Brief introduction of foam aluminum

As a "probably more important metal" in twenty-first Century, metal aluminum has already been widely used, and after many years of development, aluminum has been able to be presented in many ways to meet the needs of people at various levels and in many fields. Aluminum foam is the leader in metal aluminum derivatives.

Aluminum foam is a lightweight porous metal material with numerous bubbles on the basis of aluminum. It also features metallic phase bubbles and is a very promising physical functional material. The manufacturing method is mainly made by adding additives into pure aluminum or aluminum alloy and by foaming process. Because metal has higher stiffness than plastic, theoretically, aluminum foam of the same thickness can absorb more energy than foam made of PVC.

Up to now, the world has produced many kinds of foam aluminum and foam aluminum parts, and has been widely used in the industrial field. The future will have broad prospects in the fields of construction, chemical industry, transportation, aerospace and so on.

Of course, as a hot new material, foam aluminum is bound to have its own "expertise".

1.  light weight and high stiffness. The density of aluminum foam is about 0.1-0.4 times that of metallic aluminum, but its bending resistance can reach 1.5 times that of steel.
2. the resistance to shock and shock absorption is super. The damping capacity of aluminum foam can reach 5-10 times that of metal aluminum. When the foam aluminum with a porosity of 84% has a 50% ratio deformation, it can absorb more than 2.5MJ/M3C energy, and the energy absorption effect is far more than other damping materials.
3. good acoustic performance. In closed cell state, when the sound frequency is between 800-4000 Hz, the sound insulation coefficient of aluminum foam can reach more than 0.9. The sound absorption coefficient of aluminum foam can reach 0.8 when the acoustic frequency is between 125-4000 Hz.
4. good thermal performance. The thermal conductivity of closed cell aluminum foam with porosity of 80%-90% is 0.3-1W/ (MK), which is equivalent to marble. Under the condition of forced convection, the heat conduction effect is excellent.
5. it preserves aluminum corrosion resistance, low moisture absorption, no aging and non-toxic.
6. the processing and installation are very convenient. Aluminum foam can be cut, bored and cemented, and can be made into various shapes through grinding tools, and can be treated like ordinary aluminum, and can also form a large, lightweight, high stiffness plate. As the "body" is light, the foam aluminum material can be easily installed at high places without any mechanical lifting equipment. It also allows direct use of adhesives to paste on ceilings and walls.