Aluminum foam has excellent physical, chemical and mechanical properties as well as recyclability. These outstanding properties of foam aluminum make it have broad application prospects in today's material field, and are promising engineering materials, especially in the transportation industry, aerospace industry and building structure industry.
Aluminum foam Performance advantages:
Light weight: density is 0.1-0.4 times that of metal aluminium.
High specific stiffness: Its bending specific stiffness is 1.5 times that of steel.
High damping performance and shock energy absorption: the damping performance is 5-10 times as much as that of metal aluminium. When the foam aluminum with porosity of 84% has 50% variants, it can absorb more than 2.5MJ/M3C energy.
Good acoustic function: 1, sound insulation performance (closed cell): when the sound frequency is between 800 and 4000HZ, the sound insulation coefficient of closed cell aluminum foam is more than 0.9. 2, sound absorption properties (micro vias and through holes): when the sound frequency is between 125---4000HZ, the sound absorption coefficient of the foamed aluminum is up to 0.8, and the average absorption coefficient of the octave is more than 0.4.
Excellent electromagnetic shielding performance: when the electromagnetic wave frequency is between 2.6 and 18GHZ, the electromagnetic shielding capacity of aluminum foam can reach 60 - 90dB.
Good thermal performance: the thermal conductivity of closed cell aluminum foam with porosity of 80---90% is 0.3 - 1W/m#8226; K, equivalent to marble. The porous aluminum foam has good heat dissipation under forced convection conditions due to its interconnected pores.
Non-combustion and good heat resistance. _Corrosion resistance, good weather resistance, low moisture absorption, non-aging, non-toxic.
Easy to process: easy to cut, drill and cementing; flexible to the desired shape by moulding; surface treatment with organic or inorganic paint; two-sided skin, forming a large-scale light, high rigidity board.
It is easy to install: aluminum foam can be installed at high places without mechanical lifting equipment, such as ceiling, walls and roofs, etc., which can be mechanically or directly connected and fixed with screws, or can be pasted on walls or ceilings with adhesive.
The "sandwich" structure formed by metal sheet - aluminum foam - metal sheet inherits the excellent properties of aluminum foam, and has high bending strength. It can be used as a new type of building material, high rigidity structural parts of rolling stock and so on.
Multifunctional compatibility of the above performance.
