Decor and design for Architecture
The excellent acoustic properties of aluminum foam are reflected in damping, sound insulation and sound absorption properties. When the sound wave hits the surface of the foam aluminum, a part of the sound wave is reflected from the surface of the foam aluminum, and the other part of the sound wave enters the interior of the foam aluminum. Because the sound wave is a vibration, it enters the sound wave of the foam aluminum material, and causes the internal skeleton of the aluminum foam to vibrate, causing the air vibration of the pore.
Because of the friction and viscous resistance of air in the aluminum foam material, some of the sound energy can be transformed into heat energy. In addition, the sound wave attenuates many times in the foam aluminum, and further attenuates. When the sound waves entering it reflect again, the energy of the sound wave has been greatly reduced, that is, the loss of aluminum foam is absorbed, leaving only a small part of the energy. The sound insulation coefficient of closed cell aluminum foams (thick 20-30mm) is more than 0.9 (about 10dB) at 800--4000Hz. The sound absorption coefficient of micro hole and through foam aluminum can reach 0.8 (about 7dB) at 2000---4000HZ. Pore size, void fraction, density, specific surface area and other structural parameters have great influence on damping, sound insulation and sound absorption properties of aluminum foam.
As a new building and decoration material, aluminum foam has the advantages of light weight, high rigidity, beautiful appearance and no burning. It also has the characteristics of sound absorption, heat insulation and electromagnetic shielding. It can be used to make indoor and outdoor decoration and ceiling materials. It is both light and beautiful, and can also play the role of fire prevention and sound insulation. Foam aluminum can be used as an interior wall material for advanced office buildings, etc. It adopts steel frame, and foam aluminum sandwich panel is embedded in the frame, and the thickness of aluminum foam sandwich board is 30--50mm. The foam aluminum diaphragm wall occupies less space and has better sound insulation performance (30mm wall can be soundproof 60dByishang, and 50mm wall can be soundproof above 80dB). In swimming pools, stadiums, conference halls, concert halls, entertainment halls, stations, etc., it is necessary to avoid noise resonance and reverberation, using bare surface foam aluminum plates as interior sound absorbing boards. The ceiling panel of subway tunnels and stations can be made with foam aluminum bare board to prevent noise from polluting the environment. In addition, the foam aluminum material does not absorb water, and the sound absorption effect is not decreased under moist environment. The use of aluminum foam can solve the problem of absorbing noise, absorbing water and absorbing sound.
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Architecture Application |
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High building aluminum panels / foam aluminum / aluminum panels for building curtain walls
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The curtain wall panels for high rise buildings are made. The thickness of the foam aluminum plate is 10mm, and the thickness of the 0.5mm thick fluorocarbon aluminum sheet is 0.5mm. Energy absorption, sound insulation, heat insulation and other excellent performance, thermal expansion coefficient inside and outside the same, to ensure smooth, non-combustion, fire protection performance is good.
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Foam aluminum curtain wall panels
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3mm thick marble /15mm thick foam aluminum composite, weight less than solid Dali slate 2/3, impact toughness increased by more than 2 times.
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Interior Decoration of Entertainment Places
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The foam aluminum acoustic board is used to make the Acoustical Decoration on the ceiling and walls of the cabaret, nightclubs and other entertainment places. The noise reduction effect is good, it does not burn and the fire resistance is good.
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Structural requirements for passenger, mixed and luxury ships
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Using foam aluminum sandwich panels to make passenger ships and mixed loading vessels, yachts cabin, spacers, hatches, floors and other floors, the density is 1/20 steel, light weight and energy saving, the floor thickness is 1mm thick aluminum plate, /20mm foam aluminum plate, /1mm thick aluminum plate structure, the strength is 7 times of the steel plate, and the weight is reduced by more than 50%; the partition wall and hatch door can be made of 0.5mm thick aluminum plate, /10mm thick foam aluminum plate, /0.5mm thick aluminum plate sandwich board. As a result, the strength of the steel plate is more than 3 times, sound insulation, good comfort, non-combustion, corrosion resistance.
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