A kind of anti-shock ceramic insulator and its manufacturing method

Abstract

The invention discloses an impact-resistant ceramic insulator and a manufacturing method thereof. The impact strength of the insulator is not lower than 1.5J / cm 2 , the volume resistivity is not less than 1×10 14 Ω·cm, dielectric strength not less than 750kV / cm, thermal conductivity not less than 20W / m·K, flexural strength not less than 600Mpa, Young's modulus not less than 450Gpa, fracture toughness not less than 55Mpa; The finished insulator has a multi-layer buffer and support structure through multiple sintering methods for each 4mm-5mm, which can withstand multi-angle and high-frequency impact energy, and micro-structuring on the surface of the insulator, which is convenient on the one hand. In order to be used, on the other hand, the impact resistance is also increased; the impact-resistant ceramic insulator of the present invention has good economy, impact resistance, high fracture toughness, and good comprehensive mechanical properties.

Description

technical field [0001] The invention relates to the field of electronic components, in particular to an impact-resistant ceramic insulator and a manufacturing method thereof. Background technique [0002] Insulators are special insulation controls that can play an important role in overhead transmission lines. [0003] In the early years, insulators were mostly used on utility poles, and gradually developed into high-voltage wire connection towers where many disc-shaped insulators were hung at one end. It was used to increase the creepage distance, usually made of glass or ceramics, and was called an insulator. Insulators play two basic roles in overhead transmission lines, namely supporting wires and preventing current from returning to the ground. These two roles must be guaranteed; at the same time, insulators should have sufficient electrical insulation strength, moisture resistance and high temperature resistance. [0004] Among the relevant patents that have been appl...

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Problems solved by technology

[0004] Among the relevant patents that have been applied in China, the patent "High Insulation Silicon Carbide / Boron Nitride Ceramic Material and Its Preparation Method" (application number: 201310294766.0, publication date: 2015-01-14) discloses a silicon carbide / nitrogen Boron oxide ceramic material and its preparation method, but the two materials are brittle materials without any toughening treatment, the fracture toughness is not higher than 6Mpa, and the impact strength is not higher than 0.27J / cm 2 , easy to break or break under transportation and other vibration conditions. In addition, the invention belongs to high-temperature sintering (1900°C-2300°C) heating isostatic pressing molding, and its cost is too high to be industrialized. Inorganic nanocomposite ceramics and its preparation method and use" (application number: 201410310359.9, publication date: 2015-12-30), which discloses an inorganic nanocomposite ceramic, which ensures that its active ingredients are highly brittle materials after being made into ceramics , without toughening treatment, and because several active ingredients have no obvious functional complementarity, the comprehensive mechanical properties are poor

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