Anti-rust treating agent for nickel-plated battery steel shell and using method thereof

A battery steel shell, anti-rust treatment technology, applied in the direction of metal material coating process, etc., to achieve the effect of reducing processing time, good corrosion resistance, and enhancing anti-corrosion performance

Active Publication Date: 2011-04-06
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology uses different chemical agents like nitrates, persulfonitrites, dichromides, sulfites, oxygen bleachers (bleaching powder), etc., along with other substances like acids/ bases, solvents, pH adjustors, stabilizers, antioxidants, polymer resins, plastic materials, rubbers, lubricating oil, metal surfaces, water vapor, bacteria, fungi, algae, seaweed, plants, animals, tissues, cells, microorganisms, yeast spores, molds, wires, cables, sensing devices, batteries, solar panels, electrical equipment, electronic components, circuit boards for use during manufacturing processes. These treatments help improve their performance by improving its ability to form films quickly without harmful environmental impacts.

Problems solved by technology

This patents discusses different methods used for treating metal surfaces without causing damage from environmental concerns like hexavalence chrome (hex) emissions. One approach involves applying a special type of chemical called dichloroarsene onto the metal surface before forming tin layers. Another option uses chromates instead of chrome acid. Additionally, another alternative solution involving adding certain substances can improve its effectiveness at lower temperatures while also being less harmful towards human health compared to previous techniques.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Use the antirust agent of the present invention to prepare an antirust film on the surface of a pre-plated battery steel case:

[0050] a. Chemically degrease the steel shell of the battery, the degreasing liquid is 70g / L NaOH, 40g / L NaOH 2 CO 3 , 25g / L Na 3 PO 4 , 10g / L of Na 2 SiO 3 mixture. Soak the steel case of the battery in the degreasing solution and heat it to 80-90°C, take it out after 5-10 minutes, and observe whether there are small water droplets on the surface during washing, if so, continue to degrease. After degreasing, rinse with tap water and rinse with deionized water.

[0051] b. Immerse the battery steel case treated in step a in an activation solution of 1-2% oxalic acid, treat at room temperature for 1-2 minutes, and rinse with deionized water after the reaction is completed.

[0052] c. placing the battery steel case treated in step b in the antirust agent of the present invention, the composition of the antirust agent is 0.5% of phytic ac...

Embodiment 2

[0056] After the same pretreatment as in Example 1, the battery steel case is placed in the treatment agent of the present invention, and the composition of the treatment agent is 1.0% of phytic acid, 1.0% of sodium tungstate, 0.2% of sodium chlorate, and 0.2% of sodium citrate , benzotriazole 0.2%, sodium dodecylbenzene sulfonate 0.05%, polyvinyl alcohol 0.5%, the rest is water, adjust the pH value to 5 with triethanolamine, the treatment temperature is 40 ° C, and the treatment time is 10 minutes. A layer of colorless and transparent corrosion-resistant film is formed on the surface of the battery steel case treated above.

[0057] The steel case of the battery treated with the formula of this example was subjected to a high temperature and high humidity test. After 10 days of high temperature and high humidity test, the corrosion resistance of this example reached level 9.

Embodiment 3

[0059] After the same pretreatment of the steel case of the battery as in Example 1, place it in the treatment agent of the present invention, the composition of the treatment agent is phytic acid 1.5%, sodium molybdate 0.5%, sodium tungstate 0.5%, sodium nitrate 0.2%, Sodium tartrate 0.2%, rosin imidazoline 0.2%, sodium dodecylbenzenesulfonate 0.05%, polyvinyl alcohol 1.0%, the rest is water, adjust the pH value to 5 with triethanolamine, the treatment temperature is 40°C, and the treatment time is 20 minute. A layer of colorless and transparent corrosion-resistant film is formed on the surface of the battery steel case treated above.

[0060] The steel case of the battery treated with the formula of this example was subjected to a high temperature and high humidity test. After 10 days of high temperature and high humidity test, the corrosion resistance of this example reached level 9.

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PUM

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Abstract

The invention relates to an anti-rust treating agent for a nickel-plated battery steel shell and a using method thereof. The formula of the agent mainly comprises the following components in percentage by weight: 0.5 to 10 percent of phytic acid, 0.5 to 10 percent of oxidant, 0.1 to 5 percent of auxiliary oxidant, 0.1 to 2 percent of complexing agent, 0.1 to 2 percent of corrosion inhibitor, 0.05 to 0.3 percent of wetting agent, 0.05 to 2 percent of pH conditioning agent and the balance of water. 0.1 to 1 percent of polyvinyl alcohol can also be added so as to enhance the film forming uniformity and compactness of the treating agent. The treating agent has high dispersing capability, infiltration capacity and enclosing capability and blocks micro-pores on the surface of a barrel nickel-plated battery shell and cracks on the surface of a pre-nickel-plated battery shell so as to prevent oxygen and other media from corroding the battery shell and enhance the resistance of the shell to severe environments such as salt mist, dampness, molds and the like. A film layer has high adhesion, uniformity and compactness and does not affect electrical conductivity. The invention also discloses a method for performing anti-rust treatment on the battery shell by using the treating agent. The agent has a simple process and low cost, is convenient to use and non-corrosive and does not cause environmental pollution.

Description

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Claims

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Application Information

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Owner XIANGTAN UNIV
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