Preparation method of alkaline battery negative gel and alkaline battery negative gel

A technology of alkaline batteries and gelling agents, applied in the field of polymers, can solve the problems affecting the impact resistance of alkaline batteries, storage and transportation performance, processing and filling performance, reducing the crosslinking uniformity of products, and difficult control of polymerization reactions, etc., to achieve Effect of good performance, short gelation time, excellent impact resistance
CN104844755BActive Publication Date: 2017-03-01GUANGZHOU TINCI MATERIALS TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGZHOU TINCI MATERIALS TECH
Publication Date
2017-03-01

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Abstract

The invention discloses an alkaline battery negative electrode gel preparation method which specifically comprises the following steps: 1) under the protection of nitrogen, adding unsaturated carboxylic acid monomer, organic solvent and dispersing agents to a reactor, stirring the mixture and heating the mixture to the temperature of 55-80 DEG C; 2) adding a solution comprising an initiator and a solution comprising a cross-linking agent to a reaction system in the step 1) in a dropping manner, and conducting reacting for 2-10 hours; and 3) after the reaction is finished, carrying out suction filtration and drying, and thus the alkaline battery negative electrode gel is obtained. The obtained alkaline battery negative electrode gel is uniform in crosslinking. Meanwhile, the invention also provides the alkaline battery negative electrode gel obtained by using the preparation method. When the alkaline battery negative electrode gel is applied to the negative electrode of an alkaline battery, the obtained gel negative electrode suspension zinc powder is strong in capability and good in impact resistance of the alkaline battery. Meanwhile, by using the alkaline battery negative electrode gel, the production process of the battery is allowed to be simper, and the battery processing difficulty is reduced.
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Description

technical field

[0001] The invention relates to the technical field of macromolecules, and provides a preparation method of an alkaline battery negative electrode gel and the alkaline battery negative electrode gel prepared by the method. Background technique

[0002] Alkaline batteries are one of the best performing primary batteries and have become the most common battery varieties in the market. At present, the annual output of major alkaline battery manufacturers is in the hundreds of millions to several billions, which shows that the market for alkaline batteries is huge.

[0003] The negative electrode of alkaline batteries is a mixture of zinc powder and strong alkaline electrolyte (high concentration KOH aqueous solution). In order to prevent zinc powder from settling in the electrolyte and ensure the discharge performance of alkaline batteries, it is usually necessary to add condensate to the negative electrode. The glue plays the role of thickening and preventing ...

Claims

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