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Electrically conductive paint for internal surface of battery shell and its preparing process

A technology of conductive coatings and battery shells, applied in the direction of conductive coatings, etc., can solve the problems of low genuine product rate, serious pollution, small battery shell diameter, etc., and achieve the effect of stable quality and uniform coating thickness

Inactive Publication Date: 2003-01-15
FUQI CHEM HUIZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the production of alkaline batteries in my country, the battery case is mostly plated with electroplating solution for nickel plating, which causes serious pollution. At the same time, the battery case has a small diameter and a long tube body, which will form deep holes and blind holes.
The current distribution relationship of electroplating makes it difficult to completely and evenly cover the inner wall of the deep hole with the plating layer, and the inner wall layer is often thinner, which makes the rate of genuine products lower, and the electrical performance of the battery naturally declines during the storage period, and the SC short circuit is 4-6.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Stir 5 kg of polyurethane resin and 0.5 kg of BYK163 mixture for 20 minutes; add 45 kg of acetone and 40 catties of graphite powder, stir for 10 minutes, and grind until the particle size is less than 8 microns; add 1 kg of conductive additive EFKA781, stir for 5 minutes, filter pack. Can be used for spraying.

[0023] Get paint property: color black

[0024] Appearance viscous liquid

[0025] Specific gravity 1.5

[0026] Solids content 56% by weight

[0027] Ignition point 15°C

[0028] Viscosity 1500cps 20℃

[0029] Valid for 1 year

[0030] Performance of the paint film on the inner wall of the battery case: color black

[0031] Hardness HB

[0032] Adhesion 100%

[0033] Conductivity 1.2 ohm / cm

[0034] Temperature resistance 104℃

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PUM

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Abstract

An electrically conductive paint for the inner surface of battery shell is prepared from one or more of polyurethane resin, acrylic resin and epoxy resin (10-20 wt portions), electric conducting powder (30-50) and organic solvent (30-60) through mixing said resin with disperser, and sequentially adding organic solvent, electric conducting powder and assistant. Its advantages are use of spray coating, high stability and no pollution.

Description

technical field [0001] The invention relates to the field of coatings, in particular to conductive coatings on the inner walls of battery casings. [0002] The invention also relates to a method for preparing the coating. Background technique [0003] In the production of alkaline batteries in my country, electroplating solution is often used for electroplating nickel plating on the battery case, which causes serious pollution. At the same time, the small diameter of the battery case and the long tube body will form deep holes and blind holes. The current distribution relationship of electroplating makes it difficult to completely and evenly cover the inner wall of the deep hole with the plating layer, and the inner wall layer is often thinner, which makes the rate of genuine products lower, and the electrical performance of the battery naturally declines during the storage period, and the SC short circuit is 4-6. . Contents of the invention [0004] The purpose of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/24
Inventor 赵少玲宋国麟
Owner FUQI CHEM HUIZHOU