First, the strength aspect
High-grade plastic steel doors and windows and aluminum alloy doors and windows are almost the same in terms of wind pressure resistance. In Shanghai, Royal brand plastic steel doors and windows have been used in more than 40-story residential buildings, which can fully meet the requirements of typhoon resistance.
Second, durability
Foreign research data shows that high-grade plastic steel doors and windows have been used in Europe for more than 30 years. Royal plastic profiles have been tested for accelerated aging tests for 6,000 hours according to European standards. The performance has reached and greatly exceeded the requirements of the latest European EN12608-2002, which is second to none in profiles. dispute. The durability of aluminum alloy doors and windows is good, but because the nails and guide rail materials are non-aluminum metal, it has been proved that electrolytic corrosion will occur. Many old aluminum alloy doors and windows are not flexible and are caused by this reason.
Third, the aspect of sealing
Due to the high precision of high-grade plastic steel doors and windows, the frame fan joints are exquisitely designed, and the corners are seamlessly welded. The soft and hard coextrusion technology like the royal brand steel doors and windows is produced together with the form, without gaps and simplified. In the assembly process, the airtightness and dustproofness of the entire window are excellent. The high-grade plastic steel doors and windows have an independent scientific drainage system with a windshield to prevent rainwater from instilling. Since aluminum alloy doors and windows are generally interspersed with rubber strips, the sealing performance is degraded due to the shrinkage of the rubber strips.
Fourth, anti-seepage aspects
The waterproof performance of high-grade plastic steel doors and windows is better than that of aluminum alloy doors and windows. The frame of the plastic door and window itself is welded, and there is no water seepage problem of the window itself. The installation also uses a variety of waterproof materials, such as: polyurethane foam sealant, outdoor side recess embedded in neutral sealant, the inside is filled with a neutral silicone sealant. The aluminum alloy door and window plugs are directly installed with cement mortar, and the outer frame has no other waterproofing process. The frame of the window itself is riveted, has a gap, and is easy to seep. The drainage hole of the aluminum alloy is directly in contact with the room and cannot prevent rainwater from being poured.
Fifth, the surface color aspect
Aluminum alloy surface treatment: anodizing, coloring; electrophoretic painting; powder coating; fluorocarbon paint spraying.
Plastic profiles can also be rich in color. In addition to spraying technology (selected fluorocarbon coating and DuPont coating), ASA, PMMA surface co-extruded, can also imitation wood grain film, the effect of such as wood window and other new surface treatment process is widely used in the processing of plastic steel profiles.
Sixth, insulation
The thermal conductivity of plastic profiles is 1/1250 of aluminum alloy and 1/357 of steel. The same two rooms, the room with plastic steel doors and windows, is about 5 °C higher than aluminum in winter and about 5 °C in summer. The energy saving effect is very obvious.
Seven, sound insulation
Since plastic steel door and window profiles are mostly three-chamber design, even four-cavity and five-cavity, the sound insulation performance of plastic doors and windows is more than 35 decibels, which is far from comparable to single-cavity aluminum alloy.
Eight, lightning protection
The plastic profile is an insulator, and the steel lining in the cavity cannot be connected to form a loop, so there is no need to prevent lightning grounding. Aluminum alloys are good conductors and must have lightning protection grounding on high-rise buildings to increase costs.
9. Economic aspects
High-grade plastic steel doors and windows have a large investment, but the subsequent energy-saving and power-saving, less sequelae; aluminum alloy doors and windows prices are lower, but the follow-up costs, water seepage and other sequelae problems. Therefore, in the long run, the economy is still good for plastic steel doors and windows.
X. National policy
Aluminum alloy is a high-energy-consuming industry. The country has always encouraged development, and there are many sources of PVC. Among them, there are calcium carbide methods. The calcium carbide mine has rich resources in China. The use of plastic instead of metal is the development direction of society. As our people also It is necessary to solve problems for the country, actively respond to the call of the state, and use high-grade plastic steel doors and windows with good effects. Save the aluminum alloy to a place more suitable for its use, such as aerospace aircraft, vehicles and so on.
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Lollipop Packing Machine
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