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Chrome-free metal deactivator

A passivating agent, chromium metal technology, applied in the direction of metal material coating process, etc., can solve the problems of non-explosive, non-flammable, etc., and achieve the effect of strong corrosion resistance and good film forming effect

Active Publication Date: 2013-11-27
泰州先进化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of this application is to overcome the deficiencies of the prior art, to provide a non-toxic, non-polluting, non-flammable, non-explosive chromium-free composite metal passivator, its corrosion resistance is close to the chromium passivator, and can eliminate Chromium Pollution Problems

Method used

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  • Chrome-free metal deactivator
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  • Chrome-free metal deactivator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A chromium-free metal passivator, comprising the following components, and the weight percentage of each component is:

[0035]

[0036] Add water to 100%.

[0037] Preparation method: Mix all ingredients evenly and dissolve together.

Embodiment 2

[0039] A chromium-free metal passivator, comprising the following components and the weight percentage of each component is:

[0040]

[0041] The balance is water.

[0042] The preparation method is the same as in Example 1.

Embodiment 3

[0044] A chromium-free metal passivator, comprising the following components and the weight percentage of each component is:

[0045]

[0046] The balance is water.

[0047] The preparation method is the same as in Example 1.

[0048] Salt spray test judgment standard: national standard GB6461, GB12335

[0049] Implementation experimental status rating factor Example 1 discoloration and light loss Grade C Example 2 no change Grade A Example 3 slight discoloration Class B

[0050] How to use: The preparation ratio is 1:5--1:10, that is, 1 part of chromium-free passivator is diluted with 5 parts to 10 parts of deionized water. Do not use tap water, let alone well water

[0051] Note: The surface temperature of galvanized sheet and other galvanized materials should be controlled below 45°C. When the temperature exceeds 50°C, the passivator may be decomposed and the corrosion resistance will be damaged. The passivation layer has c...

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Abstract

The invention discloses a chrome-free metal deactivator. The chrome-free metal deactivator comprises the following components by weight percentage: 5-8% of phosphoric acid, 3-7% of citric acid, 10-15% of sodium molybdate, 10-15% of PBTCA (2-phosphate-1,2,4-tricarboxylic acid butane), 10-15% of urotropin, 5-10% of phosphate ester, 3-5% of JFC-2 (2-octyl alcohol polyoxyethylene ether), and the balance of water. The deactivator is suitable for passivation technology of steel, alloy and the like, the decay resistance of the deactivator is approximate to that of a chrome passivant, the deactivator has no toxicity and is environment-friendly, has no chrome contamination problem, and has a simple formula and the raw materials are easy to get.

Description

technical field [0001] The invention relates to the technical field of metal passivators, in particular to a chromium-free metal passivator. Background technique [0002] Chromate passivation technology has been used as the main passivation technology for steel and alloys for a long period of time due to its excellent self-repairing effect of passivation film, wide range of applications, and cost advantages. However, the chromate passivating agent contains hexavalent chromium or trivalent chromium, which are highly toxic substances and carcinogenic, seriously affecting human health and causing environmental pollution. [0003] Chromium-free passivation technology has the advantages of non-toxic, harmless, environmentally friendly, high efficiency and low consumption, and has become the current mainstream research and development direction. Chromium-free passivation technology is mainly divided into three categories, namely inorganic passivation, organic passivation and comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/42
Inventor 陈佳冬
Owner 泰州先进化工有限公司
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