Hydrophobic low-density high-strength polystyrene microsphere and preparation method thereof

In order to overcome the problems of poor hydrophobicity and inapplicability in acid and alkali fluid environments of polystyrene microspheres in the prior art, the invention discloses a durable hydrophobic low-density high-strength polystyrene microsphere. The durable hydrophobic low-density high-strength polystyrene microsphere comprises a sphere core, and a film layer coating the sphere core. The invention also discloses a preparation method of the durable hydrophobic low-density high-strength polystyrene microsphere. The preparation method comprises the following steps: preparing the sphere core, preparing low-temperature cured film-layer raw materials, coating the sphere core wih the film layer and the like. The durable hydrophobic low-density high-strength polystyrene microsphere provided by the invention has stable and durable hydrophobic performance and is applicable to acid and alkali fluid environments. The preparation method of the durable hydrophobic low-density high-strength polystyrene microsphe