| abstract |
The invention relates to the technical field of insulators and provides an anti-pollution flashover porcelain insulator and a preparation method thereof. The porcelain insulator sequentially comprises a porcelain insulator substrate, a filling layer and a super-hydrophobic coating from inside to outside, wherein the coating used by the filling layer comprises the following components in parts by weightThe raw materials of (A): SiO 2 2 ‑Al 2 O 3 ‑ZrO 2 20-30 parts of composite sol, 5-10 parts of bauxite, 0.5-3 parts of sodium tripolyphosphate, 0.5-3 parts of sodium dihydrogen phosphate and 5-10 parts of a silane coupling agent; the super-hydrophobic coating is formed by coating a fluorinated sol solution on a porcelain insulator substrate and then drying the ceramic insulator substrate, wherein the fluorinated sol solution comprises SiO 2 ‑La 2 O 3 Sol, hydrophobic gas-phase nano-silica, a fluorinating agent and a silane coupling agent. The super-hydrophobic coating has good hydrophobicity and self-cleaning capability, and water drops can adsorb pollutants such as dust, bacteria and the like adhered to the surface of the insulator, so that the surface of the insulator is always kept clean, and the anti-pollution flashover performance of the insulator is greatly improved. |