Surface modification floating bead-containing heat-insulation powdery coating and preparation method thereof

The invention provides a surface modification floating bead-containing heat-insulation powdery coating. The surface modification floating bead-containing heat-insulation powdery coating is characterized by comprising 54 to 62 parts by mass of a film-forming material, 0.2 to 4.2 parts by mass of one or more curing agents, 1.0 part by mass of one or more flatting agents, 1.0 part by mass of a brightening agent, 0.2 parts by mass of a degassing agent, 56 to 64 parts by mass of one or more filling materials and 30 to 38 parts by mass of hollow beads. The invention also provides a preparation method of the surface modification floating bead-containing heat-insulation powdery coating. The surface modification floating bead-containing heat-insulation powdery coating has low heat conductivity and 0-grade dry adhesiveness, can be prepared conveniently and has a wide application prospect.