| abstract |
The invention provides a flame-retardant laminated board which comprises a reinforcing material and a flame-retardant material bonded to the reinforcing material. The flame-retardant material comprises, by weight, 30-60 parts of epoxy resin dominated by novolac epoxy resin, 10-30 parts of nitrogen lignin, 20-40 parts of epoxy resin hardener, 10-25 parts of flame retardant, and 0.01-0.1 parts of epoxy resin catalyst. |