The invention relates to a DOPO derivative/carbon nanotube synergistic flame-retardant glass fiber reinforced semi-aromatic high-temperature nylon material and its preparation method. The synergistic flame-retardant composite material includes the following raw materials in parts by mass: 86–96 parts of semi-aromatic nylon resin, 3.5–13 parts of bridged DOPO derivatives, and 0.5–2 parts of modified carbon nanotubes. The preparation steps include raw material drying, uniform mixing of dried raw materials, and melt extrusion of the mixture. By compounding DOPO derivatives with carbon nanotubes, the required filling dosage is low. The prepared material achieves excellent flame retardancy, outstanding mechanical properties and good processability. It solves the problems of large single addition of DOPO derivatives and obvious deterioration of matrix mechanical properties, and can be widely used in household appliances, electronics and surface mounting technology industries. The preparation method is simple, easy to operate, low in dosage and excellent in application effect.
Country Code: CN
Application Number: CN202010035228.X
