A temperature-resistant high-strength capacitor plastic case

Abstract

The invention discloses a temperature-resistant high-strength plastic case for a capacitor, and belongs to the technical field of capacitors. The temperature-resistant high-strength plastic case is specifically prepared from the following materials of polycarbonate, polyethersulfone resin, polyfluoroalkoxy, polyether ether ketone, modified mullite powder, hydroxy propyl distarch phosphate, rock wool, nano rare earth powder, coal ash, n-butyl alcohol, polyanionic cellulose, a thickener, a defoamer, a dispersant, sodium dodecyl benzene sulfonate, disodium hydrogen phosphate and soybean oil. The prepared plastic case is good in processing characteristics, high in integral strength, high in dielectric strength, high in noise reduction performance and high in temperature resistance, and has very high popularization and application values.

Description

technical field [0001] The invention belongs to the technical field of capacitors, and in particular relates to a plastic case of a temperature-resistant high-strength capacitor. Background technique [0002] Most existing power capacitor casings are usually made of stainless steel or ABS engineering plastics. The former shell is bulky, and the cost is high, easy to rust, and it is very easy to cause shell breakdown and fire phenomenon, which is gradually being replaced by ABS material. Although the ABS material shell is light in weight, the wall thickness of the shell made of this material must be more than 5cm, otherwise the deformation resistance temperature is low and it is easy to deform, but when the wall is too thick, the processing difficulty increases and there are many waste products during production. , the pass rate is low, which increases the production cost. At the same time, the ABS material is easy to absorb water, resulting in a decrease in the insulation p...

AI Technical Summary

Problems solved by technology

The former shell is bulky, and the cost is high, easy to rust, and it is very easy to cause shell breakdown and fire phenomenon, which is gradually being replaced by ABS material

Although the ABS material shell is light in weight, the wall thickness of the shell made of this material must be more than 5cm, otherwise the deformation resistance temperature is low and it is easy to deform, but when the wall is too thick, the processing difficulty increases and there are many waste products during production. , the pass rate is low, which increases the production cost. At the same time, the ABS material is easy to absorb water, resulting in a decrease in the insulation performance of the capacitor case and a decrease in the dielectric strength.

With the development of power capacitor technology, its charge capacity and load gradually increase, followed by problems such as temperature, strength, noise, etc. The International Large Power Grid Conference in 2002 pointed out that the noise of power capacitors in converter substations is as high as 105dB. Moreover, the operating temperature of the capacitor increases, resulting in a decrease in the strength of the shell and other properties, which affects its service life.