Hydrophobic phenolic/silica aerogel composites with high fire safety and strength for efficient thermal insulation

, and a high strength (1.67 MPa of compression strength, 2.54 MPa of tensile strength, and 1.65 MPa of flexural strength). GP/RA21-10 exhibits significantly superior thermal insulation properties compared to commercially available insulation materials, including thermosetting polystyrene board, silica aerogel coating board, and rock wool. GP/RA21-10 is flame-retardant and high-temperature resistant and demonstrates superior fire safety during building insulation. The design presented here offers important guidelines for the advancement of high-performance building insulation materials.