Double-penetration type high-performance noise reduction water-based damping coating and preparation method thereof

The invention discloses a double-penetration type high-performance noise reduction water-based damping coating which is mainly prepared from the following raw materials in parts by weight: 20-25 partsof water, 50-60 parts of acrylic resin emulsion, 8-12 parts of styrene-acrylic emulsion, 0.5-2.0 parts of defoaming agent, 0.5-1.0 part of nano graphite flake, 2-3 parts of dispersing agent, 0.1-0.3part of preservative, 1.0-1.5 parts of antirust agent, 215-280 parts of hydrated alumina powder and 1.5-2.5 parts of thickening agent. In addition, the invention further provides a preparation methodthe double-penetration type high-performance noise reduction water-based damping coating. The double-penetration type high-performance noise reduction water-based damping coating has noise reducing performance, the weighting sound insulation index of a base material coated with the coating is increased by 4 dB to 4.2 dB, the technical requirements of water-based damping coatings for high-speed trains are met and the defects