Nano modified phenolic aldehyde foam insulation board and preparation method thereof

The invention relates to a nano modified phenolic aldehyde foam insulation board and a preparation method thereof. The nano modified phenolic aldehyde foam insulation board comprises the following raw materials: 50-65 parts of phenolic resin, 20-25 parts of reactivity polyamide resin, 2-8 parts of fumed silica, 5-15 parts of liquid acrylonitrile-butadiene rubber, 4-8.5 parts of a modified surface-active agent, 9-18 parts of a toughness modifying agent, 4-10 parts of a foaming agent, 6-8 parts of a solidifying agent, and 1-5.5 parts of a catalyst promoter. The preparation method for the nano modified phenolic aldehyde foam insulation board comprises the following steps: firstly, raw materials are prepared; the raw materials are uniformly stirred; meanwhile, the solidifying agents and the catalyst promoters are added, so that the raw materials can be uniformly mixed; foaming mixture is placed on a sheet continuous production line and the temperature is kept to be 40-50 DEC G; after the foaming mixture is mixed, the foaming mixture is cross linked, expands foams and is solidified; the thermosetting phenolic resin rigid foam board is formed. According to the invention, properties of the phenolic aldehyde foam insulation boards prepared according to the technical scheme provided by the invention are improved, particularly the fire-resistant property is improved.