This invention discloses a near-
infrared responsive self-healing
coating and its preparation method, relating to the field of functional
coating technology. The near-
infrared responsive self-healing
coating, by weight, comprises the following components: 100 parts of matrix resin, 1-3 parts of near-
infrared absorber, 10-20 parts of self-healing agent, 8-15 parts of curing agent, 1-3 parts of dispersant, 0.5-2 parts of
defoamer, and 20-30 parts of
solvent. This invention utilizes a specific structured organic molecular near-infrared absorber, which exhibits good compatibility with the matrix resin and achieves uniform dispersion at the
molecular level. This avoids the problem of easy agglomeration in traditional inorganic photothermal materials, while significantly improving
photothermal conversion efficiency and solving the deficiency of insufficient
photothermal conversion capability of conventional organic dyes.