Low-frequency shielding coating and preparation method thereof

The invention provides a low-frequency shielding coating and a preparation method thereof. The method comprises the following steps: preparing a flaky powder metal filler; the flaky powder metal filler is subjected to heat treatment in inert atmosphere or vacuum, and heat treatment filler is obtained; and mixing the heat-treated filler with resin and an additive to obtain the low-frequency shielding coating. The magnetic conductivity, the electric conductivity and the coercive force of the material are adjusted by adjusting the proportion of the metal powder and ball milling process parameters, and then the low-frequency broadband efficient shielding coating is prepared. The preparation method provided by the invention is simple, high in efficiency and easy to industrialize, the prepared filler is flaky soft magnetic powder, can break through the Snoke limit and has relatively high magnetic conductivity, and a coating prepared by mixing the filler with resin has efficient shielding performance. 本发明提供了一种低频屏蔽涂料