Hydrophobic modification method of nano titanium dioxide

The invention discloses a nano titanium dioxide hydrophobic modification method, which comprises: dispersing a nano titanium dioxide raw material in a solvent, adding a silane coupling agent and a catalyst, and stirring to obtain a reactant; carrying out heating reflux treatment on the reactant, standing, cooling, and collecting a solid part at the lower layer; washing the solid fraction with ethanol; and drying and grinding the washed solid part to obtain the hydrophobic modified nano titanium dioxide. The technical problems that in the prior art, the technology is complex, and the machining cost is high are solved. 本申请公开了一种纳米二氧化钛疏水改性的方法，所述纳米二氧化钛疏水改性的方法包括以下步骤：将纳米二氧化钛原料分散于溶剂中，并加入硅烷偶联剂和催化剂，搅拌，得到反应物；将所述反应物进行加热回流处理后，静置，冷却后，收集下层的固体部分；用乙醇洗涤所述固体部分；将洗涤后的所述固体部分进行干燥，研磨，得到疏水改性的纳米二氧化钛。本申请解决了现有技术工艺复杂且加工成本较高的技术问题。