Ternary extractant and its application, and method for extracting antioxidant 1010 from polyolefin material

The invention discloses a ternary extractant and its application, and a method for extracting an antioxidant 1010 from a polyolefin material. The ternary extractant is composed of alcohol R OH, ester R COOR and C5-C7 alkane, and a ratio of the alcohol R OH to the ester R COOR to the C5-C7 alkane is (4-7):(2-5):1, wherein R is a C1-C3 alkyl group, R is H or a C1-C2 alkyl group, and R is a C1-C2 alkyl group. The invention also provides the method for extracting the antioxidant 1010 from the polyolefin material. The method comprises a step that the ternary extractant is mixed with the polyolefin material containing the antioxidant 1010 to extract the antioxidant 1010. The ternary extractant has the characteristics of suitable solubility and polarity, and strong pertinence against the antioxidant 1010; the ternary extractant has low requirements on conditions comprising the temperature, the pressure and the like in the extraction process, and has a good apparatus applicability; and the stability of the antioxidan