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Anticorrosive chromium-free passivating agent for battery steel shell and preparation method of anticorrosive chromium-free passivating agent for battery steel shell

A technology of chromium-free passivation agent and battery steel shell, applied in the direction of metal material coating process, etc., can solve the problems of being unsuitable for electronic battery anti-corrosion, the effect is not very ideal, etc. wide range of effects

Active Publication Date: 2016-09-21
宜春新源电池科工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the battery steel case improves the corrosion resistance of the battery material by coating the metal surface with a metal protective layer, but the effect is not very satisfactory
The electrochemical protection method is not suitable for the anti-corrosion of electronic batteries.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] An anti-corrosion chromium-free passivator for battery steel case, the components and the mass parts of each component are as follows: 5 parts of sodium bisulfite, 5 parts of titanium oxynitrate, 1 part of epoxy silane, 3 parts of tartaric acid, citric acid 1 part, 2 parts of sodium benzoate, 2 parts of acetic anhydride, 4 parts of methyl orthosilicate, 1 part of diaminodiazepine, 0.2 part of linolenate, 3 parts of ethyl orthosilicate, 2 parts of zinc vanadate, 2 parts of surfactant dodecyltrimethylammonium bromide, 30 parts of water.

[0020] The preparation method comprises the steps of:

[0021] 1) Add sodium bisulfite, titanyl nitrate, citric acid and vanadate into water, stir at 40°C for 20 minutes, and dissolve to obtain solution A;

[0022] 2) Mix epoxysilane, tartaric acid, sodium benzoate, acetic anhydride, methyl orthosilicate, diaminodiazoline, linolenate and ethyl orthosilicate, heat to 90°C, stir for 40min, and cool to room temperature , to obtain solutio...

Embodiment 2

[0025] An anti-corrosion chromium-free passivator for battery steel case, the components and the mass parts of each component are as follows: 15 parts of sodium bisulfite, 10 parts of titanium oxynitrate, 5 parts of epoxy silane, 11 parts of tartaric acid, citric acid 5 parts, 8 parts of sodium benzoate, 8 parts of acetic anhydride, 8 parts of methyl orthosilicate, 5 parts of diaminodiazoline, 1.6 parts of linolenate, 7 parts of ethyl orthosilicate, 5 parts of lithium vanadate, Surfactant cetyl bromide 6 parts, water 60 parts.

[0026] The preparation method comprises the steps of:

[0027] 1) Add sodium bisulfite, titanyl nitrate, citric acid and vanadate into water, stir at 30-50°C for 10-30 minutes, and dissolve to obtain solution A;

[0028] 2) Mix epoxysilane, tartaric acid, sodium benzoate, acetic anhydride, methyl orthosilicate, diaminodiazoline, linolenic acid ester and ethyl orthosilicate, heat to 80~100℃, stir for 30~50min , cooled to room temperature to obtain sol...

Embodiment 3

[0031] An anti-corrosion chromium-free passivator for battery steel case, the components and the mass parts of each component are as follows: 8 parts of sodium bisulfite, 6 parts of titanium oxynitrate, 2 parts of epoxy silane, 5 parts of tartaric acid, citric acid 2 parts, 4 parts of sodium benzoate, 4 parts of acetic anhydride, 5 parts of methyl orthosilicate, 2 parts of diaminodiazoline, 0.6 parts of linolenate, 4 parts of ethyl orthosilicate, 3 parts of zinc vanadate, Surfactant cetyl bromide 3 parts, water 40 parts.

[0032] The preparation method comprises the steps of:

[0033] 1) Add sodium bisulfite, titanyl nitrate, citric acid and vanadate into water, stir at 40°C for 20 minutes, and dissolve to obtain solution A;

[0034] 2) Mix epoxysilane, tartaric acid, sodium benzoate, acetic anhydride, methyl orthosilicate, diaminodiazoline, linolenate and ethyl orthosilicate, heat to 90°C, stir for 40min, and cool to room temperature , to obtain solution B;

[0035] 3) Add...

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PUM

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Abstract

The invention discloses an anticorrosive chromium-free passivating agent for a battery steel shell and a preparation method of the anticorrosive chromium-free passivating agent for the battery steel shell. The anticorrosive chromium-free passivating agent is prepared from, by mass, 5-15 parts of sodium bisulfite, 5-10 parts of titanyl nitrate, 1-5 parts of epoxy silane, 3-11 parts of tartaric acid, 1-5 parts of citric acid, 2-8 parts of sodium benzoate, 2-8 parts of acetic anhydride, 4-8 parts of tetramethyl orthosilicate, 1-5 parts of diamido-di-imidole, 0.2-1.6 parts of linolenate, 3-7 parts of tetraethyl orthosilicate, 2-5 parts of vanadate, 2-6 parts of surfactant and 30-60 parts of water. The passivating agent can form a compact film structure on the surface of the battery steel shell, the surface of the steel shell is smooth and compact, porosity is remarkably reduced, the corrosion potential is increased, corrosion current is reduced, the potential range of an anodic passivation area is widened, the mass transfer resistance is remarkably increased, and the corrosion-resistant performance is remarkably superior to the corrosion-resistant performance of a current passivated steel shell.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment chemicals, and in particular relates to an anti-corrosion chromium-free passivator for battery steel shells and a preparation method thereof. Background technique [0002] There are three main methods for metal anti-corrosion: 1) Change the internal structure of the metal: for example, adding nickel, chromium, manganese and rare earth metals during the smelting process of steel to change the microstructure of steel, thereby improving its corrosion resistance. corrosion performance. 2) Covering the metal surface with a protective layer: for example, coating a layer of anti-rust paint on the metal surface, electroplating a layer of corrosion-resistant metal, or chemically covering the metal surface with a dense corrosion-resistant protective film, etc. 3) Electrochemical protection method: Because the single metal cannot obtain electrons, as long as the protected metal is used as th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/40
CPCC23C22/40C23C2222/20
Inventor 尤为
Owner 宜春新源电池科工贸有限公司
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