[China Aluminum Industry Network] The main characteristics of foam aluminum foam is a collection of bubbles and aluminum diaphragm, the irregularity and three-dimensional nature of the bubble makes it have many excellent characteristics.
1 Density of lightweight aluminum foam is approximately 1/5 to 1/10 of pure aluminum, 1/20 of that of iron, and 1/4 that of wood and plastic.
2 Sound Absorption Performance The sound absorption characteristics of aluminum foam are: After the sound enters the aluminum foam, diffuse reflection occurs, which interferes with each other, so that the sound energy is converted into heat energy, thereby weakening the noise. Compared with other sound-absorbing materials, foamed aluminum has excellent low-frequency absorption properties. Foam aluminum is added with a cavity of a certain size, and the sound absorption effect is better, and can be applied in a wider frequency range. For example, the wall surface before the sound-absorbing treatment is a very hard cement, and the foam aluminum sound-absorbing noise can be reduced by 17 db after the indoor sound-absorbing and noise-reducing treatment is performed on the aluminum foam with a thickness of 10 mm.
3 Acoustic properties of aluminum foam Aluminum foam can be compounded with other sound insulation materials. Due to the sound absorption of aluminum foam, the sound insulation effect can be further improved.
4 Fire-Resistance of Foam Aluminum Foam has good fire-resistance. The melting point of aluminum is 660°C, and the foamed aluminum reaches 800°C before it begins to soften (because it cannot bear its own weight), but it has not melted yet. Aluminum foam will not be deformed even when exposed to high temperatures of 780°C without external force, which means that aluminum foam can withstand higher temperatures than normal sound absorbing materials. In addition, aluminum foam is an incombustible material that does not produce harmful gases like plastics and other materials.
5 Electromagnetic Shielding Performance of Foamed Aluminum Foam has excellent electromagnetic shielding performance and also has sound-absorbing properties. Therefore, the foamed aluminum plate is more suitable for use in the production of ceilings and walls of electrical equipment rooms and is used as an electromagnetic shielding material.
6 The buffer effect is good When the aluminum foam is compressed to reach its yield point, the bubble diaphragm deforms, continuously deforms layer by layer, and the air bubble breaks, resulting in a great compression deformation, thereby absorbing the impact energy and showing a good buffering effect.
G foam aluminum Low thermal conductivity The thermal conductivity of aluminum foam is very low, only 1/60 to 1/500 of pure aluminum, and the coefficient of linear expansion is comparable to that of pure aluminum.
H Foam Aluminium Processing Convenient Foam aluminum is easy to machine, such as cutting, drilling, bending, and embossing. Saw can be used to cut foam aluminum into aluminum foams of different sizes and sizes. It is easy to drill and rivet aluminum foam. It can also bend and emboss aluminum foam. It can also use adhesive to make foam aluminum. Stick to each other to bond aluminum foam.
7 Convenient construction Because aluminum foam is light, it can be installed manually, especially suitable for work at ceilings, walls, and roofs. Due to the ease of processing, it can be bonded and riveted, making it easy to connect with other structures. Therefore, it is convenient for on-site construction and installation.
8 The surface decoration effect is good The special process can be used to completely coat the aluminum foam surface with paint. Coating hardly damages the sound absorption effect of aluminum foam.
9 can be made of sandwich using aluminum foam on both sides of aluminum, copper, titanium and other thin plates, made of sandwich panels, is a lightweight and high strength sheet, can be used as a structural material with excellent performance.
Zinc Sulfate food grade is different from technical grade, it is produced by Zinc oxide and sulfuric acid, both food grade. It can be used in nutritional supplement medicines or fortifiers.
Zinc Sulfate
Zinc Sulfate Monohydrate, Zinc Sulfate Heptahydrate, Zinc Sulfate Food Additive, Zinc Sulfate Feed Grade
Jiangsu Kolod Food Ingredients Co., Ltd. , https://www.kolodchem.com