Octaphenylcyclotetrasiloxane can be physically mixed in antifouling coatings in the form of monomers, reducing the surface energy of the coating, increasing the flexibility of the coating film, and also acting as a defoamer. An application example is as follows: a heat dissipation coating composed of the following raw material components: 100-150 parts polyvinyl chloride, 78-80 parts polyether polyol, 80-85 parts polymethyl methacrylate, 55-80 parts polytetrafluoroethylene, 65-70 parts polyisoprene, 80-90 parts polypropylene, 6-10 parts alumina, 6-8 parts magnesium oxide, 4-6 parts octaphenylcyclotetrasiloxane, 6-8 parts sodium thiosulfate, 7-9 parts dodecyldimethylaminoethyl ester, 4-6 parts yttrium acetylacetone 5-8 parts of 2-thiophenyltrifluoroacetone, 6-8 parts of methyl methacrylate, 6-8 parts of dibutyltin dilaurate, 8-10 parts of quartz powder, 8-10 parts of silica powder, 8-12 parts of silica, 7-9 parts of n-butanol, 3-5 parts of dimethyl carbonate, 2-4 parts of para phenylenediamine, 3-5 parts of stearyl benzoyl methane, 4-5 parts of triethyl phosphite, 8-10 parts of titanium dioxide, and 12-15 parts of bentonite. The heat dissipation coating of the present invention has excellent heat dissipation effect, good coating adhesion, strong stability, safety, and non-toxic side effects.