Multilayer structure electrolytic capacitor paper and preparation method of electrolytic capacitor paper

Abstract

The invention discloses a multilayer structure electrolytic capacitor paper and a preparation method of the electrolytic capacitor paper. The multilayer structure electrolytic capacitor paper consists of voltage withstanding layer paper and absorption layer paper. The paper pulp of the voltage withstanding layer paper is selected from Agave sisalana, and the beating degree of the paper pulp employed by the voltage withstanding layer paper is 32-38degree SR. The absorption layer paper is a one layer or multilayer structure, the paper pulp of the absorption layer paper is one of or a mixture of several of bast fiber, phloem fiber and grass fiber, and the beating degree of the paper pulp employed by the absorption layer paper is 15degree SR-45degree SR. The preparation method of the electrolytic capacitor paper includes the preparation method of the voltage withstanding layer paper and the absorption layer paper. The method consists of: beating, net paper making, molding of the absorption layer paper and the voltage withstanding layer paper on net respectively, then compounding, and drying and reeling. The electrolytic capacitor paper designed by the invention can realize serialized voltage withstanding, and has good voltage withstanding performance and low short circuit rate. The designed preparation method can effectively produce the multilayer structure electrolytic capacitor paper, and avoids defective products in the production process.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a multilayer electrolytic capacitor paper and a method for preparing the electrolytic capacitor paper. Background technique [0002] Electrolytic capacitor paper is used between the anode and cathode of electrolytic capacitors. It can not only prevent the two poles from contacting, but also protect the electrolyte from leaking out. It is also called separator paper. Electrolytic capacitor paper is different from ordinary paper. Its requirements for paper are as follows: (1) high purity; (2) uniform paper quality, uniform thickness and tightness, uniform fiber arrangement, and sufficient Necessary mechanical and electrical strength; (3) Good absorbency, able to absorb enough electrolyte; (4) Good withstand voltage performance. The current electrolytic capacitor paper is mostly single-layer paper, and the variety is single, mostly made of pure wood pulp. The paper has the f...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to design a multi-layer structure of electrolytic capacitor paper and the preparation method of electrolytic capacitor paper, which can effectively solve the shortcomings of the existing electrolytic capacitor paper, which are prone to short circuit and cannot be serialized with withstand voltage. Realize serialized withstand voltage, and have electrolytic capacitor paper with good voltage resistance and low short-circuit rate, and...