A brief introduction to the performance characteristics of new foam aluminum materials

The new foamed aluminum material, also known as foamed aluminum, is made by adding additives to pure aluminum or aluminum alloy through a foaming process. At the same time, it has the characteristics of metal and bubbles. It is a new type of strategic functional structural material. The new foam aluminum material has the advantages of low density, high shock absorption ability, high temperature and weather resistance, filtering ability, easy processing and installation, and high forming precision. It can also be surface coated.

The performance characteristics of the new foam aluminum material:

1. Ultralight

The density is 0.2~0.4g/cm3, which is about 1/10 of the density of aluminum, 1/20 of the density of titanium, 1/30 of the density of steel, 1/30 of the density of steel, and 1/3 of the density of wood.

2. Sound absorption

The new foamed aluminum material can absorb the energy of sound through the vibration of the pore wall to remove noise. The principle of sound absorption performance is: the sound enters the foamed aluminum and undergoes diffuse reflection, which interferes with each other, so that the sound energy is converted into heat energy, thereby reducing the noise. The new foam aluminum material is a lightweight and high-damping material with high-performance absorption characteristics. Compared with other sound-absorbing materials, the average sound absorption coefficient can reach 0.4~0.52, and the low-frequency absorption performance is excellent.

3. Heat resistance

The new foamed aluminum material has high heat resistance. Generally, the melting temperature of aluminum alloy is about 560-700°C. Single foamed aluminum does not dissolve even if heated to 1400°C, and it does not release harmful gases at high temperatures. The non-combustible, non-toxic, heat-resistant and anti-biological corrosion characteristics of new foam aluminum products determine that it will not be destroyed under the action of combustible oily materials, solutions, ultraviolet rays and radiation.

4. Electromagnetic wave shielding

The framework of the new foamed aluminum material is connected, which has a good shielding of high-frequency electromagnetic waves, has good electromagnetic absorption and reflection capabilities, and can reduce electromagnetic interference by more than 80%. The electromagnetic shielding performance of foamed aluminum (foamed aluminum) can play a very good shielding effect for spaces such as office buildings with many signals. Because the new foamed aluminum material has excellent electromagnetic shielding performance and sound absorption characteristics, it is suitable for use in the ceiling and wall of telecommunications, electronic equipment, computer rooms, and TV broadcast equipment rooms as electromagnetic shielding materials.

5. High damping and shock absorption effect is good

When the new foam aluminum material reaches its yield point under pressure, the strain value exceeds the critical strain, and the bubble diaphragm is deformed, continuously deforming layer by layer, and the bubbles are destroyed, resulting in great compression deformation, large deformation and low flow stress level. Thus, the impact energy is absorbed and a good cushioning effect is shown.

6. Convenient processing

The new foam aluminum material has good ductility and plasticity, and is easy to perform mechanical processing, such as cutting, drilling, bending and embossing. The new foam aluminum material can be cut into different specifications and different sizes with a saw. It can be easily drilled and riveted, and it can also be bent and embossed. It can also be used to bond the new foam aluminum material to each other. Paste.

7. Convenient construction

Because the new foamed aluminum material is light in weight, it can be installed manually without mechanical lifting equipment, and is especially suitable for high places such as ceilings, walls and roofs. Because of the convenient processing, it can be bonded and riveted, and it is very easy to connect with other structures. Therefore, it is convenient for on-site construction and installation combination.

8. Good surface decoration effect

Using a special process, the surface of the new foam aluminum material can be painted with paint. Painting hardly damages the sound-absorbing effect of the new foam aluminum material, and can improve the surface decoration effect. It can be widely used in the architectural decoration of shopping malls, hotels, stadiums and other venues.

9. Can be used as a sandwich

The new foamed aluminum material is bonded with aluminum, copper, titanium and other thin plates on both sides to make a sandwich panel. It is a light and high-strength sheet. It can be used as a structural material with excellent performance. It can be used as a plane, automobile, and train. Floor, ceiling, car door, wheel guard plate material and building curtain wall material and roof material.