CN101629299B - Electroplating degreasing agent for secondary cold rolled material - Google Patents
Electroplating degreasing agent for secondary cold rolled material Download PDFInfo
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- CN101629299B CN101629299B CN2008100406185A CN200810040618A CN101629299B CN 101629299 B CN101629299 B CN 101629299B CN 2008100406185 A CN2008100406185 A CN 2008100406185A CN 200810040618 A CN200810040618 A CN 200810040618A CN 101629299 B CN101629299 B CN 101629299B
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Abstract
The invention relates to a metal degreasing agent, in particular to an electroplating degreasing agent for a secondary cold rolled material. The electroplating degreasing agent for the secondary cold rolled material comprises the following chemical components in percentage by weight: 20 to 25 percent of potassium hydroxide, 1 to 4 percent of potassium gluconate, 5 to 13 percent of organic polymer complexing agent, 3 to 5 percent of surfactant, and the balance of water. The organic polymer complexing agent is 9EO+10PO and the chemical name thereof is polyoxypropylene polyoxyethylene block copolymer. The surfactant is HAS and the chemical name thereof is hydroxylamine sulfate. The electroplating degreasing agent for the secondary cold rolled material has very strong moistening and stripping functions on dirt, and the stripped greasy dirt floats on the liquid surface, is easy to discharge and rinse; besides, the electroplating degreasing agent avoids the white spot problems and the tinning defects on a tin plate and reduces the roll marks defects.
Description
Technical field
The present invention relates to a kind of metal degreasing agent, in particular for the electroplating degreasing agent of secondary cold rolled material.
Background technology
The cleaning principle of electroplating degreasing agent mainly contains three kinds at present: emulsification, saponification and wetting.The electroplating degreasing agent prescription following (by weight percentage) of prior art secondary cold rolled material:
Sodium hydroxide 40～45%
Yellow soda ash 20～25%
Inorganic complexing agent (tripoly phosphate sodium STPP) 20～25%
Nonyl phenol 2～3%
Emulsifying agent (OP) 1～3%
It mainly is emulsification and saponification that this degreasing process cleans principle.Emulsifying effect is uniformly distributed in the aqueous solution oil droplet, forms mixed liquid.Nonyl phenol is a nonionic surface active agent, and its hydrophilic-oleophylic-equilibrium value HLB scope is respectively about 3～5 and about 13～15; Emulsifying agent (OP) is that the condenses of alkylphenol and oxyethane is the water miscibility organic solvent, in liquid phase fully can with miscible organic compound of water and composition thereof; Tripoly phosphate sodium STPP mainly plays effects such as complexing solubilising, lattice distortion and dispersion; Sodium hydroxide mainly plays saponification.
The grease that the grease-removing agent of this composition washes down belt steel surface mixes fully with water, and oleaginousness constantly rises in the scavenging solution use, and basicity constantly descends, and causes the later stage cleaning performance poor, and is easy to generate roll marks.This kind grease-removing agent is a solid in addition, in order to reach abundant dissolving, must slowly add and prepare scavenging solution in the entry, influences production efficiency.The grease-removing agent of this kind composition in use also a large amount of foams can occur.
Summary of the invention
The object of the present invention is to provide a kind of electroplating degreasing agent that is used for secondary cold rolled material, can reduce the oleaginousness of scavenging solution, keep basicity, effectively carry cleaning performance.
The present invention is achieved in that a kind of electroplating degreasing agent that is used for secondary cold rolled material, and its chemical ingredients is by weight percentage:
Potassium hydroxide 20%～25%
Potassium Gluconate 1%～4%
Organic polymer complexing agent 5%～13%
Tensio-active agent 3%～5%
All the other are water.
Described organic polymer complexing agent is 9EO+10PO, its chemistry polyoxyethylene polyoxypropylene segmented copolymer by name.
Described tensio-active agent is HAS, its chemistry oxammonium sulfate by name.
Tensio-active agent in this grease-removing agent (HAS) and organic polymer complexing agent (9EO+10PO) have very strong activation wetting capacity to the band steel, reduce by soaking into of physisorption layer being made it surface tension, simultaneously to the cutting action of the polar material of chemisorption layer, impel the decline of dirt sorptive force, can prevent that the emulsification of the dirt composition that separates from paying again.Reduce two effects: first is penetrant action, is impregnated into the promoter action in the close gap, and water content in oil advances the facilitating effects of (going out); Second is film formation effect, promptly forms protective membranes such as electronics two double-layers.
Soak between back belt steel surface and potassium hydroxide solution solid-liquid mutually angle much larger than the solid-liquid phase angle between belt steel surface and oil reservoir.Potassium Gluconate is the selectivity weighting agent in this prescription.Final grease-removing agent solution under action of turbulent flow, makes oil reservoir strip down from belt steel surface by strong wetting entering between belt steel surface and the oil reservoir.Greasy dirt after peeling off floats on the liquid level, and water insoluble solution is compared with emulsification with traditional saponification, and biggest advantage is exactly that the oil in the alkali lye is removed easily, can prevent secondary pollution and be convenient to wastewater treatment, has solved the problem that greasy dirt concentration constantly raises in the alkali lye.Potassium hydroxide and organic polymer complexing agent are easy to rinsing effect simultaneously in the prescription.
The present invention has following beneficial effect: the present invention is used for the electroplating degreasing agent of secondary cold rolled material, dirt is had very strong wetting and peel off effect, and the greasy dirt after peeling off floats on the liquid level, has slowed down the aging speed of tank liquor, and it is more easy that wastewater treatment also becomes.The rinsing of this grease-removing agent is easy in addition, has avoided the generation of hickie problem on the tin plate, has also avoided the zinc-plated defective that causes owing to rinsing is not good.This grease-removing agent is a liquid product in addition, avoids powder grease-removing agent dust problem in use, helps the clean and tidy of the healthy and site environment of field worker, and reinforcedly also becomes convenient.
Embodiment
Use after diluting 10 times when use at grease-removing agent of the present invention scene, total solid caustic soda content is about 3% in the working fluid.Concrete using method is as follows:
1, alkali cleaning work nest, circulation groove, pole plate are cleaned up.
2, earlier at the deionized water of 9 parts of alkali cleaning circulation groove addings, add 1 part grease-removing agent again.
3, the heated solution temperature continues heating to the 40-50 degree, and the ON cycle pump, beats partial circulating, and the control solution temperature is to the 65-75 degree, and is standby.
Wash next grease with the surperficial liquid that overflows about 0.5% in the rinse bath to discharge from the secondary cold-rolling raw sheet every day in the production process, replenishes new working fluid more according to the above ratio.
Embodiment 1:
Potassium hydroxide 25%
Potassium Gluconate 2%
Organic polymer complexing agent (9EO+10PO) 13%
Tensio-active agent (HAS) 4%
Water 56%
Oil mass and basicity changing conditions in the working fluid when table 1 embodiment 1 uses
| First day | Second day | The 3rd day | The 4th day | The 5th day | The 6th day | |
| Oleaginousness mg/l | ?334 | 312 | 287 | 266 | 274 | 266 |
| Basicity g/l | ?30.83 | 37.44 | 36.27 | 35.76 | 33.48 | 29.43 |
As can be seen from Table 1, wash next residual grease, constantly be not dissolved in the alkali lye, but in time obtain removing, and working fluid basicity keeps better unobvious decline by overflow from the secondary cold-rolling raw sheet.
Embodiment 2:
Potassium hydroxide 23%
Potassium Gluconate 4%
Organic polymer complexing agent (9EO+10PO) 8%
Tensio-active agent (HAS) 5%
Water 60%
The basicity of embodiment 2 working fluids: 31.65g/l.
Embodiment 3:
Potassium hydroxide 20%
Potassium Gluconate 2%
Organic polymer complexing agent (9EO+10PO) 5%
Tensio-active agent (HAS) 3%
Water 70%
The basicity of embodiment 3 working fluids: 28.76g/l.
Use clean-out system of the present invention (prescription of embodiment 1) back secondary cold rolled material (being the DR material) production efficiency and roll marks defective and historical data to contrast as following table 2:
Contrast before and after table 2 clean-out system of the present invention uses
| DR material output | Unit speed | Hour production capacity | The roll marks ratio of defects | |
| Historical data | 1500 tons/month | 160m/min | 10.8 ton/hour | 3.2％ |
| Use data | 1500 tons/month | 178m/min | 11.5 ton/hour | 0.08％ |
By last table 2 as seen, use that roll marks production efficiency improves behind the clean-out system of the present invention, the roll marks defective reduces greatly.
Claims (1)
1. an electroplating degreasing agent that is used for secondary cold rolled material is characterized in that, its chemical ingredients is by weight percentage:
Potassium hydroxide 20%～25%
Potassium Gluconate 1%～4%
Organic polymer complexing agent 5%～13%
Tensio-active agent 3%～5%
All the other are water;
Described organic polymer complexing agent is 9EO+10PO, its chemistry polyoxyethylene polyoxypropylene segmented copolymer by name;
Described tensio-active agent is HAS, its chemistry oxammonium sulfate by name.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100406185A CN101629299B (en) | 2008-07-16 | 2008-07-16 | Electroplating degreasing agent for secondary cold rolled material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100406185A CN101629299B (en) | 2008-07-16 | 2008-07-16 | Electroplating degreasing agent for secondary cold rolled material |
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| Publication Number | Publication Date |
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| CN101629299A CN101629299A (en) | 2010-01-20 |
| CN101629299B true CN101629299B (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100406185A Active CN101629299B (en) | 2008-07-16 | 2008-07-16 | Electroplating degreasing agent for secondary cold rolled material |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111850588A (en) * | 2020-08-18 | 2020-10-30 | 立邦涂料（重庆）化工有限公司 | Heavy oil degreasing agent for cold-rolled sheet and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5114607A (en) * | 1990-08-08 | 1992-05-19 | Betz Laboratories, Inc. | Low foaming alkaline cleaner comprising a surfactant mixture of an EO-PO-EO block copolymer and a PO-ZO-PO block copolymer |
| CN1715387A (en) * | 2004-06-30 | 2006-01-04 | 东友Fine-Chem株式会社 | Electronic parts cleaning solution |
| CN1726304A (en) * | 2002-12-13 | 2006-01-25 | 日本帕卡濑精株式会社 | Metal finishing treatment solution and surface treatment method |
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2008
- 2008-07-16 CN CN2008100406185A patent/CN101629299B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5114607A (en) * | 1990-08-08 | 1992-05-19 | Betz Laboratories, Inc. | Low foaming alkaline cleaner comprising a surfactant mixture of an EO-PO-EO block copolymer and a PO-ZO-PO block copolymer |
| CN1726304A (en) * | 2002-12-13 | 2006-01-25 | 日本帕卡濑精株式会社 | Metal finishing treatment solution and surface treatment method |
| CN1715387A (en) * | 2004-06-30 | 2006-01-04 | 东友Fine-Chem株式会社 | Electronic parts cleaning solution |
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| CN101629299A (en) | 2010-01-20 |
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