CN104878376A - Aluminum alloy low chromium passivation solution and preparation method of passivation solution - Google Patents
Aluminum alloy low chromium passivation solution and preparation method of passivation solution Download PDFInfo
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- CN104878376A CN104878376A CN201510356869.4A CN201510356869A CN104878376A CN 104878376 A CN104878376 A CN 104878376A CN 201510356869 A CN201510356869 A CN 201510356869A CN 104878376 A CN104878376 A CN 104878376A
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Abstract
The invention relates to an aluminum alloy low chromium passivation solution. The aluminum alloy low chromium passivation solution is prepared by, by weight, the following components of 12-18 parts of vanadate, 12-20 parts of polytetrafluoroethylene, 12-20 parts of titanium sulfate, 1-5 parts of aluminum oxide, 2-6 parts of zinc carbonate, 3-10 parts of potassium hydroxide, 5-8 parts of waterborne macromolecule emulsion, 0.1-0.5 part of stabilizer and 35-40 parts of deionized water. A passive film formed by the aluminum alloy low chromium passivation solution has the high stability and corrosion resisting property and the certain antioxygenic property, and can effectively prevent aluminum alloy materials from being corroded by the outside and effectively prolong the service life of the aluminum alloy materials; the aluminum alloy low chromium passivation solution is a good passivation solution which can replace a chromate passivation solution.
Description
Technical field
The invention belongs to field of metal surface treatment technology, particularly the preparation method of a kind of aluminium alloy low chromium passivating liquid and this passivating solution.
Background technology
Passivating solution is a kind of metallic surface that can make is the solution of passive state, and be generally used for the plating posttreatment of zinc-plated, cadmium plating and other coating, object forms the condition of surface that can stop metal normal reaction at coating surface, improve its corrosion stability, and it is attractive in appearance to increase product.It is little that aluminium alloy has proportion, the advantages such as the physical and chemical performance that good heat conduction and electroconductibility, reflective be strong, be easy to machine-shaping and excellence, and it is cheap, being widely used in the parts such as aerospace, communications and transportation, light industry building materials, is most widely used in light alloy, that consumption is maximum alloys.Then aluminium alloy moist, like containing environment such as industrial gasses, fuel gas, salinity and dust air the destruction that the forms such as spot corrosion, crevice corrosion, stress corrosion and corrosion fatigue very easily occur when using, affect it and continue to use.Therefore, aluminum alloy surface process expands its range of application and one of effective way extending its work-ing life.
Chromating process can significantly improve the anti-corrosion capability of aluminum alloy surface, and the passive film simultaneously generated has good sticking power to coating, and with low cost, therefore once widely uses in multiple field.Then, chromic salt is extremely malicious, causes serious injury to environment and the healthy of people.Therefore, the use of chromic acid is subject to strict restriction, researches and develops the development trend that passivating solution that is nontoxic or low toxicity is passivating solution field with alternative complex acid salt passivation technology.
Summary of the invention
The technical problem that the present invention solves: for above-mentioned deficiency, overcome the defect of prior art, the object of this invention is to provide a kind of aluminium alloy low chromium passivating liquid and preparation method thereof.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of aluminium alloy low chromium passivating liquid, is prepared from by each component of following mass fraction: vanadate 12-18 part, tetrafluoroethylene 12-20 part, titanium sulfate normal salt 12-20 part, aluminium sesquioxide 1-5 part, zinc carbonate 2-6 part, potassium hydroxide 3-10 part, aqueous high molecular emulsion 5-8 part, stablizer 0.1-0.5 part, Sodium chromate 2-10 part and deionized water 35-40 part.
As further innovation of the present invention, described vanadate is vanadic acid root.
As further innovation of the present invention, described aqueous high molecular emulsion is elastic polyurethane resin or acrylic resin.
As further innovation of the present invention, described stablizer is Magnesium Stearate or stearic acid file or methanesulfonic tin or potassium stearate.
A preparation method for aluminium alloy low chromium passivating liquid, preparation process is as follows:
(1) vanadate, tetrafluoroethylene, zinc carbonate, Sodium chromate and potassium hydroxide are joined in deionized water, heating in water bath, temperature 35-65 DEG C,
Continuous stirring, obtains mixing solutions after mixing;
(2) in mixing solutions, add titanium sulfate normal salt and aluminium sesquioxide, limit edged stirs;
(3) under above-mentioned mixed solution is placed in room temperature, add aqueous high molecular emulsion and stablizer, mix, namely prepare aluminium alloy low chromium passivating liquid.
The invention has the beneficial effects as follows:
The passive film that aluminium alloy low chromium passivating liquid provided by the invention is formed; there is high stability and corrosion resisting property; and there is certain antioxidant property; can available protecting aluminum alloy materials; avoid being subject to extraneous corrosion; effectively extending its work-ing life, is a kind of excellent passivation liquid that can replace chromating liquid.
Embodiment
Embodiment 1
A preparation method for aluminium alloy low chromium passivating liquid, preparation process is as follows:
(1) 16 parts of vanadate, 18 parts of tetrafluoroethylene, 4 parts of zinc carbonates, 3 parts of Sodium chromates and 3 parts of potassium hydroxide are joined in 35 parts of deionized waters, heating in water bath, temperature 35 DEG C,
Continuous stirring, obtains mixing solutions after mixing;
(2) in mixing solutions, add 8 parts of titanium sulfate normal salt and 4 parts of aluminium sesquioxides, limit edged stirs;
(3) under above-mentioned mixed solution is placed in room temperature, add aqueous high molecular emulsion and methanesulfonic tin, mix, namely prepare aluminium alloy low chromium passivating liquid.
Embodiment 2
A preparation method for aluminium alloy low chromium passivating liquid, preparation process is as follows:
(1) 17 parts of vanadate, 15 parts of tetrafluoroethylene, 6 parts of zinc carbonates and 4 parts of potassium hydroxide are joined in 38 parts of deionized waters, heating in water bath, temperature 65 DEG C,
Continuous stirring, obtains mixing solutions after mixing;
(2) in mixing solutions, add 15 parts of titanium sulfate normal salt and 4 parts of aluminium sesquioxides, limit edged stirs;
(3) under above-mentioned mixed solution is placed in room temperature, add aqueous high molecular emulsion and methanesulfonic tin, mix, namely prepare aluminium alloy low chromium passivating liquid.
Embodiment 2
A preparation method for aluminium alloy low chromium passivating liquid, preparation process is as follows:
(1) 16 parts of vanadate, 14 parts of tetrafluoroethylene, 5 parts of zinc carbonates and 8 parts of potassium hydroxide are joined in 38 parts of deionized waters, heating in water bath, temperature 65 DEG C,
Continuous stirring, obtains mixing solutions after mixing;
(2) in mixing solutions, add 15 parts of titanium sulfate normal salt and 4 parts of aluminium sesquioxides, limit edged stirs;
(3) under above-mentioned mixed solution is placed in room temperature, add aqueous high molecular emulsion and methanesulfonic tin, mix, namely prepare aluminium alloy low chromium passivating liquid.
Embodiment 3
A preparation method for aluminium alloy low chromium passivating liquid, preparation process is as follows:
(1) 15 parts of vanadate, 13 parts of tetrafluoroethylene, 4 parts of zinc carbonates and 3 parts of potassium hydroxide are joined in 38 parts of deionized waters, heating in water bath, temperature 55 DEG C,
Continuous stirring, obtains mixing solutions after mixing;
(2) in mixing solutions, add 13 parts of titanium sulfate normal salt and 3 parts of aluminium sesquioxides, limit edged stirs;
(3) under above-mentioned mixed solution is placed in room temperature, add aqueous high molecular emulsion and methanesulfonic tin, mix, namely prepare aluminium alloy low chromium passivating liquid.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to right.
Claims (5)
1. an aluminium alloy low chromium passivating liquid, it is characterized in that, be prepared from by each component of following mass fraction: vanadate 12-18 part, tetrafluoroethylene 12-20 part, titanium sulfate normal salt 12-20 part, aluminium sesquioxide 1-5 part, zinc carbonate 2-6 part, potassium hydroxide 3-10 part, aqueous high molecular emulsion 5-8 part, stablizer 0.1-0.5 part, Sodium chromate 2-10 part and deionized water 35-40 part.
2. according to the aluminium alloy low chromium passivating liquid described in claim 1, it is characterized in that: described vanadate is vanadic acid root.
3. according to the aluminium alloy low chromium passivating liquid described in claim 1, it is characterized in that: described aqueous high molecular emulsion is elastic polyurethane resin or acrylic resin.
4. according to the aluminium alloy low chromium passivating liquid described in claim 1, it is characterized in that: described stablizer is methanesulfonic tin.
5., according to a preparation method for the aluminium alloy low chromium passivating liquid described in claim 1, it is characterized in that, preparation process is as follows:
(1) vanadate, tetrafluoroethylene, zinc carbonate, Sodium chromate and potassium hydroxide are joined in deionized water, heating in water bath, temperature 35-65 DEG C, obtain mixing solutions by ultrasonic stirring;
(2) in mixing solutions, add titanium sulfate normal salt and aluminium sesquioxide, limit edged stirs;
(3) under above-mentioned mixed solution is placed in room temperature, add aqueous high molecular emulsion and stablizer, mix, namely prepare aluminium alloy low chromium passivating liquid.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113088663A (en) * | 2021-04-02 | 2021-07-09 | 南通四合不锈钢制品有限公司 | Machining method of steel cutter |
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| CN104328412A (en) * | 2013-07-22 | 2015-02-04 | 无锡永发电镀有限公司 | Preparation method for aluminium-alloy surface golden-yellow passive film processing solution |
| CN104372323A (en) * | 2014-11-13 | 2015-02-25 | 无锡伊佩克科技有限公司 | Aluminum alloy chromium-free water-based passivator and preparation method thereof |
| CN104451643A (en) * | 2014-11-14 | 2015-03-25 | 无锡伊佩克科技有限公司 | Aluminum alloy chromium-free passivation solution and preparation method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101021006A (en) * | 2007-03-15 | 2007-08-22 | 西安建筑科技大学 | Normal temperature fast filming fluid for aluminium alloy surface and its usage |
| CN103132067A (en) * | 2013-02-17 | 2013-06-05 | 武汉风帆电镀技术股份有限公司 | Pre-treating agent for surfaces of aluminum profile and aluminum alloy profile |
| CN104328412A (en) * | 2013-07-22 | 2015-02-04 | 无锡永发电镀有限公司 | Preparation method for aluminium-alloy surface golden-yellow passive film processing solution |
| CN104372323A (en) * | 2014-11-13 | 2015-02-25 | 无锡伊佩克科技有限公司 | Aluminum alloy chromium-free water-based passivator and preparation method thereof |
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| CN113088663A (en) * | 2021-04-02 | 2021-07-09 | 南通四合不锈钢制品有限公司 | Machining method of steel cutter |
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Application publication date: 20150902 |