Preparation method of natural bluestone self-cleaning surface

The invention discloses a preparation method of a natural bluestone self-cleaning surface, and belongs to the technical field of stone surface modification. According to the method, a micron rough structure is formed on the surface of natural bluestone through grinding and polishing; polydopamine serves as an adhesive to adhere fluorinated metal nanoparticles to the surface of the bluestone, so that a micro-nano composite structure with low surface energy is formed, and therefore the self-cleaning performance of the surface is achieved. The bluestone surface prepared by the method has the characteristics of self-cleaning performance, corrosion resistance and the like. The method for preparing the self-cleaning surface is simple in equipment process, low in cost, environmentally friendly and beneficial to large-scale production. 本发明公开一种天然青石自清洁表面的制备方法，属于石材表面改性技术领域。本发明所述方法通过打磨抛光在天然青石表面形成微米粗糙结构，然后用聚多巴胺作为粘附剂将经过氟化的金属纳米颗粒粘附在青石表面，形成低表面能的微纳米复合结构，从而实现表面的自清洁性能。该方法制备的青石表面具有自清洁、抗腐蚀等特点。本发明提出的制备自清洁表面的方法设备工艺简单，成本低廉，绿色环保，有利于规