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Sealant for self-repair and leak prevention of storage battery, and preparation method thereof

A self-healing, battery technology, applied in the preparation of microspheres, microcapsule preparations, chemical instruments and methods, etc., can solve the problems of shortening the service life, affecting the normal use of products, leakage of battery pole terminals, etc., and prolonging the service life. , Reduce the phenomenon of liquid leakage, the effect of easy promotion

Inactive Publication Date: 2014-01-29
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, if the battery is used for more than one year, some battery pole terminals will leak, which will affect the normal use of the product and shorten the service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The present invention will be further described below through specific embodiments. The following examples are preferred implementation forms of the present invention, but the implementation manners of the present invention are not limited by the following examples.

[0027] Take the semi-finished lead-acid battery without pole sealant, clean the connection between the battery pole and the cover, and clean it to neutral to ensure that the bonding surface is clean.

[0028] Mix 8g of silane coupling agent KH550 and 200ml of deionized water evenly to prepare an aqueous solution of silane coupling agent, add 20g of microcapsules, stir at 55°C for 1 hour, take out the capsules and rinse them with deionized water for 3-4 times, filter to obtain capsules, and place Dry at 50-60°C for 3-4 hours, and at room temperature for 24 hours to obtain grafted microcapsules;

[0029] According to the components and proportions in the comparative examples / examples in Table 1-2, add the gr...

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Abstract

The invention discloses a sealant for self-repair and leak prevention of a storage battery, and a preparation method thereof. The sealant comprises the following components in parts by weight: 55-75 parts of epoxy resin, 12-20 parts of a curing agent, 5-15 parts of grafting treated microcapsules and 4-10 parts of a catalyst, wherein the grafting treated microcapsules are microcapsules which are grafted by using a coupling agent previously and the weight of the coupling agent accounts for 3-5% of that of the microcapsule; the wall material of the microcapsules is urea resin and the capsule core of the microcapsule is a repairing agent dicyclopentadiene; the particle size distribution range of the microcapsule is from 220 to 250 microns; the wall thickness of the microcapsule is 3-7 microns. According to the invention, the self-repair material of the microcapsule having a certain particle size distribution range and a certain wall thickness and the catalyst are simultaneously added to the epoxy resin sealant; therefore, the cracks of the storage battery generated in the use process can be effectively repaired, the liquid leak phenomenon at the sealed position of the post terminal of the storage battery is reduced and the service life of the storage battery can be prolonged. The method is simple and practicable, and very easy to popularize.

Description

technical field [0001] The invention belongs to the field of self-repairing materials, and in particular relates to a sealant for self-repairing and leak-proofing of storage batteries and a preparation method thereof. Background technique [0002] At present, the poles of lead-acid batteries are mostly bolted, and the sealing quality between the poles of the battery and the shell cover is one of the important factors affecting the cycle life of the battery. The commonly used method for pole sealing is to first weld the pole with the lead sleeve on the battery cover, and then fill it with a layer of epoxy resin sealant for sealing. During the use of the battery, due to the alternating cold and heat of the ambient temperature (the process of charging and discharging will generate heat), or the impact, vibration, bumps and other external forces, the epoxy sealant will produce fine cracks, and the cracks will expand into cracks, and the battery will easily appear. Leakage, hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/02C09J11/00B01J13/02C09K3/10
Inventor 李明昆李建军孙东海郑一泉艾军伟陈锐岑茵
Owner KINGFA SCI & TECH CO LTD
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