Is the aluminum powder elemental aluminum or alumina powder?
Metal aluminum powder is elemental aluminum, but the surface will inevitably be oxidized. Aluminum is highly active, and its anti-corrosion is also based on aluminum oxide film, but it is undeniable that a small amount of aluminum on the surface will be oxidized to aluminum oxide.
Metal aluminum powder is a silver metallic pigment, which is made by adding a small amount of lubricant to pure aluminum foil, crushing it into a scaly powder, and then polishing it. The aluminum powder is light in weight, has high floating power, strong hiding power, and has good reflectivity to light and heat. After treatment, it can also become non-floating aluminum powder. Physical and chemical properties and uses Odorless. Silver-white metal powder, spontaneous combustion temperature: 5900℃, lower limit of dust explosion: 40g/m3. Used to make: paints, inks, pigments and fireworks. It can also be used as an additive to porous concrete. Aluminum can also be used as therapeutic and medical supplies, and it is also used in the automotive and aircraft industries.
The production process of alumina powder is getting higher and higher, and it has been possible to produce alumina powder below 1 micron. Nano alumina transparent liquid XZ-LY101 is colorless and transparent. The transparent nano-alumina dispersion liquid uses 5-10 nanometers of alumina, which is the alumina that has been screened out through layers of deep processing of nano-alumina, and is added to various acrylic resins, polyurethane resins, and epoxy resins. In the water-based liquid of melamine resin, silicone acrylic emulsion and other resins, the addition amount is 5% to 10%, which can increase the hardness of the resin, the hardness can reach 6-8H, and it is completely transparent. The nano alumina liquid can be water-based or oily Any solvent can be used for all kinds of glass coating materials, gems, precision instrument materials, etc.
From the above analysis, it can be seen that aluminum powder and alumina powder are two different products.