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Electrolytic capacitor paper

A technology for electrolytic capacitor paper and pulp, applied in the direction of electrolytic capacitors, capacitors, special paper, etc., can solve the problems of reducing plant fibers, limited beating degree of plant fibers, and difficulty in manufacturing capacitors.

Active Publication Date: 2009-10-21
浙江凯恩新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the beating degree of plant fiber is limited, it is impossible to reach 100 degrees, and the high degree of beating brings high loss, which is unacceptable for capacitors
When dealing with the problem of low loss of capacitors, this invention patent uses the method of reducing the degree of beating of plant fibers, but excessively reducing the degree of beating of plant fibers will inevitably affect the strength of the paper sheet, which will bring difficulties to the manufacture of capacitors, and the plant fibers Limited role in reducing losses in capacitors

Method used

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  • Electrolytic capacitor paper

Examples

Experimental program
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Effect test

example 1

[0013] Reference example 1: The insulating wood pulp is beaten to 94°SR by a disc mill, and the wet weight is 3.0g, and paper is made by a fourdrinier paper machine. Coiling after drying, the paper has a thickness of 40μm and a tightness of 0.89g / cm 3 , the tensile strength is 1.96kN / m, the water absorption height is 3mm / 10min in the longitudinal direction, 2mm / 10min in the transverse direction, the loss ratio is 2.65, and the breakdown voltage is 670V.

example 2

[0014] Reference example 2: sisal pulp was beaten to 35 ° SR, wet weight 14.5g, papermaking with a cylinder paper machine. Coiling after drying, the paper has a thickness of 40μm and a tightness of 0.54g / cm 3 , the tensile strength is 1.46kN / m, the water absorption height is 22mm / 10min in the longitudinal direction, 18mm / 10min in the transverse direction, the loss ratio is 0.56, and the breakdown voltage is 470V.

Embodiment 1

[0015] Embodiment 1: Add 5% ultrafine glass microfibers of 0.2 μm provided by Nanjing Aixin Glass Microfiber Products Co., Ltd. to the slurry of Reference Example 1, and make paper in the same way. After measuring, the thickness of the paper is 40μm, tightness up to 0.89g / cm 3 , the tensile strength is 1.90kN / m, the water absorption height is 4mm / 10min in the longitudinal direction, 3mm / 10min in the transverse direction, the loss ratio is 2.50, and the breakdown voltage is 675V.

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Abstract

The invention relates to an electrolytic capacitor paper, in particular to an electrolytic capacitor paper for enhancing voltage resistance and reducing loss. The electrolytic capacitor paper is made by adding ultrafine glass microfibers into papermaking slurry, the addition of the ultrafine glass microfibers is 5% to 80% of the weight of the electrolytic capacitor paper, and the diameter of the ultrafine glass microfibers is 0.1μm~10μm. The invention adopts adding ultra-fine glass microfibers into the slurry in the conventional electrolytic capacitor paper manufacturing process. Utilize the unique properties of ultra-fine glass microfibers to improve the voltage resistance of electrolytic capacitor paper, reduce its impedance, improve electrical performance, increase the life of electrolytic capacitors, and reduce the power loss of electrolytic capacitors.

Description

technical field [0001] The invention relates to an electrolytic capacitor paper, in particular to an electrolytic capacitor paper for enhancing voltage resistance and reducing loss. 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 keep the electrolyte, also known as capacitor 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. In aluminum electrolytic capacitors, due to the difference in voltage used in the circuit, aluminum electrolysis can be roughly divided into high-voltage and low-voltage. Correspondingly,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/02D21H27/38
Inventor 吴伯超
Owner 浙江凯恩新材料有限公司
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