Aluminum foam is suitable for high-speed rail, subway, concert hall, cinema, recording studio, studio, song and dance hall, gymnasium, subway station, waiting hall, waiting room, hotel lobby, large shopping malls, exhibition hall, office hall, news room, computer room
Such as decoration materials, sound barrier sound absorption materials, high fire grade materials; Environmental protection new materials
First, the main characteristics of aluminum foam sound absorption board:

1, the new foam aluminum plate, sound absorption performance is good, stable acoustic performance, no pollution, light weight, beautiful, fire prevention, not afraid of water, good physical properties, easy processing, with it made of various forms of sound absorption body, muffler, sound insulation structure, sound barrier,
Silencer room, sound insulation cover, etc., can directly face the noise source, do not need any protective panel and other sound absorbing filler.
2, with good acoustic performance: average sound absorption coefficient ≥0.60 (125-4000Hz frequency range, Measured by tongji University Acoustics); At the same time, it has good acoustic performance that the sound absorption performance does not change after spraying water and ash.
3. The foam aluminum plate is made of aluminum alloy, which can be recycled after being damaged. It is a new green environmental protection product that does not cause secondary pollution to the environment at present.
4. Aluminum foam plate is the forefront and replacement product of non-fibrous materials at present. It will not become dust after aging and cause secondary pollution to the atmospheric environment like glass fiber, mineral wool, rock wool and other environments caused by sun and rain and high temperature.
5, with metal aluminum corresponding fire incombustible, weather resistance, corrosion resistance, wind, rain, sun, is A class A non-combustible products.
6, can be coated with different colors of coating, beautiful, coating after several dilute spray, drying and other processes, so even in the wind and sun conditions, will not fade.
7, with good electromagnetic shielding performance.
8, foam aluminum sound absorption plate can be sawed, can be arbitrary bonding, riveting, plug, easy installation.
9, foam aluminum plate can be made into various forms of sound absorption body, but also can be combined into various forms of sound absorption, sound insulation body.
10, the surface is easy to clean, convenient maintenance.



Two, the scope of application of aluminum foam sound absorption board
Used in concert hall, cinema, recording studio, studio, dance hall, gymnasium, subway station, waiting hall, waiting room, hotel lobby, large shopping mall, exhibition hall, office hall, news room, computer room and other places to control the sound

Effect of reverberation time.
For pipe muffler, muffler elbow, static pressure box, especially suitable for clean workshop, food production workshop, pharmaceutical factory, precision instrument manufacturing workshop, laboratory, ward, operating room, dining room, ship engine room, auxiliary engine room, cabin and other places



The air conditioning and ventilation equipment play a noise-reducing role.

In urban light rail, elevated road, traffic trunk road, highway, railway, overpass, cooling tower, open-air high-voltage substation, concrete mixing field and other places play the role of sound absorption barrier.

In diesel engine, generator, motor, internal combustion engine, freezer, air compressor, aircraft, train, automobile, ship, boiler, forging hammer equipment, fan and other equipment, can be sound absorption, sound insulation, muffler effect.

3. Performance test results of aluminum foam sound absorbing board
Pore characteristics and volume density
Main aperture: 0.9mm, 1.6mm, 2.5mm three specifications, common specification is 1.6mm aperture.
Porosity: 60-80% (68-78% at 1.6mm aperture)
Through-hole rate: 85-95% (90-95% for 1.6mm aperture)
Volume density: 0.5-1.10g/cm3 (0.60-0.85g/cm3 for 1.6mm aperture)
Flammability: determined according to GB/T5464
The combustion performance of the sound-absorbing board conforms to the provisions of GB8624 non-combustible material (CLASS A) : it belongs to non-combustible material.
Hygroscopic performance: determined according to GB5480.7 (
Mass hygroscopicity W1 < 0.1%
Volume hygroscopicity W2 < 0.1%
Mechanical properties: refer to GB/T1039-1040 determination
Compressive strength δ C: 8.61Mpa (at 10% compression)
Bending strength δ W: 8.06mpa
Tensile strength δ B: 3.41Mpa
Aging resistance: determined according to GB/T14522 (Shanghai Institute of Construction Science inspection Station)
After 250 hours of testing, there is no discoloration, no shedding and no aging phenomenon
Electromagnetic shielding: according to GB/12190 and SJ20524 determination
Shielding efficiency 40-55dB (80khz-1.5ghz frequency range measurement)
Sound absorption performance: according to GBJ47 and GBJ88 measurement
Average sound absorption coefficient (measured in frequency range 125-4000Hz)
Noise reduction coefficient NRC 0.64 (250-2000Hz frequency range determination)
Sound insulation performance: measured according to GBJ75
Air acoustic meter weight sound insulation Rw 28.0dB (sound insulation index LA)
Average sound insulation Ra 24.5dB (125-4000Hz frequency range measurement)
 

Other metal foam

		Diam	thickness	length	width	purity	Details
	Foil		0.03mm -0.8mm	>3000mm	2mm-150mm	99.99%	Details
	sheet		0.03mm-50mm	100mm	100mm	99.99%	Details
	wire	0.025mm -0.05mm		7000-8000m		99.99%	Details
	Stab	2.0mm -150mm		<1000mm		99.99%	Details
	granules		6mm-13mm			99.99%	Details