Coating-enhanced low-density carbonization-free solid-state electrolytic capacitor paper and preparation method thereof

A technology of electrolytic capacitor paper and solid-state electrolysis, applied in pulp beating methods, etc., can solve problems such as large energy consumption, high heating temperature, and structural damage of cathode and anode foils, so as to ensure smooth production, reduce side reactions, and improve adsorption Effect

Inactive Publication Date: 2019-01-04
ZHEJIANG KAN SPECIALITIES MATERIAL +1
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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

Method used

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  • Coating-enhanced low-density carbonization-free solid-state electrolytic capacitor paper and preparation method thereof

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example 2

[0024] The beating degree and wet weight of sisal pulp after decompression are 15°SR and 15.3g respectively, and the pulp concentration after decompression is 2%; after the PET polyester fiber is dispersed, the pulp concentration is 2%, the fiber length is 5mm, and the fineness is 1.5dtex . Mix the two kinds of fibers. After mixing, Manila hemp pulp and PET polyester fiber account for 50% and 50% of the total fiber dryness respectively. After mixing, the slurry concentration is 1%. Forming, forming on the Internet with a concentration of 0.1%, and then obtaining the finished product after pressing, drying, coiling and cutting.

Embodiment 1

[0026] The beating degree and wet weight of Manila hemp pulp are 17 °SR and 27.5g respectively after deflaking, and the pulp concentration after deflaking is 2%; after the PET polyester fiber is dispersed, the pulp concentration is 2%, the fiber length is 5mm, and the fineness is 0.5dtex . Mix the two kinds of fibers. After mixing, Manila hemp pulp and PET polyester fiber account for 50% and 50% of the total fiber dryness respectively. After mixing, the slurry concentration is 1%. Forming, online forming concentration is 0.05%, and then the finished product is obtained after pressing, drying, spray coating, drying, coiling and slitting. The coating liquid is polyvinyl alcohol aqueous solution, the mass concentration is 1.5%, and the coating amount is 2% of the absolute dry mass of the paper after cloth.

Embodiment 2

[0028] The beating degree and wet weight of Manila hemp pulp after flaking are 17 °SR and 27.5g respectively, and the pulp concentration after flaking is 2%; after the PET polyester fiber is dispersed, the pulp concentration is 2%, the fiber length is 5mm, and the fineness is 1.5dtex . Mix the two kinds of fibers. After mixing, Manila hemp pulp and PET polyester fiber account for 45% and 55% of the total fiber dryness respectively. After mixing, the slurry concentration is 1%. Molding, online forming concentration is 0.1%, and then the finished product is obtained after pressing, drying, spray coating, drying, coiling and slitting. The coating liquid is polyvinyl alcohol aqueous solution, the mass concentration is 2%, and the coating amount is 2% of the absolute dry mass of the paper after cloth.

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Abstract

The invention belongs to the field of electrolytic capacitor papers, in particular to a coating-enhanced low-density carbonization-free solid-state electrolytic capacitor paper and a preparation method thereof. The raw materials of the electrolytic capacitor paper comprise hemp pulp and chemical fibers; a beating degree of the hemp pulp is 10-30 degree SR, and a wet weight is 10-40 g; the length of the chemical fibers is 1.5-15 mm, and the fineness of the chemical fibers is 0.1-3 dtex; according to a dry weight percentage, the hemp pulp is 10-80% and the chemical fibers are 20-90%; and the surface of the electrolytic capacitor paper is coated with an enhancement layer through spraying or dipping, and the coating amount after coating is 1-10% of an absolute dry weight of the paper. The paper is coated, so that the paper strength can be further enhanced, and a smooth production of capacitors can be ensured.

Description

technical field [0001] The invention belongs to the field of electrolytic capacitor paper, in particular to a coating-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 conta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21D1/02
CPCD21D1/02
Inventor 华一鸣左磊刚李南华邵卫勇占浩何江颜鲁鸣其他发明人请求不公开姓名
Owner ZHEJIANG KAN SPECIALITIES MATERIAL
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