Processing and properties of a lightweight fire resistant core material for Sandwich structures

摘要: A process for syntactic foam made from fly ash, a waste product of coal combustion thermal power plants, has been developed using phenolic resin binders at low levels. The ash consists hollow glass or ceramic microspheres and needs to be treated remove contaminants. production is easily scalable can tailored produce foams desired properties specific applications. Complex shaped parts also are possible with appropriate compression mold tooling. Mechanical properties, compression, tension, shear fracture toughness, have determined in this preliminary investigation on material found comparable better than commercially available core materials. Initial testing fire resistance indicated very encouraging results. Further work being continued develop superior mechanical properties.