Super-hydrophobic ultralow-density high-strength polystyrene microsphere and preparation method thereof

The invention discloses a super-hydrophobic ultralow-density high-strength polystyrene microsphere. The microsphere is prepared from the following raw materials in parts by weight: 0.025 to 15 parts of a dispersing agent, 10 to 20 parts of styrene, 0.5 to 3 parts of divinyl benzene, 0.5 to 10 parts of silane, 0.1 to 0.6 part of an initiator, 50 to 300 parts of deionized water and a proper amount of a pH regulator. Meanwhile, the invention also discloses a preparation method of the super-hydrophobic ultralow-density high-strength polystyrene microsphere. The preparation method comprises the following steps: preparing a water phase and an oil phase, carrying out mixing, adjusting a pH value, conducting heating, and carrying out suction filtration and washing. According to the super-hydrophobic ultralow-density high-strength polystyrene microsphere and the preparation method thereof in the invention, silane containing double bonds is introduced into a free radical polymerization system ofstyrene and divinyl benz