Insulating glass provides excellent heat insulation, as well as sound insulation and weight reduction for buildings. It has a long history of use. Double-layer glass can now be used for both sound insulation and heat insulation purposes. Is it true that pinholes should be evacuated? If we want to find an answer to this question, we must first discuss the composition of insulating glass and then determine whether or not insulating glass truly vacuumizes.

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Allow me to explain the composition of insulating glass in greater detail:

Insulating glass is made up of several components, including glass, aluminum spacers, corner bolts, butyl rubber, and desiccant.

Insulating glass is made up of two, three, or even four layers of flat glass stacked on top of one another. Using a high strength and high air tightness composite adhesive, the flat glass of each layer is bonded and sealed with the sealing strip and the glass strip around it.

It is necessary to flush dry gas into the middle of the frame as well as desiccant into the frame to ensure a good early degree between glass sheets.

It is the function principle of insulating glass that there will be no condensation inside the insulating glass when the temperature drops, and the dew point on the outer surface of the insulating glass will also rise. This is because there is a desiccant inside the insulating glass that can adsorb water molecules to ensure that the gas is dry, and because there is a desiccant inside the insulating glass that can adsorb water molecules to ensure that the gas is dry.

Furthermore, because the thermal conductivity of dry air is approximately one twenty-seventh that of glass, its thermal insulation performance is nearly 27 times greater than that of ordinary glass, and its sound insulation effect is many times greater than that of ordinary glass as well.

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Let's see if the insulating glass is truly vacuumized by performing the following analysis:

As a result of the above analysis, we can conclude that the insulating glass is not truly vacuumized, but rather is filled with a dry gas mixture.

At the moment, the inert gases argon and krypton are the most commonly used to fill dry gases used in insulating glass applications. As shown by the research results, after filling insulating glass with inert gas, the limit value of heat transfer coefficient can be reduced by 5% when compared to the same period of vacuum gas, which is superior to the vacuum effect.

Finally, let us discuss the precautions that should be taken when using insulating glass:

The first thing to keep in mind is that there should be no bubbles in the sealant at all. If there are bubbles in the material, this will allow moisture to enter the air and cause the material to lose its thermal insulation properties.

In addition, it must be tightly sealed, otherwise moisture may diffuse into the air layer through the polymer, resulting in a similar outcome to that described above, namely, no heat preservation effect; and

The third point is to make certain that the desiccant has adequate adsorption capacity. If the desiccant's adsorption capacity is insufficient, it will quickly reach saturation, the air will no longer be dry, and the thermal insulation effect will gradually diminish.