Preparation method of polysiloxane modified super-hydrophobic sponge for oil-water separation

The invention discloses a preparation method of polysiloxane modified super-hydrophobic sponge for oil-water separation, and belongs to the technical field of functional material preparation and application. According to the preparation method, a proper amount of hydrophobic gas-phase nano SiO2 is dispersed into a solution of hydroxyl-terminated polydimethylsiloxane and tetraethoxysilane, and the super-hydrophobic melamine sponge is prepared by a dipping method and has a good porous structure and hydrophobic and oleophylic characteristics. When being used for oil-water separation, the oil-water separator has excellent anti-compression performance and recycling performance. The process is simple and convenient, the cost is low, the main raw materials are non-toxic, harmless, green and environment-friendly, all the raw materials are commercially available industrial products, large-scale production is easy to achieve, and the method has wide application prospects in separation and recovery of oil-containing or