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Metal cleaner

A metal cleaning agent and stabilizer technology, applied in the field of metal cleaning agents, can solve the problems of unstable properties of ethers, easy to fail, unsafe production process, etc., and achieve the effects of good rust removal effect, convenient use and product safety.

Inactive Publication Date: 2012-09-19
ZHENJIANG XINTAI CHEM MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In Chinese Patent No. CN86107238A, a kind of oil and rust remover is disclosed, which consists of aluminum powder, sodium hydroxide, hexamethylenetetramine, polyoxyethylene fatty alcohol ether, ethylene oxide, water, Phosphoric acid is made according to a certain ratio. Although this kind of degreasing agent has high efficiency and short production cycle, but because ethylene oxide is unstable and toxic, the production process is unsafe and the pollution to the environment is serious. In addition, its production cost is high
The patent No. is that CN1004429A also discloses a kind of derusting passivation agent, and its composition is that phosphoric acid, zinc dihydrogen phosphate, oxalic acid, zinc nitrate, polyethylene glycol octyl alkyl ether, water are mixed according to a certain proportion, but Due to the unstable properties of ethers, the storage time of the product is short and it is easy to fail
At the same time, the rust removal effect is not very ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] This specific embodiment takes the following technical scheme: its formula composition ratio is: hydrochloric acid 20%, stabilizer 4%, reducing agent 2%, synergist 2%, chelating agent 2%, corrosion inhibitor 2%, water 68% .

[0022] The stabilizer is titanium dioxide.

[0023] The synergist is gluconic acid.

[0024] The corrosion inhibitor is hexamethylenetetramine.

[0025] The reducing agent is sodium thiosulfate, which acts to activate the outer layer of the oxide skin, and convert the high-valent metal oxides and high-valent iron salts that are difficult to react in the outer layer of the iron oxide skin into low-valent metal oxides that are easily soluble in acids. Low-priced iron salts, favorable for Fe 3 o 4 and Fe 2 o 3 dissolution and removal.

[0026] The chelating agent is ethylene glycol, and its function is to maintain the stability of the acid solution, prolong the service life of the acid solution, and at the same time promote the dissolution of t...

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PUM

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Abstract

The invention discloses a metal cleaner, which relates to the field of chemical articles. The compositional ratio of a formula of the metal cleaner is as follows: 16 percent to 20 percent of hydrochloric acid, 2 percent to 4 percent of stabilizer, 1 percent to 2 percent of reducer, 1 percent to 2 percent of synergist, 1 percent to 2 percent of chelator, 1 percent to 2 percent of corrosion inhibitor and 60 percent to 70 percent of water. The metal cleaner has the advantages of good rust removal effect, high speed, low cost, convenience in use, non-ignition, non-explosion, no pollution to the environment, no irritation or damage to human bodies or metal, safety, non-toxicity and no volatilization.

Description

Technical field: [0001] The invention relates to the field of chemicals, in particular to a metal cleaning agent. Background technique: [0002] The rust on the metal surface is a very complex system. Under different oxidation conditions, its composition is very different, and the surface of the metal material must be treated before coating such as electroplating, spraying, and immersion plating, that is, to remove rust. Grease, impurities and rust layers on its surface. There are basically two types of rust removal methods at present, one is a mechanical method, and the other is a chemical method, but the mechanical method cannot completely eliminate the rust because it needs to be scraped with a knife or a metal brush, and requires a lot of labor. [0003] At present, there are many kinds of chemical rust removers for metal materials at home and abroad, and they are all made by directly using derivatives of inorganic acids or ammonia as the main material and adding auxili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/06C23G1/08
Inventor 李明双
Owner ZHENJIANG XINTAI CHEM MATERIAL
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