The difference between aluminum alloy and plastic steel window
The strength of aluminum alloy is 3 times that of plastic, and the wind pressure resistance is 2 grade higher than that of plastic steel. The cross-sectional area of ​​the aluminum alloy window frame is only 1/3 of that of the plastic steel window frame, and the weight of the window frame is much lighter. Due to the low strength and rigidity of the steel doors and windows, although the steel lining is added, its wind pressure resistance and watertight performance are two grades lower than that of the aluminum alloy window. Just because the steel lining of the plastic window is not connected to the complete frame system in the cavity angle of the profile, the plastic welding angle of the window frame, the fan corner and the butyl byte is relatively low, so it should be used cautiously on the high-rise building. Weather resistance and corrosion resistance The weather resistance of aluminum alloy is better than that of plastic, and it can maintain no discoloration for more than 10 years. PVC materials will age. At present, China's plastic doors and windows are mainly based on the lead salt system formula of Germany and Austria, and some enterprises adopt the American organic tin body formula. The domestic artificial accelerated photoaging test shows that the white profile containing the lead salt stable system is easily stained and stained after photoaging, and after 1500 hours of light irradiation, the color is significantly yellowed, and the organic system formula is better. In addition, the surface of the plastic window will be roughened by weathering. After a few years, the weathering layer will be 0.3-0.4mm, and a layer of polyvinyl chloride will stop decomposing underneath. The polymer PVC resin will break under the action of ultraviolet rays. The surface of the material is tarnished and pulverized, thereby degrading the mechanical properties of the profile. Airtight performance Because the plastic window is welded because of the frame and fan structure, its airtight performance is slightly better than that of the screwed aluminum alloy window. However, the aluminum alloy window profile has a high precision and the frame and fan are tightly matched, so the two are still in the same At a level. Safety and environmental protection Aluminum alloy is resistant to high temperature and does not support combustion; it is a good conductor and can be protected from lightning and anti-static; it can be recycled and used for environmental protection. Plastic is not resistant to high temperature and combustion; it is an insulator, but it needs anti-static; it is slow to degrade and cannot be recycled. Slow combustion will release toxic gas, which has an impact on the environment. Deformation The coefficient of linear expansion of plastic is three times that of aluminum alloy. Plastic windows are susceptible to heat deformation, cold and brittle, and poor dimensional and shape stability, often using the rigidity of the glass to prevent deformation of the window frame. Decorative The aluminum alloy is rich in color and strong in decoration. The use of heat-insulating and energy-saving windows can achieve the indoor and outdoor two-color decorative effect, which can meet the individualized requirements of different quality real estate and commercial buildings. Scope and development trend Aluminum alloy doors and windows have high strength, good rigidity, light weight, good fire resistance, weather resistance, corrosion resistance and environmental protection. The thermal insulation effect has been greatly improved, the color is rich, the process is mature, the cost performance is high, and the acid and alkali are produced. Corrosive environment is suitable for all kinds of occasions, especially medium and high-grade quality real estate and office buildings. Coastal and developed cities, which are the first to use plastic windows, have begun to use aluminum alloy doors and windows in large quantities. At the same time, according to the national environmental protection, energy-saving policy requirements and the development rules and status quo of the building door and window industry, aluminum alloy doors and windows will be used in large quantities, especially in the middle and high-grade aluminum alloy doors and windows with insulating glass. Concerned about surprises Label: the difference between aluminum alloy and plastic steel window Previous: Maintenance skills of plastic steel window Next: Solid wood composite door "low carbon" performance is recognized
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