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High voltage resistant electrolytic capacitor paper and preparation method thereof

A technology of electrolytic capacitor paper and voltage, applied in the direction of paper making, circuit, paper coating, etc., to achieve the effect of good loss value, excellent voltage resistance performance, and good water absorption

Active Publication Date: 2015-10-21
ZHEJIANG KAN SPECIAL PAPER CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The various electrolytic capacitors mentioned above achieve enhanced voltage resistance by setting a multi-layer structure or adding other components. At present, there is no high-voltage electrolytic capacitor paper made of conventional pulp materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A high-voltage resistant electrolytic capacitor paper, the base paper slurry of the electrolytic capacitor paper is composed of the following slurry in parts by weight:

[0034] 20 parts cotton pulp

[0035] 80 parts of insulating wood pulp.

[0036] The degree and wet weight of insulating wood pulp and cotton pulp are 65°SR and 5.5g, and 40°SR and 6g, respectively. The insulating wood pulp is refined by 6 single-disc refiners, and the refining concentration is 3.5%. Cotton pulp is pulped in a Dutch type beating machine with free beating, and the beating concentration is 2.5%. After beating the cotton pulp, 6% of the absolute dry weight of the pulp is added with a low-chlorine wet strength agent, which is formed and mixed with insulating wood pulp. After compounding, the base paper B is obtained through pressing, drying and rolling, and its weight is 35g / m 2 .

[0037] Base paper B is coated by metering bar, and the coating amount is 5.5g / m on the front side 2 , rev...

Embodiment 2

[0039] A high-voltage resistant electrolytic capacitor paper, the base paper slurry of the electrolytic capacitor paper is composed of the following slurry in parts by weight:

[0040] 30 parts cotton pulp

[0041] 70 parts of insulating wood pulp.

[0042] The pulp degree and wet weight of insulating wood pulp and cotton pulp are 60°SR and 5.5g, 50°SR and 5g, respectively. The insulating wood pulp is refined by 6 single-disc refiners, and the refining concentration is 3.5%. Cotton pulp is pulped in a Dutch-style beating machine with free beating, the beating concentration is 2.5%, after the cotton pulp is beaten, 5% of the absolute dry weight of the pulp is added with a low-chlorine wet strength agent, after molding and mixed with insulating wood pulp After compounding, the base paper B is obtained through pressing, drying and rolling, and its weight is 35g / m 2 .

[0043] Base paper B is coated by metering bar, and the coating amount is 6.0g / m on the front side 2 , revers...

Embodiment 3

[0045] A high-voltage resistant electrolytic capacitor paper, the base paper slurry of the electrolytic capacitor paper is composed of the following slurry in parts by weight:

[0046] 40 parts of cotton pulp

[0047] 60 parts of insulating wood pulp.

[0048] The pulp degree and wet weight of insulating wood pulp and cotton pulp are 75°SR and 5.5g, 40°SR and 4.0g, respectively. The insulating wood pulp is refined by 6 single-disk refiners, and the refining concentration is 3.5%. Cotton pulp is pulped in a Dutch-style beating machine with free beating, the beating concentration is 2.5%, after the cotton pulp is beaten, 5% of the absolute dry weight of the pulp is added with a low-chlorine wet strength agent, after molding and mixed with insulating wood pulp After compounding, the base paper B is obtained through pressing, drying and rolling, and its weight is 35g / m 2 .

[0049] Base paper B is coated by metering bar, and the coating amount is 6.0g / m on the front side 2 , r...

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Abstract

The invention relates to electrolytic capacitor paper and a preparation method thereof. Raw paper pulp of the electrolytic capacitor paper is composed of insulation wood pulp, cotton pulp and hemp pulp; at least one of the cotton pulp and the hemp pulp is selected, papermaking is conducted on the cotton pump and / or the hemp pump, and raw paper is prepared by the processed cotton pump and / or hemp pump and the insulation wood pump in a composite mode. According to the technical scheme, high voltage resistant electrolytic capacitor paper is obtained through raw paper production and subsequent coating processing, the high voltage resistant electrolytic capacitor paper is better in strength, soft in hand feeling, good in water-absorbing capacity, low in loss value and excellent in voltage-resistance performance, and the voltage-resistance performance can be increased by over 100 V / mm.

Description

technical field [0001] The invention relates to an electrolytic capacitor paper and a preparation method thereof. Background technique [0002] Electrolytic capacitor paper is an indispensable material for electrolytic capacitors. With the development of the electronics industry, capacitors have higher and higher requirements for withstand voltage under the premise of maintaining their capacity and loss value. At present, more and more raw materials are required for production. It is becoming more and more difficult to adapt to the requirements of ultra-high voltage capacitors, so finding a new material and a new manufacturing method has become a new direction for product innovation of electrolytic capacitors. [0003] Chinese invention patent application (application number: CN200510060448.3 - application date: 2005.08.23 ) discloses an electrolytic capacitor paper for enhancing voltage resistance and reducing loss. The electrolytic capacitor paper is made by adding ultraf...

Claims

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Application Information

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IPC IPC(8): D21H27/12D21H15/10D21H21/20D21H19/84D21H19/20
Inventor 严永平陈万平雷荣张程伟占浩林晓毅朱素梅
Owner ZHEJIANG KAN SPECIAL PAPER CO LTD
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