A kind of porcelain insulator and its preparation method

Abstract

The invention discloses a porcelain insulator and a preparation method thereof, and belongs to the field of porcelain insulators. The porcelain insulator mainly comprises the following raw materials in parts by mass: 40-60 parts of silicon dioxide, 10-15 parts of aluminium oxide, 8-10 parts of opoka, 8-10 parts of magnesium carbonate, 5-8 parts of kaolinite, 5-8 parts of sodium oxide, 5-8 parts ofpotassium oxide, 5-8 parts of kieselguhr, 3-5 parts of bismuth oxide, 3-5 parts of zirconium oxide, 3-5 parts of cerium oxide, 1-3 parts of lithium carbonate, 1-3 parts of barium carbonate and 0.5-1part of titanium dioxide. The bulk densities of the opoka and the kieselguhr are 0.36-0.55 g / cm<3>. According to the porcelain insulator and the preparation method thereof, the appearance inspection yield is improved by 23%, the bending strength can be increased by 130 KN / cm<2> at least, the flexural strength can be increased by 22 KN / cm<2> at least, and electric breakdown strength can be increased by 8.88 KV / mm at least.

Description

technical field [0001] The invention relates to the field of porcelain insulators, and more particularly, to a porcelain insulator and a preparation method thereof. Background technique [0002] Electric porcelain blanks refer to the mixture of clay raw materials, fluxing raw materials and other mineral raw materials in a certain proportion. After grinding and mixing, they become mud materials for blank making. When determining the proportions of various raw materials, it must be ensured that the blanks can satisfy The technical performance required by the insulator production process and the physical performance requirements of the fired porcelain. [0003] The long-term aging problem of electric porcelain under electric field is relatively serious, and the main key is the porcelain material; the electric porcelain insulators manufactured by the existing technology, due to the defects of the formula, the products produced are very easy to expand, crack, flexural strength, f...

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Problems solved by technology

[0003] The long-term aging problem of electric porcelain under the electric field is more serious, and the main key is the porcelain material; the electric porcelain insulator manufactured by the existing technology, due to the defect of the formula, the product produced is very easy to expand, crack, and the bending strength, flexural strength and electric strength The breakdown strength is not strong, and more importantly, the expansion and cracking of these products are likely to cause safety hazards, which not only damage the public property of the society, but also pose a great threat to people's physical and mental health

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