Cleaning agent application

A cleaning agent and cleaning liquid technology, applied in the field of cleaning agent production, can solve the problems of lack of market competitiveness, eutrophication of water body, toxic and side effects, etc., and achieve the effect of good application prospects, strong continuous action ability, and low dosage

Inactive Publication Date: 2010-02-24
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently commonly used cleaning agents mainly include inorganic corrosion inhibitor compounds containing toxic chromate and some organic phosphorus corrosion inhibitor compounds, the discharge of which may cause eutrophication of water bodies
Most of the existing cleaning agents in the same field have toxic and side effects and do not have market competitiveness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. Preparation of cleaning agent: First, take 100L of dilute hydrochloric acid with a concentration of 0.10M as cleaning solution, and then add 1g of cleaning agent for use.

[0016] 2. Cleaning: immerse the zinc alloy coating material in the cleaning solution for 2h at room temperature.

[0017] 3. Through experimental tests, the highest corrosion inhibition efficiency of acridine on metals is 95%, showing that it is an efficient cleaning agent.

[0018] The present invention carries out the coupon weight loss test according to GB10124-88 "Metal Material Laboratory Uniform Corrosion Gold Immersion Test Method". The working principle of the present invention is that: acridine is a heterocyclic compound with a dibenzopyridine structure, which contains atoms or groups of atoms such as heterocycles and nitrogen in the molecule, and can be effectively adsorbed on hot-dip galvanizing, zinc-aluminum alloy and zinc-aluminum alloy coatings The steel surface plays a role of corrosion ...

Embodiment 2

[0020] 1. Cleaning and preparation of cleaning agent: First, take 100L of diluted hydrochloric acid with a concentration of 0.50M as the cleaning solution, and then add 50g of the cleaning agent for use.

[0021] 2. Cleaning: Immerse the zinc alloy coating material in the cleaning solution for 3h at room temperature.

[0022] 3. Through experimental tests, the highest corrosion inhibition efficiency of acridine on metals is 97%, showing that it is an efficient cleaning agent.

Embodiment 3

[0024] 1. Cleaning and preparation of cleaning agent: First, take 100L of dilute sulfuric acid with a concentration of 0.80M as cleaning solution, and then add 100g of cleaning agent for use.

[0025] 2. Cleaning: immerse the zinc alloy coating material in the cleaning solution for 2h at room temperature.

[0026] 3. Through experimental tests, the highest corrosion inhibition efficiency of acridine on metals is 96%, showing that it is an efficient cleaning agent.

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PUM

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Abstract

The invention discloses the green cleaning agent and application. It can be used to clean coated steel. The cleaning fluids are dilute hydrochloric acid or dilute sulphuric acid, whose concentration is 0.10-1.0mol / L, 0.010g-2.0g cleaning agent is added per liter cleaning fluid, and the coated steel is immersed for 15min-3hours. The invention has the advantages of low price, low consumption, high efficiency and strong continuous action ability. The invention has nontoxic for environment and biology, so it has wide foreground.

Description

Technical field [0001] The invention relates to the technical field of cleaning agent production, in particular to a green cleaning agent and its application. Background technique [0002] Hot-dip galvanized, zinc-aluminum alloy and aluminum-zinc alloy coated steels are more and more widely used. In the process of product processing and application, dilute sulfuric acid or dilute hydrochloric acid is often used for surface cleaning to remove oxide films or corrosion products on the surface. To avoid excessive consumption of metal or acid in the pickling process and to prevent harmful corrosion, adding a corrosion inhibitor to the acid is an effective means. [0003] At present, the commonly used cleaning agents mainly include inorganic corrosion inhibitors containing toxic chromate, and some organic phosphorus corrosion inhibitors, whose discharge may cause eutrophication of water bodies. Most of the existing cleaning agents in the same field have toxic side effects and do not hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/00
Inventor 鞠虹李焰马瑛
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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