Enhanced low-tightness carbonization-free solid electrolytic capacitor paper and preparation method thereof

Abstract

The invention belongs to the field of electrolytic capacitor papers and particularly relates to enhanced low-tightness carbonization-free solid electrolytic capacitor paper and a preparation method thereof. The paper contains the following raw materials in percentage by dry weight: 10-80% of hemp pulp and 20-90% of chemical fiber, wherein the beating degree of the hemp pulp is 40-90degreeSR; the wet weight of the hemp pulp is 5-30g; the length of the chemical fiber is 1.5-15mm; and the fineness of the chemical fiber is 0.1-3dtex. The paper is prepared by adopting the hemp pulp and the chemicalfiber as raw materials through wet papermaking; a certain strength is imparted to the paper by beating the hemp pulp; the wettability of the paper to monomers is increased and the side reaction during the polymerization of conductive high molecular monomers is reduced by utilizing the chemical fiber; and therefore, the paper has high strength and good wettability to the monomers.

Description

technical field [0001] The invention belongs to the field of electrolytic capacitor paper, in particular to an enhanced low-density carbonization-free solid electrolytic capacitor paper and a preparation method thereof. Background technique [0002] The electrolyte in a solid electrolytic capacitor is a solid conductive polymer material. The structure of a solid electrolytic capacitor includes an anode, a cathode, electrolytic paper, and a solid conductive polymer material. Electrolytic capacitor paper is one of the indispensable raw materials for the preparation of electrolytic capacitors. In capacitors, it is mainly used to absorb monomers and oxidants to form polymers. At the same time, it plays the role of isolating plates and prevents short circuits caused by direct contact between anode and cathode. [0003] The traditional electrolytic capacitor paper is all cellulose material, which has a weak adsorption capacity for monomers. At the same time, cellulose contains a l...

AI Technical Summary

Problems solved by technology

Under this process, the entire capacitor needs to be heated to a higher temperature, the production process is complicated, and the high-temperature carbonization process will cause damage to the structure of the cathode and anode foils, resulting in unstable product performance and easy leakage current exceeding the standard; in addition, due to heating The high temperature consumes a lot of energy, which increases the production cost of the enterprise to a certain extent.

[0004] Therefore, in order to simplify the production process of solid electrolytic capacitors and reduce production energy consumption, a low-density carbonization-free solid electrolytic capacitor paper was developed (patent application number: 2018091011182, filing date: September 10, 2018). Paper has good adsorption to conductive polymer monomers, and will reduce the side reaction of conductive polymer monomers during polymerization. At the same time, there is no need to carbonize the capacitor paper during the capacitor production process, but the strength of the solid electrolytic capacitor paper not enough

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