The invention belongs to the technical fields of antifouling coatings and
underwater coatings, and discloses a self-
polishing antifouling coating excluding cuprous
oxide and organic
tin and a preparation method thereof. Problems that an existing
antifouling coating is not environment-friendly, and the like, are solved. The
coating provided by the invention is prepared from a film-forming substance, a
capsaicin raw material, an environment-friendly antifouling agent, porous
powder, a
pigment, a filling material, an additive and a
solvent. The preparation method comprises the following steps ofdispersing through multiple-time agitation. According to the
antifouling coating provided by the invention, a compound antifouling agent is stored by utilizing the micron, the nanometer and a hole ofthe porous
powder; afterwards, the porous
powder and the compound antifouling agent are wrapped and isolated by utilizing silica and the compound antifouling agent; the
irritation action, on production and construction personnel, of the compound antifouling agent can be decreased to some extent; the rate that
capsaicin and the environment-friendly antifouling agent are released into
seawater is effectively controlled; thus, the long-time and continuous favorable antifouling effect is more easily obtained; the self-
polishing antifouling
coating is safe and friendly to a marine environment. Thepreparation method provided by the invention is simple in process and practical and basic raw materials to which the preparation method relates can be all purchased on the market.