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Water-soluble nickel protective agent as well as preparation method and use method thereof

A protective agent and water-soluble technology, applied in the field of metal anti-corrosion, can solve the problems of insufficient environmental protection and weak anti-corrosion effect, and achieve the effects of prolonging the service life, low production cost, and preventing oxidation and discoloration.

Inactive Publication Date: 2011-02-16
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the disadvantages of weak anti-corrosion effect or insufficient environmental protection in the prior art, the present invention provides a water-soluble nickel protective agent, which meets the requirements of environmental protection and has good corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: prepare 100 kilograms of nickel protective agent

[0031] The proportioning of each component is carried out according to the following ratio: 0.4 kg of benzotriazole, 0.6 kg of 2-mercaptobenzothiazole, 19 kg of ethanol, 4 kg of sodium lauryl sulfate, and a balance of 76 kg of water.

[0032] The preparation process of this embodiment is:

[0033] 1. Dissolve the film-forming substance in the co-surfactant, and stir at a speed of 500 rpm at a temperature of 70°C for 20 minutes in an airtight manner to prepare a solution;

[0034] 2. Dissolve the surfactant in water, and stir in airtight at 400 rpm for 15 minutes at a temperature of 40°C to prepare solution B;

[0035] 3. Slowly add solution A to solution B and stir in airtight at 600 rpm, and continue stirring for 15 minutes after the addition process is completed;

[0036] 4. After cooling to room temperature, put into cans.

[0037] The usage method of this embodiment is:

[0038] First heat the wate...

Embodiment 2

[0039] Embodiment 2: prepare 100 kilograms of nickel protective agent

[0040] Carry out the proportioning ratio of each component according to the following ratio: 0.6 kilogram of 5-phenyltetrazolium, 0.3 kilogram of 2-mercaptoimidazole, 0.6 kilogram of 2-amino-5-mercapto-1,3,4-thiadiazole, normal 34 kilograms of propanols, 9 kilograms of sodium dodecylbenzenesulfonate, and the balance is 55.5 kilograms of water.

[0041] The preparation process of this embodiment is:

[0042] 1. Dissolve the film-forming substance in the co-surfactant, and stir at a speed of 500 rpm for 30 minutes at a temperature of 70°C to prepare a solution;

[0043] 2. Dissolve the surfactant in water, and stir in airtight at 50°C at a speed of 400 rpm for 20 minutes to prepare B solution;

[0044] 3. Slowly add solution A to solution B and stir in airtight at 600 rpm, and continue stirring for 15 minutes after the addition process is completed;

[0045] 4. After cooling to room temperature, put into ...

Embodiment 3

[0048] Embodiment 3: prepare 100 kilograms of nickel protection agent

[0049] Carry out the proportioning of each component according to the following ratio: 0.3 kilogram of 1-phenyl-5-mercaptotetrazolium, 0.2 kilogram of 2-mercaptobenzimidazole, 14 kilograms of n-butanol, Tween-805 kilogram, surplus is 80.5 kg of water.

[0050] The preparation process of this embodiment is:

[0051] 1. Dissolve the film-forming substance in the co-surfactant, and stir at a speed of 500 rpm at a temperature of 60°C for 20 minutes in an airtight manner to prepare a solution;

[0052] 2. Dissolve the surfactant in water, and stir in airtight at 50°C at a speed of 400 rpm for 15 minutes to prepare B solution;

[0053] 3. Slowly add solution A to solution B and stir in airtight at 600 rpm, and continue stirring for 10 minutes after the addition process is completed;

[0054] 4. After cooling to room temperature, put into cans.

[0055] The usage method of this embodiment is:

[0056] First ...

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PUM

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Abstract

The invention discloses a water-soluble nickel protective agent as well as a preparation method and a use method thereof. The preparation method comprises the steps of: dissolving 0.5-1.5 percent by weight of a film forming substance into 14-34 percent of cosurfactant to prepare a solution A; dissolving 4-9 percent of surfactant into the balance of water to prepare a solution B; and adding the solution A into the solution B for micro-emulsification, and cooling to obtain the water-soluble nickel protective agent. The use method comprises the steps of: heating the water-soluble nickel protective agent to 60-80 DEG C, placing a clean and dry workpiece into the heated the water-soluble nickel protective agent, dipping for 2-10min at 60-80 DEG C, taking out, airing, packing and warehousing. The water-soluble nickel protective agent has the advantages of strong corrosion resistance, stable electric property, safety, environmental-friendliness and low cost.

Description

technical field [0001] The invention relates to the technical field of metal anti-corrosion, in particular to an anti-corrosion agent for preventing nickel or nickel-plated parts from being oxidized, discolored and corroded. Background technique [0002] Nickel is easy to form oxides and sulfides in the industrial atmosphere, and the surface is often yellow. The discolored nickel layer not only loses the metallic luster of nickel, but also increases the contact resistance of the surface and reduces the bonding force between nickel and other surface coatings. , causing peeling of the surface coating, while nickel oxides and sulfides will also reduce the welding performance of nickel. In the manufacturing process of many single-sided printed boards, nickel plating is sometimes used as a solderable surface coating. Because it will corrode and discolor, and often cause false soldering, the surface often needs to be protected by a layer of tin or gold. layer, which not only incr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/00
Inventor 李博李佳
Owner NORTHWESTERN POLYTECHNICAL UNIV
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