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Environment friendly metal surface treatment agent and application thereof

A metal surface treatment, environmentally friendly technology, applied in the direction of metal material coating process, etc., can solve the problems of environmental burden, phosphorus and heavy metal nickel pollution, increase the cost of wastewater treatment, etc., and achieve the effect of slow rust and low COD value.

Active Publication Date: 2018-06-22
NANJING KERUN LUBRICANTS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the existing phosphorus-free conversion coating technology has solved the pollution problem of phosphorus and heavy metal nickel to the environment, the chemical components of both technologies contain relatively high concentrations of nitrogen, which will still cause a certain burden on the environment.
The cost of wastewater treatment also increases as a result

Method used

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  • Environment friendly metal surface treatment agent and application thereof
  • Environment friendly metal surface treatment agent and application thereof
  • Environment friendly metal surface treatment agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Prepare the template:

[0033] A commercially available Q235 cold-rolled steel plate (produced by Shanghai Baosteel) with a specification of (170mm×100mm×0.8mm) was used as the metal model for implementation.

[0034] 2. Degreasing pretreatment:

[0035] Prepare degreasing solution according to mass percentage: 1% NaOH, 0.5% Na 2 CO 3, 0.1% EDTA, 1% NP-10, the balance is water. Soak the metal sample at 50°C for 3 minutes.

[0036] 3. Washing treatment after degreasing pretreatment:

[0037] Soak the degreased metal sample in tap water for 1 minute.

[0038] 4. Composite surface treatment agent treatment:

[0039] Prepare an environment-friendly metal surface treatment agent, using water as a solvent, and the composition of raw materials is as follows:

[0040]

[0041] During preparation, the components were dispersed in water and dissolved, and the pH value of the prepared composite surface treatment agent was adjusted to 4.50 with aqueous sodium bicarbona...

Embodiment 2

[0047] Prepare an environment-friendly metal surface treatment agent, using water as a solvent, the composition is as follows:

[0048]

[0049] During preparation, the components are dispersed in water for dissolution, and the pH value of the prepared composite surface treatment agent is adjusted to 4.80 by using aqueous sodium bicarbonate solution.

[0050] The test sample was obtained according to the process of Example 1, and the specific detection performance of the test sample is shown in Table 1.

Embodiment 3

[0052] Prepare an environment-friendly metal surface treatment agent, using water as a solvent, and the composition of raw materials is as follows:

[0053]

[0054]

[0055] During preparation, the components are dispersed in water for dissolution, and the pH value of the prepared composite surface treatment agent is adjusted to 4.50 by using aqueous sodium bicarbonate solution.

[0056] The test sample was obtained according to the process of Example 1, and the specific detection performance of the test sample is shown in Table 1.

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PUM

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Abstract

The invention discloses an environment friendly metal surface treatment agent and application thereof. The environment friendly metal surface treatment agent uses water as a solvent and contains 10 ppm-50000 ppm of a zirconium / titanium compound, 200 ppm-10000 ppm of an organic material, 20 ppm-1000 ppm of a complexing agent, 20 ppm-1000 ppm of a wetting assistant, 1 ppm-10000 ppm of a film formation accelerant and 1 ppm-200 ppm of an antirust agent. The non-phosphorus low-nitrogen before-coating environment friendly metal surface treatment agent is provided, main ingredients of the agent do not contain nitrogen, and meanwhile, a composite conversion film capable of improving the film corrosion resistance and the coating bonding capacity can be formed on the metal surface.

Description

technical field [0001] The invention relates to a surface treatment agent, in particular to a phosphorus-free and low-nitrogen environment-friendly metal surface treatment agent and its application. Background technique [0002] In order to ensure or improve the corrosion resistance and coating or plastic spraying effect of metal surfaces, it is usually necessary to chemically treat the surface of metal materials, such as steel materials, galvanized materials or aluminum materials. It is also necessary to form a pre-painting treatment film on the metal surface. This film layer needs to have good adhesion to the metal to be painted and the upper coating, and also needs to have good corrosion resistance. [0003] Phosphating technology is the most common in metal surface conversion coating technology. The main component of its agent is phosphate, which poses a great threat to the environment and operators. With the enhancement of people's awareness of environmental protectio...

Claims

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Application Information

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IPC IPC(8): C23C22/80C23F11/10
CPCC23C22/80C23C2222/20C23F11/10
Inventor 付海罗王娟陈光黄海威聂晓霖
Owner NANJING KERUN LUBRICANTS
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