The properties of aluminum foam and its current applications in the construction industry

Aluminum Foam [https://www.beihaicomposite.com/aluminum-foam-tag/] has a high heat resistance, and does not melt even at the alloy's melting point. The melting temperature range for general aluminum alloys is between 560~700, but aluminum foam [https://www.beihaicomposite.com/] does not melt even when heated to 1400. Furthermore, it does not release harmful gases at high temperatures, and in many cases, it can replace foamed resins and asbestos products as a thermal insulation and heat-resistant Material [https://www.beihaicomposite.com/material/].

Aluminum foam can dissipate the kinetic energy of air into heat through the vibration of its pore walls; thus, it can be used as a sound-absorbing panel in noise-reducing linings for highways, railways, subway tunnels, subway stations, conference halls, and large equipment rooms. By changing the thickness of the air layer behind the sound-absorbing panel, the main frequency of the aluminum foam panel's sound absorption coefficient can be controlled, allowing for the creation of sound-absorbing panels for different types of noise. Additionally, aluminum foam panels do not absorb moisture; the sound absorption rate does not decrease in humid environments, making it the best sound-absorbing material for such conditions.

In the construction industry, aluminum foam has a wide range of applications. For example, manufacturing elevators with aluminum foam can greatly reduce their weight, thereby decreasing energy consumption, while the excellent energy absorption performance of aluminum foam ensures the safety of the elevator. If aluminum foam is used as a decorative material, it is both lightweight and aesthetically pleasing, and it also provides fireproofing and soundproofing effects.

In construction, another typical need is for high-rise curtain walls made from aluminum foam. This most advanced type of curtain wall has energy-absorbing, sound-insulating, and heat-insulating functions. It can buffer the impact of wind pressure on high-rise buildings, provide thermal insulation and noise reduction, and improve comfort. The thermal conductivity of aluminum foam is not only related to its porosity but also to the distribution of its pores, with the latter playing a dominant role. If the foam cells extend perpendicular to the direction of heat flow, their ability to obstruct heat flow increases, and a "high thermal resistance wall" can even appear due to the connectivity in that direction, making it a very promising thermal insulation material.

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