Water-based nanoscale composite thermal insulation coating and preparation method thereof

The invention discloses a water-based nanoscale composite thermal insulation coating and a preparation method thereof. The materials comprise the following components in parts by weight: 35 to 50 parts of water-based fluorocarbon emulsion, 5 to 15 parts of light polymer hollow microspheres, 5 to 10 parts of hollow glass microspheres, 5 to 10 parts of nanoscale ATO slurry, 5 to 15 parts of nanoscale metal powder, 3 to 8 parts of nanoscale titanium dioxide, 0.2 to 0.5 parts of dispersant, 0.4 to 0.8 parts of thickening agent, 0.2 to 0.4 parts of anti-mildew and bactericidal agent, 0.5 to 2.5 parts of film coalescing aid, 0.6 to 1.6 parts of silane coupling agent and 15 to 25 parts of deionized water. The coating disclosed by the invention can effectively reflect thermal energy conduction, block thermal radiation and stop infrared thermal energy, the thermal insulation property is excellent, energy consumption is low, the thermal insulation effect is remarkable, the service life is long,the preparation method is