| 摘要 |
A hydrophobic proppant and preparation method thereof are disclosed. The aggregate particles of the hydrophobic proppant are coated with a coating resin. The coating resin comprises a hydrophobic resin and nano particles. The nano particles are evenly distributed in the coating resin in an amount of 5-60% by weight based on the weight of the coating resin. The hydrophobic proppant added with nano particles has a contact angle ? with water in the range of 120° = ? = 180°. In the proppant of the present invention, by adding nano particles to an existing resin that has been added with a low surface-energy substance having hydrophobic groups, a coarse surface having a micro-nano structure is generated at the outer surface of the resin film prepared, such that the contact angle ? at the solid-liquid contact surface on the outer surface of the coating resin of the proppant is greater than 120°. This thus greatly enhances the hydrophobicity of the proppant, such that the proppant has substantially increased water repellency and is adapted to a wider range of working conditions. |
