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[China Glass Network] Insulating glass must meet two basic requirements: energy saving and durability and sealing life. If an insulating glass has a poor energy-saving effect, even if the durability and sealing life are long, it is a low-grade insulating glass. Conversely, if the insulating performance of the insulating glass is good, but the durability and sealing life are short, it is not what people are pursuing. Obviously, the ideal insulating glass should have both good energy saving effect and long sealing durability. Both are two aspects of a problem, and they are indispensable.
The main factors affecting the energy-saving performance of insulating glass are: glass, spacers (frames) and gases. Whether there is white glass or low-emissivity glass in the glass, whether there are cold edges (aluminum spacers) or warm edges in the spacers, air in the gas or inert gas such as argon. Under other conditions, the energy-saving effect of insulating glass with white glass, air and cold edge is poor, while the energy saving effect of low-emissivity glass, argon filled with warm air and warm glass is higher. of.
The main factors affecting the durability and sealing life of insulating glass are: insulating glass sealant, sealing structure, spacer strip, desiccant (molecular sieve) and manual operation quality. It has been demonstrated that the insulating glass using the double-pass seal, the continuous spacer strip and the 3A molecular sieve has a longer sealing life, while the insulating glass using the single-pass seal, the four-sided gusset aluminum spacer and the 4A molecular sieve has a shorter sealing life. The 20-year tracking of the actual use of insulating glass by the North American Insulating Glass Association confirms this. In addition, the results of the accelerated aging test of insulating glass (P1 test) show that the expected sealing life of the insulating glass with different spacer strip sealing structures is huge, and the short is only 2 months and the long is more than 100 years.
Under the same conditions, the use of different spacers directly affects the energy-saving performance and durable sealing of the insulating glass. However, for a long period of time, aluminum spacers (mainly four-sided gussets) are commonly used to make insulating glass. Although the sealing life is long, the thermal conductivity is high, resulting in poor energy saving performance, and direct condensation occurs at the edge of the insulating glass. . In the late 1970s, the composite strip (real-dimensional high-adhesive strip) had low thermal conductivity, and the energy saving was improved compared with the use of aluminum spacers to make insulating glass, but unfortunately it also reduced the sealing life.
This misfortune is also manifested in the fact that in the traditional thinking framework, no matter how hard and improved people can improve the energy-saving effect of insulating glass and improve the durability of sealing life, they can not have both. Although the four-sided gusset aluminum spacer is changed to the aluminum spacer of the continuous curved tube, the sealing life of the insulating glass is further improved, but the problem of poor energy saving effect is still not solved.
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