Emulsion type compound antioxidant and preparation method thereof

The invention provides an emulsion type compound antioxidant and a preparation method thereof. The preparation method comprises the following steps: mixing a first antioxidant, a second antioxidant and solvent oil, and melting, so as to obtain a melt; mixing the melt with an emulsifying agent, so as to obtain a first mixture; shearing the first mixture at a first shearing speed, so as to obtain apre-shorn substance; mixing the pre-shorn substance with desalted water, so as to obtain a second mixture; and shearing the second mixture at a second shearing speed, so as to obtain the emulsion typecompound antioxidant, wherein the first shearing speed is higherthan the second shearing speed. The emulsion type compound antioxidant prepared by virtue of the preparation method is small in emulsion particle size, approximate to the particle size of a latex body and relatively low in dispersity, so that the stability of a product is remarkably improved. 本发明提供了种乳液型复合抗氧剂及其制备方法。该方法包括以下步骤：将第抗氧剂、第二抗氧剂和溶剂油混合，熔融，得到熔体；将熔体和乳化剂混合