CN104962893A - Environmental phosphating solution - Google Patents
Environmental phosphating solution Download PDFInfo
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- CN104962893A CN104962893A CN201510387182.7A CN201510387182A CN104962893A CN 104962893 A CN104962893 A CN 104962893A CN 201510387182 A CN201510387182 A CN 201510387182A CN 104962893 A CN104962893 A CN 104962893A
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Abstract
The invention provides an environmental phosphating solution, which belongs to the field of industrial phosphating solutions. The phosphating solution comprises Zn<2+>, Mn<2+>, Ca<2+>, nitrate, phosphate, edetic acid, citric acid, tartaric acid, phytic acid, polyhydroxy carboxylic acid compound, aluminium polychlorid and polyacrylamide. The phosphating solution prepared by adopting a method provided by the invention has the advantages of good stability, simplicity in technical operation, low difficulty of control technology, high film forming speed, uniformity and fineness of films, good corrosion resistance, wide application range, low cost and convenience in use and is favorable for industrial production, and the adhesive force of metal components and coatings is increased.
Description
Technical field
The invention belongs to industrial Phosphating Solution field, be specifically related to a kind of environment-friendly phosphating solution.
Background technology
Phosphatization refers to that metal parts, in phosphate solution, chemical reaction, electrochemical reaction etc. occurs, and forms the process of the phosphatize phosphate coat of one deck indissoluble in metallic surface.Phosphatize phosphate coat can significantly improve the sticking power of coating, solidity to corrosion and barrier propterty as the bottom of coating or metal surface protection layer, is widely used in the industries such as automobile, household electrical appliances, machinery, military project.
The ubiquitous problem of current domestic phosphorization technology is: phosphatization temperature is high, Phosphating Solution work-ing life is short, washing difficulty is large and cause the problems such as water pollution, not only brings burden to environmental improvement but also consumes the resources such as a large amount of water, phosphoric acid salt.Therefore the developing direction of phosphorization technology, mainly improve quality and reduce pollution, energy-conservation, asepsis environment-protecting, clean phosphating further, Phosphating Solution should have save material and the energy, function is reasonable, product is in use and be not detrimental to health after use and destroy the feature of ecotope.
Summary of the invention
For overcoming the deficiencies in the prior art, the object of the present invention is to provide the environment-friendly phosphating solution that a kind of good stability, film forming speed are fast, the advantages such as solidity to corrosion is strong, energy-conserving and environment-protective that it has.
In order to achieve the above object, the invention provides following technical scheme: a kind of environment-friendly phosphating solution, each component of described Phosphating Solution and content are:
Wherein, described nitrate is more than one in zinc nitrate, manganous nitrate or nitrocalcite;
Described phosphoric acid salt is more than one in zinc phosphate, primary zinc phosphate, manganous phosphate, phosphate dihydrogen manganese, calcium phosphate or monocalcium phosphate.
Further, each component of described Phosphating Solution and content are:
Wherein, described nitrate is more than one in zinc nitrate, manganous nitrate or nitrocalcite;
Described phosphoric acid salt is more than one in primary zinc phosphate, phosphate dihydrogen manganese or monocalcium phosphate.
Further, described multi-hydroxy carboxy acid's compound consist of HEDP 20 ~ 25wt%, polyacrylic acid 2 ~ 5wt%, surplus is water.
Further, described multi-hydroxy carboxy acid's compound consist of HEDP 22wt%, polyacrylic acid 4wt%, water 74wt%.
The making method of Phosphating Solution of the present invention is: first water is added to 40% of Phosphating Slot volume, phosphoric acid, nitric acid, ethylenediamine tetraacetic acid (EDTA), citric acid, tartrate and phytinic acid are added successively, and stir, add appropriate nitrate and phosphoric acid salt again, residue reagent is added again after stirring and dissolving, finally add water and be settled to the volume of regulation, stir, can use after adjustment acidity.
Phosphoric acid of the present invention promotes membrane-forming agent, and its addition directly affects the quality of phosphorization film quality, and consumption is too high, and the free acidity in Phosphating Solution increases, and the easy yellowing of phosphatize phosphate coat, consumption is too low, and Phosphating Solution has sediment to produce.Its effect of the ethylenediamine tetraacetic acid (EDTA) added is dispersed substance, contributes to the homogeneity of phosphatize phosphate coat.Phytinic acid and tartrate are common forms inner complex with metal ion, can make phosphatize phosphate coat formation rock steady structure, play good corrosion inhibition, avoid the oxidized destruction of phosphatize phosphate coat under Determining Micro Acid existence.Multi-hydroxy carboxy acid's compound in Phosphating Solution component is that 20 ~ 25%HEDP and 2 ~ 5% polyacrylic acid carry out composite by mass percent, this compound can change the proterties of dirt in water, make dirt not easily in metallic surface growth, adhesion, make dirty sample easily suspend in aqueous phase and flow away with water, reach significant scale inhibition effect.Polyacrylamide and polymerize aluminum chloride add as auxiliary agent, good throwing out can be played, the Main Function of polyacrylamide flocculation agent is cohesion, and the Main Function of polyacrylamide polymeric flocculant is flocculation, mixture has good synergy, greatly can improve flocculating effect.
Compared with prior art, Phosphating Solution good stability prepared by the inventive method, technological operation is simple, control techniques difficulty is little, film forming speed is fast, even film layer is fine and smooth, there is good solidity to corrosion, strengthen the sticking power of each metal parts and coating, and the applied range model of this Phosphating Solution, cost is low, easy to use, be conducive to suitability for industrialized production.
Embodiment
Below by embodiment, content of the present invention is described in detail.
Embodiment 1
The volume of Phosphating Solution as required, calculate the amount of each component, in 1000L Phosphating Solution, first water is added to 40% of Phosphating Slot volume, be the phosphoric acid 6.1kg of 85% by mass concentration, mass concentration is the nitric acid 8kg of 75%, ethylenediamine tetraacetic acid (EDTA) 0.7kg, citric acid 1.1kg, tartrate 0.8kg and phytinic acid 0.75kg adds successively, and stir, add primary zinc phosphate 20.3kg again, phosphate dihydrogen manganese 10.6kg, monocalcium phosphate 8.8kg, zinc nitrate 7kg, polymerize aluminum chloride 0.1kg is added successively again after stirring and dissolving, polyacrylamide 0.5kg and multi-hydroxy carboxy acid's compound 4kg, multi-hydroxy carboxy acid's compound consist of HEDP 20wt%, polyacrylic acid 4wt%, water 76wt%, finally add water and be settled to the volume of regulation, stir, adjustment Phosphating Solution pH scope is 3.5 ~ 5.5.
Embodiment 2
The volume of Phosphating Solution as required, calculate the amount of each component, in 1000L Phosphating Solution, first water is added to 40% of Phosphating Slot volume, be the nitric acid 15kg of 75% by mass concentration, mass concentration is the phosphatase 11 7kg of 85%, ethylenediamine tetraacetic acid (EDTA) 1.2kg, citric acid 3.6kg, tartrate 3.0kg and phytinic acid 1.0kg adds successively, and stir, add nitrocalcite 4.72kg again, manganous nitrate 5.12kg, primary zinc phosphate 7.5kg, zinc phosphate 17kg, phosphate dihydrogen manganese 3.96kg and calcium phosphate 0.51kg, polymerize aluminum chloride 0.1kg is added successively again after stirring and dissolving, polyacrylamide 0.5kg and multi-hydroxy carboxy acid's compound 4kg, multi-hydroxy carboxy acid's compound consist of HEDP 22wt%, polyacrylic acid 4wt%, water 74wt%, finally add water and be settled to the volume of regulation, stir, adjustment Phosphating Solution pH scope is 3.5 ~ 5.5.
Embodiment 3
The volume of Phosphating Solution as required, calculate the amount of each component, in 1000L Phosphating Solution, first water is added to 40% of Phosphating Slot volume, be the nitric acid 7kg of 75% by mass concentration, mass concentration is the phosphoric acid 7kg of 85%, ethylenediamine tetraacetic acid (EDTA) 1.0kg, citric acid 0.6kg, tartrate 2.5kg and phytinic acid 0.5kg adds successively, and stir, add zinc nitrate 30kg again, monocalcium phosphate 20.5kg, primary zinc phosphate 6.8kg and phosphate dihydrogen manganese 20.25kg, polymerize aluminum chloride 0.2kg is added successively again after stirring and dissolving, polyacrylamide 1.0kg and multi-hydroxy carboxy acid's compound 5kg, multi-hydroxy carboxy acid's compound consist of HEDP 25wt%, polyacrylic acid 4wt%, water 73wt%, finally add water and be settled to the volume of regulation, stir, adjustment Phosphating Solution pH scope is 3.5 ~ 5.5.
Embodiment 4
The volume of Phosphating Solution as required, calculate the amount of each component, in 1000L Phosphating Solution, first water is added to 40% of Phosphating Slot volume, be the nitric acid 10kg of 75% by mass concentration, mass concentration is the phosphoric acid 6kg of 85%, ethylenediamine tetraacetic acid (EDTA) 1.1kg, citric acid 2.5kg, tartrate 0.6kg and phytinic acid 0.8kg adds successively, and stir, add zinc nitrate 25kg again, monocalcium phosphate 8.8kg, primary zinc phosphate 26.5kg and phosphate dihydrogen manganese 11.25kg, polymerize aluminum chloride 0.2kg is added successively again after stirring and dissolving, polyacrylamide 1.0kg and multi-hydroxy carboxy acid's compound 5kg, multi-hydroxy carboxy acid's compound consist of HEDP 25wt%, polyacrylic acid 4wt%, water 73wt%, finally add water and be settled to the volume of regulation, stir, adjustment Phosphating Solution pH scope is 3.5 ~ 5.5.
Be dipped in by metal parts in embodiment 1 ~ 4 Phosphating Solution, after 10 ~ 15min, take out nature dry, solidity to corrosion detects according to the required standard of GB/T6807-2001, and sticking power measures according to the regulation of GB1720-79.
Phosphatization sample being down to room temperature immerses in 3% sodium chloride aqueous solution immediately, at 15 ~ 25 DEG C, keeps specific time, and take out sample and clean, dry up, whether visual inspection phosphatization surface occurs corrosion
The result of table 1 embodiment 1-4
After testing, adopt the phosphatization best results of the embodiment of the present invention 1,3,4 gained Phosphating Solution, use the part of gained environmentally-friendly phosphating liquid of the present invention to have outstanding coating adhesion, phosphatize phosphate coat is evenly fine and closely woven, excellent combination property.
Claims (4)
1. an environment-friendly phosphating solution, is characterized in that, each component of described Phosphating Solution and content are:
Wherein, described nitrate is more than one in zinc nitrate, manganous nitrate or nitrocalcite;
Described phosphoric acid salt is more than one in zinc phosphate, primary zinc phosphate, manganous phosphate, phosphate dihydrogen manganese, calcium phosphate or monocalcium phosphate.
2. a kind of environment-friendly phosphating solution according to claim 1, is characterized in that, each component of described Phosphating Solution and content are:
Wherein, described nitrate is more than one in zinc nitrate, manganous nitrate or nitrocalcite; Described phosphoric acid salt is more than one in primary zinc phosphate, phosphate dihydrogen manganese or monocalcium phosphate.
3. a kind of environment-friendly phosphating solution according to claim 1, is characterized in that, described multi-hydroxy carboxy acid's compound consist of HEDP 20 ~ 25wt%, polyacrylic acid 2 ~ 5wt%, surplus is water.
4. a kind of environment-friendly phosphating solution according to claim 3, is characterized in that, described multi-hydroxy carboxy acid's compound consist of HEDP 22wt%, polyacrylic acid 4wt%, water 74wt%.
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| CN201510387182.7A CN104962893A (en) | 2015-06-30 | 2015-06-30 | Environmental phosphating solution |
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| CN201510387182.7A CN104962893A (en) | 2015-06-30 | 2015-06-30 | Environmental phosphating solution |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106319531A (en) * | 2016-10-31 | 2017-01-11 | 东兰音乐铜鼓文化传播有限责任公司 | Corrosion preventing method for bronze drum |
| CN106756926A (en) * | 2017-01-23 | 2017-05-31 | 江苏理工学院 | A kind of environment-friendly phosphating solution and its application for steel |
| CN106757279A (en) * | 2016-12-01 | 2017-05-31 | 三达奥克化学股份有限公司 | Steel wire drawing electrolytic phosphating liquid and production method |
| CN107699884A (en) * | 2017-09-27 | 2018-02-16 | 荆门市拓达科技有限公司 | A kind of environment-friendly phosphating solution for being used for aluminium and aluminium alloy and preparation method thereof |
| CN109518176A (en) * | 2018-12-14 | 2019-03-26 | 上海大学 | Alkaline phosphating liquid, preparation method and phosphorization treatment process |
| CN111286728A (en) * | 2020-03-30 | 2020-06-16 | 沈阳理工大学 | Phosphating solution, phosphate coating, preparation method and application thereof |
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| 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 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106319531A (en) * | 2016-10-31 | 2017-01-11 | 东兰音乐铜鼓文化传播有限责任公司 | Corrosion preventing method for bronze drum |
| CN106757279A (en) * | 2016-12-01 | 2017-05-31 | 三达奥克化学股份有限公司 | Steel wire drawing electrolytic phosphating liquid and production method |
| CN106756926A (en) * | 2017-01-23 | 2017-05-31 | 江苏理工学院 | A kind of environment-friendly phosphating solution and its application for steel |
| CN107699884A (en) * | 2017-09-27 | 2018-02-16 | 荆门市拓达科技有限公司 | A kind of environment-friendly phosphating solution for being used for aluminium and aluminium alloy and preparation method thereof |
| CN109518176A (en) * | 2018-12-14 | 2019-03-26 | 上海大学 | Alkaline phosphating liquid, preparation method and phosphorization treatment process |
| CN109518176B (en) * | 2018-12-14 | 2021-09-24 | 上海大学 | Alkaline phosphating solution, preparation method and phosphating process |
| CN111286728A (en) * | 2020-03-30 | 2020-06-16 | 沈阳理工大学 | Phosphating solution, phosphate coating, preparation method and application thereof |
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