Aluminum hydroxide is one of the most important inorganic flame retardant fillers, because aluminum hydroxide has the advantages of smoke suppression, low corrosion and low price, in terms of consumption, aluminum hydroxide occupies the first place in all flame retardants.
Alumina hydroxide is made of bauxite and its production process is Bayer method.As fire retardant at home and abroad market mainly by ultra-fine aluminum hydroxide, the aluminum hydroxide is crystalline or amorphous white powder, crystal structure is composed of tightly packed hydroxyl ions, in the form of a double layer and aluminum ion is situated in the hydroxyl ion accumulation, in the formation of octahedral gap, nearly two-thirds of the space occupied by a aluminum ion, the close packing of hydroxyl ions form a layered structure, between adjacent two layers connected with hydroxyl ions formed by hydrogen bonds.
The aluminum hydroxide flame retardant filler is mainly applied to the free chlorine cable materials, composite insulator, copper clad and other industries, especially copper clad industry now is still in the golden period of development, and foreign electronics industry to our country’s strategic shift and domestic communications and the rapid development of electronic industry, makes the demand of domestic copper clad laminates have been in a state of growth.
