Slow-release functional composite material, preparation method thereof and slow-release antifouling composition

The invention belongs to the technical field of antifouling, and particularly relates to a slow-release functional composite material, a preparation method thereof and a slow-release antifouling composition. The composite material with the slow-release function comprises a carrier material with the slow-release function and a functional auxiliary agent, and the mass ratio of the functional auxiliary agent to the carrier material with the slow-release function is 1: (0.5-4). The carrier material disclosed by the invention is porous and can be used as a carrier with a slow release function, and a mesoporous material taking silicon as a framework is formed through polycondensation reaction of silicon hydroxyl generated by hydrolysis of silicate ester, so that the carrier material has a slow release effect; the long-term effect of the functional auxiliary agent can be improved, and slow release of sensitive coating components is controlled through the protection effect of mesopores; the pore size is adjustable, a