The effects of red phosphorus flame-retardant masterbatch on the flame-retardant properties of glass fiber reinforced PA66 were investigated. The results showed that the flame-retardance of the composite ranked a level of FV-0 when the addition of red phosphorus flame-retardant masterbatch reached 14 portions. The composite obtained a good combined properties adding 12 portions of red phosphorucs flame-retardant masterbatch, 9 portions of compatibilizer, and little Mg(OH)_2, and Al(OH)_3. The crust and mot...