Magnesium hydroxide

Retardant mechanism
Magnesium when heated (340-490 degrees) decomposes to absorb the combustion flame retardant surface heat; while releasing large amounts of water dilute combustible surface oxygen, decomposition of the active magnesium oxide attached to combustible surfaces to prevent further the burning proceed.

Magnesium hydroxide flame retardant in the whole process not only does not produce any harmful substances, and its decomposition products in a fire, while also able to absorb a lot of rubber, plastics and other polymer produced by combustion of harmful gases and smoke, constantly absorbing active magnesium oxide unburned

Melting residues from the combustion stop soon while eliminating smoke, preventing droplet, is an emerging environmentally friendly inorganic flame retardants.
Classification
Flame retardants can be classified according to the chemical composition of organic and inorganic flame retardants two categories. Organic phosphorus flame retardants are divided into two series, and halogen. Since the existence of organic flame retardants toxic decomposition products, smoke and other shortcomings, are gradually being replaced by inorganic flame retardants. No

Machine main varieties retardant aluminum hydroxide, magnesium hydroxide, red phosphorus, antimony oxide, tin oxide, molybdenum oxide, ammonium molybdate, zinc borate, in which aluminum hydroxide and magnesium hydroxide decomposition endotherm due to large and produce H2O can play the role of the absence of air, its oxidative decomposition

Material is high temperature material, so two kinds of flame retardants can not only play a role, but also can play a role in filling, it has no corrosive halogen gas and harmful gases, non-volatile, long lasting, non-toxic, smoke, do not drop characteristics.
Varieties
At present, large amount of aluminum hydroxide, but with the polymer processing temperature, the decomposition of aluminum hydroxide, lower flame retardant, aluminum hydroxide, magnesium hydroxide has the following advantages compared to:
1, the thermal decomposition temperature of magnesium hydroxide 340 ℃, aluminum hydroxide higher than 100 ℃, is conducive to plastic processing temperature, the speed of extrusion, increase the plasticizing effect, shorten the molding time, the product surface gloss, no will produce surface defects, while ensuring a

Super peel strength.
2, particle size distribution, good compatibility with the substrate, little effect on the mechanical properties of products.
3, dehydration of magnesium hydroxide generated after combustion of magnesium is a high strength, high heat resistant material, can be used as a protective wall, separated from fire, toxic gases, magnesium hydroxide with an acid neutralizing capacity, and can be quickly and plastics in acid gases generated during combustion

SO2, NOx, CO2, etc.
4, magnesium hydroxide decompose high capacity, high efficiency, flame retardant, smoke suppression ability, low hardness, low friction of the equipment that helps extend equipment life.
5, low prices, aluminum hydroxide, magnesium hydroxide is half the price, filling capacity, can greatly reduce the cost of the product.