High-Temperature Powder Coating for Magnesium Hydroxide

The largest industrial application of Mg(OH)2 is flame retardants for articles such as roofing, isolation materials, plastic articles and coatings. The mechanism of flame retardancy is based on the endothermic decomposition of the material into MgO and H2O. This reaction adsorbs heat, which delays ignition of the associated substance. The water that is released dilutes combustible gases and inhibits oxygen from aiding the combustion. Other known applications of Mg(OH)2 include food additives, where the material is used as acidity regulator, and as precursor for other magnesium materials, most notably MgO.Magnesium hydroxide is plastic, rubber products excellent flame retardant. Widely used in PP, PE, EVA, PVC, ABS, HIPS, PA, epoxy resin, rubber, paint and so on. Due to its high thermal decomposition temperature (310 ° C), Mg (OH) 2 is more suitable for engineering plastics such as nylon 6 (PA6, PA66) with higher processing temperature. In general, aluminum hydroxide ATH has a significant increase in the oxygen index in the flame retardant index, while the magnesium hydroxide MH is more effective in smoking, so in actual use, they are compounded in order to achieve Flame retardant and smoke better effect.Mg(OH)2%≥99%Whiteness%≥97%Lossignition%≥30.5%Water≤0.5Fe≤0.5Cloride≤0.02Size(μm)1μmSpecificsurfacearea7m2/g