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Is plastic steel door and window good or aluminum alloy door and window good? Make a comprehensive comparison
Editor: liefan, July 20, 2019 11:00:07
Now home decoration, the choice of doors and windows can be said to be multifarious, and the two most used are plastic steel doors and windows and aluminum alloy doors and windows, which of these two doors and windows is more convenient, more effective and more popular, let's have a look!

 Is plastic steel door and window good or aluminum alloy door and window good? Make a comprehensive comparison

Is plastic steel door and window good or aluminum alloy door and window good? Make a comprehensive comparison

1、 Comparison of plastic steel doors and windows with aluminum alloy doors and windows:

1. In terms of strength:

The wind pressure resistance of high-grade plastic steel doors and windows is almost the same as that of aluminum alloy doors and windows. In Shanghai, high quality plastic steel doors and windows have been used in 40 storey residential buildings, which can fully meet the requirements of typhoon resistance.

2. In terms of durability:

According to the research data of linghe.com, high-grade plastic steel doors and windows have been used in Europe for more than 30 years. The durability of aluminum alloy doors and windows is good. However, since the materials of gongs, nails and guide rails are non aluminum metals, it has been proved that electrolytic corrosion will occur. Many old aluminum alloy doors and windows are not flexible to push and pull because of this reason.

3. In terms of tightness:

Due to the high-grade plastic steel doors and windows with high dimensional processing accuracy, the lap joint of frame and fan is designed elaborately, and the corner is welded seamlessly. A lot of plastic steel door and window companies produce adhesive strips and windows together. They have no gap and simplify the assembly process. The whole window is airtight and dustproof. High grade plastic steel doors and windows have a set of independent and scientific drainage system, equipped with wind cover to prevent rainwater from flowing backward. Due to the common use of rubber and plastic strips in aluminum alloy doors and windows, cracks appear at the corner due to the shrinkage of rubber plastic strips, so the sealing performance decreases.

4. In terms of impermeability:

The waterproof performance of high-grade plastic steel doors and windows is due to aluminum alloy doors and windows. The frame of plastic door and window itself is welded, and there is no water seepage problem of the window itself. Installation and practical use of various waterproof materials, such as: polyurethane foam plastic sealant, outdoor side concave joint single use cement mortar installation, the outer frame without other waterproof technology, the window itself frame is riveted, there is a gap, easy to water seepage. The drain hole of aluminum alloy is in direct contact with the room. There is no way to prevent rainwater from flowing back.

5. In terms of surface color:

Aluminum alloy surface treatment: anodizing, coloring; electrophoretic painting; powder spraying; fluorocarbon paint spraying.

Plastic can also be colorful. In addition to spray water, ASA, PMMA surface coextrusion, but also paste imitation wood grain film, the effect is like wood window, etc. new surface treatment process is widely used in the processing of plastic steel profiles.

6. In terms of heat preservation:

The thermal conductivity of plastic profile is 1 / 1250 of aluminum alloy and 1 / 357 of steel. In the same two rooms, the room with plastic steel doors and windows is about 5 ℃ higher than that with aluminum alloy in winter and 5 ℃ lower in summer, so the energy saving effect is very obvious.

7. Sound insulation:

Because most of the profiles of plastic steel doors and windows are designed with three cavities, or even four or five cavities, the sound insulation performance of plastic doors and windows is as high as 35 decibels, which is far more than that of aluminum alloy with single cavity structure.

8. In terms of lightning protection:

Plastic profiles are insulators, and the steel in the mold cavity cannot be connected to form a loop, so there is no need for lightning protection and grounding measures, thus increasing the cost.

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