What are the specific requirements for the performance of aluminum veneer curtain walls?
Publish Time: 2024-08-22
The performance requirements of aluminum veneer curtain wall are as follows:
Physical properties:
Strength: It has high strength and can withstand various external forces such as self-weight, wind load, earthquake, etc. It is not easy to deform or damage. The general tensile strength is 100-280N/mm².
Stiffness: It has sufficient stiffness to ensure that it will not be excessively flexed or deformed due to force during use, affecting the flatness and appearance of the curtain wall.
Weight: Relatively light, usually 3.0mm thick aluminum plate weighs about 8kg per square plate, which is 1/3 of the weight of stainless steel, which can reduce the load on the main structure of the building.
Durability:
Corrosion resistance: Under various environmental conditions, such as acid rain, salt spray, humidity, etc., it has good corrosion resistance, is not easy to rust or corrode, and has a long service life. For example, aluminum veneer treated with fluorocarbon paint can last up to 25 years without fading.
Weather resistance: It can withstand the test of long-term natural climate conditions such as sun, rain, wind, alternating hot and cold, and will not age, crack, fade, etc.
Wear resistance: The surface has a certain wear resistance, can resist friction, scratches, etc. in daily use, and maintain good appearance quality.
Fire resistance: It reaches a certain fire resistance level. When a fire occurs, it can play a certain flame retardant role, delay the spread of fire, and buy time for personnel evacuation and fire rescue. For example, the fireproof curtain wall aluminum veneer can reach the B1 grade standard.
Waterproof performance: The aluminum veneer made of metal material has good waterproof performance, which can effectively prevent rainwater, snow water, etc. from penetrating into the internal wall, and avoid problems such as moisture, mold, and cracking of the wall.
Sound insulation performance: If there is a sound insulation requirement, sound insulation materials such as sound insulation cotton can be installed on the inside of the aluminum plate to improve the sound insulation effect of the curtain wall and reduce the impact of external noise on the indoor environment.
Thermal insulation performance: In some buildings that require thermal insulation, thermal insulation materials such as rock wool and polystyrene boards can be added to the aluminum veneer curtain wall to reduce the loss of indoor heat or the introduction of external heat, which plays a role in energy saving and thermal insulation.
Process performance:
Processability: It is easy to process and can be processed into various complex geometric shapes such as planes, arcs, curved surfaces and spheres through cutting, bending, stamping, welding and other processes to meet the different needs of architectural design.
Forming accuracy: The dimensional accuracy after processing is high, which can ensure that the splicing between the curtain wall panels is tight and flat, the gaps are uniform and consistent, and the appearance is beautiful.
Surface treatment performance: Various surface treatments can be performed, such as fluorocarbon spraying, powder spraying, anodizing, roller coating, laminating, etc., to obtain different colors, gloss, texture and pattern effects, and the surface coating has strong adhesion, good uniformity, and is not easy to fall off or fade.
Environmental protection performance: The material can be recycled and reused, meets environmental protection requirements, and has a high recycling residual value. During production and use, it has little pollution to the environment.
Airtightness and watertightness: Good airtightness can reduce air infiltration and improve the energy-saving effect of the building; watertightness can prevent rainwater from leaking into the room and ensure the waterproof function of the curtain wall. It is usually achieved through reasonable structural design, the setting of sealing strips and the control of construction and installation quality.
Anti-deformation performance: It can adapt to the deformation of the main structure of the building under various loads, such as settlement, displacement, tilt, etc., without loosening or falling off of the curtain wall panels.
Wind resistance: In strong wind areas, it must have sufficient wind resistance and be able to withstand the force of strong winds without panel shedding, tearing and other damage. Wind resistance is guaranteed by the setting of reinforcing ribs, reasonable panel division and reliable connection methods.
Cleaning and maintenance performance: The surface is not easy to be stained. Even if there is dust, stains, etc., it is easy to clean and maintain. It can be restored to a clean and tidy appearance by simple wiping and flushing, reducing maintenance costs.
Lightning protection performance: Although the aluminum veneer itself is a metal material that can conduct electricity, the curtain wall system should have a complete lightning protection design and measures to safely conduct lightning current to the earth to avoid lightning strikes causing harm to buildings and personnel.
Earthquake resistance: When an earthquake occurs, the curtain wall should have a certain earthquake resistance to maintain the integrity and stability of the structure without collapse, breakage or other dangerous situations.
