Comprehensive Analysis of Performance Characteristics of Aluminum Alloy Window and Plastic Steel Window
Release time:
2018-07-18
1. Wind pressure resistance and water tightness: Plastic steel windows have low material strength and rigidity. Although they are reinforced by processed lining steel, their wind pressure resistance and water tightness are about two grades lower than aluminum windows. Moreover, since the lining steel of the plastic-steel window is not connected into a complete frame system at the corners of the inner cavity of the profile, the plastic welding angle strength of the window frame, the four corners of the fan and the T-shaped node is relatively low, according to the analysis of the 425 batches of plastic-steel window three-performance examples submitted by Shanghai enterprises at the end of 1998, it is seriously pointed out that "plastic windows should be used carefully in high-rise buildings." 2. Air tightness: Since the frame and fan components of plastic-steel windows are welded, their air tightness should be slightly better than that of screwed aluminum alloy windows. However, the dimensional accuracy of aluminum window profiles is higher, and the frame and fan fit tightly, so the two are still at the same level. 3. Thermal insulation performance: The thermal insulation performance of aluminum windows is not as good as that of plastic steel windows, but the ratio of the heat transfer coefficient of the two whole windows is only 1.36 times (single-layer windows) and 1.44 times (single-frame double-glass windows). 4. Lighting performance: The lighting performance of plastic-steel windows is worse than that of aluminum windows. The shading area of single-frame components is about 10% larger than that of aluminum windows. The vision and decoration effect are poor, which is not conducive to energy saving and consumption reduction of architectural lighting. 5, sound insulation performance: aluminum window and plastic steel window gap sealing level is basically the same, the sound insulation performance is basically the same. 6, fire performance: fire retardant PVC plastic steel window fire performance relative to the combustible wood window is better, but compared to the non-combustible aluminum alloy window is poor. 7. Lightning protection and electrostatic problems: Aluminum alloy is a good conductor, so when it is used as a building envelope, effective grounding measures should be taken to prevent lightning protection facilities and electrostatic phenomena. 8, decorative: plastic steel windows as building windows, can only be white-based, can not meet the colorful needs of all kinds of building exterior wall decoration. 9, aging problem: PVC plastic profiles will age, polymer PVC resin under the action of ultraviolet light, macromolecular chain fracture, so that the material surface loss of luster, color powder, the mechanical properties of the profile decreased. The aluminum alloy has the function of anti-aging. 10, deformation and expansion problem: plastic steel window is easy to heat deformation, cold brittle, size and shape stability is poor, often need to use the rigidity of the glass to prevent the deformation of the window frame. The aluminum alloy has the advantages of high temperature resistance and not easy to deform.
1, wind pressure resistance and water tightness: due to the low material strength and rigidity of
plastic steel windows, although they are reinforced by processed lining steel, their wind pressure resistance and water tightness are about two grades lower than those of aluminum windows. Moreover, since the lining steel of the plastic-steel window is not connected into a complete frame system at the corners of the inner cavity of the profile, the plastic welding angle strength of the window frame, the four corners of the fan and the T-shaped node is relatively low, according to the analysis of the 425 batches of plastic-steel window three-performance examples submitted by Shanghai enterprises at the end of 1998, it is seriously pointed out that "plastic windows should be used carefully in high-rise buildings."
2, air tightness: since the frame and fan components of
plastic steel window are welded, its air tightness should be slightly better than that of the bolted aluminum alloy window, but the aluminum window profile has higher dimensional accuracy and the frame and fan fit tightly, so the two are still at the same level.
3. Thermal Insulation Performance: The thermal insulation performance of aluminum windows is not as good as that of plastic steel windows, but the ratio of the heat transfer coefficient of the two whole windows is only 1.36 times (single-layer windows) and 1.44 times (single-frame double-glass windows).
4, daylighting performance: the daylighting performance of
plastic steel window is worse than that of aluminum window, the shading area of its single frame member is about 10% larger than that of aluminum window, and the visual field and decoration effect are poor, which is not conducive to energy saving and consumption reduction of building lighting.
5, Sound Insulation Performance: The gap sealing level of
aluminum window and plastic steel window is basically the same, and its sound insulation performance is also basically the same.
6, fireproof performance: the fireproof performance of
flame retardant PVC plastic steel window is better than that of combustible wooden window, but it is worse than that of non-combustible aluminum alloy window.
7, Lightning Protection and Electrostatic Problems:
Aluminum Alloy is a good conductor, so when it is used as a building envelope, effective grounding measures should be taken to prevent lightning protection facilities and electrostatic phenomena.
8, decoration:
plastic steel window, as the exterior window of the building, can only be mainly white, which can not meet the needs of various kinds of building exterior wall decoration.
9, aging problem:
PVC plastic profile will age. Under the action of ultraviolet rays, the macromolecular chain of polymer PVC resin will break, causing the surface of the material to lose luster, change color and powder, and the mechanical properties of the profile will decrease. The aluminum alloy has the function of anti-aging.
10, deformation and expansion problems:
plastic steel windows are easy to be deformed by heat, become brittle when cold, and have poor stability in size and shape. It is often necessary to use the rigidity of glass to prevent window frame deformation. The aluminum alloy has the advantages of high temperature resistance and not easy to deform.
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