Preparation method of hollow sphere plastic pigment

The invention relates to the technical field of hollow sphere plastic pigments, and particularly discloses a preparation method of a hollow sphere plastic pigment, which comprises the following steps: S1, adding 200 parts of styrene-butadiene copolymer into 200 parts of distilled water with the temperature of 45-60 DEG C, and stirring uniformly; continuously stirring in the adding process until 200 parts of the styrene-butadiene copolymer are completely dissolved to prepare a solution I, putting the solution I into a sealed container, and ensuring that the temperature of the solution I is always 50-60 DEG C; s2, 150 parts of styrene-acrylic acid copolymer is added into 300 parts of distilled water at the temperature of 60-70 DEG C, and the distilled water needs to be continuously heated in the process of adding the 150 parts of styrene-acrylic acid copolymer into the distilled water, so that the temperature of the distilled water is increased by 8-12 DEG C; in the process of adding 150 parts of styrene-acryli