using insulated glass, low reflective glass, and promoting insulation profiles to significantly reduce the heat transfer coefficient of the entire window and improve its energy-saving level. In winter, window frames with insulation strips can reduce one-third of the heat lost through the window frame; In summer, window frames with insulation strips can more effectively reduce the input of external heat.

Building sealing materials are important functional materials in the construction industry, especially in the curtain wall doors and windows industry. Silicone structural adhesive, represented by building sealing materials, has been widely used in the curtain wall doors and windows industry in the past decade. By 2008, the existing curtain wall area in China had reached over 200 million square meters, and billions of square meters of doors and windows were sealed with silicone adhesive. The sealing effect directly affects the thermal insulation performance of doors and windows. However, the large amount of silicone adhesive has not received the attention it deserves for a long time, and the market for sealants is mixed with good and bad. Many curtain wall projects leak water shortly after completion, which not only damages the interior decoration of the building, but also endangers the safety of the curtain wall metal structure, let alone energy conservation. Silicone weather resistant adhesive was originally a good insulation material, but it has become the main culprit of energy consumption due to ventilation and water leakage.

In recent years, with the vigorous development of curtain wall technology, higher requirements have been put forward for the performance of structural adhesives and weather resistant adhesives used in curtain walls. Some areas in Sichuan are located in the 9-degree earthquake zone and were once listed as restricted zones for curtain walls. Can curtain walls be built in areas with high seismic intensity? In the end, our own experts successfully developed ultra-high performance structural and weather resistant adhesives, which not only have ultra-high strength but also excellent displacement resistance. After careful theoretical calculations and practical engineering applications, ultra-high performance adhesives are fully capable, making it possible to construct curtain walls in areas with high seismic intensity. Structural adhesive can ensure the safety of curtain walls, while ultra-high performance weather resistant adhesive ensures sealing and energy saving under conditions of large deformation and displacement.

Saipan Island in the United States is renowned for its brutal World War II battlefield and beautiful scenery, but the more than 10 hurricanes that occur each year pose a severe challenge to the local curtain wall construction. The largest curtain wall project on the island is a five-star hotel located only 200 meters from the coastline. The enormous wind pressure causes the curtain wall structure to fail and leak water every year. Hurricanes squeeze rainwater into cracks, and for many years, domestically produced sealants in the United States have been unable to solve the problem. But when this hotel was renovated, we used our country's ultra-high performance sealant, which completely solved this problem once it was adopted. It has been proven that China's silicone structural adhesive technology has reached the world level.