Aluminum alloy doors and windows have the characteristics of good performance, light weight, beautiful, good lighting, durable, easy to recycle and reuse profiles, no environmental pollution and so on. However, the poor thermal insulation performance of its frame material affects the performance of aluminum doors and windows. Therefore, improving its thermal insulation and energy-saving performance is the key technical problem to be solved in the future, and it is also the development direction of door and window enterprises. The following nine small series for you to summarize the breakthrough direction of improving the energy-saving performance of aluminum alloy doors and windows.
Improving structural design
In order to improve the performance and grade of existing doors and windows, it is necessary to improve the structural design, change the low-level structure which only pursues labor-saving, material saving and low-cost in the past, realizes the transition from mainly push-pull window to better performance casement window, and realizes the diversified system design of single-layer, double-layer, three-layer and small opening and large-scale fixation.
Pay attention to the choice of raw materials
① The general requirements of frame materials should be good strength, good heat insulation performance, easy to make into various shapes, easy to recycle and conducive to environmental protection. In order to improve the thermal insulation performance of aluminum alloy window frame, it is better to make the broken bridge or composite type.
② Insulating glass should be popularized for glass, and Low-E insulating glass should be used in North China. In the south of China, the use of solar coated glass should be promoted. Single glass and white glass are no longer used in developed countries because they are not conducive to energy conservation and improvement of living environment.
③ Double seal and insulating glass made of polysulfide insulating glass glue should be popularized. The insulating glass spacer should be of continuous curved angle structure. If the four corner plug-in type is used, butyl rubber must be used for sealing treatment at the joint. Single seal insulating glass is not available, and silicone structural adhesive used as secondary sealing insulating glass is not recommended, because their service life is relatively short.
④ In addition, the so-called double glass is not available. In order to reduce the heat transfer coefficient and reduce the price of some window types, double glass is used, that is, the two-layer glass is separated or the ordinary sealing glue is used to install on the window. The molecular sieve is not used to absorb the moisture, but only a single seal is used. General sealant is not resistant to aging, not for long, will enter dust, and can not be wiped, affecting the line of sight, very unsightly. The service life of the sealant is only five years if it is made of insulating glass. One of the most critical aspects of construction engineering is the service life, that is, durability. It is only a temporary and expedient measure to use this kind of double glass, which is very undesirable.
⑤ Moreover, it is not advisable to use 5mm thick glass on the doors and windows of buildings. Because 5mm thick glass is used in the window with large partition area, safety is also a worrying problem. If you want to use it, it should also be used after strength calculation under the premise of ensuring safety, and must not be used indiscriminately. All kinds of accessories are durable, easy to use and beautiful. Accessories have an important impact on the performance of doors and windows, but also play an important role in decoration, so it can not be ignored.
Aluminum doors and windows industry must establish a sense of quality, must stop the production of a small number of low-quality products. In order to improve the heat insulation and sound insulation performance of the products, it is necessary to popularize the use of heat-insulating aluminum profiles, insulating glass and high-quality accessories. At the same time, it is necessary to widely use various system designs to develop new products that are economical and in line with China's national conditions.