Which is better than aluminum alloy doors and windows and plastic steel doors and windows? The following is my analysis report to customers: comprehensive analysis of the functional characteristics of aluminum alloy doors and windows and plastic steel doors and windows
1. Wind pressure resistance and watertight function:
due to the low material strength and rigidity of plastic steel doors and windows, although it has been strengthened lined steel after processing, its functions of wind pressure resistance and watertightness are about two grades lower than those of aluminum alloy doors and windows. Moreover, since the lined steel of plastic steel doors and windows is not connected into a intact frame system in the corner of the inner cavity of the profile, the plastic welding angle strength of the four corners of the window frame, door leaf and T-shaped node is low, according to the analysis of the three functional examples of 425 batches of plastic steel doors and windows submitted by Shanghai enterprises at the end of 1998, it is seriously pointed out that "plastic doors and windows should be carefully installed in high-rise construction."
2. Airtight function:
because the frame and fan components of plastic steel doors and windows are welded, their air tightness should be slightly better than that of screw-connected aluminum alloy doors and windows, but the dimensional accuracy of aluminum doors and windows profiles is relatively high. Frame, fan with sealant strip is also relatively tight, so the two are still in the same level.
3. Insulation:
the insulation of aluminum doors and windows is not as good as plastic steel doors and windows, but the ratio of the heat transfer coefficient of the two whole windows is only 1.36 times (single window) and 1.44 times (single frame double glass window).
4. Lighting function:
the lighting function of plastic steel doors and windows is worse than that of aluminum doors and windows. The shading area of single frame component is about 10% larger than that of aluminum doors and windows, and the visual field and decorative effect are poor, which is not conducive to building lighting to save energy and reduce consumption.
5. Sound insulation function:
there is no difference in the gap sealing degree between aluminum doors and windows and plastic steel doors and windows, and there is no difference in the sound insulation function.
6. Fire resistance:
the fire resistance of flame retardant PVC plastic steel doors and windows is better for combustible wooden window, but it is worse than that of uncombustible aluminum alloy doors and windows.
7. Comparison between lightning protection and static electricity:
aluminum Alloy is a metal conductor, so when it is used as a guardrail structure, grounding measures can play a role in lightning protection and avoid static electricity.
8. Decorative:
plastic steel doors and windows?? The exterior window can only be built in white?? The main, can not meet the rich and colorful needs of all kinds of building exterior wall decoration.
9. Comparison of service life:
PVC plastic profiles will age. Under the action of ultraviolet rays, macromolecular chains of polymer PVC resin will break, which will dim the appearance of the profiles, change color and powder, and reduce the use function of the profiles. While aluminum alloy has anti-aging characteristics.
10. Comparison between deformation and scaling:
plastic steel doors and windows are easy to be deformed by heat, become brittle when cold, and have poor stability in size and appearance. They often need to rely on the rigidity of glass to avoid window frame deformation. And aluminum alloy doors and windows
it has the advantages of resistance to hot and cold changes and not easy to deform.
From the above analysis, we can see that compared with plastic steel doors and windows, aluminum alloy doors and windows have more advantages, which are widely used doors and windows in the market at present, and are also the ideal choice for door and window agents.
