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The main factors affecting the energy-saving performance of insulating glass are: glass, spacers (frames) and gases. Whether white glass or low-emissivity glass is chosen for the glass, there are cold sides (aluminum spacers) or warm sides for the spacers, air for gases or inert gases such as argon. Under the same conditions, the energy saving effect of hollow glass with white glass, air and cold edge is the worst, and the energy saving effect of low glass, argon-filled and warm-edged hollow glass is the highest. .
The main factors affecting the durability and sealing life of insulating glass include: insulating glass sealant, sealing structure, spacer, desiccant (molecular sieve), and manual operation quality. It has been proved that the sealing life of the hollow glass using the double-pass seal, the continuous spacer and the 3A molecular sieve is the longest, while the sealing life of the insulating glass using the single-pass sealing, the four-side gusseted aluminum spacer and the 4A molecular sieve is shorter. The 20-year tracking results of the actual use of insulating glass by the North American Hollow Glass Association also confirms this. In addition, the result of the accelerated aging test of insulating glass (P1 test) shows that the difference in the expected sealing life of the insulating glass using the sealing structure of different intervals is enormous, the short is only 2 months and the long is more than 100 years.
With the same other conditions, the use of different spacers directly affects the energy saving performance and durability of the insulating glass. However, for a long period of time, people generally use aluminum spacers (mainly four-side gussets) for the production of insulating glass. Although the sealing life is long, the high thermal conductivity results in poor energy-saving effect and direct condensation occurs on the edges of the insulating glass. . At the end of the 1970s, the composite strips (solid strips) appeared to have low thermal conductivity and improved energy efficiency compared to the use of aluminum spacers for the production of hollow glass, but unfortunately they also reduced seal life.
This misfortune is also manifested in the fact that in the traditional thinking framework, no matter how hard people work hard to improve and improve the energy-saving effect of insulating glass and improve the durability of the seal life, they can not have both. Although the aluminum spacing bars with four-side gusset-angle aluminum spacers were changed to continuous curved tubes, the sealing life of the insulating glass was further improved, but the problem of poor energy-saving effect was still not solved.
At the end of the 1980s, two Canadian scientists who were courageous and enterprising in their challenges developed for the first time a pair of contradictory methods to solve the problem of energy saving and durability of hollow glass, namely the super spacer, which caused a revolution in the hollow glass industry. Super spacers are continuous spacer strips using a silicone microporous structure material containing no metal, containing 3A molecular sieves. Features are the smallest thermal conductivity, can greatly increase the temperature around the edge of the insulating glass up to 200-300%, to achieve 40% of the energy efficiency of low-emissivity glass, greatly reducing the degree of condensation around the edge of the glass. The use of super spacers for the production of hollow glass uses a reversed double-pass sealing method, which gives the insulating glass an excellent durability and sealing life of more than 100 years. According to North America, using super spacers to make insulating glass, hollow glass made with super spacers not only has the best energy-saving performance, but also fundamentally eliminates after-sales service (complaints) calls due to its excellent durability and sealing life. In North America, manufacturers of insulating glass using super spacers have given the end user a written commitment of 20 years for the longest shelf life in the industry, while other manufacturers give a shelf life of only 5 years, 10 years, or up to 15 years.
The significance of improving the durability and sealing life of insulating glass is that the energy saving of insulating glass is not only a short-term, static behavior, but also a long-term and dynamic concept. Among the numerous spacing systems, the super spacer is the only spacer that enables the insulating glass to maintain an optimal energy saving state for a long period of time during use. As a result, the direct and indirect economic benefits it brings to manufacturers are the reduction of the huge cost of after-sales service, and the higher profitability due to the higher price due to product differentiation. From the perspective of the end-user, although its purchase cost is high, due to its significant energy-saving effect and long-term benefits brought about by the seal life, the investment will produce a long-term rich profit. In North America, manufacturers of hollow glass windows using super spacers are known as Cadillac hollow windows when marketing hollow windows, for the simple reason that they use Cadillac bays in bays.
In summary, the energy saving, durability and sealing life of insulating glass are all very important for insulating glass. The emergence of super spacers solves the contradiction between energy saving and durable seal life for the first time. For any responsible company, it should be established that we are marketing not only an ordinary hollow glass, but also a concept. To make products, we must be responsible to customers and the society. To make insulating glass, we must do quality and high-grade products. We must provide users with a written commitment of at least 20 years of shelf life.
Hollow glass must meet two basic requirements: energy savings and durability and seal life. If the energy saving effect of an insulating glass is poor, even if the durability and seal life is longer, it is a low grade insulating glass. On the contrary, if the energy saving performance of the insulating glass is good, but the durability and the sealing life are short, it is not people's pursuit. Obviously, the ideal insulating glass should have the best energy-saving effect and the longest sealing durability at the same time. Both are two aspects of a problem and they are indispensable.