Functional finish paint for maintaining aerodynamic shape of ceramic heat-proof coating and preparation method thereof

The invention belongs to the technical field of special coating materials, and particularly relates to functional finish paint for maintaining the aerodynamic shape of a ceramic heat-proof coating and a preparation method of the functional finish paint. The functional finish paint comprises a component A and a component B; the component A comprises a base material accounting for 75-80% of the total weight of the component A and a pigment accounting for 20-25% of the total weight of the component A; the base material comprises the following raw materials in parts by weight: 50-60 parts of organic silicon resin, 5-10 parts of a reinforcing agent and 3-5 parts of a matting agent; the component B comprises a cross-linking agent and a catalyst in a mass ratio of 10: 1. The functional finish paint has the characteristic of easily forming uniform microcracks in a high-temperature flight environment, and the cracks of the finish paint extend to the surface of the heat-proof coating, so that the uniform microcracks ar