Why is foam aluminum developing so fast?

2023-07-21

Foam aluminum is made by foaming process after adding additives to pure aluminum or aluminum alloy. It has both metal and bubble characteristics. It has low density, high impact absorption capacity, high temperature resistance, strong fire resistance, corrosion resistance, sound insulation and noise reduction, low thermal conductivity, high electromagnetic shielding, strong weather resistance, filtering ability, easy processing, easy installation, high forming accuracy, and can be used for surface coating.

Foam aluminum has excellent physical, chemical and mechanical properties as well as recyclability. These excellent properties of foam aluminum make it have broad application prospects in today's material field, and it is a promising engineering material, especially in transportation industry, aerospace industry, building structure industry, etc

Why is foam aluminum developing so fast? Because foam aluminum has many advantages, for example, its density is 0.1-0.4 times that of metal aluminum; Its bending stiffness is 1.5 times that of steel; The damping performance is 5-10 times that of metallic aluminum. The foam aluminum with porosity of 84% can absorb more than 2.5MJ/m3 of energy when 50% deformation occurs. The sound insulation coefficient of closed cell foam aluminum is more than 0.9 when the sound frequency is between 800 and 4000 HZ. When the electromagnetic wave frequency is between 2.6-18GHz, the electromagnetic shielding capacity of foam aluminum can reach 60-90dB.

Structure: foam aluminum is convenient for cutting, drilling and cementing; Can be bent into the desired shape after molding; Can use organic or inorganic paint for surface treatment; It can be skinned on both sides to form a large-sized lightweight and high stiffness board. Foam aluminum materials can be installed at heights without mechanical lifting equipment, such as ceiling, wall and roof. They can be connected and fixed mechanically or directly with screws, or pasted on walls or ceilings with adhesives. The "sandwich" structure formed by metal sheet - foam aluminum - metal sheet inherits the excellent performance of foam aluminum, and has high Flexural strength, which can be used as new building materials, high rigidity structural parts of locomotives and vehicles, etc.