The foam aluminum plate is formed by adding a additive to pure aluminum or aluminum alloy, and is formed by a foaming process, and has both metal and bubble characteristics. It has low density, high absorption and shock resistance, high temperature resistance, strong fire resistance, corrosion resistance, noise reduction, low thermal conductivity, high electromagnetic shielding, strong weather resistance, filtration capacity, easy processing, easy installation and high forming precision. Surface coating is available.
Foam Aluminium sheets have excellent physical, chemical and mechanical properties as well as recyclability. These excellent properties of aluminum foam make it a promising application in today's materials field, and are very promising engineering materials, especially in the transportation industry, aerospace industry and building structure industry.
The performance characteristics are light: the density is 0.1-0.4 times of metal aluminum; the high specific stiffness: the bending specific stiffness is 1.5 times that of steel; the high damping shock absorption performance and the impact energy absorption rate: the damping performance is 5-10 of metal aluminum Times. When the aluminum foam having a porosity of 84% is changed by 50%, it can absorb energy of 2.5 MJ/cm3 or more. Good acoustic function: 1. Sound insulation performance (closed hole): When the sound frequency is between 800 and 4000HZ, the sound insulation coefficient of closed-cell foam aluminum is above 0.9. 2. Sound absorption performance (micro-through hole and through-hole): When the acoustic wave frequency is between 125---4000HZ, the sound absorption coefficient of the through-hole foam aluminum can be up to 0.8, and the average sound absorption coefficient of the octave is over 0.4. Excellent electromagnetic shielding performance: When the electromagnetic wave frequency is between 2.6 and 18 GHz, the electromagnetic shielding of aluminum foam can reach 60-90 dB. Good thermal properties: The porosity of the closed-cell foam aluminum with a porosity of 80---90% is 0.3-1W/m#8226;k, which is equivalent to marble. Through-hole foamed aluminum has good heat dissipation under forced convection due to the mutual communication of its pores. Does not burn and has good heat resistance. Good corrosion resistance, weather resistance, low moisture absorption, no aging, no toxicity. Easy to process: easy to cut, drill, and bond; can be bent into a desired shape by molding; can be surface treated with organic or inorganic paint; can be skinned on both sides to form a large-sized lightweight, high-stiffness board. Easy to install: foam aluminum can be installed in high places without mechanical lifting equipment, such as ceilings, walls and roofs, which can be mechanically or directly connected and fixed by screws, or glued to the wall with adhesive. Or on the ceiling. Metal sheet - foam aluminum - the "sandwich" structure formed by sheet metal inherits the excellent properties of aluminum foam and has high flexural strength. It can be used as a high-strength structural part for new building materials and rolling stock.
The structure has a large pore size of 0.3-7 mm; the high and controllable porosity: 63%--90%; the specific surface area is 10-1125px2/cm3; the pore structure is diversified; the closed pore, the through hole and the micropass Porous aluminum foam; metal skeleton composition and pore structure can be controlled to meet different needs.