Post insulator and preparation method thereof

The invention discloses a post insulator and a preparation method thereof, and relates to the technical field of insulators. The preparation method comprises the following steps: S1, mixing and ball-milling bauxite, kaolin, potassium feldspar and illite to prepare new slurry; mixing the scrapped mud blank with water to obtain recycled slurry; s2, mixing the new pulp and the recycled pulp to obtain pug; s3, sequentially performing pugging, pressing, forming and drying on the pug to obtain a dry blank; s4, glazing and sintering the dry blank; and a circular-truncated-cone-shaped mud section is formed after pressing in the step S3. According to the invention, the circular-truncated-cone-shaped mud section is formed, so that the success rate in the drying and sintering process is increased, the stress of the mud blank in the drying and sintering process is reduced, and the cracking rate of the mud blank is reduced. 本发明公开了一种支柱绝缘子及其制备方法，涉及绝缘子技术领域；该制备方法包括以下步骤：S1、将铝矾土、高岭土、钾长石、伊利石混合球磨后制得新浆；将报废泥坯和水混合制得回收浆；S2、将所述新浆和所述回收