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A kind of high-performance coated paper and its preparation method

A coated paper, high-performance technology, applied in papermaking, textiles and papermaking, synthetic cellulose/non-cellulose material pulp/paper, etc., can solve the difference in battery capacity and low temperature performance, increase battery internal resistance, increase internal Resistance and other problems, to achieve the effect of no difference in battery capacity and low temperature performance, strong acid absorption and liquid retention capacity, and lower battery internal resistance

Active Publication Date: 2016-03-02
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The material of the existing coated paper is ordinary paper made of plant fibers, which has the following disadvantages: poor temperature resistance, prone to plate adhesion during the drying process; high water content, generally ≥ 6.4%, reduces the drying efficiency of the plate ; High content of impurity ions, especially Fe, Cl ion content ≥ 100ppm, will accelerate the self-discharge of the battery in the later stage, resulting in attenuation of battery capacity; plant fiber has weak acid absorption capacity, which is not conducive to the absorption of acid during the formation of the plate, and increases the internal capacity of the battery. resistance; the rate of dissolution in sulfuric acid is different in the later stage, and the paper still partially exists on the surface of the plate after chemical formation, which increases the internal resistance and causes the difference in battery capacity and low-temperature performance

Method used

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  • A kind of high-performance coated paper and its preparation method
  • A kind of high-performance coated paper and its preparation method
  • A kind of high-performance coated paper and its preparation method

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preparation example Construction

[0026] The preparation method of high-performance coated paper in the embodiment comprises the following steps connected in sequence:

[0027] A. Add medium-alkali glass fiber and high-alkali glass fiber into water, beat and homogenize to obtain slurry, wherein the mass ratio of medium-alkali glass fiber and high-alkali glass fiber to water is 1:50~1:200 ;

Embodiment 1

[0030] Medium-alkali glass fiber chopped strands, produced by Yancheng Guanda Glass Fiber Factory, with a single filament diameter of 6.5 μm and a length of 12 mm; high-alkali glass fiber chopped strands, produced by Hebei Yutian Glass Fiber Factory, with a single filament diameter of 11 μm and a length of 12 mm; The ratio of medium-alkali glass fiber to high-alkali glass fiber is: 1:6; the ratio of glass fiber chopped strands to deionized water is 1:100, the general flow rate is 60L / min, the flushing flow rate is 300L / min, and the speed is 30 meters / min, the drying temperature is 240°C, the drying time is 3 minutes, and the thickness of the obtained coated paper is 0.3mm.

Embodiment 2

[0032] Medium-alkali glass fiber chopped strands, products of Tai’an Fuxiang Glass Fiber Products Co., Ltd., with a single filament diameter of 8 μm and a length of 15 mm; The ratio of alkali glass fiber to high alkali glass fiber is: 1:7; the ratio of glass fiber chopped strands to deionized water is 1:100, the general flow rate is 100L / min, the pulping flow rate is 600L / min, and the vehicle speed is 33 m / min min, the drying temperature is 240°C, the drying time is 4 minutes, and the thickness of the obtained coated board paper is 0.2mm.

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Abstract

The invention provides high-performance coated board paper and a preparation method thereof. The high-performance coated board paper is prepared from an acid-resistant fiber, wherein the acid-resistant fiber is one or a mixture of more than two out of medium-alkali glass fiber, high-alkali glass fiber, ceramic fiber or polytetrafluoroethylene (PTFE) fiber according to an optional ratio. According to the coated board paper, the problems that the lead-acid cell coated board paper is low in temperature resistance, easily adhered to a polar plate, high in moisture content, high in content of Fe and Cl ions, low in acid absorption capability and different in dissolution speeds in sulfuric acid and the like are effectively solved. The coated board paper has high acid absorption and liquid retention capacity, is acid-resistant and high-temperature-resistant and is not adhered to the polar plate, cell formation is promoted, the internal resistance of the cell is effectively reduced, the content of the Fe and Cl ions is less than or equal to 30ppm, and the lead-acid cell produced by utilizing the coated board paper has excellent performances such as zero late-stage self-discharge, low internal resistance and zero difference between battery capacity and low-temperature performance.

Description

technical field [0001] The invention relates to a high-performance coated paper and a preparation method thereof, which can be applied to the preparation of lead-acid storage batteries. Background technique [0002] As one of the important chemical power sources, lead-acid batteries have developed rapidly in various application fields, but there are also serious environmental pollution phenomena in the production process. Compared with the "gravity casting grid" manufacturing process commonly used in China, the grid manufacturing processes such as expanded (netting), punching, and continuous casting and rolling are "clean production technologies for lead battery plates". The process of this new technology is as follows: first, the lead ingot is made into a continuous lead strip through the "lead belt continuous casting and rolling" technology, and then it is manufactured into a grid through the "continuous punching (punching) technology" or "drawing technology". , and then ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H13/40D21H15/12
Inventor 沈维海赵东波陈晓燕倪君刘铁军朱益梅代丰宋尚军白耀宗
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD