Aluminum powder is an important and widely used industrial raw material in modern industry. In 2014, China's raw material aluminum powder demand was about 160,000 tons, and its application fields covered refractories, pigment coatings, ceramic alloys, chemical metallurgy, and military industries. The raw material aluminum powder has different appearances under the electron microscope, which are mainly water droplets and irregular shapes. The purity of aluminum is generally between 98-99.9%, and the activity is between 96-99%. The purity of aluminum and active aluminum Content is the two most important indicators to measure the quality of raw aluminum powder.
Among all raw material aluminum powder applications, the production of coating aluminum powder (ie pigment aluminum powder) and aluminum powder paste (ie aluminum silver paste) is one of its main application fields. In 2014, China's raw material aluminum powder used to produce aluminum pigment was about 27,000. Ton. Coating aluminum powder refers to aluminum powder that has been processed into particles in the form of flakes and whose surface is coated to be suitable for pigments. The coating aluminum powder has a sheet-like appearance, has good physical shielding properties, silver-white metallic luster, and an optical effect of different colors. The pigment aluminum powder coated with advanced fatty acids also has floating performance in the paint film. Aluminum silver paste is a mixture of coating aluminum powder and solvent. Its use characteristics are roughly the same as coating aluminum powder, but due to the historical use of the process, the use of aluminum silver paste is more common, the production and sales are greater, and the production of coating aluminum powder Advanced technology, fine processing, good effect!
Therefore, the raw material aluminum powder is the main raw material for the production of aluminum pigments, and does not have the physical shielding properties (hiding power) and metallic optical effects (metal gloss) required by aluminum pigments. Coating aluminum powder and aluminum silver paste are two different forms of aluminum pigment. Coating aluminum powder is mainly used to produce powder coatings, while aluminum powder slurry is mainly used to produce solvent-based or water-based coatings.