In the field of architecture, the pursuit of efficient thermal insulation performance is the key to improve the level of building comfort and energy saving. As a common energy-saving material in modern buildings, the optimization of insulating glass performance cannot be separated from a special gas -- argon. Argon, chemical symbol Ar, is an inert gas rich in the earth's atmosphere, accounting for about 0.934% of the total volume of the atmosphere. Its unique performance makes it play an irreplaceable role in insulating glass.

From the perspective of physical properties, the thermal conductivity of argon is very low, only 0.0172W/ (m · K), far lower than the thermal conductivity of air. This property makes argon an excellent insulation medium. When argon is filled between the two layers of the insulating glass, it acts as a strong thermal barrier, greatly slowing the rate at which heat is transmitted through the glass. Whether it is to prevent outdoor heat from entering the room in hot summer, or to prevent indoor heat from losing to the outside in cold winter, argon can effectively play a role in thermal insulation, creating a more stable indoor temperature environment for the building.

Argon is an inert gas with extremely stable chemical properties. That means it rarely reacts with glass or other common substances. During the use of the insulating glass, this stability ensures that argon will not deteriorate or produce other adverse effects due to long-term contact with the glass or the external environment, thus ensuring the long-term stability and reliability of the insulating glass performance. Compared with other gases that may be active, the inertness of argon avoids problems such as glass performance degradation or gas leakage caused by the reaction between gas and glass, and extends the service life of insulating glass.

In addition, argon is denser than air, about 1.784g/L. In the insulating glass, the heavier argon will sink and accumulate at the bottom, forming a relatively stable gas layer and further enhancing the insulation effect. This density allows argon to maintain a better distribution inside the insulating glass, reducing gas convection, thus reducing heat transfer through convection.

However, to fully exploit the advantages of argon in insulating glass, the concentration of argon is a key factor. The research shows that, in general, the higher the argon concentration, the better the insulation performance of the insulating glass. When the argon concentration reaches a certain level, it can significantly improve the thermal insulation performance of glass and effectively reduce the energy consumption of buildings. However, if the argon concentration is insufficient, it will not be able to give full play to its thermal insulation advantages, and the thermal insulation capacity of the insulating glass will be greatly reduced. At the same time, the concentration retention rate of argon is also crucial. Over time, if the sealing performance of the insulating glass is not good, argon will gradually leak, resulting in a decrease in concentration, and then the insulation performance will decline. Therefore, it is necessary to ensure the good sealing of the insulating glass and maintain the concentration retention rate of argon to ensure its long-term efficient insulation.

At present, the application of aerated insulating glass in China is still in its infancy. Although the importance of argon in improving the performance of insulating glass has been recognized, there are still deficiencies in the specification and detection of argon charging concentration, concentration retention rate and related performance indicators due to the lack of unified product standards and perfect detection methods. This limits the popularization and application of inflatable insulating glass to a certain extent. And foreign countries have developed such as the American standard ASTME2269-2005 and European standard EN1279-3-2002 and other standards, through gas chromatography and other accurate detection of argon related indicators, for the quality control and performance improvement of aerated insulating glass to provide a strong guarantee.

In conclusion, argon shows great advantages in the application of insulating glass due to its unique physical and chemical properties. By increasing the concentration of argon, ensuring the concentration retention rate and establishing perfect testing standards and methods, the performance of aerated insulating glass can be further improved, and its wide application in the field of building energy conservation can be promoted, making greater contributions to the realization of green building and energy conservation and emission reduction goals.