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Metal surface treatment agent

A metal surface treatment and surfactant technology, applied in the field of chemical surface treatment of metal materials, can solve the problems of heavy workload, many procedures, complex preparation process, etc., to achieve safe production and use, simple preparation process, and no pollution environmental effects

Inactive Publication Date: 2006-06-14
王开平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned existing technologies all have quite good degreasing, rust removing and antirust effects, but they must be strongly acidic (pH value ≤ 1.5), and must be rinsed with a large amount of fresh water after use. The procedures are many and complicated, and the workload is large; At the same time, the preparation process of this kind of metal surface treatment agent is also quite complicated. The pollution of those raw materials to the environment and the harm to the human body need to be hard to prevent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The invention relates to the preparation of a metal degreasing, derusting and antirusting agent.

[0028] The types and proportions of the raw materials used are: 9.0% of triethanolamine, 5.0% of citric acid, 0.8% of ammonium chloride, 0.1% of sodium chloride, 1.0% of EDTA, 0.5% of NP-10, and 83.6% of water . The preparation process steps are as follows: (1) Ammonia or amine and organic acid are reacted in a reaction kettle at 90-110°C for 20-60 minutes under stirring to become a viscous liquid; the pH value is measured below 7, adjusted with triethanolamine The pH reaches 7~8; (2) add water to make it dissolve, and the amount of water is a partial amount, so as to achieve the dissolution; (3) under stirring, sequentially mix ammonium chloride, sodium chloride, EDTA, NP-10 and remaining Add the amount of water, mix well and serve.

[0029] The product is transparent or translucent, light yellow, viscous liquid with a pH value of 7~8.

Embodiment 2

[0031] A kind of trade mark is the preparation of metal degreasing, derusting and rust preventing agent of DI-96.

[0032] The types and proportions of raw materials used are: 18.0% of triethanolamine, 10.0% of citric acid, 2.0% of ammonium chloride, 1.0% of EDTA, 0.5% of NP-10 and 68.5% of water. Its preparation process steps are with embodiment 1. The product is transparent or translucent, light yellow, viscous liquid with a pH value of 7~8.

Embodiment 3

[0034] Preparation of metal degreasing, rust removal and antirust agents.

[0035] The types and proportions of raw materials used are: 3.0% ammonia (25-28%), 2.5% hydrazine, 8.0% citric acid, 1.5% ammonium chloride, 1.0% EDTA, 0.5% NP-10, Water is 83.5%. Its preparation process steps are with embodiment 1. The product is transparent or translucent, light yellow, viscous liquid with a pH value of 7~8.

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PUM

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Abstract

The invention relates to a deoiling, derusting and rust preventing metal surface treating compound. It is made up of ammonia or amine, organic acid, auxiliary agent, surface active agent, chelating agent. Its pH value is 7-8. The organic acid belongs to food, participating reaction, and has no waste acid and water after using. The treated metal surface appears virgin metal natural color. It will not corrode the metal. And the í‹hydrogen embrittlementíŒ will never happen.

Description

technical field [0001] The invention relates to a chemical method for surface treatment of metal materials, which can remove oil, rust and prevent rust while cleaning. Background technique [0002] The surface of metal materials is often treated before use; equipment (tanks, tanks, kettles, vessels, pipes, etc.) made of metal materials need to be cleaned during or after use, mostly for degreasing, rust removal and anti-rust. The traditional pickling has been eliminated because it is too corrosive, and the metal is corroded in addition to the rust. In recent years, the surface treatment agent for metal materials has developed rapidly, and there are many varieties: for example, ZL86107238 is composed of aluminum powder, alkali, hexamethylenetetramine, surfactant, ethylene oxide, water and phosphoric acid, and its pH is 1.5. It is best to wash at 50~80°C and rinse with 95°C water. Application number is the patent of 93101370, and its technical scheme is to form with phosphor...

Claims

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Application Information

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IPC IPC(8): C23G1/02
Inventor 王开平
Owner 王开平
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