Doors and windows are one of the important outer protective structures of buildings, which play the functions of sheltering from wind and rain, heat insulation and sound insulation, lighting and ventilation, etc., and play an important role in people's work and living environment. Some say it is the eye of the building and one of the key parts to beautify the interior and exterior of the building. To this end, it will be our future direction to strive to make the doors and windows we produce in the future achieve high-quality water quality. Aluminum alloy doors and windows have good performance, light weight, beautiful appearance (with metallic luster, can be processed into various shapes and colors), good lighting (smaller frame), durable (no aging, atmospheric corrosion resistance), easy to recycle and recycle profiles. The characteristics of high utilization rate and no environmental pollution are favored by people. However, the poor thermal insulation performance of the 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 of aluminum alloy doors and windows, and it is also the development direction of the aluminum door and window industry.

1. Improve the structural form and realize diversified system design

In order to improve the performance and grade of the existing doors and windows, the structural design must be improved.

The low-level structure of material saving and low price realizes the transition from sliding windows to casement windows with better performance, and realizes diversified system designs such as single-layer, double-layer, three-layer and small opening and large fixing.

2. Key development areas of raw materials

  ① The general requirements of the frame material should be good strength, good thermal insulation performance, easy to make into various shapes, easy to recycle and conducive to environmental protection. Aluminum alloy window frames should be made of broken bridges or composites to improve their thermal insulation properties.

  ②The use of insulating glass should be promoted for glass, and the use of Low-E (low radiation) insulating glass should be promoted in the north. In the south, in areas dominated by solar radiation heat, the use of solar-coated glass should be promoted. Foreign developed countries basically do not use single glass and white glass, because they are not conducive to energy saving and improving the living environment.

  ③Promote the use of double sealing and insulating glass made of polysulfide insulating glass glue. The insulating glass spacer should adopt a continuous angle structure. If the 4-corner plug-in type is used, butyl glue must be used for sealing at the joint. deal with. Single-pass sealed insulating glass is not available, and insulating glass with secondary sealing with silicone structural adhesive is also not advisable, because their service life is relatively short.

  ④ In addition, the so-called double glass is also not available. In order to reduce the heat transfer coefficient and lower the price, some window types use double glass, that is, separate the second layer of glass or install it on the window with ordinary sealant, without the use of molecular sieve to absorb moisture, only a single seal. Generally, the sealant is not resistant to aging. It will not be used for a long time, and it will accumulate dust and cannot be wiped, which affects the sight and is extremely unsightly. Because even the insulating glass made of polysulfide insulating glass glue, if it is only sealed with a single pass, the sealing life is only five years, which is expressly prohibited in the glass curtain wall specification. The lifespan is even shorter. One of the most critical aspects of construction projects is the service life, the issue of durability. Using this kind of double glass is only a temporary stopgap measure, which is very inadvisable.

  ⑤Furthermore, it is not advisable to use 3mm thick glass on the doors and windows of buildings. Safety is also a concern because 3mm thick glass is used on windows with larger grid areas. If you want to use it, it should also be used after the strength calculation, under the premise of ensuring safety, and must not be used indiscriminately. This accessory is designed to be durable, easy to use and beautiful. Accessories have an important impact on the performance of doors and windows, and at the same time play an important decorative role, so they cannot be ignored.

3. The processing of aluminum alloy doors and windows must be refined

Because only in this way, can it have good performance and better environmental beautification. The aluminum door, window and curtain wall industry must establish the awareness of competing products, and must prevent a small number of products from resisting inferior products. In order to improve the thermal insulation and sound insulation performance of products, it is necessary to promote the use of thermal insulation aluminum profiles, insulating glass and high-quality accessories. Make it the mainstream of my country's 21st century aluminum door, window and curtain wall industry.