CN102040870A - Surface modification method for metal powder - Google Patents
Surface modification method for metal powder Download PDFInfo
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- CN102040870A CN102040870A CN2011100064599A CN201110006459A CN102040870A CN 102040870 A CN102040870 A CN 102040870A CN 2011100064599 A CN2011100064599 A CN 2011100064599A CN 201110006459 A CN201110006459 A CN 201110006459A CN 102040870 A CN102040870 A CN 102040870A
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Abstract
The invention relates to a surface modification method for metal powder, which belongs to the field of metal anticorrosion. The method comprises the following steps: preparing a metal powder modified solution from phytic acids, zinc oxide, aluminum salt, promoting agent and corrosion inhibitor; reacting the solution with metal powder so as to form a phytate chemical conversion coating on the surface of the metal powder; and separating, dehydrating and drying the obtained phytate chemical conversion coating so as to obtain surface-modified metal powder, wherein the aluminum salt is one of aluminum sulfate, aluminium chloride and aluminium nitrate; the promoting agent is composed of sodium molybdate (15 percent), sodium tungstate (10 percent) and sodium benzoate (75 percent); and the corrosion inhibitor is composed of any three of 8-hydroxyquinoline, benzotriazole, thiocarbamide and propenethiol. Through adding the metal powder (resin content: 10 to 20 percent) into a water-based paint and then evenly stirring the obtained mixture, the compatibility of the metal powder and waterborne resins can be improved by the phytate coating on the surface of the metal powder, thereby improving the dispersity, application performance of the metal powder in the water-based paint and the performances thereof in the process of storage.
Description
Technical field
The invention belongs to the anti-corrosion of metal field, particularly relate to a kind of metal-powder surface modifying method.
Background technology
With respect to solvent based coating, water-borne coatings is widely used in the anticorrosion and woodwork protective treatment of building structure owing to have advantages such as polluting little and easy construction, usually add the antiseptic property that zinc powder, aluminium powder or zinc-aluminium mixed powder improve coating for metal anticorrosion water-soluble coating, because the density of metal-powder is big and water insoluble, be very easy to the sedimentation layering takes place in coating storage and use, how improving the dispersiveness of metal-powder in water-borne coatings is one of difficult problem that improves the metal anticorrosion water-soluble coating property.Application number is the surface modifying method that the Chinese patent of 96193428.X discloses a kind of metal-powder, with nonionic emulsifier to the metal-powder surface modification treatment, be used for the silicoorganic compound water-borne coatings, weak point is to be easy to generate demulsifying phenomenon at other water-borne coatings.Application number be 200910024224.5 Chinese patent to disclose a kind of be the feedstock production rust-stabilising pigment with mica or graphite, phytate, this rust-stabilising pigment can't substitute zinc powder, aluminium powder and zinc-aluminium powder mix antiseptic property.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, and a kind of metal-powder surface modifying method is provided.
A kind of metal-powder surface modifying method, it is characterized in that: prepare the metal-powder modified solution by phytic acid, zinc oxide, aluminium salt, promotor and inhibiter, utilize this solution and metal-powder reaction formation in its surface one deck phytate chemical conversion film, obtain the surface modification of metals powder through separation, dehydration and drying; May further comprise the steps:
1) takes by weighing phytic acid, be diluted to 20～30% (wt) with deionized water;
2) under agitation condition, add needed zinc oxide, add aluminium salt, promotor and inhibiter successively after question response is complete, obtain the metal-powder modified solution after stirring;
3) under agitation condition, be 0.10～0.20mol/L with deionized water dilution metal-powder modified solution to concentration of metal ions, adjust pH to 1.0～5.0 of solution with sodium hydroxide; Slowly add metal-powder, form one deck phytate chemical conversion film on its surface, end by chemical reaction with metal-powder;
4) obtain the surface modification of metals powder through separation, dehydration and drying.
Above-mentioned a kind of metal-powder surface modifying method is characterized in that aluminium salt is any one in Tai-Ace S 150, aluminum chloride and the aluminum nitrate; The composition of promotor (quality): 15% Sodium orthomolybdate, 10% sodium wolframate and 75% Sodium Benzoate, addition are 3～5% of phytic acid quality; Inhibiter is formed by three kinds in oxine, benzotriazole, thiocarbamide, acridine and the propyl group mercaptan.Metal-powder is zinc powder, aluminium powder or zinc-aluminium powder mix in the step 3).
Effect of the present invention is: this metal-powder that adds resin quality 10～20% in water-borne coatings, stir, can improve the consistency of metal-powder and water-base resin by the lip-deep phytate film of metal-powder, thereby improve metal-powder performance in dispersiveness, use properties and the storage process in water-borne coatings.
Embodiment
Provide three most preferred embodiments of the present invention below:
Embodiment 1
A kind of zinc powder surface modifying method: take by weighing the 10.0kg phytic acid, be diluted to 20%, under agitation condition, slowly add 3.0kg zinc oxide, treat to add 0.5kgAlCl successively after the zinc oxide complete reaction with deionized water
36H
2O, 500g promotor, 10g acridine, 20g benzotriazole and 5g thiocarbamide, stirring obtains the zinc powder surface and changes solution; Diluting this solution to metal ion total concn with deionized water is 0.20mol/L, and adjusting pH with sodium hydroxide is 1.0～2.0; 200～300 purpose zinc powders are mixed with this solution, be stirred to the phytate chemical conversion film that forms one deck densification on the zinc powder surface fast; Obtain phytate modified Zn powder through sedimentation, separation, drying.The addition of this modified Zn powder in water-based anticorrosive paint is 18% of resin quality, and stirring gets final product.
Embodiment 2
A kind of aluminium powder form surface modifying method: take by weighing the 10.0kg phytic acid, be diluted to 25%, under agitation condition, slowly add 1.0kg zinc oxide, treat to add 3.5kgAl (NO successively after the zinc oxide complete reaction with deionized water
3)
39H
2O, 400g promotor, 10g acridine, the pure and mild 10g oxine of 10g propylthio, stirring obtains the aluminium powder form surface and changes solution; Diluting this solution to metal ion total concn with deionized water is 0.10mol/L, adjusting pH with sodium hydroxide is 3.0～4.0,200～300 purpose aluminium powder forms are mixed with this solution, be stirred to the phytate chemical conversion film that forms one deck densification on the aluminium powder form surface fast; Obtain phytate modified aluminium powder end through sedimentation, separation, drying.This modified aluminium powder end addition in water-based anticorrosive paint is 10% of a resin quality, and stirring gets final product.
Embodiment 3
A kind of zinc-aluminium mixed powder surface modifying method: take by weighing the 10.0kg phytic acid, be diluted to 30%, under agitation condition, slowly add 2.5kg zinc oxide, treat to add 2.0kg Al successively after the zinc oxide complete reaction with deionized water
2(SO
4)
310H
2O, 300g promotor, 10g acridine, 25g benzotriazole and 5g propyl group mercaptan, stir zinc-aluminium mixed powder surface modification solution; With rare this solution of deionized water to metal ion total concn is 0.15mol/L, adjusting pH with sodium hydroxide is 2.0～3.0,200～300 purpose zinc powders and aluminium powder form are mixed with this solution, be stirred to the phytate chemical conversion film that forms one deck densification on the zinc-aluminium mixed powder surface fast; Obtain phytate modification zinc-aluminium mixed powder through sedimentation, separation, drying.The addition of this modification zinc-aluminium mixed powder in water-based anticorrosive paint be resin quality 15% (wt).
Claims (3)
1. metal-powder surface modifying method, it is characterized in that: prepare the metal-powder modified solution by phytic acid, zinc oxide, aluminium salt, promotor and inhibiter, utilize this solution and metal-powder reaction formation in its surface one deck phytate chemical conversion film, obtain the surface modification of metals powder through separation, dehydration and drying; May further comprise the steps:
1) takes by weighing phytic acid, be diluted to 20～30% (wt) with deionized water;
2) under agitation condition, add needed zinc oxide, add aluminium salt, promotor and inhibiter successively after question response is complete, obtain the metal-powder modified solution after stirring;
3) under agitation condition, be 0.10～0.20mol/L with deionized water dilution metal-powder modified solution to concentration of metal ions, adjust pH to 1.0～5.0 of solution with sodium hydroxide; Slowly add metal-powder, form one deck phytate chemical conversion film on its surface, end by chemical reaction with metal-powder;
4) obtain the surface modification of metals powder through separation, dehydration and drying.
2. a kind of metal-powder surface modifying method according to claim 1 is characterized in that: aluminium salt is any one in Tai-Ace S 150, aluminum chloride and the aluminum nitrate; The composition of promotor (quality): 15% Sodium orthomolybdate, 10% sodium wolframate and 75% Sodium Benzoate, addition are 3～5% of phytic acid quality; Inhibiter is formed by three kinds in oxine, benzotriazole, thiocarbamide, acridine and the propyl group mercaptan.
3. a kind of metal-powder surface modifying method according to claim 1 and 2 is characterized in that: metal-powder is zinc powder, aluminium powder or zinc-aluminium powder mix in the step 3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110006459 CN102040870B (en) | 2011-01-13 | 2011-01-13 | Surface modification method for metal powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110006459 CN102040870B (en) | 2011-01-13 | 2011-01-13 | Surface modification method for metal powder |
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| CN102040870A true CN102040870A (en) | 2011-05-04 |
| CN102040870B CN102040870B (en) | 2013-01-30 |
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| CN 201110006459 Expired - Fee Related CN102040870B (en) | 2011-01-13 | 2011-01-13 | Surface modification method for metal powder |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672158A (en) * | 2012-04-23 | 2012-09-19 | 广西民族大学 | Inorganic substance bonded zinc powder and preparation method thereof |
| CN103319918A (en) * | 2013-06-13 | 2013-09-25 | 南宝树脂（中国）有限公司 | Preparation method of silane coupling agent coated modified inorganic compounds and coating for back of aluminum mirror |
| CN106041417A (en) * | 2016-06-06 | 2016-10-26 | 浙江精龙刀剑有限公司 | Manufacturing method of riffled iron for knives and swords |
| CN108570249A (en) * | 2017-11-03 | 2018-09-25 | 北京化工大学 | A kind of preparation method and aluminium pigment of high gloss based aluminum pigment |
| CN108655380A (en) * | 2018-05-11 | 2018-10-16 | 佛山市高明利钢精密铸造有限公司 | A kind of aluminium alloy cast ingot removing surface method |
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| EP1125988A2 (en) * | 2000-02-17 | 2001-08-22 | Institute of Technology Precision Electrical Discharge Works | A self-sacrifice type metal corrosion inhibitor and a metal corrosion inhibiting method |
| JP2002047433A (en) * | 2000-08-02 | 2002-02-12 | Hoden Seimitsu Kako Kenkyusho Ltd | Method for surface treatment of fine aluminum powder, and phosphate based water-base anticorrosive coating material comprising fine aluminum powder suspension and containing no chromium component |
| CN101292651A (en) * | 2007-04-28 | 2008-10-29 | 上海利康消毒高科技有限公司 | Anti-rust water-based chlorine containing sanitizer and inhibitor |
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2011
- 2011-01-13 CN CN 201110006459 patent/CN102040870B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1125988A2 (en) * | 2000-02-17 | 2001-08-22 | Institute of Technology Precision Electrical Discharge Works | A self-sacrifice type metal corrosion inhibitor and a metal corrosion inhibiting method |
| JP2002047433A (en) * | 2000-08-02 | 2002-02-12 | Hoden Seimitsu Kako Kenkyusho Ltd | Method for surface treatment of fine aluminum powder, and phosphate based water-base anticorrosive coating material comprising fine aluminum powder suspension and containing no chromium component |
| CN101292651A (en) * | 2007-04-28 | 2008-10-29 | 上海利康消毒高科技有限公司 | Anti-rust water-based chlorine containing sanitizer and inhibitor |
Non-Patent Citations (1)
| Title |
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| 刘泓 等: "植酸在金属防腐中的应用研究", 《应用化工》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672158A (en) * | 2012-04-23 | 2012-09-19 | 广西民族大学 | Inorganic substance bonded zinc powder and preparation method thereof |
| CN102672158B (en) * | 2012-04-23 | 2014-07-02 | 广西民族大学 | Inorganic substance bonded zinc powder and preparation method thereof |
| CN103319918A (en) * | 2013-06-13 | 2013-09-25 | 南宝树脂（中国）有限公司 | Preparation method of silane coupling agent coated modified inorganic compounds and coating for back of aluminum mirror |
| CN103319918B (en) * | 2013-06-13 | 2014-07-16 | 南宝树脂（中国）有限公司 | Preparation method of silane coupling agent coated modified inorganic compounds and coating for back of aluminum mirror |
| CN106041417A (en) * | 2016-06-06 | 2016-10-26 | 浙江精龙刀剑有限公司 | Manufacturing method of riffled iron for knives and swords |
| CN106041417B (en) * | 2016-06-06 | 2018-06-29 | 浙江精龙刀剑有限公司 | A kind of production method of daggers and swords riffled iron |
| CN108570249A (en) * | 2017-11-03 | 2018-09-25 | 北京化工大学 | A kind of preparation method and aluminium pigment of high gloss based aluminum pigment |
| CN108655380A (en) * | 2018-05-11 | 2018-10-16 | 佛山市高明利钢精密铸造有限公司 | A kind of aluminium alloy cast ingot removing surface method |
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| Publication number | Publication date |
|---|---|
| CN102040870B (en) | 2013-01-30 |
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