The invention relates to a high-molecular
composite material having performances of
high heat conduction and high
flame retardation, the invention is characterized in that the
composite material does not contain any
halogen or a non environmentally-friendly heavy
metal fire retardant, the
flame resistance is capable of reaching a UL94 V0 standard, simultaneously, the
composite material has good
heat conducting performance, the heat conduction coefficient is more than 0.5 W / m. DEG C. The composite material provided in the invention has good
injection moulding performance, extruding performance and
hot pressing performance. The composite material comprises the following basic components: 1) one or a plurality of
metal hydroxides, such as aluminum
hydroxide,
magnesium hydroxide,
zinc hydroxide and the like, wherein the weight content is 10-70%, 2) about 0.2%-60% of the weight content of expandable
graphite flaky
powder, the lamina size is more than 10 um, and the expandable coefficient is more than or equal to 20 times; 3) 15%-70% of the weight content of matrix resins, such as
epoxy resin, organic
silicone resin, phenolic resin, thermosetting
polyester resin and
thermoplastic resins of nylon 6, nylon 66, PBT, PP, HDP and the like. The composite material component of the invention can be directly used for radiators such as LED, electric appliances and electronic components, the heat can be radiated into colder environment so that the
operating temperature of the electronic device can be reduced.