An intumescent flame-retardant coating was prepared with binder,solvent and flame retardant system composed of ammonium polyphosphate(APP),melamine(MEL) and pentaerythritol(PER).The modifiers expandable graphite(EG) and sericite were used to improve the performances of the APP-PER-MEL coating.The effects of the compose of the binder;the ratio of the flame retardant system;the ratio of EG and sericite on the fire-retardant property and char formation of the coating were investigated by using self-made high t...