The invention discloses a high-whiteness,
halogen-free,
flame-retardant, thermal conductive and insulated PA 6 (
polyamide 6)-based
composite material and a preparation method thereof. The
raw material formula is composed of the following components according to percentage by
mass: 30-40% of
polyamide 6, 40-55% of thermal conductive fillers, 5-10% of
titanium dioxide, 7-10% of aluminum diethyl
phosphinate, 0.4-1.0% of
coupling agent, 0.4-1.0% of flow modifier and 0.2-0.5% of
antioxidant, wherein the thermal conductive fillers are composed of a filler with a
layered structure and a granular filler, the filler with the
layered structure is
boron nitride, and the length-
width ratio is (10:1) to (15:1); the particle size range of the granular filler is 10-40 microns. The vertical
combustion of a 1.6 mm sample strip of the PA6-based
composite material disclosed by the invention passes UL94V-0 level, the normal
thermal conductivity is higher than 1.1 W / m.K, and the high-whiteness,
halogen-free,
flame-retardant, thermal conductive and insulated PA 6-based
composite material has the advantages of high whiteness, good
flame retardancy, high
thermal conductivity, insulation, good
processing fluidity, and the like.