▎ 摘　　要

NOVELTY - Composite material has a brick-mud structure, and polymer-modified inorganic nanosheets are assembled layer by layer. The functional groups of the polymer molecular chain and the metal ions form non-covalent bonds, and constructs a shell-like brick-mud structural composite. The inorganic nanosheets in the composite material act as a matrix ''brick'', and the polymer on the surface of the inorganic nanosheets acts as a ''mud''. USE - Composite material for aerospace, electronics, military, civil engineering and machinery (claimed). ADVANTAGE - The composite material has shells that are mainly formed by organic/inorganic micro-nano hierarchical layer-by-layer assembly and synergistic interfacial interactions, showing excellent toughness and mechanical strength, and cross-linkable non-covalent molecular chains were introduced on the surface of inorganic nanosheets to form strong and weak multi-interface structures with different cross-linking densities by regulating the distribution of functional groups. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of a composite material, which involves forming graft polymer through atom transfer radical polymerization of polymer monomers on the surface of inorganic nanosheets, regulating the distribution of polymer functional groups on the surface of inorganic nanosheets under the action of metal ions, and forming multi-interface structure materials with different cross-linking densities with metal ions through non-covalent bonds.