aluminium foam in construction has bellow Features:
□ Light: the density of metal aluminum 0.1-0.4 times;
■ High specific stiffness: its flexural stiffness is 1.5 times that of steel;
□ High damping shock absorption and impact energy absorption: damping performance is 5-10 times that of aluminum metal.Aluminum foam with a porosity of 84% can absorb energy above 2.5MJ/M3C when it is deformed by 50%.
1. Sound insulation performance (obturator) : when the frequency of sound waves is between 800 and 4000HZ, the sound insulation coefficient of obturator aluminum foam is more than 0.9.
2. Sound absorption performance (microthrough-hole and through-hole) : When the acoustic frequency is between 125-- 4000HZ, the sound absorption coefficient of aluminum foam through the hole can be as high as 0.8, and the average sound absorption coefficient of frequency octave exceeds 0.4
■ Excellent electromagnetic shielding performance: when the electromagnetic wave frequency is between 2.6 -- 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 is marble.Through - hole aluminum foam has good heat dissipation property under forced convection.
□ No combustion and good heat resistance.□ Corrosion resistance, good weather resistance, low moisture absorption, no aging, no toxicity.
□ Easy processing: cutting, drilling, cement convenient;Can be bent into the desired shape by moulding;Surface treatment with organic or inorganic paint;Can be skinned on both sides to form a large size light weight, high stiffness plate.
■ Easy to install: aluminium foam in construction can be installed in high places without the need for mechanical lifting equipment, such as: ceiling, walls and roofs, etc., can be mechanically or directly bolted and fixed, can also be glued to the wall or ceiling with adhesive.
Metal sheet - aluminium foam in construction - metal sheet formed by the "sandwich" structure inherited the excellent performance of aluminum foam, and has a high bending strength, can be used as new building materials, high stiffness of rolling stock structural parts, etc.
