CN106245043A - Aluminum alloy surface treatment agent and preparation method thereof and purposes - Google Patents
Aluminum alloy surface treatment agent and preparation method thereof and purposes Download PDFInfo
- Publication number
- CN106245043A CN106245043A CN201610776678.8A CN201610776678A CN106245043A CN 106245043 A CN106245043 A CN 106245043A CN 201610776678 A CN201610776678 A CN 201610776678A CN 106245043 A CN106245043 A CN 106245043A
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- China
- Prior art keywords
- aluminum alloy
- alloy surface
- treatment agent
- weight portion
- surface treatment
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/12—Light metals
- C23G1/125—Light metals aluminium
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/56—Treatment of aluminium or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The present invention relates to Aluminum alloy surface treatment agent and preparation method thereof and purposes.It has 45～55 weight portion phytic acid, 15～20 parts by weight of lemon acid, 0.5～1 weight portion OPEO, 55～60 weight parts waters；Improve it also have 8～10 weight portion sodium phytates, 5～6 parts sulfuric acid ceriums, 1～1.5 weight portion Ammonium persulfate .s, its economic formula is reasonable, to aluminum alloy surface high treating effect, is safe from harm human body, not pollutes environment；Preparation method is mix and blend method, and the method technique is simple, uses equipment few；Purposes is: using and impregnate the oils and fats of this traditional method removal aluminum alloy surface and expose the oxide-film of self-assembling formation in atmosphere and form one layer of passivating film in aluminum alloy surface, dipping temperature is 25～30 DEG C, dip time 30～60 seconds.Present treatment agent can play more significant castering action for quality and the market competitiveness of Related product.
Description
Technical field
The present invention relates to a kind of Aluminum alloy surface treatment agent, the invention still further relates at a kind of described aluminum alloy surface simultaneously
The preparation method of reason agent and purposes.
Background technology
Before Al alloy parts uses, often over the pre-treatments such as cleaning, passivation, the then corresponding coating of surface spraying.
The techniqueflow that existing aluminum alloy surface processes is: defat → washing → pickling → washing → neutralization → washing → blunt
Change → spray treatment.
Degreasing process generally uses alkaline solution, and pickling generally uses the strong acid such as sulphuric acid, hydrochloric acid.Al alloy parts is in application
Before carry out pre-treatment frequently with chromate chemical deactivation method, but during chromate processes, hexavalent chromium has carcinogenic work to human body
With, deal with improperly environment can be caused serious pollution, therefore chromating technique is restricted greatly, European Union member countries and
China has limited it and has used.Recent domestic has carried out numerous studies to non-chromium inactivating technique, develop cobalt salt, silicate,
The multiple passivating solution system for handling such as molybdic acid, titanate, zirconium, make some progress, but the stability of technique are not enough, and paint film is attached
Put forth effort still there is gap with using chromate chemical passivation.And, existing pretreatment of aluminum alloy operation is complex, need to be through de-
Fat, pickling, passivation and several cleaning steps；And the Cr VI used in the strong acid such as sulphuric acid used by pickling, hydrochloric acid and passivation
Having greater environmental impacts, need to coordinate corresponding sewage disposal device, these all can promote the production cost of Al alloy parts, fall
The market competitiveness of low production.Therefore, market demand a kind of easy and simple to handle, be not related to strong acid and strong base, hexavalent chromium aluminum close
Metal working part surface conditioning agent.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Aluminum alloy surface treatment agent, and its economic formula is reasonable, to aluminum
Alloy surface high treating effect, is safe from harm to human body, not pollutes environment；Additionally provide this aluminum alloy surface a kind of simultaneously
The preparation method of inorganic agent, the method technique is simple, uses equipment few；Give also the use of this Aluminum alloy surface treatment agent simultaneously
On the way.
For solving above-mentioned technical problem, the invention provides Aluminum alloy surface treatment agent, it includes following component:
The preparation method of this Aluminum alloy surface treatment agent is: the OPEO of 0.5～1 weight portion is added 55
～60 weight portion water in dissolve, sequentially add 30～50 weight portion phytic acid, 15～20 parts by weight of lemon acid, 0.5～1 weight
Part OPEO, can be prepared by described Aluminum alloy surface treatment agent after stirring.
The purposes of this Aluminum alloy surface treatment agent is: use the oil impregnating this traditional method removal Al alloy parts surface
Fat and expose self-assembling formation in atmosphere oxide-film and Al alloy parts surface formed one layer of passivating film, dipping temperature is 25
～30 DEG C, dip time 30～60 seconds.
For the sake of simple declaration problem, below Aluminum alloy surface treatment agent of the present invention is referred to as present treatment agent.
Phytic acid is the main component of present treatment agent, plays and cleans and the effect on passivation Al alloy parts surface.Join with phytic acid
The metal detergent of system, good stability, it is possible to reduce the corrosion of metal surface.High affinity due to phytic acid Yu polyvalent cation
Potential energy, therefore phytic acid can alloying element multiple with Al alloy parts surface formed compound react, by Al alloy parts
Surface oils and fats is peeled off, and the thin of Al alloy parts surface self-assembling formation and incomplete oxide-film is removed, thus to aluminium alloy
Surface of the work plays cleaning action.Simultaneously as phytic acid is to cation height affinity potential energy, make again phytic acid and Al alloy parts table
There is complex reaction in face, forms complex, serves the effect on passivation Al alloy parts surface.
Citric acid is the another main component of present treatment agent, plays enhancing and cleans and passivation aluminum surface action.Citric acid is
A kind of stronger organic acid, uses citric acid to make builder, can improve the performance of cleaning, prevent pollutant from again adhering to.Meanwhile,
Citric acid can precipitate metal ion rapidly, form passivating film on Al alloy parts surface, enhance inorganic agent to aluminium alloy work
The passivation on part surface.
OPEO is the wetting agent in present treatment agent, the penetrating power of enhancement process agent.
According to the purposes of described present treatment agent, use present treatment agent to use and impregnate this traditional method to Al alloy parts
After being carried out Passivation Treatment, one layer of passivating film can be formed on Al alloy parts surface, enable aluminum alloy to workpiece and have good resistance to
Corrosivity.It simplifies the processing step of conventional aluminum alloys workpiece pre-treatment, and without Cr VI, and cleaning and passivation effect are better than
Traditional handicraft, greatly reduces the production cost of Al alloy parts pre-treatment, improves quality and the market competitiveness of Related product.
Therefore, present treatment agent economic formula, practical, Cleaning and Passivation is effective, is safe from harm human body, not pollutes environment.
As the improvement of the present invention, the component of present treatment agent also includes:
Sodium phytate 8～10 weight portion
Cerous sulfate 5～6 weight portion
Ammonium persulfate. 1～1.5 weight portion
The preparation method of present treatment agent is: be additionally included in prepared described Aluminum alloy surface treatment agent be sequentially added into 8～
10 weight portion sodium phytates, 5～6 parts sulfuric acid ceriums, 1～1.5 weight portion Ammonium persulfate .s, and stir.
Sodium phytate is the functional additive of present treatment agent, acts primarily as regulation inorganic agent pH value and the effect of complexing power.
Cerous sulfate is the functional additive of present treatment agent, can promote that aluminum alloy surface forms rare-earth oxidation film after interpolation,
Improve the decay resistance of oxide-film.
Ammonium persulfate. is the functional additive of present treatment agent, and Ammonium persulfate. has oxidisability, plays rush in present treatment agent
Enter Al alloy parts surface and form the effect of oxide-film.
According to the purposes of described present treatment agent, use present treatment agent to use and impregnate this traditional method to Al alloy parts
After being carried out Passivation Treatment, passivating film can be formed on Al alloy parts surface, add this place based on above-mentioned functions additive
In reason agent so that the Cleaning and Passivation effect of present treatment agent improves further.
In sum, its economic formula of present treatment agent, rationally, without hexavalent chromium, Cleaning and Passivation is effective, to human body
It is safe from harm, environment is not polluted；The preparation method of present treatment agent, its technique is simple, uses equipment few；The use of present treatment agent
Way is extensive, and strong adaptability is useful industrially simple and easy to do, does not has obstacle, it is simple to promote and implement.Start at home and aluminum has been closed
The gold two-in-one process of Cleaning and Passivation and the beginning of chromium-free deactivation, quality and the market competitiveness for Related product can play more aobvious
The castering action write.
Empirical tests, present treatment agent is prone to storage, only need to be saved in ventilation cool place be dried place, more than 5 DEG C, avoid daylight directly to shine
?.
The part physical chemical property of this inorganic agent is:
Outward appearance: clear homogeneous is slightly in faint yellow
Viscosity: (25 DEG C) 300～500mPa s
PH value: 2.5～3.0
Phytic acid in present treatment agent, citric acid, OPEO, sodium phytate, cerous sulfate, Ammonium persulfate. are city
Sell product.
Specifying information is as follows:
Detailed description of the invention
The present invention can be well understood to further below by way of example given below.But they are not to the present invention
Restriction.
Embodiment one:
The OPEO of 0.5 weight portion is added in the water of 55 weight portions and dissolve, sequentially add 30 weight
Part phytic acid, 15 parts by weight of lemon acid, 0.5 weight portion OPEO, can be prepared by described after stirring
Aluminum alloy surface treatment agent, is then sequentially added into the sodium phytate of 8 weight portions in prepared described Aluminum alloy surface treatment agent, and 5
The cerous sulfate of weight portion, the Ammonium persulfate. of 1 weight portion, and stir.
Use the oils and fats impregnating this traditional method removal aluminum alloy surface and the oxidation exposing self-assembling formation in atmosphere
Film also forms one layer of passivating film in aluminum alloy surface, and dipping temperature is 25 DEG C, dip time 30 seconds.
After aluminium sheet Cleaning and Passivation being processed with present treatment agent, carry out fluorocarbon-sprayed, appoint and take five conduct experiment examinations therein
Sample, and numbered 1 No. 5 respectively.The salt spray test chamber that in employing, frequency experimental facilities company limited in Hailin produces, and according to GB/
T10125 1997 " artificial atmosphere corrosion testing salt spray test " national standard, carries out salt mist experiment to described aluminium sheet.Salt fog is rotten
Corrosion test the results are shown in Table 1, the time in table 1 be described aluminum occur corrosion time.
Table 1
| Experiment aluminium sheet numbering | 1 | 2 | 3 | 4 | 5 |
| The time (hour) of corrosion occurs | 4100 | 4130 | 4093 | 4103 | 4129 |
From table 1 it follows that salt spray test result is all higher than 4000 hours, fully meets GB/T23443-2009 and " build
Build decoration aluminum veneer " accelerate the requirement of 4000 hours in weather resistance.
Embodiment two:
The OPEO of 0.75 weight portion is added in the water of 57.5 weight portions and dissolve, sequentially add 40 weights
Amount part phytic acid, 17.5 parts by weight of lemon acid, 0.75 weight portion OPEO, can be prepared by institute after stirring
The Aluminum alloy surface treatment agent stated, is then sequentially added into the phytic acid of 9 weight portions in prepared described Aluminum alloy surface treatment agent
Sodium, the cerous sulfate of 5.5 weight portions, the Ammonium persulfate. of 1.25 weight portions, and stir.
Use the oils and fats impregnating this traditional method removal aluminum alloy surface and the oxidation exposing self-assembling formation in atmosphere
Film also forms one layer of passivating film in aluminum alloy surface, and dipping temperature is 27.5 DEG C, dip time 45 seconds.
After present treatment agent is carried out Passivation Treatment to aluminium sheet, after carrying out hydroxyl alkyd resins paint spraying, aluminium sheet is adopted
Boil 8 hours with 60 DEG C of hot water, after drying, carry out adhesive force test, appoint take therein five as experimental sample, and number respectively
It it is 6 No. 10.Use the QFZ Coating adhesion test instrument that Tianjin Material Testing Machine factory produces, and according to GB/T9286-1998
" cross cut test of paint and varnish paint film ", investigates adhesive force, draws compartment away from for 2mm, the results are shown in Table 2.
Table 2
| Experimental sample is numbered | 6 | 7 | 8 | 9 | 10 |
| Adhesive force grade | 0 | 0 | 0 | 0 | 0 |
Usually, the result of cross cut test is divided into 0～5 grade, and 0 grade is excellent, and for general service, 1～3 grade is also
Satisfactorily.From Table 2, it can be seen that adhesive force grade is 0 grade, paint film adhesion fully meets requirement.
Embodiment three:
The OPEO of 1 weight portion is added in the water of 60 weight portions and dissolve, sequentially add 50 weight portions
Phytic acid, 20 parts by weight of lemon acid, 1 weight portion OPEO, can be prepared by described aluminum after stirring and close
Gold surface inorganic agent, is then sequentially added into the sodium phytate of 10 weight portions, 6 weight in prepared described Aluminum alloy surface treatment agent
The cerous sulfate of part, the Ammonium persulfate. of 1.5 weight portions, and stir.
Use the oils and fats impregnating this traditional method removal aluminum alloy surface and the oxidation exposing self-assembling formation in atmosphere
Film also forms one layer of passivating film in aluminum alloy surface, and dipping temperature is 30 DEG C, dip time 60 seconds.
Claims (5)
1. Aluminum alloy surface treatment agent, it is characterised in that: it includes following components:
Aluminum alloy surface treatment agent the most according to claim 1, it is characterised in that: its component also includes:
Sodium phytate 8～10 weight portion
Cerous sulfate 5～6 weight portion
Ammonium persulfate. 1～1.5 weight portion.
The preparation method of Aluminum alloy surface treatment agent the most according to claim 1, it is characterised in that: comprise the following steps:
The OPEO of 0.5～1 weight portion is added in the water of 55～60 weight portions and dissolve, sequentially add 30～50 weights
Amount part phytic acid, 15～20 parts by weight of lemon acid, 0.5～1 weight portion OPEO, can make after stirring
Aluminum alloy surface treatment agent described in.
The preparation method of Aluminum alloy surface treatment agent the most according to claim 3, it is characterised in that: step also includes:
The described Aluminum alloy surface treatment agent prepared is sequentially added into the sodium phytate of 8～10 weight portions, the cerous sulfate of 5～6 weight portions, 1
～1.5 Ammonium persulfate .s of weight portion, and stir.
The purposes of Aluminum alloy surface treatment agent the most according to claim 1 and 2, it is characterised in that: use and impregnate this biography
System method is removed the oils and fats of aluminum alloy surface and exposes the oxide-film of self-assembling formation in atmosphere and form one in aluminum alloy surface
Layer passivating film, dipping temperature is 25～30 DEG C, dip time 30～60 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776678.8A CN106245043A (en) | 2016-08-30 | 2016-08-30 | Aluminum alloy surface treatment agent and preparation method thereof and purposes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776678.8A CN106245043A (en) | 2016-08-30 | 2016-08-30 | Aluminum alloy surface treatment agent and preparation method thereof and purposes |
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| CN106245043A true CN106245043A (en) | 2016-12-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829081A (en) * | 2017-11-07 | 2018-03-23 | 北京安邦之星科技有限公司 | A kind of special passivation film agent of aluminum products and preparation method thereof |
| CN109385638A (en) * | 2018-12-29 | 2019-02-26 | 天津市顺超有限公司 | A kind of alulotion and its preparation and application |
| CN109868465A (en) * | 2019-01-28 | 2019-06-11 | 安徽唯楚新材料有限公司 | A kind of aluminium sheet passivating solution and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006134117A1 (en) * | 2005-06-14 | 2006-12-21 | Basf Aktiengesellschaft | Method for the passivation of metal surfaces with compositions comprising polymers with acid groups and waxes |
| CN104911615A (en) * | 2015-07-01 | 2015-09-16 | 吴骏 | Zinc-plated plate oxidation spot removing washing agent as well as preparation method and application thereof |
-
2016
- 2016-08-30 CN CN201610776678.8A patent/CN106245043A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006134117A1 (en) * | 2005-06-14 | 2006-12-21 | Basf Aktiengesellschaft | Method for the passivation of metal surfaces with compositions comprising polymers with acid groups and waxes |
| CN104911615A (en) * | 2015-07-01 | 2015-09-16 | 吴骏 | Zinc-plated plate oxidation spot removing washing agent as well as preparation method and application thereof |
Non-Patent Citations (1)
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| 《化工百科全书》编辑委员会: "《化工百科全书 第12卷》", 30 November 1996, 化学工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829081A (en) * | 2017-11-07 | 2018-03-23 | 北京安邦之星科技有限公司 | A kind of special passivation film agent of aluminum products and preparation method thereof |
| CN109385638A (en) * | 2018-12-29 | 2019-02-26 | 天津市顺超有限公司 | A kind of alulotion and its preparation and application |
| CN109868465A (en) * | 2019-01-28 | 2019-06-11 | 安徽唯楚新材料有限公司 | A kind of aluminium sheet passivating solution and preparation method thereof |
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Application publication date: 20161221 |