FLAME RETARDANT, COMPOUND FLAME RETARDANT, AND FLAME RETARDANT POLYMER MATERIAL COMPRISING COMPOUND FLAME RETARDANT

摘要

Disclosed are a flame retardant, a compound flame retardant, and a flame retardant polymer material comprising the compound flame retardant. The flame retardant is a phosphoric acid-arylphosphonic acid metal salt and/or a phosphorous acid-arylphosphonic acid metal salt, the phosphoric acid-arylphosphonic acid metal salt and the phosphorous acid-arylphosphonic acid metal salt both being in a layered single phase. The flame retardant overcomes the respective disadvantages of a phosphate (phosphite) salt and a phenylphosphonate salt in the prior art, especially the issues of the prior art in which the phosphate (phosphite) salt has poor compatibility with a polymer material and easily separates therefrom, and the phenylphosphonate salt flame retardant has a low flame retardant efficiency. The flame retardant can also increase the flame retardant effect of a dialkylphosphinate salt flame retardant on a polymer material. Further provided are a compound flame retardant comprising the flame retardant, and a flame retardant polymer material comprising the compound flame retardant.