In this paper microencapsulation of magnesium hydroxide, red phosphorus, inorganic phosphorus and
organic flame retardants have been reviewed. The effects of different shell materials on the properties of
microencapsulated flame retardant and composites have been carefully and thoroughly discussed. It has
been demonstrated that microencapsulation provide better water resistance, flame retardancy,
compatibility and higher pyrolysis temperature, etc. With proper shell material, the microcapsules not
only possess better properties, but also can be used in more rigorous situation.