The insulating glass is a combination of a glass substrate, a spacer frame (aluminum strip), a desiccant (molecular sieve), a sealing material (butyl rubber, polysulfide rubber or structural adhesive). In the construction of insulating glass, glass and aluminum frames are generally very stable, and the life of the insulating glass depends on the life of the molecular sieve and the sealing material.


In the construction of the insulating glass system, the glass is very stable, and the glass substrate does not need to be considered in the case of normal use; the standard hollow aluminum strip is surface anodized. The physicochemical properties of the surface anodized aluminum strip are very stable under normal conditions. Even if there is no surface anodized aluminum strip, oxidation during use will only tarnish the aluminum strip, but this does not have a significant effect on the properties of the aluminum strip itself.
The value of the construction of the insulating glass system is that the insulating glass can function as heat insulation and sound insulation in the case of a closed and dry cavity. Due to changes in ambient temperature, the gas in the hollow cavity is always in an expanded or compressed state, so that the insulating glass sealing system is always under stress, and ultraviolet, water and moisture in the environment accelerate the aging of the sealing system, thereby This causes the water vapor to accelerate into the hollow cavity. When a large amount of water vapor appears in the hollow glass cavity, the insulating glass fails, and the failure of the insulating glass means that the service life of the insulating glass is terminated. To ensure that the insulating glass does not fail, the key is the desiccant and sealing material.
Regarding the life of insulating glass, the earliest Chinese glass enterprises gave the concept of 10-year warranty period with reference to American standards. In the insulating glass national standard GB/T11944-2012, the reference agreement for the life of insulating glass was first proposed, and the "insulating glass" was proposed. The life expectancy should be greater than 15 years" concept. In fact, the life of the insulating glass has a close relationship with the selection and processing technology of the insulating glass material, and is also affected by many factors such as the composition of the insulating glass plate and the use environment, and it is difficult to simply quantify. For insulating glass that has been installed on a wall, a relatively simple measure is to measure the dew point or spacer air humidity.