Brucite is a rare non-metallic mineral. The former Soviet union in the early 1960 s to the development and utilization of brucite, then the United States, Canada, and north Korea also found part of the deposit for the mining. Development is larger in Russia in the south of xiaoxinganling cooley, all brucite deposit, but its development speed is very slow. The United States also has many localities of brucite resources.
Brucite factory introduction at present, the domestic aluminum hydroxide dosage is more, but with the increase of temperature of the polymer processing, aluminum hydroxide is easy to decompose, reducing flame retardant effect
Inorganic flame retardants have good thermal stability, non-volatile, does not produce corrosive and toxic gases, etc, and the price cheap, inorganic flame retardant accounted for more than half of all kinds of flame retardants. Main varieties are: aluminum hydroxide, magnesium hydroxide, antimony oxide, molybdenum oxide, zirconium oxide, ammonium molybdate, zinc borate, etc., including aluminum hydroxide (ATH) account for more than 80% of inorganic flame retardants. But as a result of poor flame retardant effect of inorganic flame retardants, adding quantity is big, must adopt new technology, such as ultra refined, surface modification, such as macromolecular bonding to improve.
In recent years, the domestic study of magnesium hydroxide in full swing, high purity level flame retardant magnesium hydroxide was concerned about all the problems. However, specific what size of magnesium hydroxide flame retardant can do has been applied in polymer, you become one of the research question
The present situation of all kinds of flame retardants introduced to you by magnesite company
Altogether 107 article， Every page shows：5 article