With the quick development of society, high polymer material was used in all fields of human daily life. However, the inflammability causes much more problems, especially to the life and property. Plastics are generally protected against flammability by the combined use of halogen hydrocarbons. There are many problems in the use of flame retardant, such as, corrosion of fabrication machines, emission of smoke and generation of toxic fumes during combustion. Therefore, much more attention has been paid to materials, such as, aluminum hydroxide, magnesium hydroxide, etc. for nontoxic and free of the mentioned problems.