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Analytical method for content of short fibers in pole plate lead paste of lead-acid battery

A lead-acid battery and analysis method technology, applied in the direction of removing certain component weighing, etc., can solve the problems of no data support, unscientific and other problems, and achieve the effect of simple and convenient use of tools, fewer types, and accurate and reliable analysis results

Active Publication Date: 2012-04-11
JIANGSU LEOCH BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How to ensure that the short fibers in the lead paste are uniform in the paste, verify whether its strength meets the requirements after curing and drying, and whether there is burning loss after drying. At present, the uniformity of the short fibers is only judged visually. How much fiber is used to judge whether there is loss, which is unscientific and has no data support

Method used

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  • Analytical method for content of short fibers in pole plate lead paste of lead-acid battery
  • Analytical method for content of short fibers in pole plate lead paste of lead-acid battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: according to the following concrete steps analysis and the short fiber quality of the lead plaster that plastering completes:

[0012] Take the finished lead paste in three times and seal it with a PE bag; knead the lead paste into flakes by hand, take out the block lead paste, weigh 40g (accurate to 0.001g), put it into a 500mL beaker, and add the mass concentration 300mL of 12% nitric acid solution, boiled, stirred until there are no obvious lumps, so that the lead sulfate is dispersed, slowly sieved in the center of a 200-mesh sieve, so that the short fibers are accumulated in the center of the sieve, washed with water until the short fibers are white and free of impurities , Dry at 110°C for 30 minutes to obtain short fibers; calculate the mass percentage of short fibers in the lead paste by analyzing the short fiber content of the balance. The results are shown in Table 1.

[0013]

[0014] When the short fiber is added as an auxiliary material, t...

Embodiment 2

[0015] Embodiment 2: according to the following specific steps, analyze the lead paste that has been converted into a dry positive plate:

[0016] Take the lead plaster that has been turned into a dried positive plate in three times, and seal it with a PE bag; take out the block lead plaster, weigh 40g (accurate to 0.001g), put it into a 500mL beaker, add 200mL of nitric acid and hydrogen peroxide mixed solution, stir and dissolve until nothing Obvious pimples, the solution is translucent and turbid, slowly sieved at the center of a 200-mesh sieve, so that the short fibers are accumulated in the center of the sieve, washed with water until the short fibers are white and free of impurities, and dried at 110°C for 30 minutes to obtain short fibers; by Analyze the short fiber content of the balance scale, and calculate the mass percentage of the short fiber in the lead paste. The results are shown in Table 2.

[0017]

[0018] The positive lead paste is cured, dried, and chem...

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Abstract

The invention discloses an analytical method for the content of short fibers in pole plate lead paste of a lead-acid battery. The method comprises the following steps: dissolving positive plate lead paste with a mixed solution of nitric acid and hydrogen peroxide, or dissolving lead paste, a green plate and negative plate lead paste with a nitric acid solution; sieving and separating short fibers, and carrying out drying to obtain the short fibers; measuring the content of the short fibers with an analytical balance and calculating the mass percent of the short fibers in lead paste; wherein, the mixed solution of nitric acid and hydrogen peroxide is obtained by adding 20 mL of hydrogen peroxide with a mass concentration of 30% into 1000 mL of nitric acid with a mass concentration of 12%, and the nitric acid solution is nitric acid with a mass concentration of 12%. The method provided in the invention analyzes the content of short fibers in lead paste so as to determination uniformity of short fibers in lead paste and the content of short fibers in lead paste in a cured and dried green plate and in formed and dried positive and negative plates so as to determination whether there is a loss, thereby enabling the content of short fibers to meet technical requirements, strength of lead paste to be achieved and vibration resistance, cyclic endurance and no shedding of lead paste ofbattery pole plates to be guaranteed.

Description

technical field [0001] The invention relates to a lead-acid storage battery, in particular to a method for analyzing the content of short fibers in the lead paste of the pole plate of the lead-acid storage battery. Background technique [0002] In the production of lead-acid battery plates, it needs to go through the processes of mixing paste, coating, curing and drying, chemical formation, and drying. In order to have a good bonding strength for the lead paste, an appropriate amount of short fiber is usually added to the lead paste and the auxiliary materials of the paste. , the specific amount ranges from 0.09% to 1%. How to ensure that the short fibers in the lead paste are uniform in the paste, verify whether its strength meets the requirements after curing and drying, and whether there is burning loss after drying. At present, the uniformity of the short fibers is only judged visually. It is unscientific and unsupported by data to determine whether there is a loss base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
Inventor 彭小勐袁芳黄兆云
Owner JIANGSU LEOCH BATTERY
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