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Non-phosphorus degreasant and preparation method thereof

A degreasing agent and surfactant technology, applied in the field of phosphorus-free degreasing agent and its preparation, can solve the problems of lack of market competitiveness, poor anti-rust performance, high production cost, etc., and achieve low production cost, small environmental pollution, degreasing short time effect

Active Publication Date: 2016-12-07
ANHUI HONGQIAO METAL MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current degreasing agent for hot-dip galvanizing line has disadvantages such as poor anti-corrosion, anti-rust performance, and generation of air bubbles, and its production cost is also high, so it does not have market competitiveness

Method used

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  • Non-phosphorus degreasant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A kind of phosphorus-free degreasing agent, is made up of the raw material of following parts by weight:

[0046] Alpha-olefin sulfonate: 2.8g / L

[0047] Aromatic amine oxide cationic surfactant: 4.2g / L

[0048] Lauric acid alkylolamide: 2.8g / L

[0049] Carboxymethyl cellulose: 8.6g / L

[0050] Polyvinyl alcohol: 8.0g / L

[0051] 500-1000 mesh activated sludge: 8.0g / L

[0052] Citric acid: 1.5g / L

[0053] Triethylenetetramine: 1.5g / L

[0054] The rest is water.

[0055] Its preparation method comprises the following steps:

[0056] (1) Measure each component raw material respectively according to the formula;

[0057] (2) Disperse carboxymethylcellulose and triethylenetetramine in water accounting for 30% of the total amount, add citric acid, α-olefin sulfonate, aromatic amine oxide cationic surfactant and the remainder of water in sequence, Heat to 50-70°C while stirring, keep the temperature for 2-5min, cool to room temperature naturally, add activated sludge, ...

Embodiment 2

[0059] A kind of phosphorus-free degreasing agent, is made up of the raw material of following parts by weight:

[0060] Alpha-olefin sulfonate: 2.0g / L

[0061] Aromatic amine oxide cationic surfactant: 6.0g / L

[0062] Lauric Alkyl Alcoholamide: 1.2g / L

[0063] Carboxymethyl cellulose: 12.0g / L

[0064] Polyvinyl alcohol: 6.0g / L

[0065] 500-1000 mesh sludge: 14.0g / L

[0066] Citric acid: 0.5g / L

[0067] Triethylenetetramine: 4.0g / L

[0068] The rest is water.

[0069] Its preparation method is with embodiment 1.

Embodiment 3

[0071] A kind of phosphorus-free degreasing agent, is made up of the raw material of following parts by weight:

[0072] Alpha-olefin sulfonate: 3.6g / L

[0073] Aromatic amine oxide cationic surfactant: 5.4g / L

[0074] Lauric Alkyl Alcoholamide: 4.2g / L

[0075] Carboxymethyl cellulose: 10.5g / L

[0076] Polyvinyl alcohol: 10.0g / L

[0077] 500-1000 mesh activated sludge: 12.0g / L

[0078] Citric acid: 3.0g / L

[0079] Triethylenetetramine: 3.0g / L

[0080] The rest is water.

[0081] Its preparation method is with embodiment 1.

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Abstract

The invention relates to the technical field of metal degreasing, in particular relates to a non-phosphorus degreasant and a preparation method thereof. The degreasant comprises, by weight, 2.0-4.5g / L of a-olefin sulfonate, 3.5-6.0g / L of aromatic amine oxide cationic surfactant, 1.2-4.6g / L of lauric acid alkyl alcohol amine, 8.0-12.0g / L of carboxymethyl cellulose, 6.0-11.0g / L of polyvinyl alcohol, 6.0-14.0g / L of activated sludge, 0.5-3.5g / L of citric acid, 1.0-4.0g / L of Triethylenetetramine, and the balance water. The non-phosphorus degreasant provided by the invention is small in environmental pollution, safe and convenient to use, high in degreasing rate, simple in the preparation method, and low in working intensity.

Description

technical field [0001] The invention relates to the technical field of metal degreasing, in particular to a phosphorus-free degreasing agent and a preparation method thereof. Background technique [0002] Rolled steel galvanized sheet has good corrosion resistance, and has been more and more widely used in industries such as automobiles, machinery, and home appliances. Since there is a mixture of grease and iron powder remaining on the surface of the hot-rolled coil, it is very harmful to the further processing of the subsequent coating. It must be removed through the degreasing process, otherwise the quality of galvanizing cannot be guaranteed. Therefore, in order to improve the output and quality of galvanized products, reduce the iron content in the zinc pot and the hydrogen consumption in the furnace, the degreasing treatment before galvanizing is particularly critical. [0003] The current degreasing agents for hot-dip galvanizing lines have disadvantages such as poor ...

Claims

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Application Information

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IPC IPC(8): C23G1/08C23C2/02
CPCC23C2/02C23G1/088
Inventor 余昌国余程刚
Owner ANHUI HONGQIAO METAL MFG
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