Toughened heat-conducting insulating PA6 composite material as well as preparation method and application thereof

The invention relates to a toughened heat-conducting insulating PA6 composite material as well as a preparation method and application thereof, and belongs to the technical field of modified engineering plastics. According to the invention, PA6 and PA610 are taken as base materials, chemically modified aluminum oxide, hexagonal boron nitride and boron nitride nanotubes are prepared into heat-conducting master batches, a flexibilizer, an antioxidant and a lubricant are supplemented, and the insulating PA6 composite material with good toughness and high heat conductivity coefficient is obtained by blending and extruding through a twin-screw extruder. The heat conductivity coefficient of the material can be up to 1.56 W/(m.K) under the filling amount of 20% wt, the material keeps good insulativity, the volume resistivity of the material reaches 5.5 * 10 < 15 > omega.cm, the toughness of the material is good, the unnotched impact strength of a simply supported beam of the material can be up to 74 kJ/m < 2 >, and