High-flame-retardant copper-clad plate and preparation method thereof

The invention relates to the technical field of copper-clad plates, in particular to a high-flame-retardant copper-clad plate and a preparation method thereof. Comprising a core material, surface material prepregs are fixedly installed on the two sides of the core material, copper foils are fixedly attached to the outer sides of the core material and the surface material prepregs, and the core material is formed by stacking a plurality of core material prepregs; by using the prepared resin glue solution, a phosphorus-nitrogen-bromine element flame-retardant system is formed, hydrogen bromide gas generated by decomposition of bromide is non-combustible gas, can form a layer of gas film, covers the solid-phase surface of a high-molecular material and can isolate air and heat, hydrogen bromide can also inhibit chain reaction of combustion of the high-molecular material, and the flame-retardant performance of the high-molecular material is improved. The flame-retardant epoxy resin composite base copper-clad plate