CN104962896B - A kind of Zinc phosphating solution additive and its application method - Google Patents
A kind of Zinc phosphating solution additive and its application method Download PDFInfo
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- CN104962896B CN104962896B CN201510387197.3A CN201510387197A CN104962896B CN 104962896 B CN104962896 B CN 104962896B CN 201510387197 A CN201510387197 A CN 201510387197A CN 104962896 B CN104962896 B CN 104962896B
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Abstract
The present invention provides a kind of Zinc phosphating solution additive and its application method, belongs to industrial phosphating solution field.The phosphatization solution additive includes inorganic accelerator, organic accelerator, part, buffer and surfactant, and wherein inorganic accelerator is zinc nitrite, NaClO3And H2O2；Organic accelerator is tartrate, guanidine nitrate and nitrobenzene-sulfonic acid salt；Part is organic carboxylate；Surfactant is bay dipropionic acid sodium and zinc dihydrogen phosphate.The Zinc phosphating solution additive of the present invention is suitable to the preparation of Low-Temperature Phosphate Liquid, and organic accelerator and inorganic accelerator are used cooperatively, and film forming speed is fast；Part is complexed with metal cation, makes crystal grain refinement, while reduces phosphating solution sediment, ensures the quality of phosphating coat, even film layer is fine and smooth, and buffer and surfactant make phosphating solution have preferable corrosion resistance, strengthen the adhesive force of each metal parts and coating.The model that has a wide range of application of the additive, cost is low, easy to use, energy-conserving and environment-protective, is advantageous to industrialized production.
Description
Technical field
The invention belongs to industrial phosphating solution field, and in particular to a kind of Zinc phosphating solution additive and its application method.
Background technology
One of the core technology of phosphatization as Coating Pretreatment, is widely used in the industries such as automobile, household electrical appliances, machinery, military project.
The adhesive force of coating, corrosion resistance and barrier propterty can be significantly improved by adding certain auxiliary agent into phosphating solution,
Domestic phosphorization technology common problem is at present：Phosphatization temperature is high, phosphating solution service life is short, washing difficulty
The problems such as greatly and causing water pollution, not only bring burden to environmental improvement but also consume the resources such as substantial amounts of water, phosphate.
Therefore the developing direction of phosphorization technology, mainly improve quality and reduce pollution, energy-conservation, asepsis environment-protecting, be further cleaning phosphorus
Change, phosphating solution should be reasonable with saving material and the energy, function, and product in use and after use be not good for by harmful to human
The characteristics of health and destruction ecological environment.
The content of the invention
For overcome the deficiencies in the prior art, object of the present invention is to provide one kind to be suitable to low temperature phosphor, and sediment is few, into
The fireballing Zinc phosphating solution additive of film, the model that has a wide range of application of the additive, cost is low, easy to use, energy-conserving and environment-protective.
In order to achieve the above object, the present invention provides following technical scheme：A kind of Zinc phosphating solution additive, described adds
Agent is added to include inorganic accelerator, organic accelerator, part, buffer and surfactant, wherein inorganic accelerator is nitrous acid
Zinc, NaClO3And H2O2；Organic accelerator is tartrate, guanidine nitrate and nitrobenzene-sulfonic acid salt；Part is organic carboxylate；Table
Face activating agent is bay dipropionic acid sodium and zinc dihydrogen phosphate；
Described tartrate is one kind in sodium potassium tartrate tetrahydrate and sodium tartrate；
Described nitrobenzene-sulfonic acid salt is sodium salt or sylvite；
Described organic carboxylate refers to EDTA.
Preferably, described additive each component is calculated by weight as：
The application method using above-mentioned Zinc phosphating solution additive is also claimed in the present invention simultaneously, first by the master of phosphating solution
Salt is blunged uniformly, is added nitric acid or phosphoric acid dissolving, is then sequentially added appropriate zinc nitrite, H2O2、NaClO3Side edged
Stirring, sequentially adds tartrate, guanidine nitrate and nitrobenzene-sulfonic acid salt, treats that the temperature of phosphating solution is down to room temperature, adds organic
Carboxylate, bay dipropionic acid sodium and zinc dihydrogen phosphate, to being completely dissolved, adjustment pH value is 2~4 for stirring.
Inorganic accelerator zinc nitrite and H2O2The Fe in solution can be aoxidized2+Ion, caused H in oxidizing process2Again with
NaClO3Reaction completely, can be avoided due to H2It is excessive to be detained metal surface, the progress of Fe dissolving reactions is hindered, accelerates phosphatization speed
Degree.Sodium potassium tartrate tetrahydrate, guanidine nitrate and nitrobenzene-sulfonic acid salt compounding, declining phosphating solution temperature makes it meet wanting for Low-Temperature Phosphate Liquid
Ask, a small amount of EDTA can be with the Fe in phosphating solution2+Ion coordination, stable meltable complex is formed, reduce the heavy of phosphating solution
Slag, bay dipropionic acid sodium are effective inhibition film forming agents as surfactant, by adsorbing in metal/solution interface
On, solution layer is formed, insoluble phosphating coat is generated under the collective effect of dihydric phosphate and oxygen, and the phosphating solution can be again
It is raw, energy-conserving and environment-protective.
Compared with prior art, Zinc phosphating solution additive of the invention is suitable to the preparation of Low-Temperature Phosphate Liquid, organic promotion
Agent and inorganic accelerator are used cooperatively, and film forming speed is fast；Part is complexed with metal cation, makes crystal grain refinement, while reduce phosphorus
Change liquid sediment, ensure the quality of phosphating coat, even film layer is fine and smooth, and buffer and surfactant make phosphating solution with preferably resistance to
Corrosion, strengthen the adhesive force of each metal parts and coating.The model that has a wide range of application of the additive, cost is low, easy to use, energy-conservation
Environmental protection, be advantageous to industrialized production.
Embodiment
Present disclosure is described in detail below by embodiment.
Embodiment 1
(1) component of Zinc phosphating solution additive is：
(2) phosphating solution is prepared：
First the main salt of phosphating solution is blunged uniformly, nitric acid or phosphoric acid dissolving is added, then sequentially adds appropriate Asia
Zinc nitrate, H2O2、NaClO3It is stirring while adding, tartrate, guanidine nitrate and nitrobenzene-sulfonic acid salt are sequentially added, treats phosphating solution
Temperature be down to room temperature, add organic carboxylate, bay dipropionic acid sodium and zinc dihydrogen phosphate, stirring to being completely dissolved,
It is 2~4 to adjust pH value.
(3) it is surface-treated：
Metal after degreasing, washing, derusting, table mediate reason is put into the phosphating solution in step (2), 35~45
Phosphatization 6~8 minutes at DEG C, generate uniform grey zinc phosphating film.
Embodiment 2
(1) component of Zinc phosphating solution additive is：
(2) phosphating solution is prepared：
First the main salt of phosphating solution is blunged uniformly, nitric acid or phosphoric acid dissolving is added, then sequentially adds appropriate Asia
Zinc nitrate, H2O2、NaClO3It is stirring while adding, tartrate, guanidine nitrate and nitrobenzene-sulfonic acid salt are sequentially added, treats phosphating solution
Temperature be down to room temperature, add organic carboxylate, bay dipropionic acid sodium and zinc dihydrogen phosphate, stirring to being completely dissolved,
It is 2~4 to adjust pH value.
(3) it is surface-treated：
Metal after degreasing, washing, derusting, table mediate reason is put into the phosphating solution in step (2), 35~45
Phosphatization 6~8 minutes at DEG C, generate uniform grey zinc phosphating film.
Embodiment 3
(1) component of Zinc phosphating solution additive is：
(2) phosphating solution is prepared：
First the main salt of phosphating solution is blunged uniformly, nitric acid or phosphoric acid dissolving is added, then sequentially adds appropriate Asia
Zinc nitrate, H2O2、NaClO3It is stirring while adding, tartrate, guanidine nitrate and nitrobenzene-sulfonic acid salt are sequentially added, treats phosphating solution
Temperature be down to room temperature, add organic carboxylate, bay dipropionic acid sodium and zinc dihydrogen phosphate, stirring to being completely dissolved,
It is 2~4 to adjust pH value.
(3) it is surface-treated：
Metal after degreasing, washing, derusting, table mediate reason is put into the phosphating solution in step (2), 35~45
Phosphatization 6~8 minutes at DEG C, generate uniform grey zinc phosphating film.
Comparative example 1
Contrast phosphating solution I composition be：Main salt, nitric acid, phosphoric acid, zinc dihydrogen phosphate, tartaric acid and EDTA, adjust each composition
Proportioning, phosphating solution is made according to the conventional method of this area, the metal after degreasing, washing, derusting, table mediate reason is put into
In phosphating solution, phosphatization 6~8 minutes at 35~45 DEG C, zinc phosphating film is produced.
Comparative example 2
Contrast phosphating solution II composition be：Main salt, nitric acid, phosphoric acid, zinc dihydrogen phosphate, citric acid and EDTA, adjustment it is each into
Distribution ratio, phosphating solution is made according to the conventional method of this area, the metal after degreasing, washing, derusting, table mediate reason is put into
Into phosphating solution, phosphatization 6~8 minutes at 35~45 DEG C, zinc phosphating film is produced.
The metal parts being dipped in the phosphating solution of embodiment 1~3 and comparative example 1~2 is subjected to performance test respectively, it is anti-corrosion
Property is detected according to GB/T6807-2001 required standard, and adhesive force is measured according to GB1720-79 regulation.
Phosphatization sample is down into room temperature to immerse immediately in 3% sodium-chloride water solution, at 15~25 DEG C, when as defined in holding
Between, take out sample and clean, dry up, whether visual inspection phosphatization surface corrosion occurs.
The embodiment 1-3 of table 1 result
After testing, using the phosphatization best results of the gained phosphating solution of the embodiment of the present invention 1~3, comparative example I, II sediment weight
It is excessive, and there is different degrees of corrosion, had using the part of the Zinc phosphating solution obtained by the additive of the present invention excellent
Elegant coating adhesion, phosphating coat is uniformly fine and closely woven, excellent combination property.
Claims (1)
1. a kind of application method of Zinc phosphating solution additive, it is characterised in that described additive each component is in parts by weight
It is calculated as：
Application method is：First the main salt of phosphating solution is blunged uniformly, nitric acid or phosphoric acid dissolving is added, then sequentially adds suitable
Zinc nitrite, the H of amount2O2、NaClO3It is stirring while adding, tartrate, guanidine nitrate and nitrobenzene-sulfonic acid salt are sequentially added, is treated
The temperature of phosphating solution is down to room temperature, adds EDTA, bay dipropionic acid sodium and zinc dihydrogen phosphate, stirring to being completely dissolved,
It is 2~4 to adjust pH value.
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| CN105951069A (en) * | 2016-06-30 | 2016-09-21 | 无锡伊佩克科技有限公司 | Anti-rust phosphating solution and preparation method thereof |
| CN109280912A (en) * | 2018-10-24 | 2019-01-29 | 江苏理工学院 | A kind of aluminum alloy surface processing phosphating solution and method for bonderizing |
| CN115044895B (en) * | 2022-05-12 | 2023-07-18 | 华南理工大学 | Corrosion-resistant phosphating solution using enalapril maleate and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029386A (en) * | 2007-04-09 | 2007-09-05 | 湖南大学 | Triple cationic phosphorizing fluid containing calcium, zinc and manganese for steel plate and zinc-coated plate treatment |
| CN101189366A (en) * | 2005-05-19 | 2008-05-28 | 凯密特尔有限责任公司 | Method for preparing metallic workpieces for cold forming |
| CN101372741A (en) * | 2008-10-17 | 2009-02-25 | 仪征威业油泵油嘴有限公司 | Surface treating method of injection pump plunger piston |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189366A (en) * | 2005-05-19 | 2008-05-28 | 凯密特尔有限责任公司 | Method for preparing metallic workpieces for cold forming |
| CN101029386A (en) * | 2007-04-09 | 2007-09-05 | 湖南大学 | Triple cationic phosphorizing fluid containing calcium, zinc and manganese for steel plate and zinc-coated plate treatment |
| CN101372741A (en) * | 2008-10-17 | 2009-02-25 | 仪征威业油泵油嘴有限公司 | Surface treating method of injection pump plunger piston |
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