Phenolic foam insulation material improved by glass fiber powder and sericite

The invention relates to a phenolic foam insulation material improved by glass fiber powder and sericite. The insulation material is characterized by being mainly prepared from the following raw materials: 100 parts of phenolic resin, 2-10 parts of a phenolic resin fluidity improver, 0.5-5 parts of foam stabilizer, 1-10 parts of toughening/reinforcing agents, 6-15 parts of a foaming agent and 6-55 parts of a reactive acid curing agent. The insulation material disclosed by the invention, which adopts polyoxyethylene grafted or blocked water-based methyl silicone oil as the foam stabilizer, is delicate and uniform in foam cells, low in heat conductivity coefficient and good in insulation performance; and the insulation material, by taking the glass fiber powder and the sericite as the toughening/reinforcing agents, can be used for reducing the cost, improving the flame retardation of foam and reducing the smoke density.