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Enhanced electrolytic condenser paper and preparation method thereof

An electrolytic capacitor paper, enhanced technology, applied in special paper, paper, papermaking, etc., can solve the problems of low paper strength and difficulty in improving the production efficiency of electrolytic capacitors, and achieve increased tensile strength, low loss value, and excellent mechanical properties Effect

Inactive Publication Date: 2018-06-19
ZHEJIANG KAN SPECIAL PAPER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For some electrolytic capacitors, it is required to have lower internal resistance and loss. At this time, the electrolytic capacitor paper is required to have lower tightness, but the tightness of the paper decreases, and the strength of the paper will be lower, making the production of electrolytic capacitors Difficult to improve efficiency

Method used

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  • Enhanced electrolytic condenser paper and preparation method thereof
  • Enhanced electrolytic condenser paper and preparation method thereof

Examples

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Effect test

example 2

[0023] Sisal pulp with low beating degree: 40 parts

[0024] High beating degree Manila hemp pulp: 60 parts

[0025] The beating degree and wet weight of low beating degree sisal pulp are 46°SR and 9.1g respectively, and the beating degree and wet weight of high beating degree sisal pulp are 90°SR and 5.6g respectively. It is carried out through free beating in the type beater, and the beating concentration is 2.5%. High beating degree Manila hemp pulp is beaten by 3 sets of double disc refiners, and the beating concentration is 3.5%. After the beating is completed, it is formed by double cylinders and compounded, and then the finished product is obtained after drying, calendering, coiling and slitting, and its quantitative is 30g / m 2 .

Embodiment 1

[0027] An enhanced electrolytic capacitor paper, the raw paper pulp of the electrolytic capacitor paper is composed of sisal pulp with low beating degree and high beating degree:

[0028] Sisal pulp with low beating degree: 20 parts

[0029] High beating degree sisal pulp: 80 parts

[0030] The beating degree and wet weight of low beating degree sisal pulp are 40°SR and 10g respectively, and the beating degree and wet weight of high beating degree sisal pulp are 90°SR and 5.6g respectively. The beating machine is carried out through free beating, and the beating concentration is 2.5%. The high beating degree sisal pulp is beaten by three double-disk refiners, and the beating concentration is 3.5%. After the beating is completed, it is formed by a double cylinder and compounded. After drying, the polycarboxylate wet strength agent is dipped in the machine, and the coating amount is 0.1g / m 2 After coating, it is dried at a drying temperature of 128°C, and then dried, calender...

Embodiment 2

[0032] An enhanced electrolytic capacitor paper, the raw paper pulp of the electrolytic capacitor paper is composed of sisal pulp with low beating degree and high beating degree:

[0033] Sisal pulp with low beating degree: 30 parts

[0034] High beating degree sisal pulp: 70 parts

[0035] The beating degree and wet weight of low beating degree sisal pulp are 45°SR and 9.6g respectively, and the beating degree and wet weight of high beating degree sisal pulp are 92°SR and 5.4g respectively. It is carried out through free beating in the type beater, and the beating concentration is 2.5%. The high beating degree sisal pulp is beaten by three double-disk refiners, and the beating concentration is 3.5%. After the beating is completed, it is formed by a double cylinder and compounded. After drying, the polycarboxylate wet strength agent is dipped in the machine, and the coating amount is 0.3g / m 2 After coating, it is dried at a drying temperature of 130°C, and then dried, calen...

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Abstract

The invention relates to enhanced electrolytic condenser paper and a preparation method thereof. The base paper slurry of the enhanced electrolytic condenser paper is prepared from low beating degreesisal hemp pulp and high beating degree sisal hemp pulp, and the mass ratio of the low beating degree sisal hemp pulp to the high beating degree sisal hemp pulp is (20-40):(80-60); the beating degreeof the low beating degree sisal hemp pulp is 20-60 degrees SR, the wet weight is 2-16 g, the beating degree of the high beating degree sisal hemp pulp is 60-98 degrees SR, and the wet weight is 2-10 g; the base paper slurry is formed through twin cylinders and composited, after squeezing and drying are conducted, the surface of a paper sheet is coated with coating fluid, the coating weight is 0.1-1.0 g / m<2>, and the coating fluid is a polycarboxylic acid wet strength agent. The electrolytic condenser paper has the good water absorbing property, low loss value, excellent voltage resistance andexcellent mechanical property, and the tensile strength is increased by 0.5 kN / m or above.

Description

technical field [0001] The invention relates to an electrolytic capacitor paper and a preparation method thereof. Background technique [0002] Electrolytic capacitor paper is one of the key materials for the preparation of electrolytic capacitors. Its main function is to isolate the cathode and anode in the capacitor, absorb and maintain the electrolyte, also known as separator paper. [0003] Electrolytic capacitor paper belongs to the category of special paper and electronic components. Therefore, different from ordinary paper, electrolytic capacitor paper has the following requirements: (1) The purity should be high, and the impurities that affect the performance of the electrolyte and electrode foil should be strictly controlled; (2) The paper quality should be uniform, the thickness and tightness should be uniform, the fiber arrangement should be uniform, and there should be no paper defects such as holes and fiber bundles; (3) There must be necessary electrical and me...

Claims

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Application Information

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IPC IPC(8): D21F11/00D21H27/00
CPCD21F11/00D21H27/00
Inventor 张文超李南华杜献勇李大方梁勇军何江颜鲁鸣汪金佩谢培鑫
Owner ZHEJIANG KAN SPECIAL PAPER CO LTD
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