What is the difference between plastic steel doors

2022-07-22
  • Detail

1、 In terms of strength, high-grade plastic steel doors and windows are almost the same as aluminum alloy doors and windows in terms of wind pressure resistance. 2、 In terms of durability, foreign research data show that 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, but because the materials of gongs, nails and guide rails are non aluminum

first, strength

high grade plastic steel doors and windows are almost the same as aluminum alloy doors and windows in terms of wind pressure resistance

second, durability

foreign research data show that 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, but because the materials of gongs, nails and guide rails are non aluminum metals, practice has proved that electrolytic corrosion will occur. This is why many old aluminum alloy doors and windows are not flexible to push and pull

III. in terms of sealing

due to the high dimensional processing accuracy of high-grade plastic steel doors and windows, the design of frame and fan lap joints is exquisite, and the corners are welded seamlessly. The high-grade plastic steel doors and windows have an independent scientific drainage system, equipped with a wind shield to prevent rainwater from pouring back. Since rubber and plastic strips are commonly used for aluminum alloy doors and windows, the sealing performance is reduced due to the gap at the fan corner caused by the shrinkage of rubber and plastic strips

IV. in terms of water permeability, the waterproof performance of high-grade plastic steel doors and windows is better than that of aluminum alloy doors and windows. The frames of plastic doors and windows are welded, so there is no water seepage problem of the windows themselves. The installation also uses various waterproof materials, such as polyurethane foam joint sealant, neutral sealant embedded in the outdoor side concave joint, and neutral silicone sealant poured inside. The aluminum alloy doors and windows are only installed with cement mortar, and the outer frame has no other waterproof technology. The frame of the window itself is riveted, with cracks and easy to seep water. The drainage hole of aluminum alloy is in direct contact with the room, which cannot prevent rainwater from pouring back

v. surface color

aluminum alloy surface treatment: anodizing, coloring; Electrophoretic painting; Powder spraying; Fluorocarbon paint spraying

plastic profiles can also be colorful. In addition to spraying technology (fluorocarbon paint and DuPont paint are selected), ASA and PMMA can be coextruded on the surface, and wood grain film can be pasted. New surface treatment processes such as wood window are widely used in the processing of plastic steel profiles

VI. thermal insulation

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

VII. In terms of sound insulation

because most plastic steel door and window profiles are designed with three cavities, or even four or five cavities, the sound insulation performance of plastic doors and windows reaches more than 35 dB, which is far from being comparable to that of aluminum alloy with single cavity structure

VIII. Lightning protection

plastic profiles are insulators, and the steel lining in the cavity is not connected to form a circuit, so lightning protection and grounding measures are not required. Aluminum alloy is a good conductor. Lightning protection and grounding measures must be taken on high-rise buildings, so as to increase the cost

IX. economy

high grade plastic steel doors and windows have a large one-time investment, but the follow-up energy saving and power saving, with few sequelae; The price of aluminum alloy doors and windows is a little lower, but there are many sequelae problems such as follow-up electricity and water seepage. Therefore, in the long run, the economy of plastic steel doors and windows is better

10. In terms of national policies, aluminum alloy is a high energy consuming industry, which has been discouraged by the state. There are many sources of PVC, including calcium carbide production. Calcium carbide ore is relatively rich in resources in China. The use of plastic instead of metal is the direction of social development. As ordinary people, we should also share our worries and solve difficulties for the country, actively respond to the call of the state, and use more high-end plastic steel doors and windows with good results. Save the aluminum alloy and use it in places more suitable for its use, such as aerospace vehicles, vehicles, etc

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