Method for preparing high throughflow nanometre composite lightning arrester valve plate

Abstract

The invention relates to and provides a method for preparing high throughflow nano composite arrester varistor, and its characteristic: it adopts nano ZnO material as the main material, adds nano powder additive in 5-20wt% to mix them fully, makes press forming by a two-way press to form the varistor, then sinters at 900-1100 deg.C to make a main body of ZnO varistor; sprays aluminum on the main body and coats an inorganic high resistance layer on the side of the ZnO varistor, where the high resistance layer is mainly made of lead oxide or chrome oxide; then coats the side with heavy current-withstanding nano insulating composite coating prepared of nano functional fillings and epoxy oxazolidinone resin in the ratio of 20-30 to 70-80 (wt%), uniformly roll-coats the prepared nano insulating composite coating on the side, dries at a high temperature of 300 deg.C, and makes it.

Description

Technical field

[0001] The invention relates to a preparation method of a high-throughflow nanocomposite material arrester valve sheet. It belongs to the technical field of chemical compound preparation or the technical field of functional ceramic material manufacturing. Background technique

[0002] Lightning arrester is a kind of protection equipment that can absorb overvoltage energy and limit the amplitude of overvoltage. When in use, install the arrester near the protected equipment and connect it in parallel with the protected equipment. The protection characteristics of lightning arresters are the basis for the insulation coordination of power transmission and distribution equipment. A lightning arrester with excellent performance can limit the overvoltage in the power system to a level that is harmless to insulation. Improving the protection performance of the arrester can not only improve the operational reliability of the power transmission and distribution system, but ...

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