New Environmental Protection Material Closed- Cell Aluminum Foam Sound Absorption And Insulation Filter Element 

Close foam aluminum
1.Speaker characteristics: sound absorption performance: perforation treatment of closed foam aluminum plates can be made into high sound absorption sound absorption boards. When the opening rate is 1%to 3%, the sound absorption rate measured by the resident wave method is used in the range of 1000Hz to 2000Hz, and the sound absorption rate reaches 40%to 80%. Foam aluminum sound insulation effect: foam aluminum sandwich board make soundproof board, 20mm thick, sound insulation: 20-40dB.
2.Several resistance: Cortency resistance: It is exposed for one year in the atmospheric environment of the ocean, without obvious abnormalities; under the conditions of accelerated corrosion, there is no abnormality for 2 years in water spray salt fog test;
Not moisture absorption: The moisture absorption rate of foam aluminum is 0.0%. There is no hygroscopic phenomenon, and no acoustic performance will be reduced due to humidity.
The heat resistance/non -combustible characteristics: The foam aluminum is softened at 600 ° C at high temperature, which is a non -combustible material.
Thermal insulation performance: The heat conduction coefficient of foam aluminum is 0.25 ~ 0.62W/m.k, which is equivalent to marble and has good thermal insulation.
Thermal stability: The line expansion coefficient of foam aluminum is 1.934*10 ° C, which is equivalent to concrete, and it is not easy to deform as heating.
3.Mechanical performance:
Mechanical performance: pressure resistance: 3 ～ 17MPa; bending strength: 3 ～ 15MPa; tensile strength: 2 to 7 mPa; buffer performance: absorbing energy can reach 8J/cm³ ～ 30J/cm³ Energy is an excellent impact energy absorption material.
Linking performance: After testing by the Institute of Solid Physics of the Chinese Academy of Sciences, the Q-1 in the foam aluminum internal consumption factor reached 6 × 10-3.
4.Performance:Aluminum foam is used in various fields. Based on a multi -pore light and light silver -white metal material, it has excellent characteristics that are convenient for processing. Materials and various different types.
5. Green and environmental protection: Sex: Foam aluminum is a composite material composed of metal and stomach. It itself will not renew toxic gases at high temperatures.
Recycled: The main chemical composition of foam aluminum is aluminum alloy and its oxide, which can be recycled and does not cause any pollution to the environment.
6. Electromagnetic shielding: Electromagnetic shielding (less than 200MHz) shielding electromagnetic screen 90DB, with excellent electromagnetic shielding performance.
7. The product application field has a variety of special performance because foam aluminum products have a variety of special properties. They can be applied to space, aviation, high -speed trains, urban rail trains, ship manufacturing, high -speed rail, construction, tunnel and sound barriers along the way. Sound, high shock absorption, high absorption of impact energy, high electromagnetic shielding performance, insulation and refractory resistance. Very environmentally friendly

Different density of aluminum foam use

NO	density（g/cm3）	Size(mm)	The main purpose
1	0.25～0.4	2400×800×h customized	Sound absorption materials, marble composite boards, internal and external decorative composite boards, thermal insulation wall materials
2	0.4～0.6		Impact materials, composite boards, sound insulation materials, marble composite boards, internal and external decorative composite boards
3	Above 0.6		Impact material