1. Description

Magnesium hydroxide in the chemical formula for Mg (OH) 2, Mohs hardness is 2.5, it starts to decompose at 330 ℃ to produce magnesium oxide and water, it decomposes fastest at 430 ℃, the decomposition is over at 490 ℃. It is Soluble in acid and ammonium salt solution and insoluble in water and ethanol. Magnesium hydroxide is a new kind of Filling type flame retardant, It decompose to release hydration by heat to absorb a amount of latent heat, in order to reduce the surface temperature of filled synthetic materials in flame, It can inhibit polymer decomposition and cool the generated combustible gas. Decomposed magnesium oxide is good refractory material to help to improve the fire resistance performance of composite material, the released of water vapor is smoke suppression agent at the same time, It has the character of no corrosive halogen gas and harmful gas, non-volatile, longer-lasting, non-toxic, smoke-free, no drip etc., it is recognized as excellent flame retardant of the function of flame retardant, smoke suppression and filling in the tripple in the rubber industry.

2. Variety comparison

Magnesium hydroxide has the following advantages over aluminum hydroxide:

1. The thermal decomposition temperature of Magnesium hydroxide is 330 ℃,which is 100 ℃ higher than Aluminum hydroxide, so it improves the plastic processing temperature, speed extrusion,shorten the molding time, and high surface gloss of products without surface defects, and ensure super peeling strength at the same time.

2. Generated dehydrated magnesium oxide from burning magnesium hydroxide is a kind of high strength, high heat resistant material, which is used as a protective wall to exclude fire and poisonous and harmful gas, neutralization capability of magnesium hydroxide to acid is strong, to neutralize acidic gas SO2, CO2, etc quickly from plastic combustion process.

3. The decomposition of magnesium hydroxide to absorb large heat, which is useful for the absorption of combustion heat and the improvement of flame retardant efficiency;

4. Magnesium hydroxide has high decomposition ability, high flame retardant efficiency, strong smoke suppression ability, small hardness and low friction to equipment to extending the life of production equipment.

3. Technical Indexes

4. Product features

Our Magnesium hydroxide is made of selected natural raw materials by advanced production process.The product has high purity, uniform particle size distribution, good compatibility with the base material and a little influence to the mechanical properties of the product.

Magnesium hydroxide or active magnesium hydroxide are widely used as the fine flame retardant polymer materials and filler for PE, PP, PVC, ABS, PS, HIPS, PA, PBT, unsaturated polyester, epoxy resin, rubber and so on. The separate dosage is generally between 40% and 60%.